ОПТИЧЕСКИЙ МНОГОСЛОЙНЫЙ НОСИТЕЛЬ ИНФОРМАЦИИ

Изобретение относится к оптическим носителям информации. Имеется информационный слой со стандартной плотностью и информационный слой с высокой плотностью. Первый из них размещен на дне подложки толщиной, например, 1,2 мм и считывается через подложку лазерным лучом. Второй слой сформирован из вещества, которое является прозрачным для лазерного излучения с длиной волны стандартных CD-плейеров (λ = 780 нм), но отражается для более короткой длины волны, используемой для дисков с высокой плотностью (λ = 635 нм). Для достижения высокой плотности во втором слое применены меньший шаг дорожки и меньшие выемки. Слой с высокой плотностью расположен рядом со стороной входа лазерного луча в подложку. Изобретение обеспечивает улучшение качества сигнала считывания, поскольку сигнал при считывании стандартного слоя меньше подвергается искажениям. 7 з.п.ф-лы, 3 ил.

Optisches Informationsaufzeichnungsmedium

IMPROVEMENTS RELATING TO OPTICAL DATA STORAGE DISKS

Optical disc and method for fabricating the same

An optical disc includes an annular substrate, a coating layer, a damping layer, and a leveling layer. The annular substrate includes a supporting portion, and a recording portion surrounding the supporting portion, wherein the recording portion has a recording surface located on a first side thereof. For disc clamping and cost saving, the supporting portion is thicker than the recording portion. The coating layer is formed on the recoding surface for recording dada. The damping layer is formed on the coating layer to shorten response time of the optical disc to vibration. The leveling layer is formed on the opposite side of the annular substrate to the recording surface, to level disk deformation caused in fabrication process. A method for fabricating the aforementioned optical disc is also disclosed.

Optical recording member.

An optical recording member (10) has a reflective substrate (14) and a thin dye-in-polymer layer (12) on the substrate, the dye-in-polymer layer (12) being made to be responsive to an optical recording apparatus so that at least the dye portion of that layer will migrate from the areas struck by the optical recording apparatus to expose the reflective substrate. Prior to the recording process, the dye-in-polymer layer (12) forms an anti-reflection layer to cover the reflective substrate (14). An overcoat layer which can be combined into a single support, or a spaced top layer can be provided. ...

OPTICAL RECORDING MEMBER

PROCEDURE FOR THE RECORDING OF INDENTIFIKATIONSINFORMATIONEN, DEVICE FOR IT AND INFORMATION RECORDING MEDIUM

IRREVERSIBLE OPTICAL RECORDING MEDIUM BY TRAINING OF BLISTERS WITH A BY IT PRODUCING GASQUELLE LIMITED HEIGHT

PROCEDURE FOR ITS PRODUCTION OF AN OPTICAL INFORMATION MEDIUM

OPTICAL INFORMATION MEDIUM AND A METHOD OF MANUFACTURING THE MEDIUM

An optical information medium (20) for recording, such as DVR-blue, and a method for manufacturing such a medium (20) is provided. Reading from and recording onto the medium (20) is performed by means of a focused radiation beam (10) having a radiation wavelength & and a numerical aperture NA. Said medium has a substrate (1), and a stack (2) of layers provided thereon. The stack (2) comprises at least a first recording stack (3) and k radiation beam transmissive layers (4, 5). Each transmissive layer (4, 5) has a refractive index ni and an average thickness di ~m and 1 = i = k and k = 2. The thickness dk of layer k (5) is determined by a simple formula which depends on the parameters ni for i & 1...k and di for i = 1...k-1. Such a medium (20) has zero or substantially zero spherical aberration at the focal point, being at the recording layer of the first recording stack (3), of said radiation beam (10).

INFORMATION RECORDING MEDIUM

An information recording medium which includes light-transmitting substrate, a recording layer formed on the substrate, the recording layer having the characteristic of changing an optical characteristic upon heating thereof, together with a protective layer having light-absorbing properties disposed over the recording layer and arranged to absorb light passing through the recording layer upon recording, in combination with a planar layer superimposed on the protective layer and capable of suppressing mechanical deformation of the recording layer.

OPTICAL INFORMATION CARRIER

ОПТИЧЕСКИЙ НОСИТЕЛЬ ИНФОРМАЦИИ И ЕГО ИСПОЛЬЗОВАНИЕ

Предусматривается оптический носитель информации (20) для высокоскоростной многократной записи посредством луча лазерного света (10). Подложка (1) имеет слоистую структуру (2) с первым диэлектрическим слоем (5) и вторым диэлектрическим слоем (7), с записывающим слоем (6), с изменением фазового состояния между первым диэлектрическим слоем (5) и вторым диэлектрическим слоем (7) и с отражающим слоем (3). Записывающий слой (6) содержит соединение Ge и Те, и по меньшей мере первый диэлектрический слой (5) состоит из оксидов Та и Si, нитридов Si и Al или карбидов Si и находится в контакте с записывающим слоем (6). Записывающий слой (6) дополнительно может содержать О или N в количестве до 5 ат.%. Получают диапазон используемых композиций для низких значений ВПС. Таким образом, достигаются высокие скорости обмена данных.

Optical disc

MATERIALS FOR OPTICAL MEDIUM COPY-PROTECTION TRANSIENTLY REACTING TO A READER BEAM

A method and system for providing copy- protected optical medium using transient optical state change security materials capable of changing optical state and software code to detect such change in optical state. © KIPO & WIPO 2007 ...

SETUPAND METHODS FOR STORING DATA IN AND READING OUT DATA FROM A HOLOGRAPHIC STORAGE ARRANGEMENT.

A setup for storing data in and reading out data from a holographic storage medium comprises a light source (12) for emitting light (14) having a wavelength γ, a modulator (16) for modulating the light emitted by the light source, projection means (18) for forming a signal beam (20) from the modulated light and for focusing the signal beam into the holographic storage medium (26) and a light source (12) for emitting a reference beam (22, 32) into the holographic storage medium, the reference beam having a wavelength γ. The setup comprises a grating (28) and a γ/4-layer (30) arranged such that the incident reference beam (22, 32) is diffracted by the grating, upon which the diffracted beam (34) again travels through the γ/4-layer. © KIPO & WIPO 2009 ...

Meio óptico de informação, e, uso do mesmo

Optical recording medium

To provide a product having satisfactory recording characteristics when high linear velocity recording is performed, in a rewritable recording medium having capacity as same as that of a DVD-ROM. A phase transition type optical recording medium wherein information is recorded, reproduced and rewritable by irradiating the material of a recording layer with an optical beam to generate optical change therein is characterized in that at least a first dielectric layer having optical film thickness (nd=refractive index x film thickness) in the range of 80 nm <= nd <= 200 nm, a phase transition recording material layer having the optical film thickness in the range of 20 nm <= nd <= 50 nm in the erased state, a second dielectric layer having the optical film thickness in the range of 10 nm <= nd <= 70 nm and a metal reflection layer are formed in this order on a transparent substrate of polycarbonate or the like having a meandering groove and an another transparent substrate of polycarbonate or ...

Optical recording medium

An optical recording medium is provided, which has reduced degradation in jitter caused by manufacturing variations of a semiconductor laser emitting laser beams or variations in output power of laser beams, and which dissipates heat in the recording layer during recording by laser beams to increase the power margin of the laser beam providing playback jitter values at a certain level or less. An optical recording medium 10 has a support substrate 12 , on which formed are a reflective film 16 , a second dielectric layer 18 , a recording layer 20 , a first dielectric layer 22 , a heat sink layer 24 , and a light-transmitting layer 26 . The heat sink layer 24 is formed of a material having a thermal conductivity within a certain range, e.g., alumina, to dissipate heat through the heat sink layer 24 when the heat is generated by a laser beam incident from the light-transmitting layer 26 , thereby preventing an increase in temperature of the recording layer 20.

Optical information recording medium

A phase-change optical information recording medium in which information can be recorded, reproduced and rewritten and which includes a first transparent substrate having a wobbling guide groove which is spirally formed thereon at a pitch; a first dielectric layer located overlying the first transparent substrate and having an optical thickness of from 80 nm to 200 nm; a phase-change recording layer located overlying the first dielectric layer and having an optical thickness of from 20 to 50 nm when the recording layer is in an erased state; a second dielectric layer located overlying the recording layer and having an optical thickness of from 10 nm to 70 nm; a reflection layer located overlying the second dielectric layer; optionally a third dielectric layer located between the second dielectric layer and the reflection layer; and a second transparent substrate located overlying the reflection layer.

Method of manufacturing optical information recording medium

In an optical information recording medium having at least two information layer, guide grooves for tracking or sample pits or information pits corresponding to information signals are formed on a surface of a first substrate. A first information layer formed by a thin film for reflecting a portion of a light beam made incident on the first substrate and permitting penetration of a portion of the light beam is formed on a surface of the first substrate. Guide grooves for tracking or information pits corresponding to information signals are formed on a surface of a second substrate. A second information layer having a reflectance higher than that of the first information layer is formed on a surface of the second substrate. Between the first information layer and the second information layer, there is formed a transparent separation layer for positioning the first information layer and the second information layer to be spaced a predetermined distance apart from each other.

Information carrier, apparatus, substrate, and system

An information carrier that contains a storage unit, an integrated circuit and a first and a second coupling element. The coupling elements are intermediate in the transfer of data and energy from a base station to the integrated circuit and vice versa. Between the base station and the coupling elements the transfer of data and energy is contactless, and preferably by capacitive coupling. Between at least the first of and preferably both of the coupling elements data and energy are transferred by means of capacitive coupling. The base station is preferably incorporated in an apparatus further containing the reading device of the storage unit. To facilitate the capacitive coupling, the base station contains a first and a second capacitor plate. The information carrier ( 1 ) and the apparatus ( 40 ) with the base station containing the capacitor plates together constitute the system, which is suitable for any protection of the information on the storage unit.

Optical recording medium and recording and reading method of optical recording medium

An optical recording and reading method capable of enhancing the design flexibility of recording layers of an optical recording medium and performing accurate optical recording and reading operations. A basic recording layer is arranged in a position that is in the range of 90 m to 110 m away from a light incident surface of an optical recording medium, and recording layers are arranged in parallel with the basic recording layer. At least the position information of the recording layers is recorded in one of the basic recording layer and the recording layers.

Phase change recording with crystallization improving layer

INFORMATION CARRIER, SYSTEM AND APPARATUS FOR READING SUCH AN INFORMATION CARRIER

Optical information medium

In a video tape recorder (VTR) (2), the capstan (10) draws the tape (6) from which the video signal is reproduced in a forward direction. Following steps are proposed to control the capstan (10): applying a torque to the capstan (10) in a backward direction for a first predetermined period of time ; applying a torque to the capstan (10) in the forward direction for a second predetermined period of time ; nullifying the motor current. This is particularly convenient for slow-motion and still-picture reproduction modes.

INFORMATION RECORDING MEDIUM

PROBLEM TO BE SOLVED: To provide an information recording medium for high-density recording/reproducing, wherein mass productivity is high, and stress is small. SOLUTION: This medium is provided with a first protective layer having a film thickness of ≥2nm to ≤25nm, a recording film, a second protective layer and a reflective layer disposed from a light irradiation side on a substrate, 95 atom% or higher of the material of the first protective layer is set to SiO2-In203-SnO2-ZnS, and a ZnS amount in the first protective layer is set in the range of ≥4 mol% to ≤33 mol%. Thus, the medium having high mass productivity, good recording/reproducing characteristics, and rewriting characteristics. COPYRIGHT: (C)2004,JPO ...

OPTICAL INFORMATION RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To provide an optical information recording medium whose recording layers are not required to show a high degree of accuracy in terms of thickness of their layers and by which an excellent reproduction output can be obtained, and to provide a method of manufacturing the optical information recording medium. SOLUTION: An optical information recording medium 10 includes a plurality of recording layers 14 whose refraction factors change according to radiation of recording light, and intermediate layers 15 disposed between the plurality of recording layers 14. The intermediate layers 15 include a first intermediate layer 15A adjacent to a recording layer 14 on a side opposite to the side where the recording light is made incident, and a second intermediate layer 15B adjacent to the recording layer 14 on the side where the recording light is made incident, the first intermediate layer 15A having a refraction factor different from that of the recording layer 14, and the ...

СПОСОБ ЗАПИСИ ИНФОРМАЦИИ В ЗАПОМИНАЮЩУЮ ЯЧЕЙКУ

Изобретение относится к областям микро- и наноэлектроники, физики поверхности и может быть использовано для получения структур с различной информационной емкостью путем воздействия лазерного излучения. Сущность способа заключается в том, что выбирают твердотельный материал; получают разные рельефы материла путем воздействия на него лазерным излучением разной интенсивности и разной длительности импульсов; получают данные о рельефе поверхности образцов в области, подвергшейся воздействию лазерного излучения; рассчитывают информационную емкость для каждого образца; градуируют полученные данные (величина информационной емкости - тип рельефа поверхности материала); воздействуют лазерным излучением выбранной интенсивности и длительности импульсов в локальную область структуры материала, представляющую собой запоминающую ячейку, для получения заданного рельефа поверхности. Способ позволяет получать различную информационную емкость в одной и той же области материала. 2 ил.

Optisches Informationsaufzeichnungsmedium

Multilevel body e.g. optical data medium, making method, involves forming layer from humidity-absorption plastic, and covering layer directly or indirectly with metal layer for placing bridges into metal layer

The method involves forming a layer from a humidity-absorption plastic, and covering the layer directly or indirectly with a metal layer for placing humidity-permeable diffusion bridges into the metal layer. The metal layer is produced and/or reworked in such a manner that it has a micro perforation section wise. The micro perforation with a mechanical process is placed into the metal layer by laser radiation. The laser radiation is guided by a beam guide device over the metal layer. The laser radiation is guided through screens, so that the screens are formed in the metal layer. Independent claims are also included for the following: (1) a multilevel body comprising a layer formed from humidity-absorption plastic (2) a method for making humidity-permeable diffusion bridges in a metal layer.

Holographisches Speichermaterial

Die vorliegende Erfindung betrifft ein holographisches Speichermaterial (1) wenigstens mit einer Polymerfolie (3) und mit einer metallischen ersten Schicht (4), wobei die erste Schicht (4) auf der Polymerfolie (3) angeordnet ist. Um ein Speichermaterial (1) mit verbesserten optischen Eigenschaften anzugeben, sind eine nichtmetallische zweite Schicht (5) und eine metallische dritte Schicht (6) vorgesehen, wobei die zweite Schicht (5) zwischen der ersten (4) und der dritten Schicht (6) angeordnet ist und wobei die erste, die zweite und die dritte Schicht (4, 5, 6) zusammen eine Gesamtdicke von kleiner als die zum Auslesen verwendete Strahlung aufweisen.

Phasenwechselaufzeichnung mit Schicht zur Verbesserung der Kristallisation

QUADRILAYER OPTICAL DRAW MEDIUM

Leder-Daten-Tonträger, Leder-CD, Leder-DVD, Leder-Blu Ray

Optisches Aufzeichnungsmedium, Herstellungsprozess für dasselbe und optisches Aufzeichnungsverfahren für dasselbe

Optisches Aufzeichnungsmedium mit mehreren Informationsschichten mit verschiedenen Formen

Phasenwechselaufzeichnung mit Schicht zur Verbesserung der Kristallisation

IMPROVEMENTS RELATING TO OPTICAL DATA STORAGE DISKS

Optical disc and method for fabricating the same

INFORMATION RECORDING MEDIA

PROCEDURE, STORAGE MEDIUM, AND SYSTEM

CARRIER FOR REFLECTING HOLOGRAFI DATA MEMORY

OPTICAL SWEEP DEVICE

STORAGE MEDIUM AS WELL AS SYSTEM AND PROCEDURE FOR READING A SUCH STORAGE MEDIUM

RE+RECORDABLE CARRIER OF OPTICAL DATA STORAGE AS WELL AS A PROCEDURE FOR ITS EMPLOYMENT

OPTICAL DATA MEMORY PLATE

OPTICAL RECORDING MEDIUM

OPTICAL INFORMATION MEDIUM AND ITS USE

An optical information medium (20) for high speed erasable recording by means of a laser-light beam (10) is provided. A substrate (1) has a stack (2) of layers with a first dielectric layer (5) and a second dielectric layer (7), a phase-change recording layer (6) between the first dielectric layer (5) and the second dielectric layer (7), and a reflective layer (3).The recording layer (6) has a compound of Ge and Te, and at least the first dielectric layer (5) consists of oxides of Ta and Si, nitrides of Si and Al, or carbides of Si, and is in contact with the recording layer (6). The recording layer (6) additionally may contain O or N in an amount up to 5 at. %. A broad usable composition range for low CET values is obtained. Thus high data rates are achieved.

INFORMATION RECORDING MEDIUM

SUBSTRATE FOR OPTICAL RECORDING MEDIUM AND MAGNETO-OPTICAL RECORDING MEDIUM USING SAME

OPTICAL DATA STORAGE DISC

An optical data storage disc comprising a first component disc (10) formed over one side with a pattern of indentations defining digital data, the indented side of the first component disc being provided with a reflective coating (11), and a second component disc (12) bonded to the indented side of the said component disc. The second component disc carries a surface relief pattern which defines a holographic or other optically variable image.

OPTICAL RECORDING MEDIUM

A phase change optical recording medium which enables optimum direct overwrite even under high speed high density conditions without degrading repetition durability or storage stability of recorded signals. To this end, the phase change optical recording medium has a recording layer formed at least of a phase change material and is recorded and/or reproduced with a laser light beam having a wavelength ranging between 380 nm and 420 nm. A ratio Ac/Aa, where Ac is the absorption rate of said recording layer in a crystalline state and Aa is the absorption rate of said recording layer in an amorphous state, is not less than 0.9, and a crystallization promoting layer promoting the crystallization of the phase change material is contacted with at least one surface of the recording layer. By exploiting the absorption rate control and the crystallization promotion in combination, it is possible to positively compensate the difference between the physical properties of the crystal phase and those ...

Optical recording medium

OPTICAL INFORMATION CARRIER AND ITS FIELD

Optical information medium and optical recording method

Optical data storage medium

The information recording medium and its manufacturing method

SUPPORT Of RECORDING Of INFORMATION

REWRITABLE OPTICAL DATA STORAGE MEDIUM AND USE OF SUCH A MEDIUM

A description is given of a phase-change optical data storage medium (20) having a recording stack (2) with a recording layer (6) and a metal reflective layer (3) comprising at least one transparent layer (4, 8) of the material indium tin oxide (ITO). Use of an ITO layer (4, 8) in the recording stack (2) improves the cooling behavior of the recording layer (6) combined with good optical contrast. Thus, higher possible data rates are achieved. © KIPO & WIPO 2007 ...

Materiais para proteção de cópias de meio óptico, que reagem transientemente a um feixe de leitora

Multilayer optical recording medium and optical recording method

Method of recording information, equipment thereof and information recording medium

RECORDING MEDIUM

Disclosed is a recording medium which is more excellent in storage stability than the conventional recording media. Specifically disclosed is an optical recording medium comprising a reflective layer, a first dielectric layer, a recording layer, a second dielectric layer and a light transmitting layer sequentially in this order on a substrate, wherein recording is performed by decomposing the recording layer by heating. This optical recording medium is characterized by comprising a third dielectric layer between the second dielectric layer and the light transmitting layer.

LASER BEAM POWER MODULATION PATTERN DECISION METHOD, DEVICE FOR RECORDING DATA ONTO OPTICAL RECORDING MEDIUM, AND OPTICAL RECORDING MEDIUM

A laser beam power modulation pattern decision method includes a step of fixing a recording power to a predetermined level, a step of changing the base power level to decide the pulse string patterns, a step of modulating the laser beam intensity according to the pulse string patterns, recording a first test signal onto an optical recording medium, and reproducing it, a step of deciding a base power optimal level according to the amplitude of the reproduced first test signal, a step of further fixing the base power level to an optimal level, a step of changing the recording power level to decide pulse string patterns, a step of modulating the laser beam intensity according to the pulse string patterns, recording a second test signal onto the optical recording medium, and reproducing it, and a step of deciding a recording power optimal level according to the jitter or error rate of the reproduced second test signal.

OPTICAL DISC PROVIDING A VISUAL INDICATION OF ITS STATE OF DEGRADATION

An optical disc comprises indicator means for indicating to a user the state of degradation of the optical disc. For example, the indicator means can be an indicator layer that is configured to change colour when incorporated into an optical disc, thereby providing an indication that the disc is degrading or ageing, and that it is advisable to transfer the data to another storage medium. According to one embodiment, an optical disc 1 , for example a DVD, comprises: a label layer 3; a polycarbonate layer 5; an aluminium/silver layer 7; a dye and data layer 9; an adhesive layer 11; and a second polycarbonate layer 13. In addition, the optical disc 1 comprises indicator means in the form of an indicator layer 15. The indicator layer 15 provides an indication to a user about the state of degradation of the optical disc. The indicator layer 15 is arranged such that at least a portion of the indicator layer 15 coincides with the area in which the data layer 9 is located, and configured such that ...

MATERIALS FOR OPTICAL MEDIUM COPY-PROTECTION TRANSIENTLY REACTING TO A READER BEAM

A method and system for providing copy-protected optical medium using transient optical state change security materials capable of changing optical state and software code to detect such change in optical state.

STORAGE MEDIUM FOR DATA WITH IMPROVED DIMENSIONAL STABILITY

This disclosure relates to a data storage medium, and in particular to a data storage medium comprising at least one high (Young's) modulus layer used to control the overall degree of flatness in the storage medium.

Storage medium for data with improved dimensional stability

This disclosure relates to a data storage medium, and in particular to a data storage medium comprising at least one high modulus layer used to control the overall degree of flatness in the storage medium.

Optical information recording medium

In an optical information recording medium, a first sub-information area, a second sub-information area, and the main information area are provided in order from the center of the optical information recording medium in an outer peripheral direction. A first groove is formed in the first boundary area between the first sub-information area and the second sub-information area and a second groove is formed in the second boundary area between the second sub-information area and the main information area.

Scanning optical media during label printing

A visible light characteristic changing layer formed from photosensitive or heat-sensitive material is formed in a location which can be viewed from a part of a label surface of an optical disk. The optical disk is set on a turntable of an optical disk unit while the label surface of the optical disk is directed downward. The optical disk and an optical pickup are moved mutually along the plane of the optical disk. In synchronism with the relative movement, the power of a laser beam output from the optical pickup is modulated in accordance with image data, such as characters or graphic images to be printed, and the laser beam is emitted onto the visible light characteristic changing layer. As a result of the visible light characteristic changing layer being exposed to the laser beam, a visible-light reflectivity of the visible light characteristic changing layer is changed, thereby forming a image corresponding to the image data on the label surface.

Optical recording medium

An optical recording medium of the present invention is a lamination body having two light transmissive substrates not less than 50 μm in thickness and an optical information recording layer not less than 100 μm in thickness that is provided between the two light transmissive substrates and is comprised of an optical recording material where information is recorded by recording light, wherein a side edge portion of the lamination body is covered so that edges of the light transmissive substrates and the optical information recording layer are not exposed.

Data storage media containing carbon and metal layers

Optical information media containing a metal material layer and a carbon material layer are disclosed. The layering of the metal material layer and the carbon material layer are designed to reduce or eliminate problems associated with oxidation and berm formation during writing of data to the media.

Optical information recording medium

A phase-changing optical disk solving the problem of difference in recording sensitivity between the land and groove without complexing configuration of the recording device or optical disk production scheme. The present invention provides a phase-changing optical disk including a substrate 11, provided with guiding grooves 17 to form the lands and grooves as the recording tracks, which are laminated with a first dielectric layer 12, second dielectric layer 13, recording layer 14, third dielectric layer 15 and reflection layer 16 in this order, wherein the material for the first dielectric layer 12 has a higher thermal conductivity than that for the second dielectric layer 13, and thickness of the second dielectric layer 13 is smaller than depth ds of the guiding groove 17. This accelerate thermal diffusion H2 from the both ends of the groove toward the first dielectric layer 12, decreasing recording sensitivity of the groove to a level of the land, thermal diffusion H1 from which would ...

Optical disc and optical disc device

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal ...

OPTICAL DISC AND OPTICAL DISC DEVICE

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal ...

OPTICAL INFORMATION RECORDING MEDIUM

An optical information recording medium includes: a substrate; two or more information signal layers provided on the substrate; and a cover layer provided on the information signal layers. At least one of the two or more information signal layers is provided with an inorganic recording layer including Pd oxide, a first protective layer provided on a first main surface of the inorganic recording layer, and a second protective layer provided on a second main surface of the inorganic recording layer. And at least one of the first protective layer and the second protective layer includes a compound oxide of Si oxide, In oxide and Zr oxide as a main component. 1. An optical information recording medium comprising:a substrate;two or more information signal layers provided on the substrate; anda cover layer provided on the information signal layers,wherein at least one layer out of the two or more information signal layers is provided with an inorganic recording layer including Pd oxide, a first protective layer provided on a first main surface of the inorganic recording layer, and a second protective layer provided on a second main surface of the inorganic recording layer, andat least one of the first protective layer and the second protective layer includes a compound oxide of Si oxide, In oxide and Zr oxide as a main component.2. The optical information recording medium according to claim 1 ,wherein any one surface of sides of the substrate and the cover layer is a light irradiation plane irradiated with light in order to record or reproduce information signals on the two or more information signal layers, anda layer which is opposite to the light irradiation plane out of the first protective layer and the second protective layer includes the compound oxide.3. The optical information recording medium according to claim 1 ,wherein both the first protective layer and the second protective layer include the compound oxide as a main component.4. The optical information ...

LASER BEAM POWER MODULATION PATTERN DECISION METHOD, DEVICE FOR RECORDING DATA ONTO OPTICAL RECORDING MEDIUM, AND OPTICAL RECORDING MEDIUM

It is an object of the present invention to provide a method for determining a pattern for modulating the power of a laser beam which can determine a pattern for modulating the power of a laser beam so that data can be recorded in a write-once type optical recording medium with a laser beam having a low recording power at a high linear recording velocity. The method for determining a pattern for modulating the power of a laser beam according to the present invention includes the steps of determining pulse train patterns by fixing a recording power at a predetermined level and varying the level of a bottom power, modulating the power of the laser beam in accordance with the pulse train patterns to record first test signals in the optical recording medium, reproducing the first test signals, determining the optimum level of the bottom power based on the amplitude of the thus reproduced first test signals, determining pulse train patterns by fixing the bottom power at the optimum level and ...

Phase change recording with crystallization improving layer

An information recording medium (50) includes at least a recording layer (5) formed on a substrate (1), the recording layer (5) including a phase change layer (4) in which a reversible phase change is caused between a crystalline state and an amorphous state by irradiation of a light beam (27), and a crystallization-ability improving layer (3) for improving a crystallization ability of the phase change layer. The crystallization-ability improving layer (3) is formed of a halogenide and before the phase change layer (4) is formed. Thus, crystal nucleus generation and crystal growth are caused during formation of the phase change layer (4), so that at least a portion of the phase change layer (4) is in the crystalline phase after the formation. Thus, information signals can be recorded/reproduced at a high density and a high linear velocity, and thus the present invention provides a highly reliable optical information recording medium. Further, the present invention provides an information ...

Information recording medium

In an information recording medium having a recording layer (1) for recording information by heating through incoming energy, at least one of an interference layer (2) and an absorption layer for the incoming energy is provided on the energy-incoming side of the recording layer to reduce the reflected energy from the information recording medium and increase the quantity of heat input into the recording layer. The temperature of the recording layer is rapidly enhanced, and rapid writing is made possible thereby. Writing or erasing can be made with less incoming energy, and thus the writing sensitivity or erasing sensitivity of the information recording medium can be increased.

OPTICAL RECORDING DISC

PROBLEM TO BE SOLVED: To provide an optical recording disc which is capable of recording/regenerating data composed of a series of recording marks including recording marks and blank regions; significantly increasing recording capacity; and improving the C/N ratio of a regenerative signal and its regenerative durability, even in case the length of the recording mark and the length of the blank region between the adjacent recording marks, are less than the resolution threshold limit. SOLUTION: This optical recording disc is equipped with a substrate 2, a reflective layer 3, a third dielectric layer 4, a photoabsorbing layer 5, a second dielectric layer 6, a decomposition reaction layer 7 containing a platinum oxide as a main component, a first dielectric layer 8 and a light transmitting layer 9. When the decomposition reaction layer 7 is irradiated with a laser light 20 through the light transmitting layer 9, the platinum oxide contained in the decomposition reaction layer 7 as a main component ...

INFORMATION RECORDING MEDIUM

PURPOSE: To prevent the warpage and deformation by moisture absorption by providing a hygroscopic expansion layer having hygroscopic expandability on an information recording layer provided on a substrate. CONSTITUTION: The information recording layer 3 is formed via a moisture resistant protective layer 4 on the plastic substrate 1 consisting of a polycarbonate resin and the hygroscopic expansion layer 7 is formed via the moisture resistant protective layer 4 on the layer 3. This layer 7 consists of the polycarbonate resin which is the same material as the material of the substrate 1. The substrate 1 expands by absorbing moisture and the layer 7 expand as well when the magneto-optical disk constituted in such a manner is exposed to the high moisture. The expansion of the substrate 1 is eventually offset by the expansion of the layer 7 in this way and the warpage and deformation quantity over the entire part of the disk is decreased. The once absorbed moisture is removed at about the same ...

INFORMATION RECORDING MEDIUM AND ITS MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To provide an information recording medium wherein a phase change of a recording layer is generated by low electric energy in the information recording medium to which electric energy is applied. SOLUTION: In a memory 207 wherein a lower electrode 202, a recording part 203 and an upper electrode 204 are formed in this order on a substrate 201, the recording part 203 includes a cylindrical recording layer 205 and a dielectric layer 206 enclosing the recording layer 205. COPYRIGHT: (C)2008,JPO&INPIT ...

VERFAHREN, INFORMATIONSTRÄGER, UND SYSTEM

HOLOGRAPHISCHES SPEICHERMATERIAL

ICHER

Optisches Aufzeichnungsmedium

WIEDERBESCHREIBBARES OPTISCHES AUFZEICHNUNGSMEDIUM UND SEINE VERWENDUNG

STORAGE MEDIUM WITH A DATA LAYER AND A DETECTION LAYER

OPTICAL INFORMATION RECORDING MEDIUM

MULTI-MARK-RECORDABLE OPTICAL DATA MEMORY MEDIUM AND USE OF SUCH A MEDIUM

WITH AT LEAST AN PHOTO-SENSITIVE LAYER AND A DEFORMATION-CASH LAYER EQUIPMENT OPTICAL DATA HANDLING

HOLOGRAPHIC MEMORY MATERIAL

Optical recording medium

MATERIALS FOR OPTICAL MEDIUM COPY-PROTECTION TRANSIENTLY REACTING TO A READER BEAM

A method and system for providing copy-protected optical medium using transient optical state change security materials capable of changing optical state and software code to detect such change in optical state.

OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING METHOD

An optical alignment film and a liquid crystal thin film are adjacently formed. These films are irradiated with light. The optical alignment film is aligned, and the viscosity of the liquid crystal thin film is lowered because of the increase of the temperature due to light irradiation. The liquid crystal molecules in the liquid crystal thin film are aligned similarly to the alignment of the optical alignment film by use of the intermolecular force at the interface between the optical alignment film and the liquid crystal thin film. The alignment of the liquid crystal molecules allows the recorded information to be held. While using this optical alignment film, a sufficiently large amount of signals are realized, and the thermal stability and the stability against light irradiation are ensured.

QUADRILAYER OPTICAL DRAW MEDIUM

可重写光学数据存储介质及这种介质的应用

... 描述了一种相变型光学数据存储介质(20)，具有一记录叠(2)，记录叠(2)具有一记录层(6)和一金属反射层(3)，还包括至少一个由铟锡氧化物材料(ITO)构成的透明层(4、8)。在记录叠(2)中利用ITO层(4、8)来改进记录层(6)的冷却行为并提供良好的光学对比度。因此，就可以实现较高的数据率。 ...

REWRITABLE OPTICAL RECORD CARRIER

A rewritable optical record carrier comprising a first substrate carrying a first recording stack of layers, which recording stack comprises, a first dielectric layer, a recording layer comprising a phase-change recording material, a second dielectric layer, and a metal mirror layer. In order to achieve a maximum difference between the reflection of the crystalline regions and the amorphous region, said first dielectric layer has a thickness d1 in the range of 20 nm to 50 nm, and said second dielectric layer has a thickness d2 according to the relation 0.0225*d - 2.6572*d + 173.3(nm) < d < 0.0225*d - 2.6572*d + 213.3(nm) when the mirror layer comprises aluminum, or a thickness d according to the relation 0.0191*d - 2.0482*d + 149.6 (nm) < d < 0.0191*d - 2.0482*d + 189.6(nm) when the mirror layer comprises silver.222222122222122 © KIPO & WIPO 2007 ...

Information recording and reproducing apparatus, program for controlling same, computer-readable storage medium, method for controlling information recording and reproducing apparatus, and information storage medium

An invention disclosed includes a layer number obtaining section ( 222 ) for determining which information storage layer (L 1 ) has been accessed and a layer type identifying section ( 223 ) for identifying a type of the information storage layer (L 1 ) determined by the layer number obtaining section ( 222 ). With the configuration, even in a case where an information recording and reproducing apparatus accesses an information storage layer different from an intended information storage layer by false operation or the like, it is still possible to dissolve mismatching between a recording or reproduction control scheme being set up and a recording or reproduction control scheme suitable for the information storage layer thus accessed.

Information recording medium, optical information recording and reproducing apparatus, optical information recording and reproducing method and manufacturing method of information recording medium

To provide an information recording medium which is capable of reducing damage to a recording layer while improving environmental resistance of the recording layer and which enables information to be recorded or reproduced at a high density and a high sensitivity, an optical information recording and reproducing apparatus, an optical information recording and reproducing method, and a manufacturing method of an information recording medium. An information recording medium ( 24 ) includes: a substrate ( 1 ); first to m th (where m is an integer equal to or greater than 1) recording layers ( 2 ) respectively provided on an incident side of recording light or reproducing light with respect to the substrate ( 1 ) in order of distance closer to the incident side; and first to m th (where m is an integer equal to or greater than 1) negative refractive index layers ( 3 ) respectively provided on the incident side of the recording light or the reproducing light with respect to the m th recording layer ( 2 ) in order of distance closer to the incident side, wherein an i th (1≦i≦m) recording layer ( 2 ) and an i th negative refractive index layer ( 3 ) are alternately provided on the substrate ( 1 ), and the first to m th negative refractive index layers ( 3 ) effectively have a negative refractive index at a wavelength of the recording light or the reproducing light.

Recording layer for optical information recording medium, optical information recording medium, and sputtering target

A recording layer for optical information recording medium excellent in recording property, an optical information recording medium including the recording layer and a sputtering target useful for formation of the recording layer are provided. A recording layer for an optical information recording medium on which recording is performed through irradiation with laser light, the recording layer including an oxide of a metal of which an absolute value of the standard free energy of oxide formation per 1 mol of oxygen is larger than that of Pd (hereinafter referred to metal X) and a Pd oxide, wherein the Pd oxide includes a Pd monoxide and a Pd dioxide, and wherein a ratio of the Pd atom to a total of the metal X atom and the Pd atom which are contained in the recording layer is 4 to 85 atomic %.

Multilayer optical recording medium

An object of the present invention is to increase the number of stacked layers in a multilayer optical recording medium while simplifying the design of the multilayer optical recording medium. Provided is a multilayer optical recording medium 10 including at least four recording and reading layers from which information can be reproduced by light irradiation, the layers stacked through intermediate layers. The multilayer optical recording medium 10 includes the plurality of recording and reading layers that are continuous in order of stacking and includes at least one recording and reading layer group in which reflectance in a stacked state decreases from a near side of a light incident surface to a far side. A single-layer reflectance of the nearest recording and reading layer is set to 0.2% or more and less than 2.0%, and a light transmittance improvement process is applied to the light incident surface.

Optical information recording medium

An optical information recording medium including: a substrate; two or more information signal layers provided on the substrate; and a cover layer provided on the information signal layers, wherein the surface of one of the side of the substrate and the cover layer is a light irradiation plane, wherein at least one of the information signal layers other than the information signal layer at the deepest portion from the light irradiation plane includes an inorganic recording layer that includes a W oxide and a Pd oxide, a first protective layer that is provided on a first principal plane of the inorganic recording layer, and a second protective layer that is provided on a second principal plane of the inorganic recording layer, wherein at least one of the first protective layer and the second protective layer is a layer with an extinction coefficient of 0.05 to 0.6.

Servo controller and servo system including the same

A servo controller in a system includes a kick/brake control unit and a compensation unit. The kick/brake control unit determines an internal parameter based on an external control signal and an operation state of a plant. The compensation unit generates a driving control signal based on an error signal supplied from the plant and the internal parameter, and supplies the driving control signal to the plant. The plant performs a steady-state operation during a first operation mode and a target moving operation during a second operation mode based on the driving control signal.

Optical recording disc and method for recording or reading data on the optical recording disc

An optical recording disc comprises: at least ten optical recording layers; a plurality of intermediate layers each interposed between adjacent optical recording layers; a base film configured to support the optical recording layers and the intermediate layers; a cover layer disposed opposite to the base film with the optical recording layers and the intermediate layers interposed therebetween. The optical recording disc is in the shape of a disc as a whole. The total thickness of the optical recording disc is not more than 300 micrometers, and the optical recording disc provides flexibility.

INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING SAME

An information recording medium including three or more information layers, wherein: at least one information layer includes a recording layer and a nucleation layer; the recording layer contains a material that is represented by formula (1) [(GeTe)(InTe)]Sb(mol %) with x satisfying 0.8≦x<1.0 and y satisfying 95≦y<100; the nucleation layer contains a material that is represented by formula (2) (GeTe)(BiTe)(mol %) with z satisfying 10≦z≦71; and the nucleation layer is in contact with the recording layer. This information recording medium is capable of achieving sufficient signal amplitude even in cases where a small recording mark is formed, and is also capable of stably maintaining a small recording mark. 2. The information recording medium according to claim 1 , wherein an average crystal particle diameter of crystal particles constituting the recording layer is less than 100 nm.3. The information recording medium according to claim 1 , wherein at least one of the information layers provided on a light incident side comprises the recording layer and the nucleation layer.4. The information recording medium according to claim 1 , wherein all the information layers on a light incident side comprise the recording layer and the nucleation layer.5. The information recording medium according to claim 1 , wherein all the information layers comprise the recording layer and the nucleation layer.6. The information recording medium according to claim 1 , wherein the nucleation layer has a thickness of 0.1 nm or more and 2.0 nm or less.7. The information recording medium according to claim 1 , wherein the recording layer has a thickness of 3 nm or more and 10 nm or less.8. An information recording medium comprising three or more information layers and being capable of recording and reproducing information by light claim 1 , wherein at least one information layer comprises a recording layer;the recording layer comprises Ge, Te, In, Bi and Sb; andan average crystal particle ...

OPTICAL INFORMATION RECORDING MEDIUM, AND SUBSTRATE AND MANUFACTURING METHOD FOR THE OPTICAL INFORMATION RECORDING MEDIUM

In an optical disk including at least a rewritable phase change material and comprising a recording layer having a reflectivity of more than 15%, an address output value as an address pit signal component occupying in a reproduced signal in a non recording state is prescribed to be 0.18 though 0.27 or a numerical aperture of an address pit signal occupying in a reproduced signal in a non recording state is prescribed to be more than 0.3. 12.-. (canceled)3. An optical information recording medium comprising:a substrate formed with an area having deflected grooves,a recording layer being recordable by a laser beam, anda transmission layer having a thickness of 0.1 mm,wherein address information is recorded in an area on said substrate along a track direction of a groove together with a synchronous signal.4. A reproducing method for reproducing an optical information recording medium , said optical information recording medium comprising:a substrate formed with an area having deflected grooves,a recording layer being recordable by a laser beam, anda transmission layer having a thickness of 0.1 mm,wherein address information is recorded in an area on said substrate along a track direction of a groove together with a synchronous signal, andwherein said reproducing method reproduces an optical information recording medium by irradiating a laser beam on said recording layer, through said transmission layer as a light path, and extracts said synchronous signal. This application is a Continuation of co-pending application Ser. No. 13/370,626, filed Feb. 10, 2012 (allowed), which is a Continuation of application Ser. No. 13/029,578, filed Feb. 17, 2011 (now U.S. Pat. No. 8,139,470), which is a Continuation of application Ser. No. 12/647,029 filed Dec. 24, 2009 (now U.S. Pat. No. 7,911,931), which is a Continuation of application Ser. No. 12/144,168 filed Jun. 23, 2008 (now U.S. Pat. No. 7,664,007), which is a Continuation of application Ser. No. 11/434,783 filed May 17, 2006 ...

OPTICAL RECORDING MEDIUM

A recording layer is formed from an organic material (thermoplastic resin, thermosetting resin) having an oxygen element ratio of 9.1% or more. Examples include polyethersulfone, polyimide, and polyethylene. Alternatively, the recording layer is formed from a material in which a low-molecular compound is added to a resin and which has an oxygen element ratio after mixing of 9.1% or more. 1. An optical recording medium comprising a bulk type recording layer in which hole marks are formed by laser light irradiation , wherein the recording layer contains an organic material having an oxygen element ratio of 9.1% or more.2. The optical recording medium according to claim 1 , wherein the organic material is a thermoplastic resin.3. The optical recording medium according to claim 1 , wherein the organic material is a thermosetting resin.4. The optical recording medium according to claim 1 , wherein the oxygen element ratio of the organic material is 25% or less.5. The optical recording medium according to claim 1 , wherein the organic material is any one of polyethersulfone claim 1 , polyimide claim 1 , polyethylene claim 1 , polyoxymethylene claim 1 , polymethyl methacrylate claim 1 , polyvinyl acetate claim 1 , diallyl phthalate claim 1 , polyamide imide claim 1 , and polyurethane.6. The optical recording medium according to claim 1 , wherein the recording layer contains a material in which a plurality of resins having oxygen element ratios of 9.1% or more are mixed.7. An optical recording medium comprising a bulk type recording layer in which hole marks are formed by laser light irradiation claim 1 , wherein the recording layer contains a material in which a low-molecular compound is added to a resin and which has an oxygen element ratio of 9.1% or more.8. The optical recording medium according to claim 7 , wherein the material is a material having an oxygen element ratio of 9.1% or more adjusted by adding a low-molecular compound to a resin having an oxygen element ...

OPTICAL INFORMATION RECORDING MEDIUM AND OPTICAL INFORMATION RECORDING METHOD

An optical information recording medium includes: a recording layer comprising a multi-photon absorption compound and a one-photon absorption compound; and a supporting member (base layer ) configured to support the recording layer . In this optical information recording medium, absorption of multiple photons by the multi-photon absorption compound and absorption of one photon by the one-photon absorption compound cause a void to be generated in the recording layer, whereby information is recordable by modulation based on a presence or absence of a void. 1. An optical information recording medium comprising:a recording layer comprising a multi-photon absorption compound and a one-photon absorption compound; anda supporting member configured to support the recording layer,wherein absorption of multiple photons by the multi-photon absorption compound and absorption of one photon by the one-photon absorption compound cause a void to be generated in the recording layer, whereby information is recordable by modulation based on a presence or absence of a void.2. The optical information recording medium according to claim 1 , wherein at least one of the multi-photon absorption compound and the one-photon absorption compound is a foamable material which generates a void when it absorbs light and temperature thereof increases.3. The optical information recording medium according to claim 1 , wherein in addition to the multi-photon absorption compound and the one-photon absorption compound claim 1 , the recording layer comprises a vaporizable material which generates a void when the multi-photon absorption compound and the one-photon absorption compound absorb light and temperature of the vaporizable material increases.4. The optical information recording medium according to claim 1 , wherein the recording layer comprises a polymer binder claim 1 , and wherein voids in the recording layer are erasable by heating.5. The optical information recording medium according to claim 1 ...

Optical information recording medium and method for manufacturing same

An optical information recording medium 10 comprises: a plurality of recording layers 14 , each of which undergoes a change in a refractive index by irradiation with a recording beam; and at least one intermediate layer 15 provided between the plurality of recording layers 14 . The recording layer 14 and the intermediate layer 15 have different refractive indices, and, among interfaces between the plurality of recording layers 14 and the at least one intermediate layer 15 , a recording layer 14 and an intermediate layer 15 disposed adjacent to the recording layer 14 at an incident side from which the recording beam enters the recording layer 14 are merged with each other at an interface (near-side interface 19 ) therebetween, whereby a refractive index gradually changes at the interface.

OPTICAL INFORMATION RECORDING MEDIUM

Optical information recording medium comprises: a plurality of recording layers , each of which undergoes a change in refractive index by irradiation with recording beam; and an intermediate layer provided between recording layers . The recording layer contains polymer binder and dye dispersed in the polymer binder, and at least in proximity to an interface (far-side interface ) between the intermediate layer and a recording layer disposed adjacent to incident side of the intermediate layer from which the recording beam enters the intermediate layer, the intermediate layer has refractive index different from that of the recording layer . Glass transition temperature of the polymer binder is lower than melting point and decomposition point of the dye, and refractive index of the polymer binder changes by receiving heat generated when the dye absorbs the recording beam, whereby information is recordable in the recording layer. 1. An optical information recording medium comprising:a plurality of recording layers, each of which undergoes a change in a refractive index by irradiation with a recording beam; andat least one intermediate layer provided between the recording layers,wherein each of the recording layers contains a polymer binder and dye dispersed in the polymer binder,wherein at least in proximity to an interface between the intermediate layer and a recording layer disposed adjacent to an incident side of the intermediate layer from which the recording beam enters the intermediate layer, the intermediate layer has a refractive index different from that of the recording layer,wherein a glass transition temperature of the polymer binder is lower than a melting point and a decomposition point of the dye, andwherein a refractive index of the polymer binder changes by receiving heat generated when the dye absorbs the recording beam, whereby information is recordable in the recording layer.2. The optical information recording medium according to claim 1 , wherein ...

Optical information recording medium and method for manufacturing same

Optical information recording medium 10 comprises: a plurality of recording layers 14 which undergo a change in refractive index by irradiation with recording beam; and an intermediate layer 15 provided between the recording layers 14 . The intermediate layer 15 includes first intermediate layer 15 A disposed adjacent to a recording layer 14 at a side opposite to an incident side from which recording beam enters the recording layer, and second intermediate layer 15 B disposed adjacent to a recording layer 14 at an incident side from which the recording beam enters the recording layer. The first intermediate layer 15 A and the recording layer 14 have different refractive indices, whereas the second intermediate layer 15 B and the recording layer 14 have substantially the same refractive index. The first and the second intermediate layer 15 A, 15 B are merged with each other at an interface therebetween, whereby refractive index gradually changes at the interface.

Data Recording Medium and Method for Generating a Reference Clock Signal

Various embodiments provide a recording medium. The recording medium may include a dedicated servo layer for providing servo information. The dedicated servo layer may include a plurality of tracks. A first track may include a first servo signal. A second track may include a second servo signal. The first servo signal and the second servo signal may include a plurality of common transitions. The transitions may be provided at a pre-determined frequency. 1. A recording medium , comprising:a dedicated servo layer for providing servo information,wherein the dedicated servo layer comprises a plurality of tracks,wherein a first track comprises a first servo signal,wherein a second track comprises a second servo signal,wherein the first servo signal and the second servo signal comprise a plurality of common transitions, wherein the common transitions are provided at a pre-determined frequency.2. The recording medium of claim 1 , wherein the plurality of common transitions comprise transitions on a cross track direction.3. The recording medium of claim 1 ,wherein the first servo signal comprises a signal of a first frequency;wherein the second servo signal comprises a signal of a second frequency;wherein the first frequency and the second frequency have an integer least common multiple.4. The recording medium of claim 1 , wherein the first frequency and the second frequency have a ratio of n:m with integer numbers n and m.5. The recording medium of claim 1 , wherein the first frequency and the second frequency have a ratio of n+1:n with an integer number n.6. The recording medium of claim 1 , wherein the servo signals comprise servo bursts.7. The recording medium of claim 6 , wherein each servo pattern comprises a plurality of alternately arranged preambles and servo bursts.8. The recording medium of claim 1 , wherein each servo signal comprises information for providing positioning information.9. A data storage device claim 1 , comprising the recording medium of .10. The ...

OPTICAL INFORMATION RECORDING MEDIUM

An optical information recording medium has a first information recording layer () and a second information recording layer () each of which includes (i) a group of pre-pits () constituting marks () and spaces () and (ii) a super-resolution film (), the marks () and the spaces () having different lengths, an average length of a smallest mark that is smallest in length and a smallest space that is smallest in length being less than or equal to a resolution limit of a reproduction optical system for reproducing information recorded on the first information recording layer () and the second information recording layer (), the group of pre-pits () being formed so that a push-pull signal for the reproduction optical system to reproduce the information recorded by the group of pre-pits is negative in polarity. This provides an inexpensive and high-capacity multilayer optical information recording medium based on a super-resolution technology. 1: An optical information recording medium comprising:a light transmittable layer having an incident surface on which reproduction light is incident;two or more information recording layers;a substrate, the light transmittable layer, the information recording layers, and the substrate being stacked in this order from an incident side on which the reproduction light is incident; andan intermediate layer that separates the information recording layers from each other,the two or more information recording layers having information recorded thereon as marks and spaces by a predetermined modulation method,the two or more information recording layers each including (i) a group of pre-pits constituting the marks and the spaces and (ii) a super-resolution film,the marks and the spaces constituted by the group of pre-pits having different lengths,an average length of a smallest mark that is smallest in length among the marks constituted by the group of pre-pits and a smallest space that is smallest in length among the space constituted by the ...

Optical information storage medium reproduction apparatus and control method of the same

In an optical information storage medium reproduction apparatus ( 10 ) for reproducing an optical information storage medium including a plurality of information recording layers each including a recording mark having a length shorter than an optical system resolution limit, reproduction laser power for reading an information recording layer closest to a reproduction-laser-incident surface of the optical information storage medium is set to be lower than reproduction laser power for reading an information recording layer farthest from the reproduction-laser-incident surface but not lower than minimum reproduction laser power that satisfies a reproduction signal characteristic that the optical information storage medium reproduction apparatus ( 10 ) requires. With the arrangement, it is possible to prevent that the information recording layer closest to the reproduction-laser-incident surface is irradiated wrongly with reproduction laser having high reproduction laser power, thereby making it possible to obtain successful reproduction quality. That is, it is possible to realize the optical information storage medium reproduction apparatus ( 10 ) that can set optimum reproduction laser power and perform stable super resolution reproduction.

OPTICAL DISC WITH A DISCONTINUOUS SURFACE STRUCTURE

Disclosed herein is an optical disc having an information area situated between an internal edge and an external edge of the optical disc. The optical disc includes a first substrate, a second substrate, a recording layer, a reflecting layer and a number of surface structures. The second substrate is disposed over the second substrate, the recording layer and the reflecting layer are disposed between the two substrates, and the reflecting layer is disposed between the first substrate and the recording layer. The surface structures are discontinuously disposed on the surface of the second substrate. 1. An optical disc having an internal edge , an external edge and an information area situated therebetween , the optical disc comprisinga first substrate;a second substrate disposed above the first substrate;a recording layer disposed between the first substrate and the second substrate;a reflecting layer disposed between the first substrate and the recording layer; anda surface structure discontinuously disposed on a surface of the second substrate, the surface structures comprising: 'at least one second stripe-protrusion formed on the surface, the second stripe-protrusion having a second stripe-body, a first pincer portion and a second pincer portion, both the first and second pincer portions extending from the second stripe-body in a direction parallel to the surface so that an indentation being formed between the first and second pincer portions, wherein the first tip portion extends into the indentation between the first and second pincer portions and is not in contact with the first and second pincer portions such that a curved groove is formed between the first tip portion and the first and second pincer portions.', 'at least one first stripe-protrusion formed on the surface, the first stripe-protrusion having a first stripe-body and a first tip portion extending from the first stripe-body in a direction parallel to the surface, the first tip portion having a ...

Data Recording Medium, Method for Generating a Reference Clock Signal, and Data Storage Device

Various embodiments provide a recording medium. The recording medium may include: a dedicated servo layer for providing servo information, wherein the dedicated servo layer comprises a plurality of tracks, wherein a first track comprises a first servo signal of a first frequency, wherein a second track comprises a second servo signal of a second frequency, and wherein the first servo signal and the second servo signal comprise a common single tone signal. 1. A recording medium , comprising:a dedicated servo layer for providing servo information,wherein the dedicated servo layer comprises a plurality of tracks,wherein a first track comprises a first servo signal of a first frequency,wherein a second track comprises a second servo signal of a second frequency,wherein the first servo signal and the second servo signal comprise a common single tone signal.2. The recording medium of claim 1 ,wherein the single tone signal comprise a common signal on a cross track direction.3. The recording medium of claim 1 ,wherein each servo signal comprises information for providing positioning information.4. A data storage device claim 1 , comprising the recording medium of .5. The data storage device of claim 4 , wherein the recording medium further comprises a data layer configured to record data therein.6. The data storage device of claim 4 , further comprising:a phase lock loop circuit configured to generate a reference clock signal for synchronization of at least one of read and write operations, based on the servo signals.7. A method for generating a reference clock signal for synchronization of at least one of a read operation and a write operation of a data storage device claim 4 , the method comprising:generating the reference clock signal based on a plurality of tracks in a dedicated servo layer of the data storage device,wherein a first track comprises a first servo signal of a first frequency,wherein a second track comprises a second servo signal of a second frequency, ...

Legally Safe Recordable Information Storage Medium

A recordable information consists of a flat polycarbonate disk having two main faces and a light sensitive film covering one main face and on which information may be recorded. The film is multi-layered with at least two elementary superposed layer respectively containing one element A and one element B, one of the layers containing an element chosen in the Group IIIa, while the other layer contains an element chosen in Groups Va or VIa; or one of layers contains an element from Groups IIa or IIb while the other layer contains an element from Group VI. The thickness of each layer is nearly identical and the overall thickness of the light-sensitive film being at least equal to 35 nm. A burning process for safely and durably recording information on such a medium is also disclosed. 19-. (canceled)10. A recordable information medium comprising:a flat polycarbonate disk having two main faces; anda light sensitive film overlying one of said main faces and on which information may be recorded,wherein the light sensitive film is a multilayer film comprising at least two elementary superposed layers respectively composed of a first element A and a second element B,wherein said light sensitive film has a total thickness of at least 35 nm, andwherein said at least two elementary superposed layers are distributed as follows:(I) a first one of the at least two elementary superposed layers being composed of said first element A being selected from the group IIIa and a second one of the at least two elementary superposed layers being made of said second element B being selected from Groups Va or Via, or(II) a first one of the at least two elementary superposed layers being composed of said first element A being selected from the group IIb and a second one of the at least two elementary superposed layers being made of said second element B selected from Group VI.11. A recordable information storage medium according to claim 10 , wherein the multilayer film is composed of two ...

RECORDING MEDIUM

A recording medium is provided with: a guide layer on which a guide track or tracks are formed; and a plurality of recording layers, wherein a same mark group is formed in a same rotational phase position of each of a plurality of guide tracks which are included in a beam spot of guide laser light, the mark group including a pair of record marks which are shifted by a predetermined distance toward a right side and a left side, respectively, from a track center. 1. A recording medium comprising:a guide layer on which a guide track or guide tracks for tracking are formed; anda plurality of recording layers laminated on the guide layer, whereina same mark group is formed in a same rotational phase position of each of at least two guide tracks out of a plurality of guide tracks which are included in a beam spot which is formed on the guide layer by guide laser light irradiated on the guide layer,the mark group includes a pair of record marks which are shifted by a predetermined distance toward a right side and a left side, respectively, from a track center of the each guide track.2. The recording medium according to claim 1 , wherein a depth of the pair of record marks is less than λ/6n (where λ is a wavelength of the guide laser light and n is a substrate refractive index of the recording medium).3. The recording medium according to claim 1 , wherein a depth of the pair of record marks is λ/8n (where λ is a wavelength of the guide laser light and n is a substrate refractive index of the recording medium).4. The recording medium according to claim 1 , wherein the same mark group is formed in the same rotational phase position of each of the plurality of guide tracks.5. The recording medium according to claim 1 , wherein the same mark group is formed in the same rotational phase position of each of other guide tracks other than at least one guide track located near a center claim 1 , out of the plurality of guide tracks.6. The recording medium according to claim 1 , ...

OPTICAL RECORDING MEDIUM

An object of the present invention is to provide a recordable optical recording medium whose characteristics do not deteriorate when recording is conducted in a high-temperature environment. The present invention provides a recordable optical recording medium comprising a substrate as well as at least a reflection layer, recording layer, and light transmission layer provided on the substrate, wherein the recording layer of said optical recording medium contains (a) an azo metal complex dye and (b) another dye whose decomposition temperature is 240° C. to 360° C. 1. A recordable optical recording medium comprising a substrate as well as at least a reflection layer , recording layer , and light transmission layer provided on the substrate , wherein the recording layer of said optical recording medium contains (a) an azo metal complex dye and (b) another dye whose decomposition temperature is 240° C. to 360° C.2. An optical recording medium according to claim 1 , wherein the λmax of dye (b) in TFP solution is 250 to 400 nm.3. An optical recording medium according to claim 2 , wherein the refractive index (n) and absorption coefficient (k) of dye (b) are 1.6 to 2.0 and 0.20 to 0.70 claim 2 , respectively claim 2 , for 405 nm wavelength.7. An optical recording medium according to claim 1 , wherein the content of dye (b) in the recording layer is 10 to 40 percent by weight relative to the weight of all organic dye in the recording layer.8. An optical recording medium according to claim 2 , wherein the content of dye (b) in the recording layer is 10 to 40 percent by weight relative to the weight of all organic dye in the recording layer.9. An optical recording medium according to claim 3 , wherein the content of dye (b) in the recording layer is 10 to 40 percent by weight relative to the weight of all organic dye in the recording layer.10. An optical recording medium according to claim 1 , wherein the light transmission layer has a one-layer configuration.11. An optical ...

OPTIONAL DISK AND METHOD FOR MANUFACTURING THE SAME

A first substrate is formed to include a surface on which a first record layer is formed, and which includes an inner circumferential portion on which a ring-shaped member is provided. Ultraviolet curing resin is dropped onto part of the surface which is located inward of the ring-shaped member, and the first substrate is then spun to coat the first record layer with the ultraviolet curing resin. Furthermore, a second substrate is formed to include a surface on which a second record layer is formed, and the second substrate is spun to coat the second record layer with ultraviolet curing resin. Then, the first and second record layers are made to face each other, and the first and second substrates are bonded to each other by the ultraviolet curing resin. 1. (canceled)2. An information storage medium comprising:a substrate;a first recording layer formed on the substrate;a spacer formed on the first recording layer;a second recording layer formed on the spacer; anda cover layer formed on or over the second recording layer, whereinan optical beam is incident to the information storage medium through the cover layer,a ring-shaped projection is located radially inward of a recording area, andthe ring-shaped projection is projected from the substrate and in a direction which is opposite to an optical beam incident direction. This application is a continuation application of U.S. Ser. No. 12/727,988, filed Mar. 19, 2011, which is a continuation application of U.S. Ser. No. 11/725,480, filed Mar. 20, 2007, which is a continuation application of U.S. Ser. No. 10/849,831, filed May 21, 2004, which claims priority under 35 U.S.C. 119(a)-(d) to Japanese Patent Application No. 2003-161037, filed Jun. 5, 2003, the entire contents of all of which are incorporated herein by reference.1. Field of the InventionThe present invention relates to an optical disk which includes a plurality of information record layers, and allows information to be recorded/reproduced on/from the ...

INFORMATION STORAGE MEDIUM, RECORDING METHOD, AND RECORDING APPARATUS

According to one embodiment, an information storage medium in which layer 0 and layer 1 are arranged from a read surface, a system lead-in area, data lead-in area, data area, and middle area are arranged from an inner circumference of the layer 0, and a system lead-out area, data lead-out area, data area, and middle area are arranged from an inner circumference of the layer 1. A guard track zone is arranged on a side of the data area in the data lead-out area, and a reference code zone, R physical format information zone, recording management zone, and drive test zone are arranged in the data lead-in area of the layer 0 and padding of the guard track zone of the data lead-out area is performed after padding of the drive test zone of data lead-in area and recording of the recording management zone. 1. (canceled)2. A multi-layered information storage medium comprising:a first layer; anda second layer,whereinthe first layer comprises a first recordable area with a first pre-groove,the second layer comprises a second recordable area with a second pre-groove,the first recordable area and the second recordable area are configured to store recording marks,an intensity of light reflected from the recording marks is higher than an intensity of light reflected from unrecorded portions,the first layer comprises a management data area,the management data area comprises a first management area, a second management area adjacent to the first management area, and a third management area adjacent to the second management area,the first management area is configured to store first management information relating to a first push-pull signal from the first pre-groove,the third management area is configured to store second management information relating to a second push-pull signal from the second pre-groove, andthe second management area is configured to store third management information relating to the first layer and fourth management information relating to the second layer.3. A ...

INFORMATION RECORDING MEDIUM AND HOLDING DEVICE FOR HOLDING INFORMATION RECORDING MEDIUM

An information recording medium according to one aspect of the present invention includes a disc substrate formed by a resin, and a thickness thereof in a data area is 0.2 mm or less. The information recording medium includes a step in an inner periphery area , the step having a height of 1 mm or more and 3 mm or less. The step includes an acute-angle edge portion used for positioning a center of the information recording medium when spinning the information recording medium ; and an angle θ of an inner side of a cross section of the acute-angle edge portion is 50 degrees or more and 80 degrees or less. 1. An information recording medium , comprising a disc substrate formed by a resin , whose thickness in a data area thereof is 0.2 mm or less , further comprising:a step in an inner periphery area of the information recording medium, the step having a height of 1 mm or more and 3 mm or less, wherein:the step includes an acute-angle edge portion used for positioning a center of the information recording medium when spinning the information recording medium; andan angle of an inner side of a cross section of the acute-angle edge portion is 50 degrees or more and 80 degrees or less.2. The information recording medium of claim 1 , wherein:the information recording medium includes a plurality of steps; andat least one of the plurality of steps includes the acute-angle edge portion.3. A holder for holding the information recording medium of claim 1 , comprising:a holding portion for holding the information recording medium; anda positioning section for positioning a center of the information recording medium,wherein the positioning section positions the center of the information recording medium by contacting the acute-angle edge portion of the step.4. The holder of claim 3 , wherein:the positioning section is movable along an axis-of-rotation direction of the information recording medium;the positioning section includes a tapered portion inclined with respect to the axis- ...

STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD

According to an embodiment, a storage medium includes a transparent resin substrate having a concentric or spiral groove and a recording film formed on the groove on the transparent resin substrate, a recording mark being formed by irradiation of a laser beam, wherein a reproduction durability count in a case where reproduction is continuously carried out by a laser beam is 1,000,000 or more. 1. An information storage medium comprising:A data area configured to store modulation and NRZI (non return to zero invert) conversion data, whereinthe modulation and NRZI conversion data is able to be reproduced with PRML (partial response maximum likelihood) method.2. A reproducing method for the information storage medium according to claim 1 , wherein the method comprises:irradiating the information storage medium with light; andreproducing the modulated data from the information storage medium.3. A reproducing apparatus for the information storage medium according to claim 1 , wherein the apparatus comprises:An optical head configured to irradiate the information storage medium with light; andA reproducing module configured to reproduce the modulated data from the information storage medium.4. A recording method for the information storage medium according to claim 1 , wherein the method comprises:irradiating the information storage medium with light; andrecording the modulated data on the information storage medium.5. A recording apparatus for the information storage medium according to claim 1 , wherein the apparatus comprises:A recording module configured to irradiate the information storage medium with light and to record the modulated data on the information storage medium. This application is a divisional application based on application Ser. No. 12/872,616, filed Aug. 31, 2010, which is a divisional of and claims the benefit of priority from U.S. application Ser. No. 11/358,105, filed Feb. 22, 2006, now U.S. Pat. No. 8,137,894, issued on Mar. 20, 2012, and claims ...

METHOD OF PRODUCING RECORDING MEDIUM, AND RECORDING MEDIUM

A method of producing a recording medium includes preparing a substrate of the recording medium, forming a first face recording layer at a first face side of the substrate, forming a first face protection layer for protecting the first face recording layer on the first face recording layer, forming a second face constituting whole or a part of a layer configuration at a second face side of the substrate, 1. A method of producing a recording medium , comprising:preparing a substrate of the recording medium;forming a first face recording layer at a first face side of the substrate;forming a first face protection layer for protecting the first face recording layer on the first face recording layer;forming a second face constituting whole or a part of a layer configuration at a second face side of the substrate;deactivating a protection feature of the first face protection layer; andforming a first face constituting whole or a part of a layer configuration of a first face on the first face protection layer.2. The method of producing a recording medium according to claim 1 , forming the second face layer includesforming a second face recording layer on the second face of the substrate; andforming a second face layer configuration including other recording layer on the second face recording layer.3. The method of producing a recording medium according to claim 1 , forming the second face layer includesforming a second face recording layer on the second face of the substrate;forming a second face protection layer for protecting the second face recording layer on the second face recording layer;deactivating a protection feature of the second face protection layer; andforming a second face layer configuration including other recording layer on the second face recording layer.4. The method of producing a recording medium according to claim 1 , forming the first face layer includesforming a layer configuration including other recording layer at a first face side on the first ...

OPTICAL DISC

In an optical disc including a discoid optical-disc substrate and a coating film formed on the optical-disc substrate, the optical-disc substrate includes a first region including the innermost periphery thereof and having a projection formed on the whole of the first region, and a second region located outside of the first region. The coating layer is formed on the second region. Before the coating film is formed, the thickness of the optical-disc substrate at the first region is greater than the thickness of the optical-disc substrate at the second region. After the coating film is formed, the total thickness of the optical-disc substrate at the second region and the coating film is greater than the thickness of the optical-disc substrate at the first region. 15-. (canceled)6. An optical disc comprising:a discoid optical-disc substrate; anda coating film formed on the optical-disc substrate, a first region including an innermost periphery of the optical-disc substrate and having a projection formed on a whole of the first region; and', 'a second region located outside of the first region, the coating layer being formed on the second region, and', 'before the coating film is formed, a thickness of the optical-disc substrate at the first region is greater than a thickness of the optical-disc substrate at the second region, and', 'after the coating film is formed, a total thickness of the optical-disc substrate at the second region and the coating film is greater than the thickness of the optical-disc substrate at the first region., 'wherein the optical-disc substrate comprises7. The optical disc according to claim 6 , wherein claim 6 , after the coating film is formed claim 6 , a difference between the total thickness of the optical-disc substrate at the second region and the coating film and the thickness of the optical-disc substrate at the first region is set to be equal to or less than 200 μm.8. The optical disc according to claim 6 , wherein a clamp area to be ...

INFORMATION RECORDING MEDIUM AND MANUFACTURING METHOD OF SAME

An information recording medium () of the present invention includes a substrate () and a recording layer provided on the substrate () and having optical properties that can be changed by irradiation with a laser beam. The recording layer is formed of a plurality of arrayed minute recording regions (e.g., phase-change particles ()). A part or all of the recording region is made of a recording material containing Te and O. The recording region has a length of 30 nm or less in an information recording direction. Preferably, the recording material further contains an element M, where M is at least one element selected from the group consisting of Pd, Au, and Pt. 1. An information recording medium comprising:a substrate; anda recording layer provided on the substrate and having optical properties that can be changed by irradiation with a laser beam, whereinthe recording layer is formed of a plurality of arrayed minute recording regions,a part or all of the recording region is made of a recording material containing Te and O,the recording region has a length of 30 nm or less in an information recording direction, and{'sup': 2', '2, 'when a complex refractive index of the recording material at a wavelength of a laser beam used for recording or reproduction is represented as n−ik, n−khas a negative value.'}2. The information recording medium according to claim 1 , wherein the recording material further contains an element M claim 1 , where M is at least one element selected from the group consisting of Pd claim 1 , Au claim 1 , and Pt.3. The information recording medium according to claim 1 , wherein the plurality of recording regions are isolated from each other.4. (canceled)5. The information recording medium according to claim 1 , further comprising a protective layer provided at least either between the recording region and the substrate or on the recording region claim 1 , or further comprising a protective layer covering a surface of the recording region.6. The ...

Recordable optical recording medium

A recordable optical recording medium is provided enabling reliably preventing the deterioration of the recording characteristics, even when stored for a long period of time in an environment of high temperature and humidity. A recordable optical recording medium includes a substrate, and on the substrate, a reflective layer, a recording layer, a protective layer, a light transmission layer in a single layer structure having optical transparency, and a hard coat layer. The recording layer is formed by addition of an additive which functions as reducing agent to an azo metal complex dye having a triazole structure.

OPTICAL RECORDING MEDIUM AND MANUFACTURING METHOD OF OPTICAL RECORDING MEDIUM

There is provided an optical recording medium including a substrate, an information recording layer that is formed on the substrate and has a single film structure formed by an oxide including W and Ru, and a light transmissive layer that is formed on the information recording layer. 1. An optical recording medium comprising:a substrate;an information recording layer that is formed on the substrate and has a single film structure formed by an oxide including W and Ru; anda light transmissive layer that is formed on the information recording layer.2. The optical recording medium according to claim 1 , wherein the information recording layer further includes at least one of Zn claim 1 , Sn claim 1 , In claim 1 , and Cu.3. The optical recording medium according to claim 1 , wherein a Ru content ratio in the information recording layer is smaller than 30% when an element other than Ru is set to 100.4. The optical recording medium according to claim 1 , wherein the information recording layer contains Sn claim 1 , and a Sn content ratio is smaller than 70% when W+Sn is set to 100.5. The optical recording medium according to claim 1 , wherein the oxide contains an amount of oxygen which is more than an amount of oxygen in a stoichiometric composition.6. A method of manufacturing an optical recording medium which includes a substrate claim 1 , an information recording layer claim 1 , and a light transmissive layer claim 1 , the method comprising:forming the substrate;forming the information recording layer which has a single film structure formed by an oxide including W and Ru through sputtering on the substrate; andforming the light transmissive layer on the information recording layer. The present application claims priority to Japanese Priority Patent Application JP 2012-153354 filed in the Japan Patent Office on Jul. 9, 2012, and JP 2013-099278 filed in the Japan Patent Office on May 9, 2013, the entire content of which is hereby incorporated by reference.The present ...

OPTICAL RECORDING MEDIUM, AND MANUFACTURING METHOD OF OPTICAL RECORDING MEDIUM

There is provided an optical recording medium including a substrate, an information recording layer that is formed on the substrate, and has a recording film including a W oxide and an Fe oxide, and a light transmissive layer that is formed on the information recording layer. 1. An optical recording medium comprising:a substrate;an information recording layer that is formed on the substrate, and has a recording film including a W oxide and an Fe oxide; anda light transmissive layer that is formed on the information recording layer.2. The optical recording medium according to claim 1 , wherein the recording film includes at least one or more oxides of Al claim 1 , Si claim 1 , Ti claim 1 , Zn claim 1 , In claim 1 , Sn claim 1 , Zr claim 1 , Ga claim 1 , Mn claim 1 , Ni claim 1 , Cu claim 1 , Pd claim 1 , and Ag in addition to the W oxide and the Fe oxide.3. The optical recording medium according to claim 1 , wherein the information recording layer has a single film structure of the recording film.4. The optical recording medium according to claim 1 , wherein the information recording layer has a dual film structure including the recording film and a protective film.5. The optical recording medium according to claim 1 , wherein the information recording layer has a triple film structure including a protective film claim 1 , the recording film claim 1 , and another protective film.6. The optical recording medium according to claim 1 , wherein the information recording layer is formed in a land/groove shape.7. A manufacturing method of an optical recording medium that includes a substrate claim 1 , an information recording layer claim 1 , and a light transmissive layer claim 1 , the method comprising:molding the substrate;forming the information recording layer on the substrate; andforming the light transmissive layer on the information recording layer,wherein, in the step of forming the information recording layer, formation of a recording film that includes a W oxide ...

Optical information recording medium and laminate for optical information recording medium

An optical information recording medium includes multiple laminated resin layers. At least one of interfaces between the resin layers has a refractive index which gradually changes in a thickness direction of the resin layers.

Optical disc and optical disc device

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

Optical disc and optical disc device

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

Optical disc and optical disc device

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

Optical disc and optical disc device

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

Optical information recording medium and optical information recording medium laminate

There is provided an optical information recording medium including a plurality of laminated resin layers, and an inorganic layer that is formed in an interface between the resin layers. Storage elastic moduli are different when the interface is assumed to be a boundary. An information signal is recorded in the interface.

OPTICAL STORAGE MEDIUM, INFORMATION RECORDING APPARATUS, AND INFORMATION RECORDING METHOD

According to one embodiment, an optical storage medium includes a guide layer, a recording layer group, and a guide layer-side intermediate layer. The recording layer group comprises a plurality of recording layers and a plurality of intermediate layers arranged between the plurality of recording layers. The guide layer-side intermediate layer is arranged between the guide layer and a first recording layer closest to the guide layer out of the plurality of recording layers. A thickness T1 of the guide layer-side intermediate layer does not match a sum S1 of thicknesses of arbitrary continuous intermediate layers comprised in the recording layer group. 1. An optical storage medium comprising:a guide layer;a recording layer group comprising a plurality of recording layers and a plurality of intermediate layers, wherein each of the plurality of recording layers is alternately arranged with each of the plurality of recording layers; anda guide layer-side intermediate layer between the guide layer and a first recording layer of the plurality of recording layers, wherein the first recording layer is closest to the guide layer,wherein a thickness T1 of the guide layer-side intermediate layer does not equal a sum S1 of thicknesses of any number of continuously adjacent intermediate layers comprised in the recording layer group.2. The medium of claim 1 , wherein the sum S1 comprises a sum of thicknesses of one or a plurality of recording layers comprised between the continuously adjacent intermediate layers.3. The medium of claim 1 , wherein a sum S2 of the thickness T1 of the guide layer-side intermediate layer and a thickness T2 of one of a plurality of intermediate layers between the first recording layer and a second recording layer comprised in the recording layer group does not equal the sum S1.4. The medium of claim 3 , wherein if a plurality of intermediate layers are comprised between the first recording layer and the second recording layer claim 3 , the sum S2 ...

Health Diagnostic Compact Disc

A modified health diagnostic compact disc (HDCD) comprising (a) a protective layer; (b) a reflective layer; (c) a dye layer (d) a polycarbonate layer; and (e) a micro fluidic layer. In a certain aspect, the polycarbonate layer of the HDCD contains a data layer. The micro fluidic layer of the HDCD is composed of polydimethylsiloxane (PDMS). The micro fluidic layer of the HDCD contains one or more donut-shaped trenches. The micro fluidic layer of the HDCD is associated with conjugated microparticles in solution. The HDCD further comprises integrated microneedles. The modified health diagnostic compact disc can be used by methods of the invention to identify and/or measure the presence of biologic cells utilizing a standard computer compact disk drive. 1. A health diagnostic compact disc (HDCD) comprising:(a) a protective layer;(b) a reflective layer;(c) a dye layer(d) a polycarbonate layer; and(e) a microfluidic layer.2. The HDCD of claim 1 , wherein the polycarbonate layer contains a data layer.3. The HDCD of claim 1 , wherein the microfluidic layer is composed of polydimethylsiloxane (PDMS).4. The HDCD of claim 1 , wherein the microfluidic layer contains one or more donut-shaped trenches.5. The HDCD of claim 4 , further comprising the microfluidic layer associated with conjugated microparticles in solution.6. The HDCD of claim 1 , further comprising integrated microneedles.7. A method for detecting the presence of biomolecules or cells comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(a) loading the microfluidic layer of the HDCD of with conjugated microparticles in solution;'}(b) incubating the HDCD to allow for microparticles to immobilize to the polycarbonate layer;(c) using a standard compact disc (CD) drive to establish a baseline reading;(d) loading a biomolecule or cell solution to the into the microfluidic layer of the HDCD;(e) incubating the HDCD to allow for interaction of the biomolecule or cell solution with the immobilized microparticles;(f ...

Recording control device and method

There is provided a recording control device including a recording control section which controls data recording to a recording medium by irradiating laser light to the recording medium, and a division section which divides the sequential recording range of a prescribed recording layer, near a boundary of two mutually adjacent sequential recording ranges of the recording layer on a back side of the prescribed recording layer when viewed from a laser incident surface of the recording medium, in a case where data is not recorded to an area of one of the two sequential recording ranges, by setting, as a division position in the prescribed recording layer, a position separated by only a prescribed distance, from a position identical to a position of the boundary, on the other side of the two sequential recording ranges in a direction connecting a center and outer peripheral of the recording medium.

OPTICAL RECORDING MEDIUM

An optical recording medium includes a plurality of information signal layers on which information signals are to be optically recorded. Among the plurality of information signal layers, the information signal layer closest to the light-receiving surface has a reflectance of more than 4%. 1. An optical recording medium comprising a plurality of information signal layers , wherein among the plurality of information signal layers , an information signal layer closest to a light-receiving surface has a reflectance of more than 4%.2. The optical recording medium according to claim 1 , wherein among the plurality of information signal layers claim 1 , there is a reflectance difference of at least 1% between an information signal layer with a highest reflectance and another information signal layer with a lowest reflectance.3. The optical recording medium according to claim 1 , wherein the reflectance is in the range of 4.4% to 8%.4. The optical recording medium according to claim 1 , which shows a rate of track cross signal displacement of less than 0.16.5. The optical recording medium according to claim 1 , which shows a rate of track cross signal displacement of at most 0.15.6. The optical recording medium according to claim 1 , wherein the plurality of information signal layers each comprise a first dielectric layer claim 1 , a recording layer claim 1 , and a second dielectric layer.7. The optical recording medium according to claim 6 , wherein the first and second dielectric layers have substantially a same thickness.8. The optical recording medium according to claim 6 , wherein the recording layer comprises a complex oxide containing a first metal and a second metal claim 6 , wherein the first metal is at least one selected from the group consisting of W claim 6 , Zn claim 6 , Mg claim 6 , Zr claim 6 , Si claim 6 , In claim 6 , Sn claim 6 , Sb claim 6 , and Te claim 6 , and the second metal is at least one selected from the group consisting of Mn claim 6 , Pd claim ...

Optical Disc Device and Focus Jump Method

The optical disc device includes an optical pickup, a focus-error-signal generation section for generating a focus error signal of the differential astigmatic method by using a parameter and an electric signal outputted from a photodetector in the optical pickup, a control section for controlling the optical pickup to make a focus jump operation, and a parameter value changing section for temporarily changing a value of the parameter to be used to generate a focus error signal of the differential astigmatic method by the focus-error-signal generation section when the focus jump operation is performed by using the focus error signal of the differential astigmatic method. 1. An optical disc device compatible with multilayer optical discs having a plurality of recording layers on one side , comprising;an optical pickup for applying light to an optical disc to detect return light from the optical disc by a photodetector;a focus-error-signal generation section for generating a focus error signal of a differential astigmatic method by using a parameter and an electric signal outputted from the photodetector;a control section for controlling the optical pickup to make a focus jump operation such that a focus position of the light is moved from a first recording layer to a second recording layer of the optical disc; anda parameter value changing section for temporarily changing a value of the parameter to be used to generate the focus error signal of the differential astigmatic method by the focus-error-signal generation section when the focus jump operation is performed by using the focus error signal of the differential astigmatic method.2. The optical claim 1 , disc device as claimed in claim 1 , whereinthe parameter value changing section temporarily changes a value of a multiplication coefficient by which a sub-beam component of the return light detected by the photodetector is multiplied.3. The optical disc device as. claimed in claim 2 , whereinthe parameter value ...

METAL ALLOYS FOR THE REFLECTIVE OR THE SEMI-REFLECTIVE LAYER OF AN OPTICAL STORAGE MEDIUM

A silver-based magnesium alloy thin film is provided for the semi-reflective coating layer of optical discs. This alloy has moderate to high reflectivity and reasonable corrosion resistance in the ambient environment. 1. An optical storage medium , comprising:a first layer having a pattern of pits and lands in at least one major surface;a reflective layer conforming to the pits and lands of the first layer;a second layer having a pattern of pits and lands in at least one major surface; anda semi-reflective layer, including a metal alloy comprising silver and zinc conforming to the pits and lands of the second layer;wherein the amount of zinc that is present ranges from about 0.01 a/o percent to about 15.0 a/o percent.2. Apparatus for making an optical storage medium , the apparatus comprising:a first layer having a pattern of pits and lands in at least one major surface;means for sputtering a reflective layer onto the pits and lands of the first layer;a second layer having a pattern of pits and lands in at least one major surface;a target comprising a metal alloy; andmeans for sputtering a semi-reflective layer from the target onto the pits and lands of the second layer;wherein the metal alloy comprises silver and zinc; andwherein the amount of zinc that is present ranges from about 0.01 a/o percent to about 15.0 a/o percent. This application is a continuation of U.S. patent application Ser. No. 13/506,548, filed Apr. 27, 2012, now U.S. Pat. No. 8,632,869, which is a continuation of U.S. patent application Ser. No. 12/460,831, filed Jul. 24, 2009, which is a continuation of U.S. patent application Ser. No. 11/390,776, filed Mar. 28, 2006, now U.S. Pat. No. 7,645,500, which is a continuation of U.S. patent application Ser. No. 10/825,779, filed Apr. 16, 2004, now U.S. Pat. No. 7,018,696, which claims the benefit of U.S. Provisional Application No. 60/463,837 filed Apr. 18, 2003. These applications are incorporated herein by reference in their entirety.This invention ...

OPTICAL INFORMATION RECORDING MEDIUM

An optical information recording medium includes a substrate that has a recessed portion on a surface thereof, a recording layer, and a reflective layer. By combination of ranges of an optical density of the recording layer and a depth of the recessed portion of the substrate, degradation of reflectance is suppressed. 18-. (canceled)9. An optical information recording medium comprising:a substrate that has a recessed portion on a surface thereof;a recording layer that includes an organic dye; anda reflection layer that includes aluminum as a main component thereof,wherein degradation of reflectance is suppressed by combination of ranges of an optical density of the recording layer and a depth of the recessed portion of the substrate.10. The optical information recording medium according to claim 9 , wherein the range of the optical density of the recording layer is a range larger than 0.560 and less than or equal to 0.700 claim 9 , andthe range of the depth of the recessed portion of the substrate is a range of 198 nm to 220 nm.11. The optical information recording medium according to claim 10 , wherein recording or reproduction of information signals is performed by condensing light having a wavelength in a range of 770 nm to 790 nm using an objective lens having a numerical aperture in a range of 0.44 to 0.46 and irradiating the recording layer with the condensed light from the surface of the substrate side.12. The optical information recording medium according to claim 9 , wherein the reflectance is maintained in a range of 0.6 or larger.13. The optical information recording medium according to claim 9 , wherein claim 9 , by the combination of the ranges of the optical density of the recording layer and the depth of the recessed portion of the substrate claim 9 , a push-pull signal is improved.14. The optical information recording medium according to claim 13 , wherein the push-pull signal is within a range of 0.08 to 0.13.15. The optical information recording ...

Recording layer for optical data recording medium, optical data recording medium, and sputtering target

A recording layer for an optical data recording medium according to one embodiment of the present invention makes it possible to record an information signal by irradiation with laser beam. The recording layer for an optical data recording medium comprises metal oxides including a Mn oxide, a W oxide, and a Sn oxide. The atomic ratio of Mn with respect to the total number of atoms of metal elements constituting the metal oxides is 3-40 atm %.

OPTICAL RECORDING MEDIUM

An optical recording medium includes a reflective layer, a first dielectric layer, a phase-change recording layer, and a second dielectric layer. The phase-change recording layer has an average composition represented by SbxInyMz, in which M is at least one of Mo, Ge, Mn, and Al, and x, y, and z are values in the ranges 0.70≦x≦0.92, 0.05≦y≦0.20, and 0.03≦z≦0.10, respectively, provided that x+y+z=1, the first dielectric layer includes a zirconium oxide-containing composite material or tantalum oxide, and the second dielectric layer includes a chromium oxide-containing composite material or silicon nitride. 1. An optical recording medium comprisinga reflective layer, a first dielectric layer, a phase-change recording layer, and a second dielectric layer, whereinthe phase-change recording layer has an average composition represented by formula (1): SbxInyMz,in which M is at least one of Mo, Ge, Mn, and Al, and x, y, and z are values in the ranges 0.70≦x≦0.92, 0.05≦y≦0.20, and 0.03≦z≦0.10, respectively, provided that x+y+z=1,the first dielectric layer comprises a zirconium oxide-containing composite material or tantalum oxide, andthe second dielectric layer comprises a chromium oxide-containing composite material or silicon nitride.2. The optical recording medium according to claim 1 , wherein the first dielectric layer comprises a composite oxide comprising zirconium oxide and at least one of indium oxide and silicon oxide.3. The optical recording medium according to claim 1 , wherein the first dielectric layer comprises a composite oxide comprising zirconium oxide and indium oxide and has a zirconium oxide content of 20 mol % to 50 mol % and an indium oxide content of 10 mol % to 50 mol %.4. The optical recording medium according to claim 1 , wherein the second dielectric layer comprises a composite oxide comprising at least two of chromium oxide claim 1 , zirconium oxide claim 1 , and silicon oxide.5. The optical recording medium according to claim 1 , wherein the ...

OPTICAL INFORMATION STORAGE MEDIUM

An optical information storage medium includes a substrate and a multilayer polymeric film. The multilayer polymeric film has a first surface and an opposite second surface that extend the length of the multilayer polymeric film. The second surface is adhered to a surface of the substrate. The multilayer polymeric film includes a plurality of coextruded alternating polymeric active data storage layers and polymeric buffer layers. 1. An optical information storage medium comprising a substrate and a multilayer polymeric film , the multilayer polymeric film having a first surface and an opposite second surface that extend the length of the multilayer polymeric film , the second surface being adhered to a surface of the substrate , the multilayer polymeric film including a plurality of coextruded alternating polymeric active data storage layers and polymeric buffer layers , the active data storage layers configured to undergo a permanent induced localized nonlinear or threshold change of optical properties when written by a one photon or multi-photon optical writing process , the buffer layers separating the active data storage layers with sufficient thicknesses to axially confine at least one data voxel written by the optical writing process into a single discrete active data storage layer that is readable by an optical reading device , wherein the buffer layers have an average thickness of 3 μm to about 100 μm.2. The medium of claim 1 , wherein the substrate is rigid or semi-rigid.3. The medium of claim 1 , wherein the surface of the substrate includes a guide track for optical guidance of an optical writing device and/or optical reading device during the optical writing process and/or optical reading process.4. The medium of claim 1 , further comprising a cover layer provided on the first surface of the multilayer polymeric film claim 1 , the cover layer defining an outer surface of the medium.5. The medium of claim 5 , wherein the cover layer protects the first ...

OPTICAL INFORMATION RECORDING MEDIUM

An optical information recording medium has a first information recording layer () and a second information recording layer () each of which includes (i) a group of pre-pits () constituting marks () and spaces () and (ii) a super-resolution film (), the marks () and the spaces () having different lengths, an average length of a smallest mark that is smallest in length and a smallest space that is smallest in length being less than or equal to a resolution limit of a reproduction optical system for reproducing information recorded on the first information recording layer () and the second information recording layer (), the group of pre-pits () being formed so that a push-pull signal for the reproduction optical system to reproduce the information recorded by the group of pre-pits is negative in polarity. This provides an inexpensive and high-capacity multilayer optical information recording medium based on a super-resolution technology. 1. (canceled)2. An optical information recording medium reproducing device for reproducing an optical information recording medium ,the optical information recording medium including:a light transmittable layer having an incident surface on which reproduction light is incident;two or more information recording layers;a substrate, the light transmittable layer, the information recording layers, and the substrate being stacked in this order from an incident side on which the reproduction light is incident; andan intermediate layer that separates the information recording layers from each other,the two or more information recording layers having information recorded thereon as marks and spaces by a predetermined modulation method,the two or more information recording layers each including (i) a group of pre-pits constituting the marks and the spaces and (ii) a super-resolution film,the marks and the spaces constituted by the group of pre-pits having different lengths,an average length of a smallest mark that is smallest in length among ...

Systems and methods for atomic film data storage

The present disclosure provides systems and methods associated with data storage using atomic films, such as graphene, boron nitride, or silicene. A platter assembly may include at least one platter that has one or more substantially planar surfaces. One or more layers of a monolayer atomic film, such as graphene, may be positioned on a planar surface. Data may be stored on the atomic film using one or more vacancies, dopants, defects, and/or functionalized groups (presence or lack thereof) to represent one of a plurality of states in a multi-state data representation model, such as a binary, a ternary, or another base N data storage model. A read module may detect the vacancies, dopants, and/or functionalized groups (or a topographical feature resulting therefrom) to read the data stored on the atomic film.

SYSTEMS AND METHODS FOR ATOMIC FILM DATA STORAGE

The present disclosure provides systems and methods associated with data storage using atomic films, such as graphene, boron nitride, or silicene. A platter assembly may include at least one platter that has one or more substantially planar surfaces. One or more layers of a monolayer atomic film, such as graphene, may be positioned on a planar surface. Data may be stored on the atomic film using one or more vacancies, dopants, defects, and/or functionalized groups (presence or lack thereof) to represent one of a plurality of states in a multi-state data representation model, such as a binary, a ternary, or another base N data storage model. A read module may detect the vacancies, dopants, and/or functionalized groups (or a topographical feature resulting therefrom) to read the data stored on the atomic film. 1. A data storage device , comprising:a platter assembly comprising at least one platter that has at least one substantially planar surface;a graphene film positioned on at least a portion of a substantially planar surface of a platter of the platter assembly, wherein the graphene film comprises a lattice structure; wherein each vacancy region comprises at least one atom missing from the lattice structure of the graphene film,', 'wherein each vacancy region comprises one or more vacancies in the lattice structure of the graphene film,', 'wherein each of the plurality of vacancy regions are configured to represent one of at least two possible states, and', 'wherein the graphene file is configured to store readable data in the at least two possible states using the vacancy regions in the lattice structure of the graphene film;, 'a plurality of vacancy regions formed in the lattice structure of the graphene film,'}at least one read module configured to read the readable data on the substantially planar surface of the platter by detecting each of the at least two states, at least one of which states is represented by the vacancy regions; anda movement assembly ...

RECORDING MATERIAL AND OPTICAL INFORMATION RECORDING MEDIUM

A recording material includes a dye-bonded polymer compound which contains a polymer compound to which a one-photon absorption dye is bonded, and a glass transition temperature of the recording material is higher than 200° C. An optical information recording medium includes a recording layer and an intermediate layer adjacent to the recording layer, and the recording layer contains the above-described recording material. 1. A recording material comprising a dye-bonded polymer compound which contains a polymer compound to which a one-photon absorption dye is bonded ,wherein a glass transition temperature of the recording material is higher than 200° C.2. The recording material according to claim 1 , wherein a main chain of the polymer compound is selected from the group consisting of polyacenaphthylene claim 1 , poly(N-vinylcarbazole) claim 1 , poly(N-vinylphthalimide) claim 1 , polyindene claim 1 , and poly(N-trichlorophenyl maleimide).3. The recording material according to claim 1 , wherein the one-photon absorption dye is selected from the group consisting of 1-aminobutadiene derivatives claim 1 , benzotriazole derivatives and acridone derivatives.4. The recording material according to claim 2 , wherein the one-photon absorption dye is selected from the group consisting of 1-aminobutadiene derivatives claim 2 , benzotriazole derivatives and acridone derivatives.5. The recording material according to claim 1 , wherein the dye-bonded polymer compound has absorption maximum at a wavelength in the range from 300 nm to 400 nm and does not have absorption of light in a visible spectrum range of wavelengths equal to or greater than 450 nm.6. The recording material according to claim 2 , wherein the dye-bonded polymer compound has absorption maximum at a wavelength in the range from 300 nm to 400 nm and does not have absorption of light in a visible spectrum range of wavelengths equal to or greater than 450 nm.7. The recording material according to claim 3 , wherein the ...

RECORDING MEDIUM, EXTERIOR MEMBER, AND METHOD OF RECORDING ON RECORDING MEDIUM

A recording medium according to one embodiment of the present disclosure includes a recording layer and an optical thin film. The recording layer includes a heat-sensitive color-developing composition and a photothermal conversion material. The photothermal conversion material absorbs a wavelength in an infrared region and generates heat. The optical thin film is provided on one surface of the recording layer. The optical thin film reflects the wavelength in the infrared region and transmits a wavelength in a visible region. 1. A recording medium comprising:a recording layer that includes a heat-sensitive color-developing composition and a photothermal conversion material, the photothermal conversion material absorbing a wavelength in an infrared region and generating heat; andan optical thin film that is provided on one surface of the recording layer, the optical thin film reflecting the wavelength in the infrared region and transmitting a wavelength in a visible region.2. The recording medium according to claim 1 , further comprising a diffuse reflection layer on side of the one surface of the recording layer with the optical thin film in between claim 1 , the diffuse reflection layer reflecting and diffusing the wavelength in the visible region.3. The recording medium according to claim 1 , wherein the optical thin film includes two kinds of inorganic films that are alternately laminated claim 1 , the two kinds of inorganic films having respective refractive indices different from each other in a wavelength range from the infrared region to the visible region.4. The recording medium according to claim 1 , wherein the recording layer includes a coloring compound and a developing/reducing agent as the heat-sensitive color-developing composition.5. The recording medium according to claim 1 , wherein the recording layer includes two or more layers that are laminated.6. The recording medium according to claim 5 , wherein the two or more layers allow respective colors ...

Information recording medium, information device, and method for producing information recording medium

An information device is an information device that records information on or reproduces information from an information recording medium ( 3 ). The information device includes a light source ( 14 ) and a near-field light generating element ( 9 ) including a resonating section ( 22 ) configured such that plasmon resonance occurs between the resonating section ( 22 ) and a recording region ( 4 ). The resonating section ( 22 ) causes the plasmon resonance when emission light from the light source is irradiated on the near-field light generating element ( 9 ). A resonance enhancing film enhances the plasmon resonance between the resonating section ( 22 ) and the recording region ( 4 ). The resonating section ( 22 ) generates near-field light and irradiates the near-field light on the recording region ( 4 ) from a recording layer side.

Multi-layer optical recording medium and optical recording device

A multi-layer recording medium is constituted by guide layer-equipped optical disks having a plurality of recording layers and guide layers are integrated by bonding said disks to one another so as to produce a double-sided disk, both sides of which may be used for recording. With regards to the lead-in areas for the guide layers of the guide layer-equipped optical disks for both sides, single-sided disks and double-sided disks are identified, and face-management information for identifying the side surfaces in the case of a double-sided disk is recorded in advance in said lead-in areas using wobbles or the like. As a result, the likelihood of the occurrence of defective products caused by the inability to read the face information can be reduced.

Optical assembly and method of producing optical assembly

An optical assembly includes a spacer layer which is translucent or transparent; an image forming reflector which has a reflective layer being formed at least in a first region of the spacer layer; and a protective layer which is laminated over the spacer layer and the image forming reflector and the protective layer being translucent or transparent. The spacer layer is made of a polyolefin or/and a polymer containing an aryl group. The image forming reflector includes a visible image which is authenticatable. The image forming reflector has an individual information record in which a code is stored in the form of a plurality of removed linear segments. The image forming reflector has white level regions and a black level region in planar view. Each of the white level regions has the removed linear segments formed therein. The black level region is interposed between the white level regions.

OPTICAL RECORDING MEDIUM, METHOD FOR PRODUCING SAME AND RECORDING LAYER FOR OPTICAL RECORDING MEDIA

Provided is an optical recording medium including two or more recording layers, and a light irradiation surface that is irradiated with light for recording an information signal on the two or more recording layers. Among the two or more recording layers, at least one layer other than a layer located on the deepest side from the light irradiation surface includes an oxide of a metal A, an oxide of a metal B, and an oxide of a metal C. The metal A is at least one kind among W, Mo, and Zr, the metal B is Mn, and the metal C is at least one kind among Cu, Ag, and Ni. Ratios of the metal A, the metal B, and the metal C satisfy a relationship of 0.46≤x1 (provided that, x1=a/(b+0.8c), a representing an atomic ratio [atom %] of the metal A with respect to the sum of the metal A, the metal B, and the metal C, b representing an atomic ratio [atom %] of the metal B with respect to the sum of the metal A, the metal B, and the metal C, and c representing an atomic ratio [atom %] of the metal C with respect to the sum of the metal A, the metal B, and the metal C. 1. An optical recording medium , comprising:two or more recording layers; anda light irradiation surface that is irradiated with light for recording an information signal on the two or more recording layers,wherein among the two or more recording layers, at least one layer other than a layer located on a deepest side from the light irradiation surface includes an oxide of a metal A, an oxide of a metal B, and an oxide of a metal C,the metal A is at least one kind among W, Mo, and Zr, the metal B is Mn, and the metal C is at least one kind among Cu, Ag, and Ni, andratios of the metal A, the metal B, and the metal C satisfy a relationship of 0.46≤x1 (provided that, x1=a/(b+0.8c), a representing an atomic ratio [atom %] of the metal A with respect to a sum of the metal A, the metal B, and the metal C, b representing an atomic ratio [atom %] of the metal B with respect to the sum of the metal A, the metal B, and the metal C, ...

RECORDING LAYER, INFORMATION RECORDING MEDIUM, AND TARGET

The present invention relates to an information recording medium that has good enough recording characteristics even without containing Pd. The information recording medium has a recording layer including an oxide of Mn in which Mn atoms are partially or fully present as Mn with a valence of +4. 1. An information recording medium comprising: a recording layer comprising an oxide of Mn , wherein Mn atoms in the oxide of Mn are partially or fully present as Mn with a valence of +4.2. The information recording medium according to claim 1 , wherein the recording layer further comprises an oxide of a metal other than Mn claim 1 , and the metal is at least one selected from the group consisting of Sn claim 1 , Zn claim 1 , Bi claim 1 , Ge claim 1 , Co claim 1 , W claim 1 , Cu claim 1 , and Al.3. The information recording medium according to claim 1 , wherein the recording layer comprises a first recording layer and a second recording layer claim 1 , and the first and second recording layers have different material compositions.4. The information recording medium according to further comprising a dielectric layer provided on at least one surface of the recording layer.5. The information recording medium according to claim 4 , wherein the dielectric layer comprises at least one selected from the group consisting of an oxide claim 4 , a nitride claim 4 , a sulfide claim 4 , a carbide claim 4 , and a fluoride.6. The information recording medium according to claim 1 , wherein the recording layer comprises MnOas a main component.7. The information recording medium according to claim 1 , wherein the recording layer comprises claim 1 , as main components claim 1 , MnOand an oxide of at least one metal element selected from the group consisting of Sn claim 1 , Zn claim 1 , Bi claim 1 , Ge claim 1 , Co claim 1 , W claim 1 , Cu claim 1 , and Al.8. The information recording medium according to claim 1 , wherein the recording layer further comprises an oxide of Mg.9. The information ...

INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING SAME

An information recording medium and a method for producing the same according to the present disclosure are configured to have an information layer in which a larger amount of light for reproduction can be obtained, so that the medium is suitable for recording information at high recording density and is useful for a multi-layer optical disc that records a large amount of contents. 1. An information recording medium comprising two or more information layers ,wherein the information recording medium records or reproduces information by irradiation with a laser beam,wherein at least one of the two or more information layers is determined as a first information layer and the first information layer includes a first dielectric film and a recording film in this order from a farther end toward a nearer end of a laser beam-irradiated surface,{'b': '1', 'wherein the first dielectric film contains at least Zr and oxygen and further contains at least one element D selected from Zn and Sn,'}{'b': 1', '1, 'wherein when the total number of atoms of Zr, oxygen and the element D is defined as 100 atom %, the first dielectric film contains Zr in an amount of 3 atom % or more and 26 atom % or less and contains the element D in an amount of 10 atom % or more and 43 atom % or less, and'}wherein the recording film contains at least W, Cu, Mn, and oxygen and further contains at least one element M selected from Zn, Nb, Mo, Ta, and Ti.22. The information recording medium according to claim 1 , wherein the first dielectric film further contains at least one element D selected from Si claim 1 , Y claim 1 , Ca claim 1 , and Mg.331233. The information recording medium according to claim 1 , wherein the first dielectric film further contains at least one element D selected from Ga and Al claim 1 , and when the total number of atoms of Zr claim 1 , oxygen claim 1 , the element D claim 1 , the element D claim 1 , and the element D is defined as 100 atom % claim 1 , the first dielectric film ...

OPTICAL DISC HAVING A PLURALITY OF RECORDING LAYERS

A reading method for reading contents information with a laser from an optical disc including a plurality of recording layers includes positioning a focus position of the laser at a first recording layer and reading a first part of the contents information recorded in the first recording layer. If a first link information recorded in the first recording layer is detected, judging whether a first condition is fulfilled or not. If the first condition is fulfilled, positioning the focus position of the laser at a second recording layer and reading a first link destination information recorded in the second recording layer. If the first condition is not fulfilled, reading a second part of the contents information recorded in the first recording layer. 1. A reading method for reading contents information with a laser from an optical disc including a plurality of recording layers comprising:positioning a focus position of the laser at a first recording layer and reading a first part of the contents information recorded in the first recording layer;if a first link information recorded in the first recording layer is detected, judging whether a first condition is fulfilled or not;if the first condition is fulfilled, positioning the focus position of the laser at a second recording layer and reading a first link destination information recorded in the second recording layer; andif the first condition is not fulfilled, reading a second part of the contents information recorded in the first recording layer.2. The reading method for reading contents information according to claim 1 , whereinthe focus position of the laser moves in a radial direction of the optical disc while the first part of the contents information is being read, andthe focus position of the laser does not move substantially in the radial direction while the focus position of the laser is moving from the first recording layer to the second recording layer.3. The reading method for reading contents information ...

OPTICAL RECORDING MEDIUM

An optical recording medium includes a plurality of information signal layers on which information signals are to be optically recorded. Among the plurality of information signal layers, the information signal layer closest to the light-receiving surface has a reflectance of more than 4%. 1. An optical recording medium , comprising:a light-receiving surface configured to receive incident light; andat least three information signal layers,wherein a first information signal layer of the at least three information signal layers is closest to the light-receiving surface and has a reflectance in a range of 4% to 11%, andwherein a reflectance difference between the first information signal layer and a third information signal layer of the at least three information signal layers is at least 1%.2. The optical recording medium according to claim 1 , wherein the reflectance difference is at least 2%.3. (canceled)4. The optical recording medium according to claim 1 , wherein a rate of track cross signal displacement is less than 0.16.5. The optical recording medium according to claim 1 , wherein a rate of track cross signal displacement is at most 0.15.6. The optical recording medium according to claim 1 , wherein each of the at least three information signal layers comprises a first dielectric layer claim 1 , a recording layer claim 1 , and a second dielectric layer.7. The optical recording medium according to claim 6 , wherein a first thickness of the first dielectric layer is same as a second thickness of the second dielectric layer.8. The optical recording medium according to claim 6 , wherein the recording layer comprises a complex oxide of a first metal and a second metalthe first metal is at least one selected from the group consisting of W, Zn, Mg, Zr, Si, In, Sn, Sb, and Te, andthe second metal is at least one selected from the group consisting of Mn, Pd, Fe, Ni, Cu, Ag, and Ru.9. The optical recording medium according to claim 1 ,wherein each of the at least three ...

RECORDING APPARATUS, RECORDING METHOD, AND PATTERN FORMING MEDIUM

A recording apparatus includes a rotation driving unit configured to rotate a recording layer forming medium in which a recording layer is formed, a laser irradiation unit configured to apply laser light to the recording layer of the recording layer forming medium, a first slide mechanism configured to change a position of an irradiation spot of the laser light on the recording layer in a first direction parallel to an in-plane direction of the recording layer, and a recording unit configured to perform a recording operation in which the position of the irradiation spot is changed in the first direction by the first slide mechanism while applying the laser light to the recording layer by the laser irradiation unit and rotating the recording layer forming medium by the rotation driving unit, thereby recording a predetermined pattern in consecutive areas including a central portion of the recording layer. 1. A recording apparatus , comprising:a rotation driving unit configured to rotate a recording layer forming medium in which a recording layer is formed;a laser irradiation unit configured to apply laser light to the recording layer of the recording layer forming medium;a first slide mechanism configured to change a position of an irradiation spot of the laser light on the recording layer in a first direction parallel to an in-plane direction of the recording layer; anda recording unit configured to perform a recording operation in which the position of the irradiation spot is changed in the first direction by the first slide mechanism while applying the laser light to the recording layer by the laser irradiation unit and rotating the recording layer forming medium by the rotation driving unit, thereby recording a predetermined pattern in consecutive areas including a central portion of the recording layer.2. The recording apparatus according to claim 1 , further comprisinga second slide mechanism configured to change the position of the irradiation spot in a second ...

Optical disc and method for manufacturing same

Conventionally, in making a double-sided optical disc by attaching recording substrates to each other via an ultraviolet curable adhesive layer, there was a problem that the ultraviolet curable adhesive layer was slow to cure. It is thought that this is because the out gases leached from the recording substrate disturbed the cure reaction of the adhesive layer. In contrast, in the optical disc of the present disclosure, it is possible to cure the adhesive layer in a short time in attaching the recording substrates to each other via the ultraviolet curable adhesive layer, by providing a gas barrier layer at an attachment surface of a substrate to inhibit out gases from leaching from the substrate to the ultraviolet curable adhesive layer.

OPTICAL INFORMATION STORAGE MEDIUM

An optical information storage medium includes a substrate and a multilayer polymeric film. The multilayer polymeric film has a first surface and an opposite second surface that extend the length of the multilayer polymeric film. The second surface is adhered to a surface of the substrate. The multilayer polymeric film includes a plurality of coextruded alternating polymeric active data storage layers and polymeric buffer layers. 1. An optical information storage medium comprising a substrate and a multilayer polymeric film , the multilayer polymeric film having a first surface and an opposite second surface that extend the length of the multilayer polymeric film , the second surface being adhered to a surface of the substrate , the multilayer polymeric film including a plurality of coextruded alternating polymeric active data storage layers and polymeric buffer layers , the active data storage layers configured to undergo a permanent induced localized nonlinear or threshold change of optical properties when written by a one photon or multi-photon optical writing process , the buffer layers separating the active data storage layers with sufficient thicknesses to axially confine at least one data voxel written by the optical writing process into a single discrete active data storage layer that is readable by an optical reading device , wherein the buffer layers have an average thickness of 3 μm to about 100 μm.2. The medium of claim 1 , wherein the substrate is rigid or semi-rigid.3. The medium of claim 1 , wherein the surface of the substrate includes a guide track for optical guidance of an optical writing device and/or optical reading device during the optical writing process and/or optical reading process.4. The medium of claim 1 , further comprising a cover layer provided on the first surface of the multilayer polymeric film claim 1 , the cover layer defining an outer surface of the medium.5. The medium of claim 5 , wherein the cover layer protects the first ...

OPTICAL DATA STORAGE MEDIUM AND USE OF SUCH MEDIUM

A multi-stack optical data storage medium for recording and reading using a focused radiation beam entering through an entrance face of the medium has a first substrate with a first guide groove having a depth G<80 nm and a full half maximum width W<350 nm, where a first recording stack is formed over the first substrate and includes a recordable type recording layer formed in the first guide groove. A first reflective layer is present between the first recording layer and the first substrate. A second recording stack has a recordable type recording layer formed a second guide groove of a second substrate, where the second recording stack is present at a position closer to the entrance face than the first recording stack. A transparent spacer layer is sandwiched between the first and second recording stacks. The first Lguide groove has a depth G<100 nm. 1. A multi-stack optical data storage medium with two recording stacks separated by a transparent spacer layer for recording and reading using a focused radiation beam entering through an entrance face of the medium during recording and reading , comprising:a first substrate located on a side farthest from the entrance face, the first substrate having a first guide groove formed on a substrate surface facing the entrance face;a second substrate located on a side nearest to the entrance face, the second substrate having a second guide groove formed on a substrate surface facing away from the entrance face;a first reflective layer located on the first guide groove;a first recording layer formed on the first reflective layer;a dielectric layer located over the first recording layer;the transparent spacer layer located over the dielectric layer;a second reflective layer located on the second guide groove;a second recording layer formed in the second guide groove and located on the second reflective layer,wherein the transparent spacer layer separating the two recording stacks including the first and second recording ...

Optical information recording medium

An optical information recording medium is provided which comprises a laminate of unit structure sheets, each including an adhesive layer configured as an intermediate layer and at least one recording layer. The unit structure sheets are each made with the recording layer and the adhesive layer formed by applying materials in one specific application direction, and the unit structure sheets in one optical information recording medium are classifiable into pairs such that application directions therefor in each pair are shifted 180 degrees from each other.

OPTICAL INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING SAME

The object of the invention is to provide an optical information recording medium which excels in stability e.g., for preserving the properties during a long-term storage and which enables recording using a laser having a small peak power, and a method for manufacturing such an optical information recording medium. An optical information recording medium includes a recording layer , and intermediate layers (adhesive agent layer A and recording layer support layer B) adjacent to the recording layer , and the recording layer includes a recording material comprising a one-photon absorption dye bound to a polymer binder (polymer compound). 1. An optical information recording medium comprising:at least one recording layer; andat least one intermediate layer adjacent to the recording layer,wherein the recording layer includes a recording material comprising a one-photon absorption dye bound to a polymer compound.2. The optical information recording medium according to claim 1 , further comprising a plurality of recording layers claim 1 ,wherein the intermediate layer is provided between two adjacent recording layers.3. The optical information recording medium according to claim 2 , wherein each recording layer has a first interface and a second interface between the recording layer and two intermediate layers sandwiching the recording layer claim 2 , andwherein after a recording layer is irradiated with a recording beam, the recording layer has a recording mark which consists of a protrusion sticking out into the intermediate layer and which is formed in at least one of the first interface and the second interface.4. The optical information recording medium according to claim 3 , wherein content in mass percentage of the one-photon absorption dye in the recording material is less than 50%.5. The optical information recording medium according to claim 3 , wherein a thickness of the recording layer is equal to or greater than 50 nm.6. The optical information recording ...

Optical disc and optical disc device

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

OPTICAL RECORDING MEDIUM AND MANUFACTURING METHOD OF THE SAME

Provided is an optical recording medium including: two discs, each of which includes a substrate and a plurality of recording layers; and an attachment layer which is provided between the two discs and includes ultraviolet curable resin, wherein thickness of each of the substrates in the two discs is equal to or greater than 0.3 mm and equal to or less than 0.545 mm, wherein transmittance of the two discs is equal to or less than 20%, and wherein inversion rates on both surface sides of the attachment layer are equal or substantially equal to each other, and are equal to or greater than 70%. 1. An optical recording medium comprising:two discs, each of which includes a substrate and a plurality of recording layers; andan attachment layer which is provided between the two discs and includes ultraviolet curable resin,wherein thickness of each of the substrates in the two discs is equal to or greater than 0.3 mm and equal to or less than 0.545 mm,wherein transmittance of the two discs is equal to or less than 20%, andwherein inversion rates on both surface sides of the attachment layer are equal or substantially equal to each other, and are equal to or greater than 70%.2. The optical recording medium according to claim 1 ,wherein the thickness of each of the substrates in the two discs is equal to or greater than 0.445 mm and equal to or less than 0.545 mm.3. The optical recording medium according to claim 1 ,wherein a thickness of the attachment layer is equal to or greater than 0.01 mm and equal to or less than 0.22 mm.4. The optical recording medium according to claim 1 ,wherein the transmittance of the two discs is equal to or greater than 5% and equal to or less than 20%.5. The optical recording medium according to claim 1 ,wherein the substrates in the two discs contain plastic resin.6. The optical recording medium according to claim 1 ,wherein the ultraviolet curable resin is radical polymerization-type ultraviolet curable resin.7. The optical recording medium ...

OPTICAL DISC RECORDING MEDIUM SUITABLE FOR USE IN STACKED MANNER

An optical disc recording medium includes: a substrate; at least one recording layer formed on at least one side of the substrate; and a cover layer formed on the substrate and the recording layer. The cover layer having a first thickness with reference to a surface of the substrate, in an inside of a circle having a first radius from a center of the substrate. The cover layer having a second thickness larger than the first thickness with reference to the surface of the substrate, on a circumference having a second radius longer than the first radius from the center of the substrate. The cover layer having a third thickness smaller than the first thickness with reference to the surface of the substrate, on a circumference having a third radius longer than the first radius and shorter than the second radius from the center of the substrate.

OPTICAL DISC AND OPTICAL DISC DEVICE

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method. 1. A manufacturing method for manufacturing an optical disc , containing a first recording layer , having a track upon which a first laser beam is focused , and providing a management area on said first recording layer , said manufacturing method comprising:recording first information representing if a second recording layer upon which a second laser beam is focused is present in said optical disc on said management area and second information representing if a third recording layer upon which a third laser beam is focused is present in said optical disc on said management area;wherein a wavelength of said second laser beam is longer than that of said first laser beam,wherein a wavelength of said third laser beam is longer than that of said second laser beam,wherein said first information and said second information comprise two bits respectively,wherein said first information indicating said second recording layer represents absence of said second recording ...

RECORDING LAYER FOR OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING MEDIUM

An optical recording medium includes a transmissive recording layer containing an oxide of a metal M, an oxide of a metal M, and an oxide of a metal M. The metal Mis at least one kind selected from the group consisting of Mn and Ni. The metal Mis at least one kind selected from the group consisting of W and Mo. The metal Mc is Zr. An atomic ratio (M/M) of the metal Mto the metal Mis not less than 0.37 and not more than 1.31. The metal Mis contained in the transmissive recording layer at not less than 0.9 atomic % and not more than 27.5 atomic %. 1. An optical recording medium comprising a transmissive recording layer containing an oxide of a metal M , an oxide of a metal M , and an oxide of a metal M ,{'sub': 'A', 'wherein the metal Mis at least one kind selected from the group consisting of Mn and Ni,'}{'sub': 'B', 'wherein the metal Mis at least one kind selected from the group consisting of W and Mo,'}wherein the metal Mc is Zr,{'sub': A', 'B', 'A', 'B, 'wherein an atomic ratio (M/M) of the metal Mto the metal Mis not less than 0.37 and not more than 1.31, and'}{'sub': 'C', 'wherein the metal Mis contained in the transmissive recording layer at not less than 0.9 atomic % and not more than 27.5 atomic %.'}2. The optical recording medium according to claim 1 ,{'sub': 'E', 'wherein the transmissive recording layer further contains an oxide of a metal M, and'}{'sub': 'E', 'wherein the metal Mis Mg.'}3. The optical recording medium according to claim 2 ,{'sub': 'E', 'wherein the metal Mis contained in the transmissive recording layer at not less than 6.6 atomic % and not more than 43.0 atomic %.'}4. The optical recording medium according to claim 1 ,wherein the number of the transmissive recording layers is two.5. The optical recording medium according to claim 1 ,{'sub': 'C', 'wherein the metal Mis contained in the transmissive recording layer at not less than 0.9 atomic % and not more than 8.5 atomic %.'}6. The optical recording medium according to claim 5 ,wherein ...

OPTICAL DISC AND OPTICAL DISC DEVICE

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method. 1. An optical disc comprising:a first recording layer, having a track upon which a first laser beam is focused; anda management area provided on said first recording layer, said management area having recorded information representing if a second recording layer upon which a second laser beam is focused is present in said optical disc and other recorded information representing if a third recording layer upon which a third laser beam is focused is present in said optical disc,wherein a wavelength of said second laser beam is longer than that of said first laser beam,wherein a wavelength of said third laser beam is longer than that of said second laser beam,wherein each of said information comprises two bits,wherein said information indicating said second recording layer represents absence of said second recording layer by bit values of 00,wherein said information indicating said third recording layer represents absence of said third recording layer by bit values ...

APPARATUS FOR PRODUCING N-LAYER OPTICAL INFORMATION CARRIERS AND METHOD THEREFOR

A device for manufacturing an n-layered optical information carrier having an injection molding unit for manufacturing a carrier body with a first information layer, and furthermore, a first embossing unit for manufacturing a second information layer. The second information layer has an input via which information carriers can be received in the embossing unit. The embossing unit moreover has an output unit via which the coated information carriers are output. (n−2) additional embossing units are associated with the device, for manufacturing in each case an additional information layer, wherein “n” is greater than two. The respective units are linked to one another so that the n-layered information carrier is manufactured in an inline manufacturing. The (n−2) additional embossing units can be coupled to and uncoupled from the device, wherein the additional embossing units in each case have an input and an output unit. 11. A device () for manufacturing an n-layered optical information carrier , comprising:{'b': 10', '10, 'an injection molding unit (, ′) for manufacturing a carrier body with a first information layer;'}{'b': 20', '20', '27, 'a first embossing unit () for manufacturing a second information layer, which comprises an input via which information carriers can be received in the embossing unit (), wherein the embossing unit moreover comprises an output unit () via which the coated information carriers are output; and'}{'b': 20', '20', '10', '20', '10', '20', '20', '20', '20', '27, '(n−2) additional embossing units (, ′), associated with device, for manufacturing in each case an additional information layer, wherein “n” is greater than two, and the respective units (, ; ′, ′) are linked to one another so that the n-layered information carrier is manufactured in an inline manufacturing, and that the (n−2) additional embossing units () are coupled to and uncoupled from the device, wherein the additional embossing units (, ′) in each case comprise an input and ...

MULTIPLE LAYER OPTICAL DISC, AND DEVICE FOR WRITING SUCH DISC

A method of operating a medium access device includes writing by a writer information in a logical storage space of a storage medium which has a physical storage space comprising two or more layers of physical storage locations, each storage location having a physical address, the logical storage space comprising storage locations within a first layer of the layers and within a subsequent layer of the layers, the storage locations in the logical storage space having contiguously numbered logical addresses; storing in an address limit memory at least a value for a parameter indicating a maximum value of the logical addresses of the storage locations in the first layer; and changing by a processor the maximum value in the address limit memory and to provide an output when the maximum value cannot be changed to avoid attempting changing the maximum value. 1. A method of operating a medium access device comprising acts of:writing by a writer information in a logical storage space of a storage medium which has a physical storage space comprising two or more layers of physical storage locations, each storage location having a physical address, the logical storage space comprising storage locations within a first layer of the layers and within a subsequent layer of the layers, the storage locations in the logical storage space having contiguously numbered logical addresses;storing in an address limit memory at least a value for a parameter indicating a maximum value of the logical addresses of the storage locations in the the first layer; andchanging by a processor the maximum value in the address limit memory and to provide an output when the maximum value cannot be changed to avoid attempting changing the maximum value.2. The method of claim 1 , further comprising acts of:comparing the logical address of the current block with the maximum value stored in the address limit memory while writing in the first layer; andmaking a transition to the first available block in the ...

OPTICAL MEMORY DEVICES USING A SILICON WIRE GRID POLARIZER AND METHODS OF MAKING AND USING

Long term optical memory includes a storage medium composed from an array of silicon nanoridges positioned onto the fused silica glass. The array has first and second polarization contrast corresponding to different phase of silicon. The first polarization contrast results from amorphous phase of silicon and the second polarization contrast results from crystalline phase of silicon. The first and second polarization states are spatially distributed over plurality of localized data areas of the storage medium.

Multilayer optical information recording disk and method for manufacturing same

A multilayer optical information recording disk comprising a plurality of recording layers and intermediate layers provided between the plurality of recording layers, and a method for manufacturing the same are provided. At least one of two intermediate layers disposed adjacent to respective sides of one recording layer is made of adhesive. Each of the recording layers includes a polymer binder and a dye dispersed in the polymer binder or includes a polymer to which a dye is bonded. Each recording layer is configured such that the dye absorbs a recording beam and generates heat which deforms the recording layer, causing an interface between the recording layer and the intermediate layer made of adhesive to have a protrusive shape protruding into the intermediate layer, thereby recording information thereat. The interface between the recording layer and the recording layer made of adhesive has a groove for track-following servo control.

OPTICAL INFORMATION STORAGE MEDIUM

An optical information storage medium includes a multilayer film that includes a plurality of extruded alternating active data storage layers and buffer layers, which separate the active data storage layers. The active data storage layers and buffer layers have thicknesses that allow the active data storage layers to be writable by non-linear or threshold writing processes to define data voxels within the active data storage layers that are readable by an optical reading device. 169-. (canceled)70. An optical information storage medium comprising a multilayer polymeric film that includes a plurality of coextruded alternating polymeric active data storage layers and polymeric buffer layers , which separate the active data storage layers , the active data storage layers including a fluorescent dye that undergoes a permanent optically induced localized nonlinear or threshold change of fluorescence intensity when written by a single wavelength nonlinear or threshold optical writing process with excitation within the absorption band of the fluorescent dye and at least one data voxel written and confined within a discrete active data storage layer of the active storage layers by the single wavelength nonlinear or threshold optical writing process , the active data storage layers and buffer layers having thicknesses that allow the active data storage layers to be writable by the single wavelength nonlinear or threshold optical writing process with excitation within the absorption band of the fluorescent dye to define the at least one data voxel within the discrete active data storage layer that is readable by an optical reading device.71. An optical information storage medium comprising a multilayer polymeric film that includes a plurality of coextruded alternating polymeric active data storage layers and polymeric buffer layers , the active data storage layers undergoing a permanent optically induced localized nonlinear or threshold change of optical properties when ...

MULTI-STACK OPTICAL STORAGE MEDIU

The invention relates to an optical storage medium comprising below an entrance face (EF) a higher recording stack (ST) comprising a higher recording layer (L) and at least a lower recording stack (ST), said lower recording stack (ST) being recorded or read back by a radiation beam () entering into the optical storage medium through the entrance face (EF) with a wavelength (λ), focused on said lower recording stack (ST) and transmitted through the higher recording stack (ST), a recording of the higher recording layer (L) causing an optical thickness variation between recorded and unrecorded areas of said first recording layer (L), which is included into the range [0.03λ, 0.125λ]. 1. An optical storage medium , which has the DVD format , comprising an entrance face;below the entrance face, a higher recording stack comprising a higher recording layer, the higher recording layer comprising an organic dye material and having a thickness greater than 28 nm and less than 116 nm and a refractive index,below the higher recording stack, at least a lower recording stack, the lower recording stack being recorded or read back by a radiation beam entering the optical storage medium through the entrance face with a wavelength, focused on the lower recording stack and transmitted through the higher recording stack, a recording of the higher recording layer causing a difference in optical thickness between recorded and unrecorded areas of the higher recording layer, which lies within the range of 0.03λ to 0.125λ, wherein λ is the wavelength of the radiation beam which is approximately equal to 655 nm.2. An optical storage medium according to claim 1 , wherein the higher recording stack comprises a metal reflector layer.3. An optical storage medium according to claim 1 , wherein the lower recording stack comprises a lower recording layer comprising an organic dye material and a metal reflector layer.4. An optical storage medium according to claim 2 , wherein the metal reflector ...

OPTICAL DISC AND OPTICAL DISC DEVICE

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method. 1. An optical disc comprising:a first recording layer, having a track upon which a first laser beam is focused; anda management area and a user data area provided on said first recording layer, said management area having recorded information representing if a second recording layer upon which a second laser beam is focused is present in said optical disc and other recorded information representing if a third recording layer upon which a third laser beam is focused is present in said optical disc, and said management area being located interiorly to said user data area,wherein a wavelength of said second laser beam is longer than that of said first laser beam,wherein a wavelength of said third laser beam is longer than that of said second laser beam,wherein each of said information comprises two bits,wherein said information indicating said second recording layer represents absence of said second recording layer by bit values of 00 in a first position, ...

OPTICAL DISC

An optical disc including at least three layers of recording layers that each record information in an information track. The recording layer includes: an inner circumferential side region positioned on the inner circumferential side; a data region which is positioned to the outer circumferential side of the inner circumferential side region and records content information; and an outer circumferential side region positioned to the outer circumferential side of the data region. The content information is recorded in the data region of the three or more layers, and a point on an upper layer and a point on a lower layer one layer below the upper layer at which playback switches from content information of the upper layer being played back in an inner circumferential direction to content information of the lower layer, are set to be more to the outside than an innermost circumferential position of the data region. 1. An optical disc , comprisingat least three layers of recording layers that each record information in an information track formed in a spiral from one to the other of an inner circumferential side and an outer circumferential side,the recording layer comprising:an inner circumferential side region positioned on the inner circumferential side;a data region positioned to the outer circumferential side of the inner circumferential side region, the data region recording content information; andan outer circumferential side region positioned to the outer circumferential side of the data region,the content information being recorded in the data region of the three or more layers of recording layers, and a point on an upper layer and a point on a lower layer one layer below the upper layer at which playback switches from content information of the upper layer being played back in an inner circumferential direction to content information of the lower layer, being set so as to be more to the outside than an innermost circumferential position of the data region.2. ...

Optical information recording medium

An optical information recording medium includes at least one recording layer. The recording layer includes a recording material comprising a polymer compound to which a one-photon absorption dye is bonded, and a coupling strength Δ 2 between the one-photon absorption dye and the polymer compound in the recording material is higher than a coupling strength estimated to be exerted between the same one-photon absorption dye and the same polymer compound if the one-photon absorption dye is dispersed in the polymer compound in the recording material.

OPTICAL DISC

An optical disc is formed by bonding a first information recording medium to a second information recording medium. The first information recording medium includes a first substrate having opposed first and second surfaces, at least one dielectric film, at least one recording film, and a cover layer. The second information recording medium includes a second substrate having opposed third and fourth surfaces, at least one dielectric film, at least one recording film, and a cover layer. The second surface of the first substrate is bonded to the fourth surface of the second substrate. At least one of the second surface or the fourth surface includes a depression and a projection. The depression is formed in a thickness direction of the optical disc. The projection is provided inside the depression at a predetermined distance or longer from an outer circumferential edge of the depression in a radial direction of the optical disc. 1. An optical disc that enables information to be recorded on and read from both surfaces , the optical disc comprising:a first information recording medium; anda second information recording medium bonded to the first information recording medium,whereinthe first information recording medium includes a first substrate having opposed first and second surfaces, at least one dielectric film, at least one recording film, and a cover layer, the at least one dielectric film and the at least one recording film being formed on the first surface of the first substrate, the cover layer protecting the at least one dielectric film and the at least one recording film,the second information recording medium includes a second substrate having opposed third and fourth surfaces, at least one dielectric film and at least one recording film, and a cover layer, the at least one dielectric film and the at least one recording film being formed on the third surface of the second substrate, the cover layer protecting the at least one dielectric film and the at least ...

OPTICAL MEMORY DEVICES USING A SILICON WIRE GRID POLARIZER AND METHODS OF MAKING AND USING

Long term optical memory includes a storage medium composed from an array of silicon nanoridges positioned onto the fused silica glass. The array has first and second polarization contrast corresponding to different phase of silicon. The first polarization contrast results from amorphous phase of silicon and the second polarization contrast results from crystalline phase of silicon. The first and second polarization states are spatially distributed over plurality of localized data areas of the storage medium. 1. An optical memory device , comprising:an optically transparent substrate;a storage medium disposed on the substrate and comprising a substantially planar array of silicon nanoridges, wherein the silicon nanoridges are configured and arranged for transformation between a first state and a second state, wherein the first and second states have different responses to polarized light of a predetermined wavelength, wherein the storage medium is configured and arranged to be spatially divided into a plurality of data areas;a light source configured and arranged to produce a beam of polarized light having the predetermined wavelength and directed onto the storage medium; anda detector configured and arranged to receive and detect polarized light from the data areas of the storage medium in response to the beam of polarized light being directed onto the storage medium.2. The optical memory device of claim 1 , wherein the first state corresponds to an amorphous phase of silicon and the second state corresponds to a crystalline phase of silicon.3. The optical memory device of claim 1 , wherein the different responses to polarized light comprises a polarization contrast ratio of the array in the first state being measurably different from a polarization contrast ratio of the array in the second state.4. The optical memory device of claim 1 , wherein the optically transparent substrate is fused silica glass.5. The optical memory device of claim 1 , wherein the array of ...

Optical recording medium

An optical recording medium which comprises a 0.3 to 2.0 mm-thick substrate made from a thermoplastic resin and having embossed pits or guide grooves, a reflection layer formed on the substrate and a 3 to 200 µm-thick transparent protective layer formed on the reflection layer and which reproduces recorded information based on a change in the intensity of reflected light by applying a light beam from the transparent protective layer side, wherein    the substrate is formed from a polycarbonate resin having a specific chemical structure and a thermoplastic resin having specific physical properties. According to the present invention, there is provided an optical recording medium for surface recording and reproduction having a simple structure. Particularly, there is provided an optical recording medium having high recording density.

저장 매체, 기판 제조 방법, 데이터 검색 방법, 엠보싱 방법 및 데이터 저장 매체 형성 방법

바람직한 실시예에서, 데이터 저장 매체는 기판의 한쪽면이나 양쪽면에 배치되는 원하는 표면 형태들과, 또한 기판의 한쪽면이나 양쪽면에 배치되는 자기-광학 물질과 같은 데이터 저장층과 임의의 보호, 절연 및/혹은 반사층들로 그 자리(in situ) 형성될 수 있는, 동질이거나 이질의 플라스틱 기판을 포함한다. 기판은, 표면의 무결성과 매끄러움에 역효과 없이 강성을 증가하기 위해 사용되는 다양한 형태와 기하학의 보강제로, 동질의, 테이퍼 형상, 오목 형상 혹은 볼록 형상의 기하 구조를 실질적으로 가질 수 있다.

Optical recording medium having two separate recording layers

In an optical information recording medium having at least two information layer, guide grooves for tracking or sample pits or information pits corresponding to information signals are formed on a surface of a first substrate. A first information layer formed by a thin film for reflecting a portion of a light beam made incident on the first substrate and permitting penetration of a portion of the light beam is formed on a surface of the first substrate. Guide grooves for tracking or information pits corresponding to information signals are formed on a surface of a second substrate. A second information layer having a reflectance higher than that of the first information layer is formed on a surface of the second substrate. Between the first information layer and the second information layer, there is formed a transparent separation layer for positioning the first information layer and the second information layer to be spaced a predetermined distance apart from each other.

Optical information recording medium, recording and reproducing method therefor and optical information recording and reproduction apparatus

A multi-layer optical information recording medium has a first information layer (7) located at the incident side for a laser beam and another information layer (17) at the back thereof. Thus, it has a large capacity. A relationship that R1a < R1c and R2a > R2c holds for the reflectances R1a and R1c of the information layer (7) in a recorded portion and in a non-recorded portion, and the reflectances R2a and R2a of the information layer (17) in a recorded portion and in a non-recorded portion. A relationship that A1a < A1c holds between the absorptances A1c and A1a of the first information layer in the crystalline state and in the amorphous state. Similarly, a relationship that A2a < A2c holds between absorptances A2c and A2a of the second information layer in the crystalline state and in the amorphous state. Thus, signals can be written to the recording medium at a fast speed and at high sensitivity.

Nano-scale resolution holographic lens and pickup device

An extremely high resolution holographic lens is provided, comprising an interference pattern between light emitted from at least one tiny point source of light such as the tip of an optical fiber, having a diameter in the nanoscale region, and at least one plane or quasi-plane broad light beam. The holographic lens is employed for example in pickups for reading data off of, and writing data upon terabit optical storage mediums and nanoscale resolution microscopic media.

Multiple layer optical storage device

A multi-layer optical information storage system comprising several layers of generally flat waveguide, arranged one on top of the other in a stack. The reading energy is projected through the layers perpendicularly, and is focussed onto the layer to be read. A detector disposed at the side of the layers detects the energy scattered or reflected from information or data points within the layer. The points within the layers may be in the form of defects of a type that can carry the information assigned to each point, generally by means of the presence or absence of the defect. The energy scattered or reflected from the defects in any specific layer is preferably contained within that layer because of waveguiding properties imparted to the layers by means of a graded or stepped index structure.

Optical information recording medium comprising a first layer having a phase that is reversibly changeable and a second information layer having a phase that is reversibly changeable

A multi-layer optical information recording medium has a first information layer located at the incident side for a laser beam and another information layer at the back thereof. Thus, it has a large capacity. A relationship that R 1 a <R 1 c and R 2 a <R 2 c holds for the reflectances R 1 a and R 1 c of the information layer in the in a recorded portion and in a non-recorded portion, and the reflectances R 2 a and R 2 c of the information layer in a recorded portion and in a non-recorded portion. A relationship that A 1 a <A 1 c holds between the absorptances A 1 c and A 1 a of the first information layer in the crystalline state and in the amorphous state, similarly, a relationship A 2 a <A 2 c holds between absorptances A 2 c and A 2 a of the second information layer in the crystalline state and in the amorphous state. Thus, signals can be written to the recording medium at a fast speed and at high sensitivity.

Optical information recording medium and reproducing apparatus with layer identification

In an optical information recording medium having at least two information layer, guide grooves for tracking or sample pits or information pits corresponding to information signals are formed on a surface of a first substrate. A first information layer formed by a thin film for reflecting a portion of a light beam made incident on the first substrate and permitting penetration of a portion of the light beam is formed on a surface of the first substrate. Guide grooves for tracking or information pits corresponding to information signals are formed on a surface of a second substrate. A second information layer having a reflectance higher than that of the first information layer is formed on a surface of the second substrate. Between the first information layer and the second information layer, there is formed a transparent separation layer for positioning the first information layer and the second information layer to be spaced a predetermined distance apart from each other.

Optical recording medium, and recording and reproducing method and optical recording and reproducing apparatus of optical recording medium

The present invention is aimed at providing a dual-layer phase-change optical recording medium which allows a high-density recording and a recording, where the optical recording medium has a high recording sensitivity even to a low power light with a short wavelength such as blue laser beam, does not cause noises such as jitter, has superior overwrite performance and favorable archivability, allows easier focusing and tracking and enables a compatibility with a ROM. Therefore, it provides an optical recording medium including a substrate and, on the substrate at least a first recording composite layer, an intermediate layer, a second recording composite layer and a cover substrate in this order, wherein the groove depth of the cover substrate is such that the magnitude of a push-pull signal of the first recording composite layer is equal or greater with respect to a push-pull signal of the second recording composite layer.

OPTICAL STORAGE MEDIUM

An optical information storage medium includes a substrate and a multilayer polymeric film. The multilayer polymeric film has a first surface and an opposite second surface that extend the length of the multilayer polymeric film. The second surface is adhered to a surface of the substrate. The multilayer polymeric film includes a plurality of coextruded alternating polymeric active data storage layers and polymeric buffer layers. 1. An optical disc comprising:a substrate having a first surface and an opposite second surface, a multilayer polymeric film adhered to the first surface of the substrate, and a coverlayer and/or a hard coat layer adhered to an outer surface of the multilayer polymeric film, the multilayer polymeric film including a plurality of coextruded alternating polymeric active data storage layers and polymeric buffer layers, the active data storage layers configured to undergo a permanent induced localized nonlinear or threshold change of optical properties when written by a one photon or multi-photon optical writing process, the buffer layers separating the active data storage layers with sufficient thicknesses to axially confine at least one data voxel written by the optical writing process into a single discrete active data storage layer that is readable by an optical reading device, wherein the buffer layers have an average thickness of 3 μm to about 100 μm, and wherein at least one of the substrate, the multilayer polymeric film, or the cover layer includes at least one tracking feature that provides optical guidance to an optical reading and/or optical writing device during the optical reading and/or optical writing process.2. The disc of claim 1 , wherein the first surface of the substrate includes the at least one tracking feature.3. The disc of claim 2 , wherein the at least one tracking feature includes a plurality of lands and grooves in the first surface of the substrate.4. The disc of any of to claim 2 , wherein the multilayer polymeric ...

Optical information medium having separate recording layers

레이저 빔(14, 15)을 사용하여 재기록가능한 기록용의 광 정보매체는, 2개의 유전층(9, 11) 사이에 삽입된 상변화형 기록층(10)을 구비한 제 1 기록 적층체(8)와, 2개의 유전층(4, 6) 사이에 삽입된 상변화형 기록층(5)을 구비한 제 2 기록 적층체(2)를 갖는다. 투명 스페이서층(3)은, 제 1 기록 적층체(8)와 제 2 기록 적층체(2) 사이에 삽입된다. 금속 거울층(3)은, 투명 스페이서층(7)과 반대쪽의 면에 제 2 기록 적층체(2)에 인접하여 존재한다. 제 1 기록 적층체(8)는, 대체로 성장 중심의 또는 대체로 핵형성 중심의 결정화를 갖는 상변화형 기록층(10)을 구비한다. 제 2 기록 적층체(2)는, 제 1 기록 적층체(8)에 대해 선택된 형태와 다른 형태의 상변화형 기록층(5)을 구비한다. 기록층들(5, 10)에 대해 거의 동일한 레이저 광 기록 펄스 방식과 기록 속도로 최적의 기록 및 소거 거동이 달성된다. An optical information carrier for recording rewritable using laser beams 14, 15 includes a first recording stack 8 having a phase change recording layer 10 interposed between two dielectric layers 9, 11. And a second recording stack 2 having a phase change recording layer 5 interposed between the two dielectric layers 4 and 6. The transparent spacer layer 3 is inserted between the first recording stack 8 and the second recording stack 2. The metal mirror layer 3 exists adjacent to the second recording stack 2 on the surface opposite to the transparent spacer layer 7. The first recording stack 8 is provided with a phase change type recording layer 10 having a crystallization center of growth or generally nucleation center. The second recording stack 2 includes a phase change recording layer 5 in a form different from that selected for the first recording stack 8. Optimal recording and erasing behavior is achieved with the same laser light recording pulse scheme and writing speed for the recording layers 5, 10. 광 정보매체, 결정화, 핵형성, 성장, 상변화 기록 Optical information carrier, crystallization, nucleation, growth, phase change recording

Information Recording Medium and Method for Producing the Same

고밀도 기록에 있어서, 계면층을 구비하는 일 없이, 신뢰성과 반복 재기록 성능을 양립하는 우수한 정보기록 매체를 제공한다. In high-density recording, an excellent information recording medium providing both reliability and repeatable rewritability without providing an interfacial layer is provided. 기판(1) 상에, 적어도 기록층(4)과 반사층(8)을 구비하고, 기록층(4)이 광학적 수단 혹은 전기적 수단에 의해, 결정상과 비정질상과의 사이에서 상변태를 일으키고, 기판(1) 상에, (ZrO 2 ) X (Zn-S) 100-X (mol％)로 표현되며, 또한 Ⅹ이, 50 Ⅹ 80의 범위에 있는 재료로 이루어지는 유전체층(2, 6)을 추가로 구비하고 있다. At least the recording layer 4 and the reflective layer 8 are provided on the board | substrate 1, The recording layer 4 produces a phase transformation between a crystalline phase and an amorphous phase by optical means or an electrical means, and the board | substrate 1 ) Is represented by (ZrO 2 ) X (Zn-S) 100-X (mol%), and further, Ⅹ The dielectric layers 2 and 6 which consist of material in the range of 80 are further provided.

Information storage medium and method and system for recording data on the same

복수개의 정보저장층을 가진 기록 가능한 정보저장매체가 개시되어 있다.  A recordable information storage medium having a plurality of information storage layers is disclosed. 이 개시된 정보 저장매체는, 복수 개의 정보 저장층을 갖는 기록가능한 정보 저장 매체에 있어서, 상기 정보 저장층 각각은 리드인 영역, 사용자 데이터 영역, 리드아웃 영역 및 드라이브를 위한 전용 영역을 포함하고, 기록할 사용자 정보의 용량을 등분하여 상기 각 정보 저장층에 동일한 용량의 데이터 영역이 할당되는 것을 특징으로 한다. The disclosed information storage medium is a recordable information storage medium having a plurality of information storage layers, each of the information storage layers including a lead-in area, a user data area, a lead-out area, and a dedicated area for a drive. The data area having the same capacity is allocated to each of the information storage layers by dividing the capacity of the user information to be divided.

Носитель хранения информации, способ и система записи данных на него

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2006 130 794 (13) A (51) ÌÏÊ G11B 7/007 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2006130794/28, 24.02.2005 (71) Çà âèòåëü(è): ÑÀÌÑÓÍà ÝËÅÊÒÐÎÍÈÊÑ ÊÎ., ËÒÄ. (KR) (30) Êîíâåíöèîííûé ïðèîðèòåò: 28.02.2004 KR 10-2004-0013788 (43) Äàòà ïóáëèêàöèè çà âêè: 27.02.2008 Áþë. ¹ 6 (72) Àâòîð(û): ËÈ Êèóíã-Ãåóí (KR), ÕÂÀÍà Âîîê-Éåîí (KR) (87) Ïóáëèêàöè PCT: WO 2005/083690 (09.09.2005) Àäðåñ äë ïåðåïèñêè: 129010, Ìîñêâà, óë. Á.Ñïàññêà , 25, ñòð.3, ÎÎÎ "Þðèäè÷åñêà ôèðìà Ãîðîäèññêèé è Ïàðòíåðû", ïàò.ïîâ. Ã.Á. Åãîðîâîé, ðåã.¹ 513 R U (57) Ôîðìóëà èçîáðåòåíè 1. Çàïèñûâàåìûé íîñèòåëü õðàíåíè èíôîðìàöèè, ñîäåðæàùèé ìíîæåñòâî ñëîåâ çàïèñè èíôîðìàöèè, â êîòîðîì êàæäûé èç ñëîåâ çàïèñè èíôîðìàöèè âêëþ÷àåò â ñåá íà÷àëüíóþ îáëàñòü, îáëàñòü ïîëüçîâàòåëüñêèõ äàííûõ, êîíå÷íóþ îáëàñòü è ñïåöèàëüíóþ îáëàñòü äë èñïîëüçîâàíè äèñêîâîäîì, à êîëè÷åñòâî ïîëüçîâàòåëüñêèõ äàííûõ, ïîäëåæàùèõ çàïèñè ðàçäåë åòñ òàê, ÷òîáû ðàñïðåäåëèòü îáëàñòè ïîëüçîâàòåëüñêèõ äàííûõ, èìåþùèå ïðèáëèçèòåëüíî ðàâíóþ åìêîñòü, íà êàæäûé èç ñëîåâ çàïèñè èíôîðìàöèè. 2. Çàïèñûâàåìûé íîñèòåëü õðàíåíè èíôîðìàöèè ïî ï.1, â êîòîðîì ðàñïîëîæåíèå êàæäîé êîíå÷íîé îáëàñòè èçìåí åòñ ñîãëàñíî åìêîñòè ñîîòâåòñòâóþùåé îáëàñòè ïîëüçîâàòåëüñêèõ äàííûõ. 3. Çàïèñûâàåìûé íîñèòåëü õðàíåíè èíôîðìàöèè ïî ï.1 èëè 2, â êîòîðîì êàæäà ñïåöèàëüíà îáëàñòü ðàçìåùåíà ïî ñàìîìó äàëüíåìó îò öåíòðà ïåðèìåòðó íîñèòåë õðàíåíè èíôîðìàöèè. 4. Çàïèñûâàåìûé íîñèòåëü õðàíåíè èíôîðìàöèè ïî ï.3, â êîòîðîì, êîãäà îñòàþòñ îáëàñòè ìåæäó ñîîòâåòñòâóþùèìè îäíèìè èç êîíå÷íîé îáëàñòè è ñïåöèàëüíîé îáëàñòè êàæäîãî ñëî çàïèñè èíôîðìàöèè, äàííûå òóäà íå çàïèñûâàþòñ . 5. Çàïèñûâàåìûé íîñèòåëü õðàíåíè èíôîðìàöèè ïî ï.1 èëè 2, â êîòîðîì ñïåöèàëüíà îáëàñòü âë åòñ òåñòîâîé îáëàñòüþ. 6. Çàïèñûâàåìûé íîñèòåëü õðàíåíè èíôîðìàöèè ïî ï.1 èëè 2, â êîòîðîì ðàñïîëîæåíèå êàæäîé ñïåöèàëüíîé îáëàñòè ôèêñèðóåòñ . 7. Çàïèñûâàåìûé íîñèòåëü õðàíåíè èíôîðìàöèè ïî ï.1 èëè 2, ...

Оптический носитель записи и способ его изготовления

1. Оптический носитель записи, содержащий: подложку; записывающий слой, сформированный на подложке, содержащей In, Sn, Pd и кислород, причем содержание атомов кислорода больше, чем в стехиометрическом составе в случае, когда In и Sn являются полностью окисленными; и светопропускающий слой, сформированный на записывающем слое.2. Оптический носитель записи по п.1, в котором записывающий слой включает два или более слоев и промежуточный слой между двумя слоями.3. Способ изготовления оптического носителя записи, в котором записывающий слой сформирован на подложке, и оптический пропускающий слой сформирован на записывающем слое, включающий стадию, на которой записывающий слой, содержащий In, Sn, Pd и кислород, формируют на подложке путем напыления при прохождении газообразного кислорода с использованием мишеней InO, SnOи Pd.4. Способ изготовления оптического носителя записи, по п.3, в котором скорость потока газообразного кислорода устанавливают в диапазоне 10-100 см/мин, включая оба эти значения.5. Способ изготовления оптического носителя записи по п.3, в котором формируют на подложке два или более записывающих слоев с промежуточным слоем между записывающими слоями, и записывающий слой, содержащий In, Sn, Pd и кислород, формируют в качестве по меньшей мере одного из двух или более записывающих слоев путем напыления при прохождении газообразного кислорода с использованием мишеней InO, SnOи Pd. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК G11B 7/243 (13) 2011 137 444 A (2013.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2011137444/28, 10.03.2010 (71) Заявитель(и): СОНИ КОРПОРЕЙШН (JP) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): МИКИ Такеси (JP) 17.03.2009 JP 2009-064958 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 09.09.2011 R U (43) Дата публикации заявки: 20.03.2013 Бюл. № 8 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2010/106945 (23.09.2010) R U (54) ОПТИЧЕСКИЙ НОСИТЕЛЬ ЗАПИСИ И ...