Holographic disk medium with servo marks

The present invention relates to a holographic disk medium ( 1 ) with servo marks ( 7 ), and more specifically to a holographic disk medium ( 1 ) having a common reflective layer ( 3 ) for reflecting a servo beam ( 9 ) and object and reference beams ( 8 ). According to the invention, a holographic disk medium ( 1 ) with a recording layer ( 2 ) for recording holograms ( 6 ) and a reflective layer ( 3 ) for reflecting a servo beam ( 9 ) and object and reference beams ( 8 ), includes servo marks ( 7 ) which are located in the reflective layer ( 3 ) at least partly below the holograms ( 6 ), wherein the servo marks ( 7 ) are designed such that their influence on the object and reference beams ( 8 ) is minimized.

SCANNING DEVICE HAVING A HOLDING FIXTURE FOR COOLING OF A PICKUP

The device comprises a scanning apparatus with a pickup for reading and/or recording data on a storage medium, a holding fixture for providing a parking position for the scanning apparatus, and a magnetic drive actuator for a movement of the scanning apparatus, wherein the holding fixture comprises a heat sink for cooling down the pickup. The scanning apparatus is in particular of a swing arm type and the pickup is an optical pickup comprising a laser diode.

Apparatus for recording angular multiplexed pits

An apparatus for recording angular multiplexed pits on optical recording media using a device for generating a light beam with an asymmetric intensity distribution is described. The device for generating a light beam with an asymmetric intensity distribution has at least one light influencing part for introducing a phase shift of 180° in a first half of the light beam relative to the second half of the light beam, wherein the border between the first half of the light beam and the second half of the light beam is rotatable around an optical axis of the light beam.

Apparatus comprising a pickup providing multiple beams

The apparatus includes a pickup for reading data from a super-resolution optical disc, the pickup comprising a laser for generating a main beam, a first and a second satellite beam, the two satellite beams each having a radial offset with regard to the main beam, a third satellite beam following the first satellite beam, having the same radial offset as the first satellite beam, and a fourth satellite beam following the second satellite beam, having the same radial offset as the second satellite beam, for providing a crosstalk correction of the HF data signal. The track pitch between adjacent tracks of the optical disc is particularly below the diffraction limit of the pickup, and the light intensity of each of the first and second satellite beams and of the main beam is sufficient to provide a super-resolution effect on the optical disc and the light intensity of each of the third and fourth satellite beams is not sufficient to provide the super-resolution effect. The track pitch between ...

High data density optical recording medium

A high data density optical recording medium, a method and an apparatus for reading such an optical recording medium, and a method for mastering such an optical recording medium are proposed. For achieving a high data density the optical recording medium has marks that have a tip and are covered by a material that generates a detectable effect under the influence of high electric fields.

System comprising an optical disc and an apparatus for reading of respective data

The optical disc comprises a substrate layer and a data layer disposed on the substrate layer, the data layer having a mark/space data structure arranged in tracks which are arranged in groups being separated each by a land section. The tracks of the groups are each arranged as a spiral, and the start of a track of a consecutive group begins at a position corresponding with the end of a track of a preceding group. A group comprises advantageously an inner track, a center track and an outer track. The optical disc comprises in a preferred embodiment a nonlinear layer with a super-resolution structure and the track pitch between neighboring tracks within a group is below the diffraction limit of a corresponding pickup for reading of data. Further, a tracking method is described which does not rely on tracking offsets to detect the inner and outer tracks of a group.

METHOD AND APPARATUS FOR READING FROM A NEAR-FIELD OPTICAL RECORDING MEDIUM, AND NEAR-FIELD LENS FOR THE APPARATUS

A method and an apparatus for reading from a near-field optical recording medium are described. The apparatus includes:

Optical storage medium having different dimension of recorded marks and spaces on different tracks

The optical storage medium comprises a substrate layer and a data layer disposed on the substrate layer, the data layer having a mark/space data structure being arranged in tracks, wherein on a first track, the marks are enlarged in length and the spaces are shortened in length, and on an adjacent track, the marks are shortened in length and the spaces are enlarged in length. The track pitch between adjacent tracks is particularly below a diffraction limit of lambda/2*NA of a pickup for reading of the data.

Slider loading mechanism

The present invention relates to a flexible slider-loading mechanism for an optical drive with interchangeable optical storage media. A slider-loading mechanism according to the invention for an optical drive, having a slider which is fastened on a resilient arm and is lowered onto the surface of an optical storage medium and/or raised from the surface of the optical storage medium, is characterized in that a loading element which is not connected to the resilient arm is provided, the loading element acting on the resilient arm and causing the slider to be lowered and/or raised.

Optical storage medium comprising a mask layer with a super resolution near field structure

The optical storage medium according to the invention uses a mask layer as a super resolution near field structure, which comprises a doped semiconductor material. The semiconductor material is n-doped particularly such that the reflectivity of the semiconductor material is increased, when irradiated with a laser beam. As a semiconductor material advantageously an indium alloy and as a doping material selenium or tellurium can be used. For the manufacturing of a respective optical storage medium a sputtering method for depositing the doped semiconductor material as the mask layer can be used, wherein the dopant is included already in the semiconductor sputtering target.

Objective lens and optical pickup comprising the objective lens

Optical pickup 24 for operation in the far-field and in the near-field mode comprising a movable part 26 having an objective lens 2 comprising a solid immersion lens 4 and a multifocal lens 6, which are both disposed on a common optical axis A. The multifocal lens 6 comprises a central zone 8 and a peripheral zone 10 being circumferential to the central zone 8. The peripheral zone is adapted to constitute an optical system for a far-field mode. The central zone 8 of the multifocal lens 6 together with the solid immersion lens 4 are adapted to constitute an optical system for a near-field mode. The solid immersion lens and the multifocal lens are adapted to be moved in unison. A method for operating an optical pickup 24 comprises a first approach to a surface 21 of an optical storage medium 22 with the movable part 26 to reach a far-field working distance DF based on a focus control using an optical system for working in the far-field mode, and a subsequent approach to the surface 21 of ...

OPTICAL STORAGE MEDIUM COMPRISING TRACKS WITH DIFFERENT WIDTH AND RESPECTIVE PRODUCTION METHOD

The optical storage medium comprises a substrate layer and a data layer with a mark/space structure arranged in tracks, wherein a sequence of marks of a first track have a first width, and a sequence of marks of a neighboring track have a second width being different from the first width. The optical storage medium is in particular an optical disc, on which the tracks are arranged as spirals, circular rings or segmented circular rings.

Objective lens and optical pickup comprising the objective lens

Optical pickup 24 for operation in the far-field and in the near-field mode comprising a movable part 26 having an objective lens 2 comprising a solid immersion lens 4 and a multifocal lens 6, which are both disposed on a common optical axis A. The multifocal lens 6 comprises a central zone 8 and a peripheral zone 10 being circumferential to the central zone 8. The peripheral zone is adapted to constitute an optical system for a far-field mode. The central zone 8 of the multifocal lens 6 together with the solid immersion lens 4 are adapted to constitute an optical system for a near-field mode. The solid immersion lens and the multifocal lens are adapted to be moved in unison. A method for operating an optical pickup 24 comprises a first approach to a surface 21 of an optical storage medium 22 with the movable part 26 to reach a far-field working distance DF based on a focus control using an optical system for working in the far-field mode, and a subsequent approach to the surface 21 of ...

APPARATUS FOR READING FROM AND/OR WRITING TO A NEAR-FIELD OPTICAL RECORDING MEDIUM

An apparatus for reading from or writing to a near-field optical recording medium capable of detecting tilt and spherical aberration is described. The apparatus comprises a light source for generating a reading light beam, a near-field lens, an aberration compensation element, and a diffractive optical element. The diffractive optical element is switchable between a far-field mode and a near-field mode and is adapted to generate a main light beam and four or more sub-beams from the reading light beam for determining at least a cover layer thickness error signal. For this purpose it has an outer region with a first grating period and an inner region having a diameter smaller than an effective numerical aperture of the near-field lens, which in the near-field mode has a second grating period and which has a switchable inner area having a diameter smaller than a far-field numerical aperture of the near-field lens, which in the far-field mode has the first grating period. The aberration compensation element is adapted to be adjusted based on the thickness error signal when the diffractive optical element is in the near-field mode. 1. An apparatus for reading from or writing to a near-field optical recording medium , with a light source for generating a reading light beam and with a near-field lens and an aberration compensation element , wherein the apparatus comprises a diffractive optical element that is switchable between a far-field mode and a near-field mode and is adapted to generate a main light beam and four or more sub-beams from the reading light beam for determining at least a cover layer thickness error signal , wherein the diffractive optical element has an outer region with a first grating period and an inner region having a diameter smaller than an effective numerical aperture of the near-field lens , which in the near-field mode has a second grating period and which has a switchable inner area having a diameter smaller than a far-field numerical aperture ...

Apparatus for recording angular multiplexed pits

An apparatus for recording angular multiplexed pits on optical recording media using a device for generating a light beam with an asymmetric intensity distribution is described. The device for generating a light beam with an asymmetric intensity distribution has at least one light influencing part for introducing a phase shift of 180° in a first half of the light beam relative to the second half of the light beam, wherein the border between the first half of the light beam and the second half of the light beam is rotatable around an optical axis of the light beam.

Holographic disk medium with servo marks

The present invention relates to a holographic disk medium (1) with servo marks (7), and more specifically to a holographic disk medium (1) having a common reflective layer (3) for reflecting a servo beam (9) and object and reference beams (8). According to the invention, a holographic disk medium (1) with a recording layer (2) for recording holograms (6) and a reflective layer (3) for reflecting a servo beam (9) and object and reference beams (8), includes servo marks (7) which are located in the reflective layer (3) at least partly below the holograms (6), wherein the servo marks (7) are designed such that their influence on the object and reference beams (8) is minimized.

Method for storing data on an optical recording medium

The invention relates to a method for storing data in a prerecorded area of an optical recording medium, and to an optical recording medium having at least one prerecorded area in which data is stored according to the method. It is an object to propose a method for storing data in a prerecorded area of an optical recording medium using pits and lands, whereby the signal obtained from the pits and lands is compatible with a high frequency modulated groove signal. According to the invention, the pits and lands adjacent to bit cell signal transitions are arranged in a predefined manner, either in a fixed recurring sequence of pits and lands or symmetrically to the bit cell signal transitions.

Slider with a constant flying height

The present invention relates to a slider having a constant flying height for an optical drive which is operated at a constant angular velocity. It is an object of the invention to propose a simple and cost-effective solution to allow the flying height of the slider to be kept virtually constant over the entire area of a storage medium, despite a variable linear velocity during operation at a constant angular velocity. According to the invention, this object is achieved by a drive for a storage medium which is driven at a constant angular velocity, having a slider which is attached by means of a spring arm to a carriage and floats on an air cushion above or under the rotating storage medium, and having a guide which guides the carriage relative to the storage medium, in which the guide is arranged such that the attachment point of the spring arm to the carriage is guided closer to the surface of the storage medium as the radius of the storage medium increases.

OPTICAL STORAGE MEDIUM COMPRISING TRACKS WITH MODIFIED MARK DIMENSIONS, AND RESPECTIVE APPARATUS FOR READING OF DATA

The optical storage medium comprises a substrate layer and a data layer disposed on the substrate layer, the data layer having a mark/space data structure being arranged in tracks, wherein on a first track, the marks are enlarged in length and the spaces are shortened in length, and on an adjacent track, the marks are shortened in length and the spaces are enlarged in length. The track pitch between adjacent tracks is particularly below a diffraction limit of λ/2*NA of a pickup for reading of the data.

High data density optical recording medium

A high data density optical recording medium, a method and an apparatus for reading from such an optical recording medium, and a method for mastering such an optical recording medium are proposed. For achieving a high data density the optical recording medium has marks that have a tip and are covered by a material that generates a detectable effect under the influence of high electric fields.

Recordable optical storage medium comprising a semiconductor layer, and respective manufacturing method

The recordable optical storage medium comprises a substrate layer, a data layer and a first and a second protection layer for the data layer, wherein the data layer comprises a semiconductor layer and a dopant layer with a doping material usable for doping the semiconductor layer. The semiconductor layer is in particular an intrinsic or essentially intrinsic semiconductor layer having a low reflectivity and the doping material of the dopant layer is selected such, that the reflectivity of the semiconductor layer is increased, when doping material of the dopant layer is diffused into the semiconductor layer.

Optical storage medium comprising tracks with positive and negative marks, and stampers and production methods for manufacturing of the optical storage medium

The optical storage medium comprises a substrate layer, a data layer with a mark/space structure arranged in tracks on the substrate layer, and a cover layer. One track comprises positive marks and a neighboring track comprises negative marks. The tracks are arranged in particular as spirals wherein one spiral contains a track with only positive marks and a neighboring spiral contains a track with only negative marks. The positive marks of a track and correspondingly the negative marks of a track are separated each by spaces. The optical storage medium is particularly a read-only optical disc and comprises a mask layer with a super resolution near field structure, wherein the tracks of the data layer are arranged as two spirals, one spiral consisting of positive marks only and the other spiral consisting of negative marks only. For the production of the optical storage medium, a stamper and production methods for a master for a stamper production are provided, comprising a surface with ...

Method for storing data on an optical recording medium

The invention relates to a method for storing data in a prerecorded area of an optical recording medium, and to an optical recording medium having at least one prerecorded area in which data is stored according to the method. It is an object to propose a method for storing data in a prerecorded area of an optical recording medium using pits and lands, whereby the signal obtained from the pits and lands is compatible with a high frequency modulated groove signal. According to the invention, the pits and lands adjacent to bit cell signal transitions are arranged in a predefined manner, either in a fixed recurring sequence of pits and lands or symmetrically to the bit cell signal transitions.

APPARATUS COMPRISING A PICKUP PROVIDING MULTIPLE BEAMS

The apparatus includes a pickup for reading data from a super-resolution optical disc, the pickup comprising a laser for generating a main beam, a first and a second satellite beam, the two satellite beams each having a radial offset with regard to the main beam, a third satellite beam following the first satellite beam, having the same radial offset as the first satellite beam, and a fourth satellite beam following the second satellite beam, having the same radial offset as the second satellite beam, for providing a crosstalk correction of the HF data signal. The track pitch between adjacent tracks of the optical disc is particularly below the diffraction limit of the pickup, and the light intensity of each of the first and second satellite beams and of the main beam is sufficient to provide a super-resolution effect on the optical disc and the light intensity of each of the third and fourth satellite beams is not sufficient to provide the super-resolution effect. The track pitch between adjacent tracks of the optical disc is advantageously below the diffraction limit of the pickup. 1. Apparatus comprising a pickup for reading data from a super-resolution optical disc ,the pickup comprising a laser for generating a main beam and a first and a second satellite beam, the two satellite beams having each a radial offset with regard to the main beam,the two satellite beams and the main beam being focused by an objective lens onto the optical disc and the reflected light from the optical disc being guided onto two detector units for providing a HF data signal, wherein the pickup generatesa third satellite beam following the first satellite beam, having the same radial offset as the first satellite beam, anda fourth satellite beam following the second satellite beam, having the same radial offset as the second satellite beam, for providing a crosstalk correction of the HF data signal.2. The apparatus of claim 1 , wherein the track pitch between adjacent tracks of the ...

Method and apparatus for reading from a near-field optical recording medium, and near-field lens for the apparatus

A method and an apparatus for reading from a near-field optical recording medium are described. The apparatus includes: an optical system for generating a signal beam and a reference beam; a near-field lens for illuminating the signal beam onto the near-field optical recording medium, for collimating a reflected signal beam, and for reflecting the reference beam; and at least a first detector and a second detector for obtaining a homodyne detection signal from the reflected signal beam and the reflected reference beam.

SYSTEM COMPRISING AN OPTICAL DISC AND AN APPARATUS FOR READING OF RESPECTIVE DATA

The optical disc comprises a substrate layer and a data layer disposed on the substrate layer, the data layer having a mark/space data structure arranged in tracks which are arranged in groups being separated each by a land section. The tracks of the groups are each arranged as a spiral, and the start of a track of a consecutive group begins at a position corresponding with the end of a track of a preceding group. A group comprises advantageously an inner track, a center track and an outer track. The optical disc comprises in a preferred embodiment a nonlinear layer with a super-resolution structure and the track pitch between neighboring tracks within a group is below the diffraction limit of a corresponding pickup for reading of data. Further, a tracking method is described which does not rely on tracking offsets to detect the inner and outer tracks of a group.

METHOD AND APPARATUS FOR MASTERING TRACKS ON A DISC BY UTILIZING AN ELECTRON BEAM, AND RESPECTIVE DATA DISC

The method provides a recording of data on a rotating disc by using an electron beam for recording marks along a track on the disc, the electron beam performing a wobble oscillation in a radial direction of the disc with a wobble amplitude for recording at least two tracks in parallel, and modulating the electron beam intensity for recording alternatingly a mark or a fraction of a mark of the first track or the second track. For recording a mark of a defined width, the electron beam is switched on in accordance with the mark width of the marks of each specific track, and is switched off for providing spaces between the marks of each track or a land area separating the marks of the first and second track. The method is used advantageously for recording tracks with a track pitch being below the diffraction limit for manufacturing a master disc for a production of read-only optical discs with a high data density.

Optical storage medium comprising a phase shift compensation

The optical storage medium comprises a substrate layer, a data layer having a pit/land data structure with data arranged in tracks on the substrate layer and a nonlinear layer with a super-resolution material, wherein the data structure comprises diffractive pits and lands having a size above an optical resolution limit of a pickup for reading of the data and super-resolution pits and lands having a size below the optical resolution limit, said pits and lands having a defined length with regard to a channel bit length. A diffractive land preceding a super-resolution pit is changed by a first length depending on the laser power of the pickup, and/or a diffractive pit preceding a super-resolution land is changed by the first length depending on the laser power of the pickup, to compensate a phase shift of the super-resolution pit, respectively super-resolution land.

Optical storage medium and apparatus for reading of respective data

The optical storage medium comprises tracks with a mark/space data structure, wherein the tracks comprise alternately partitioned marks and not partitioned marks. The partitioned marks are partitioned in particular in tracking direction and are partitioned in two parts, advantageously in two equal parts. The partitions are arranged advantageously such that one track comprises not partitioned marks and a neighboring track comprises partitioned marks, for reducing the track pitch of the optical storage medium and for providing an increased data capacity. The optical storage medium is in a preferred embodiment an optical disc comprising a mask layer with a suitable material for providing a super resolution near field effect, and the data structure of the optical disc comprises two spirals which have either partitioned marks or not partitioned marks. An apparatus for reading the data of a respective optical storage medium comprises a pick-up unit with a laser and a first optical element for ...

Apparatus comprising a pickup providing three beams for reading data from or writing data to an optical storage medium, and respective optical storage medium

The apparatus comprises a pickup with a laser, a detector unit and an objective lens for reading data from or writing data to a Super-RENS optical storage medium having a track pitch below the optical resolution limit, the pickup generating a main beam for reading and/or writing of data and generating two satellite beams for providing a tracking error signal, the three beams being focused by the objective lens onto the optical storage medium, and the reflected light from the optical storage medium being guided onto the detector unit. The main beam and the two satellite beams have a light intensity on the optical storage medium being sufficient for providing a super-resolution effect for the main beam as well as for each satellite beam. The light intensity of the two satellite beams is each in the order of 50 to 100% of the intensity of the main beam, if the apparatus is used for reading of data. The detector unit comprises in particular a main detector for detecting reflected light from ...

RECORDABLE OPTICAL STORAGE MEDIUM COMPRISING A SEMICONDUCTOR LAYER, AND RESPECTIVE MANUFACTURING METHOD

The recordable optical storage medium comprises a substrate layer, a data layer and a first and a second protection layer for the data layer, wherein the data layer comprises a semiconductor layer and a dopant layer with a doping material usable for doping the semiconductor layer. The semiconductor layer is in particular an intrinsic or essentially intrinsic semiconductor layer having a low reflectivity and the doping material of the dopant layer is selected such, that the reflectivity of the semiconductor layer is increased, when doping material of the dopant layer is diffused into the semiconductor layer ...

OPTICAL STORAGE MEDIUM, MASTERING METHOD AND APPARATUS FOR READING OF RESPECTIVE DATA

The optical storage medium comprises a substrate layer, and a data layer having a mark/space data structure with data arranged in tracks on the substrate layer, wherein between neighboring tracks alternatingly a groove section or a land section without a groove is arranged. The tracks, groove sections and land sections may be arranged by providing a single spiral, two spirals, or four spirals on the optical storage medium. The optical storage medium is in particular an optical disc comprising a nonlinear layer with a super-resolution structure arranged above the data layer.

Optical Storage Medium and Apparatus for Reading of Respective Data

The optical storage medium comprises tracks with a mark/space data structure, wherein the tracks comprise alternately partitioned marks and not partitioned marks. The partitioned marks are partitioned in particular in tracking direction and are partitioned in two parts, advantageously in two equal parts. The partitions are arranged advantageously such that one track comprises not partitioned marks and a neighboring track comprises partitioned marks, for reducing the track pitch of the optical storage medium and for providing an increased data capacity. The optical storage medium is in a preferred embodiment an optical disc comprising a mask layer with a suitable material for providing a super resolution near field effect, and the data structure of the optical disc comprises two spirals which have either partitioned marks or not partitioned marks. An apparatus for reading the data of a respective optical storage medium comprises a pick-up unit with a laser and a first optical element for providing a TM polarized beam and a TE polarized beam, a second optical element for separating the reflected TM and TE polarized beams, and a first and a second detector.

Optical storage medium comprising a mask layer with a super resolution near field structure

The optical storage medium according to the invention uses a mask layer as a super resolution near field structure, which comprises a doped semiconductor material. The semiconductor material is n-doped particularly such that the reflectivity of the semiconductor material is increased, when irradiated with a laser beam. As a semiconductor material advantageously an indium alloy and as a doping material selenium or tellurium can be used. For the manufacturing of a respective optical storage medium a sputtering method for depositing the doped semiconductor material as the mask layer can be used, wherein the dopant is included already in the semiconductor sputtering target.

Apparatus comprising a pickup providing three beams for reading data from or writing data to an optical storage medium, and respective optical storage medium

The apparatus comprises a pickup with a laser, a detector unit and an objective lens for reading data from or writing data to a Super-RENS optical storage medium having a track pitch below the optical resolution limit, the pickup generating a main beam for reading and/or writing of data and generating two satellite beams for providing a tracking error signal, the three beams being focused by the objective lens onto the optical storage medium, and the reflected light from the optical storage medium being guided onto the detector unit. The main beam and the two satellite beams have a light intensity on the optical storage medium being sufficient for providing a super-resolution effect for the main beam as well as for each satellite beam. The light intensity of the two satellite beams is each in the order of 50 to 100% of the intensity of the main beam, if the apparatus is used for reading of data. The detector unit comprises in particular a main detector for detecting reflected light from ...

Slider with A Constant Flying Height

The present invention relates to a slider having a constant flying height for an optical drive which is operated at a constant angular velocity. It is an object of the invention to propose a simple and cost-effective solution to allow the flying height of the slider to be kept virtually constant over the entire area of a storage medium, despite a variable linear velocity during operation at a constant angular velocity. According to the invention, this object is achieved by a drive for a storage medium which is driven at a constant angular velocity, having a slider which is attached by means of a spring arm to a carriage and floats on an air cushion above or under the rotating storage medium, and having a guide which guides the carriage relative to the storage medium, in which the guide is arranged such that the attachment point of the spring arm to the carriage is guided closer to the surface of the storage medium as the radius of the storage medium increases.

OPTICAL STORAGE MEDIUM COMPRISING A PHASE SHIFT COMPENSATION

The optical storage medium comprises a substrate layer, a data layer having a pit/land data structure with data arranged in tracks on the substrate layer and a nonlinear layer with a super-resolution material, wherein the data structure comprises diffractive pits and lands having a size above an optical resolution limit of a pickup for reading of the data and super-resolution pits and lands having a size below the optical resolution limit, said pits and lands having a defined length with regard to a channel bit length. A diffractive land preceding a super-resolution pit is changed by a first length depending on the laser power of the pickup, and/or a diffractive pit preceding a super-resolution land is changed by the first length depending on the laser power of the pickup, to compensate a phase shift of the super-resolution pit, respectively super-resolution land. 1. Optical storage medium comprisinga substrate layer,a data layer having a pit/land data structure with data arranged in tracks on the substrate layer, anda nonlinear layer with a super-resolution material disposed on the data layer, wherein the data structure comprises diffractive pits and lands having a length above an optical resolution limit of a pickup for reading of the data and super-resolution pits and lands having a length below said optical resolution limit, said pits and lands having a defined length with regard to a channel bit length, whereina diffractive land preceding a super-resolution pit is changed by a first length depending on the laser power of the pickup, to compensate a phase shift of said super-resolution pit, and/ora diffractive pit preceding a super-resolution land is changed by the first length depending on the laser power of the pickup, to compensate a phase shift of said super-resolution land.2. Optical storage medium according to claim I wherein the first diffractive land or diffractive pit following a sequence of super-resolution pits and lands is changed by a second length ...

Optical storage medium, mastering method and apparatus for reading of respective data

The optical storage medium comprises a substrate layer, and a data layer having a mark/space data structure with data arranged in tracks on the substrate layer, , wherein between neighboring tracks alternatingly a groove section or a land section without a groove is arranged. The tracks, groove sections and land sections may be arranged by providing a single spiral, two spirals, or four spirals on the optical storage medium. The optical storage medium is in particular an optical disc comprising a nonlinear layer with a super-resolution structure arranged above the data layer.

Disk shaped storage medium and clamper for the storage medium

Die vorliegende Erfindung betrifft ein plattenförmiges Speichermedium (1) und einen Klemmhalter (20) für ein solches plattenförmiges Speichermedium (1). Das Speichermedium (1) hat ein Innenloch (9) und eine Auflagefläche (8), wobei die Auflagefläche (8) drei Auflagepunkte (2) aufweist. Ein Klemmhalter (20) für das Speichermedium (1) hat eine Auflage (6) und einen Niederhalter (5), wobei die Auflage (6) und der Niederhalter (5) entsprechend der Auflagepunkte (2) abgestuft sind.

Hybrid read-only and recordable optical recording medium

The present invention relates to a hybrid optical recording medium (8) having at least one read-only area (84) and at least one recordable area (83). The invention further relates to a method and an apparatus for producing such a hybrid optical recording medium (8). The recordable area (83) has a guide structure (81) and is a low-to-high or a high-to-low recordable area (83). The reflectivity of the read-only area (84) matches the reflectivity of the recordable area (83) in its recorded state.

OPTICAL STORAGE MEDIUM WITH TRACKS WITH POSITIVE AND NEGATIVE MARKING AND PUNCHING AND MANUFACTURING METHOD FOR MANUFACTURING OPTICAL STORAGE MEDIUM

Flexible slider loading mechanism

Die vorliegende Erfindung betrifft einen flexiblen Slider-Lademechanismus für ein optisches Laufwerk mit wechselbaren optischen Speichermedien (8). DOLLAR A Ein erfindungsgemäßer Slider-Lademechanismus für ein optisches Laufwerk, mit einem Slider (2), der an einem Federarm (6) befestigt ist und auf die Oberfläche eines optischen Speichermediums (8) abgesenkt beziehungsweise von der Oberfläche des optischen Speichermediums (8) angehoben wird, ist dadurch gekennzeichnet, dass ein nicht mit dem Federarm (6) verbundenes Ladeelement (1) vorgesehen ist, das auf den Federarm (6) einwirkt und das Absenken beziehungsweise Anheben des Sliders (2) bewirkt. The present invention relates to a flexible slider loading mechanism for an optical drive with exchangeable optical storage media (8). DOLLAR A An inventive slider loading mechanism for an optical drive, with a slider (2) which is attached to a spring arm (6) and lowered onto the surface of an optical storage medium (8) or raised from the surface of the optical storage medium (8) is characterized in that a loading element (1) is provided which is not connected to the spring arm (6) and which acts on the spring arm (6) and causes the slider (2) to be lowered or raised.

Shock protection device for a scanning arm actuator having a scanning device

Die Erfindung betrifft eine Schockschutzeinrichtung für eine einen Schwingarm-Aktuator aufweisende Abtasteinrichtung, bei der der Schwingarm-Aktuator mit einem Kopf zur Aufzeichnung/Wiedergabe von Informationen mit einem Aufzeichnungsträger in Wirkverbindung steht und an einem Träger an einer senkrecht zum Schwingarm verlaufenden Schwenkachse gelagert ist und bei der dem Schwingarm ein Magnetantrieb für eine Schwenkbewegung parallel zum Aufzeichnungsträger und ein Magnetantrieb für eine Bewegung senkrecht zu diesem zugeordnet ist, mit einem Beschleunigungssensor zur Erkennung eines Schockereignisses. Sie löst die Aufgabe, die Schockschutzeinrichtung derart zu gestalten, dass der Schwingarm-Aktuator bei einem signalisierten Schockereignis auf einfache Weise fixiert wird. Dazu ist am Schwingarm (1) ein Dauermagnet (15) angeordnet, dem im Abstand vom Schwingarm (1) ein abtasteinrichtungsfester Elektromagnet (16) zugeordnet ist, der bei einem durch den Beschleunigungssensor (22) signalisierten Schockereignis mit einer Stromquelle (19) verbunden wird und den Dauermagneten (15) mit dem Schwingarm-Aktuator anzieht und fixiert.

Optical storage medium comprising tracks with modified mark dimensions, and respective apparatus for reading of data

The optical storage medium comprises a substrate layer and a data layer disposed on the substrate layer, the data layer having a mark/space data structure being arranged in tracks (T m , T n ), wherein on a first track (T m ), the marks (31) are enlarged in length and the spaces (32) are shortened in length, and on an adjacent track (T n ), the marks (33) are shortened in length and the spaces (34) are enlarged in length. The track pitch (TP) between adjacent tracks (T m , T n ) is particularly below a diffraction limit of λ/2*NA of a pickup for reading of the data.

SKID LOADER MECHANISM

Optical disc comprising two nonlinear layers separated by a spacer layer

The optical disc (20) comprises a substrate layer (S), a read-only data layer (3) having a pit/land data structure (P1-P4) arranged on the substrate layer, a first nonlinear layer (L6) with a super-resolution structure, and a second nonlinear layer (L2) with a super resolution structure or a reflective layer arranged between the first nonlinear layer (L6) and the data layer (3). Further, a spacer layer (L4) is disposed between the first and the second nonlinear layer (L6, L2), which spacer layer has a thickness (ST1) which is smaller between pits (P1-P4) and the first nonlinear layer (L6) with regard to the thickness (ST2) between lands (LA) and the first nonlinear layer (L6). The pits (P1-P4) are arranged in particular as protrusions on the data layer (3) and the spacer layer is disposed by using a spin-coating technique.

Optical storage medium comprising tracks with different width, and respective production method

The optical storage medium (1) comprises a substrate layer (2) and a data layer (3) with a mark/space structure arranged in tracks (T1-T6), wherein a sequence (Z1) of marks of a first track (T1) have a first width (w1), and a sequence (Z2) of marks of a neighboring track (T2) have a second width (w2) being different from the first width. The optical storage medium is in particular an optical disc (1), on which the tracks (T1-T6) are arranged as spirals, circular rings or segmented circular rings.

Optical storage medium comprising two semiconductor layers as non-linear layers

The optical storage medium comprises a substrate layer (2), a data layer (2a) arranged on the substrate layer, a first non-linear layer (4) with a super resolution near field structure, arranged above the data layer, a second non-linear layer (6) with a super resolution near field structure arranged above the first non-linear layer, and a first dielectric layer (3) disposed between the first and the second non-linear layer (4, 6). The first and the second non-linear layers (4, 6) comprise a semiconductor material, which has an increased reflectivity, when irradiated with a laser beam. The semiconductor material is in particular one of the III-V semiconductor family.

Optisches speichermedium mit spuren mit positiven und negativen markierungen und stanzer und herstellungsverfahren zum herstellen des optischen speichermediums

Apparatus comprising a pickup providing three beams for reading data from or writing data to an optical storage medium, and respective optical storage medium

Method for storing data on an optical recording medium

The invention relates to a method for storing data in a prerecorded area of an optical recording medium, and to an optical recording medium having at least one prerecorded area in which data is stored according to the method.It is an object to propose a method for storing data in a prerecorded area of an optical recording medium using pits (6) and lands ( 7), whereby the signal obtained from the pits ( 6) and lands (7) is compatible with a high frequency modulated groove signal.According to the invention, the pits ( 6) and lands( 7) adjacent to bit cell signal transitions( 1, 2, 3, 4) are arranged in a predefined manner, either in a fixed recurring sequence of pits 6) and lands (7) or symmetrically to the bit cell signal transitions (1, 2, 3, 4).

Method for storing data on an optical recording medium

The invention relates to a method for storing data in a prerecorded area of an optical recording medium, and to an optical recording medium having at least one prerecorded area in which data is stored according to the method.It is an object to propose a method for storing data in a prerecorded area of an optical recording medium using pits (6) and lands ( 7), whereby the signal obtained from the pits ( 6) and lands (7) is compatible with a high frequency modulated groove signal.According to the invention, the pits ( 6) and lands( 7) adjacent to bit cell signal transitions( 1, 2, 3, 4) are arranged in a predefined manner, either in a fixed recurring sequence of pits 6) and lands (7) or symmetrically to the bit cell signal transitions (1, 2, 3, 4).

Hybrid read-only and recordable optical recording medium

The present invention relates to an optical recording medium (8) having at least one read-only area and at least one recordable or rewritable area, as well as to a method for manufacturing such an optical recording medium (8). The optical recording medium (8) has at least a first data layer (L0, L1)) and a second data layer (L0, L1). While the first data layer (L0, L1) is either a read-only or a recordable or rewritable data layer, the second data layer (L0, L1) has a read-only part in an outer area of the optical recording medium (8) and a recordable or rewritable part in an inner area of the optical recording medium (8), or a read-only part in the inner area of the optical recording medium (8) and a recordable or rewritable part in the outer area of the optical recording medium (8).

Method for storing data on an optical recording medium

Optical recording medium for retail activation

The present invention relates to an optical recording medium (20) to be used for a retail activation solution. The optical recording medium (20) is a modified ROM disk that can only be played after the application of an activation process. For this purpose the optical recording medium (20) has one or more areas (21, 22) provided with a light sensitive layer stack that changes its reflectivity upon illumination. The invention further relates to a method for producing such an optical recording medium (20) as well as methods and apparatuses (30) for initializing and/or activating such an optical recording medium (20).

Optical storage medium comprising tracks with different width, and respective production method

Beschreibbares optisches speichermedium mit einer halbleiterschicht sowie herstellungsverfahren dafür

Gerät mit einem Lesekopf zur Bereitstellung von drei Strahlen zum Lesen von Daten oder Schreiben von Daten auf einem optischen Speichermedium und entsprechendes optisches Speichermedium

Optical recording medium with write-once and rewritable properties

Laser power management for Super-RENS optical recording media

Scanning device having a holding fixture for cooling of a pickup

The device comprises a scanning apparatus (1) with a pickup (3) for reading and/or recording data on a storage medium (OD), a holding fixture for providing a parking position for the scanning apparatus, and a magnetic drive actuator (4-7, 10) for a movement of the scanning apparatus (1), wherein the holding fixture (40, 50, 60, 70) comprises a heat sink for cooling down the pickup (3). The scanning apparatus (1) is in particular of a swing arm type and the pickup (3) is an optical pickup comprising a laser diode.

Optical storage medium and apparatus for reading of respective data

The optical storage medium comprises tracks (T1-T3) with a mark/space data structure, wherein the tracks comprise alternately partitioned marks (3) and not partitioned marks (2). The partitioned marks are partitioned in particular in tracking direction and are partitioned in two parts, advantageously in two equal parts. The partitions are arranged advantageously such that one track comprises not partitioned marks and a neighboring track comprises partitioned marks, for reducing the track pitch of the optical storage medium and for providing an increased data capacity. The optical storage medium is in a preferred embodiment an optical disc comprising a mask layer with a suitable material for providing a super resolution near field effect, and the data structure of the optical disc comprises two spirals which have either partitioned marks or not partitioned marks. This allows to increase the data density in tracking direction by a factor of two with regard to a Blu-Ray disc. An apparatus for reading the data of a respective optical storage medium comprises a pick-up unit with a laser and a first optical element for providing a TM polarized beam and a TE polarized beam, a second optical element for separating the reflected TM and TE polarized beams, and a first and a second detector. The TM polarized beam is guided to the first detector for providing a data signal and the TE polarized beam is guided to the second detector for providing a tracking signal.

Recordable optical storage medium comprising a semiconductor layer, and respective manufacturing method

The recordable optical storage medium comprises a substrate layer (2), a data layer and a first and a second protection layer (6, 7) for the data layer, wherein the data layer comprises a semiconductor layer (3, 4) and a dopant layer (5) with a doping material usable for doping the semiconductor layer (3, 4). The semiconductor layer is in particular an intrinsic or essentially intrinsic semiconductor layer having a low reflectivity and the doping material of the dopant layer is selected such, that the reflectivity of the semiconductor layer is increased, when doping material of the dopant layer is diffused into the semiconductor layer.

軌道具有標記／空間結構之光學儲存媒體及其資料之閱讀裝置

System comprising an optical disc and an apparatus for reading of respective data

The optical disc comprises a substrate layer and a data layer disposed on the substrate layer, the data layer having a mark/space data structure arranged in tracks (T1-T6) which are arranged in groups (G1, G2) being separated each by a land section (L). The tracks of the groups (G1, G2) are each arranged as a spiral (S1, S2), and the start (A) of a track (T4) of a consecutive group (G2) begins at a position corresponding with the end (E) of a track (T3) of a preceding group (G1). A group (G1, G2) comprises advantageously an inner track, a center track and an outer track. The optical disc comprises in a preferred embodiment a nonlinear layer with a super-resolution structure and the track pitch (TP) between neighboring tracks (T1, T2) within a group is below the diffraction limit of a corresponding pickup for reading of data. Further, a tracking method is described which does not rely on tracking offsets to detect the inner and outer tracks of a group.

Holographic disk medium with servo marks

THE PRESENT INVENTION RELATES TO A HOLOGRAPHIC DISK MEDIUM (1) WITH SERVO MARKS (7), AND MORE SPECIFICALLY TO A HOLOGRAPHIC DISK MEDIUM (1) HAVING A COMMON REFLECTIVE LAYER (3) FOR REFLECTING A SERVO BEAM (9) AND OBJECT AND REFERENCE BEAMS (8) ACCORDING TO THE INVENTION, A HOLOGRAPHIC DISK MEDIUM (1) WITH A RECORDING LAYER (2) FOR RECORDING HOLOGRAMS (6) AND A REFLECTIVE LAYER (3) FOR REFLECTING A SERVO BEAM (9) AND OBJECT AND REFERENCE BEAMS (8), INCLUDES SERVO MARKS (7) WHICH ARE LOCATED IN THE REFLECTIVE LAYER (3) AT LEAST PARTLY BELOW THE HOLOGRAMS (6), WHEREIN THE SERVO MARKS (7) ARE DESIGNED SUCH THAT THEIR INFLUENCE ON THE OBJECT AND REFERENCE BEAMS (8) IS MINIMIZED.

対物レンズ及び対物レンズを備えた光ピックアップ

【課題】ニアフィールドのデータ記憶用の対物レンズ及びその対物レンズを用いた光ピックアップ並びに光ピックアップの動作方法を提供する。 【解決手段】光ピックアップは、共通の光軸Ａに対して配設された、固浸レンズ４及び多焦点レンズ６を備えた対物レンズ２を有する可動部を備えている。多焦点レンズ６は、中央区域８及びその周辺を囲む周辺区域１０を備え、周辺区域１０は、ファーフィールドモード用の光学系を構成し、中央区域８は、固浸レンズ４と共に、ニアフィールドモード用の光学系を構成する。光ピックアップの動作方法は、ファーフィールド作動距離ＤＦに達するように、可動部による光記憶媒体の表面２１への第１の近接と、ニアフィールド作動距離ＮＦまで低減するように、光記憶媒体の表面２１への後続の近接とを含む。 【選択図】図２

光記憶メディアからデータを読み出すかまたは同メディアにデータを書き込むための３つのビームを供給するピックアップを備える装置、および対応する光記憶メディア

【課題】ブルーレーザダイオードを有するピックアップを使用するとき、具体的には高度なデータ記憶用途のためのシステムを確立することを目的とする。 【解決手段】本装置は、光学的解像限界より小さいトラックピッチ（ＴＰ）を有するスーパーＲＥＮＳ光記憶メディアからデータを読み出しまたは書き込むためにレーザと、検出器ユニットと、対物レンズとを有するピックアップを備え、ピックアップは、データの読み出しおよび／または書き込みのための主ビーム（Ｍ）を生成し、かつトラッキングエラー信号を供給するための２つの副ビーム（Ｓ１、Ｓ２）を生成し、３つのビームは、対物レンズにより光記憶メディア上に合焦され、光記憶メディアからの反射光は検出器ユニット上に導かれる。主ビームおよび２つの副ビームは、主ビームならびに各副ビームについて、光記憶メディア上に超解像効果をもたらすのに十分な光強度を有する。 【選択図】図３

包括拾波器之裝置及其所用之光學儲存媒體

Method for storing data on an optical recording medium

The invention relates to a method for storing data in a prerecorded area of an optical recording medium, and to an optical recording medium having at least one prerecorded area in which data is stored according to the method.It is an object to propose a method for storing data in a prerecorded area of an optical recording medium using pits (6) and lands ( 7), whereby the signal obtained from the pits ( 6) and lands (7) is compatible with a high frequency modulated groove signal.According to the invention, the pits ( 6) and lands( 7) adjacent to bit cell signal transitions( 1, 2, 3, 4) are arranged in a predefined manner, either in a fixed recurring sequence of pits 6) and lands (7) or symmetrically to the bit cell signal transitions (1, 2, 3, 4).

Method for storing data on an optical recording medium

Recordable optical storage medium comprising a semiconductor layer, and respective manufacturing method

Recordable optical storage medium comprising a semiconductor layer, and respective manufacturing method

The recordable optical storage medium comprises a substrate layer (2), a data layer and a first and a second protection layer (6, 7) for the data layer, wherein the data layer comprises a semiconductor layer (3, 4) and a dopant layer (5) with a doping material usable for doping the semiconductor layer (3, 4). The semiconductor layer is in particular an intrinsic or essentially intrinsic semiconductor layer having a low reflectivity and the doping material of the dopant layer is selected such, that the reflectivity of the semiconductor layer is increased, when doping material of the dopant layer is diffused into the semiconductor layer.

記錄式光學儲存媒體及其製法

Recordable optical storage medium comprising a semiconductor layer, and respective manufacturing method

The recordable optical storage medium comprises a substrate layer (2), a data layer and a first and a second protection layer (6, 7) for the data layer, wherein the data layer comprises a semiconductor layer (3, 4) and a dopant layer (5) with a doping material usable for doping the semiconductor layer (3, 4). The semiconductor layer is in particular an intrinsic or essentially intrinsic semiconductor layer having a low reflectivity and the doping material of the dopant layer is selected such, that the reflectivity of the semiconductor layer is increased, when doping material of the dopant layer is diffused into the semiconductor layer.

Objektivlinse und optischer aufnehmer mit der objektivlinse

Optical recording medium with write-once and rewritable properties

The present invention relates to a write-once optical recording medium (1), which in addition to the write-once properties also has rewritable properties. According to the invention, this object is achieved by an optical recording medium (1) with a recording layer (4) having at least a first recording sublayer (R1) and a second recording sublayer (R2) for recording information marks (3) by alloying material of the at least first and second recording layers (R1, R2), wherein the materials of the at least first and second recording sublayers (R1, R2) are chosen such that the alloyed material is a phase-change material adapted for recording additional data as phase changes of the alloyed material.

Optical storage medium comprising a mask layer with a super resolution near field structure

The optical storage medium according to the invention uses a mask layer (2) as a super resolution near field structure, which comprises a doped semiconductor material. The semiconductor material is n-doped particularly such that the reflectivity of the semiconductor material is increased, for example for providing a reflectivity factor above 0,9, when irradiated with a laser beam. As a semiconductor material advantageously an indium alloy and as a doping material selenium or tellurium can be used. For the manufacturing of a respective optical storage medium a sputtering method for depositing the doped semiconductor as the mask layer can be used, wherein the semiconductor material is for example InSb and the dopant is included already in the semiconductor sputtering target.

Optisches speichermedium mit einer maskenschicht mit einer superauflösungsnahfeldstruktur

Optisches speichermedium mit einer maskenschicht mit einer superauflösungsnahfeldstruktur

Optical storage medium comprising a mask layer with a super resolution near field structure

The optical storage medium according to the invention uses a mask layer (2) as a super resolution near field structure, which comprises a doped semiconductor material. The semiconductor material is n-doped particularly such that the reflectivity of the semiconductor material is increased, when irradiated with a laser beam. As a semiconductor material advantageously an indium alloy and as a doping material selenium or tellurium can be used. For the manufacturing of a respective optical storage medium a sputtering method for depositing the doped semiconductor material as the mask layer can be used, wherein the dopant is included already in the semiconductor sputtering target.

角度多重したピットを記録する装置

【課題】本発明は、非対称強度分布の光ビームを発生するデバイス（１）を用いて、光記録媒体上に角度多重したピットを記録する装置に関する。 【解決手段】本発明によれば、非対称強度分布の光ビームを発生するデバイス（１）は、光ビームの第１の半分の、光ビームの第２の半分に関する、１８０度の位相シフトを引き起こす少なくとも１つの光に影響する部分（３）を有し、光ビームの第１の半分と光ビームの第２の半分の間の境界は、光ビームの光軸の周りに回転可能である。 【選択図】図３

Vorrichtung zur Aufzeichnung winkelgemultiplexter Pits

System comprising an optical disc and an apparatus for reading of respective data

The optical disc comprises a substrate layer and a data layer disposed on the substrate layer, the data layer having a mark/space data structure arranged in tracks (T1-T6) which are arranged in groups (G1, G2) being separated each by a land section (L). The tracks of the groups (G1, G2) are each arranged as a spiral (S1, S2), and the start (A) of a track (T4) of a consecutive group (G2) begins at a position corresponding with the end (E) of a track (T3) of a preceding group (G1). A group (G1, G2) comprises advantageously an inner track, a center track and an outer track. The optical disc comprises in a preferred embodiment a nonlinear layer with a super-resolution structure and the track pitch (TP) between neighboring tracks (T1, T2) within a group is below the diffraction limit of a corresponding pickup for reading of data. Further, a tracking method is described which does not rely on tracking offsets to detect the inner and outer tracks of a group.

Objective lens and optical pickup comprising the objective lens

Optisches aufzeichnungsmedium zur einzelhandelsaktivierung

Optical storage medium comprising a mask layer with a super resolution near field structure

The optical storage medium according to the invention uses a mask layer (2) as a super resolution near field structure, which comprises a doped semiconductor material. The semiconductor material is n-doped particularly such that the reflectivity of the semiconductor material is increased, for example for providing a reflectivity factor above 0,9, when irradiated with a laser beam. As a semiconductor material advantageously an indium alloy and as a doping material selenium or tellurium can be used. For the manufacturing of a respective optical storage medium a sputtering method for depositing the doped semiconductor as the mask layer can be used, wherein the semiconductor material is for example InSb and the dopant is included already in the semiconductor sputtering target.