Optical information recording medium and reproducing apparatus

An optical information recording medium on which recording address information is performed by a CAV or a zone CAV system, wherein a groove wobbling continuously is formed in advance to record the information to the groove and a land abutting the groove, the address information is recorded by a wobble where a plurality of modulated waves modulated by the address information are multiply formed, the modulated wave is a higher harmonic wave whose frequency is a fundamental wave of the fundamental frequency of the wobble, or an integer times the fundamental frequency of the wobble, one modulated wave is modulated by the address information of one land of the abutting lands which interpose the groove, and the other modulated wave is modulated by the address information of the other land of the abutting lands which interpose the groove.

OPTICAL DISK RECORDING METHOD, OPTICAL DISK DEVICE, AND INTEGRATED CIRCUIT

A mark corresponding to recording data is formed on an optical disk by: encoding the recording data in accordance with a modulation code and generating encoded data; classifying the encoded data by a combination of at least two of a mark length of a mark, a space length of a preceding space, the mark length of a preceding mark, and the space length of a succeeding space; setting a correction amount for adjusting the position of the start edge and the end edge of a recording pulse based on an evaluation index of a decoding result, which is a result of decoding a reproduction signal of the encoded data, for each of the classification; and generating the recording pulse corresponding to the encoded data by using the correction amount corresponding to the classification of the run length of the encoded data. 1. An optical disk recording method for irradiating an optical disk with an optical beam to form a plurality of marks on a medium , and recording information using edge positions of each mark and a space between two adjacent marks , comprising:encoding recording data according to modulation codes to generate binary encoded data corresponding to the mark and the space;regarding run lengths of the mark and the space in the encoded data, if a mark of interest is target mark, classifying the encoded data according to a combination of at least two run lengths of a mark length of the target mark, a space length of a preceding space on a preceding side of the target mark, a mark length of a preceding mark on the preceding side of the target mark, and a space length of a succeeding space on a succeeding side of the target mark;for each classification of the run length of the encoded data, setting individual correction amounts for adjusting positions of a start edge and an end edge of a recording pulse for forming the mark, based on an evaluation index of a decoding result which is obtained when a reproduction signal obtained by reproducing the mark and space corresponding ...

A method of protection of optical media, such as CDs and DVDs against unauthorised copying and a non-standard optical audio disc and video disc with protection against loading and playing in personal computers and matrices for making thereof

Subject-matter is that between an inner edge and an outer edge of a lead-in area, are created by mechanical means grooves in the form of concentric circles around the central axis with the profile of the letter “V” in the protective layer, wherein these grooves have peaks and edges are created in such a way that the groove with the largest possible diameter of the circle does not exceed the inner part of the outer edge and the groove with the smallest possible diameter of the circle does not exceed the inner edge of the lead-in area, wherein the density of the grooves is such that edges of the grooves are touching each other on the surface of the protective layer and between the individual edges of the grooves there is no area undamaged by the grooves. Non-standard audio discs and video discs are manufactured by pressing from the matrix, they contain lead-in area data area and lead-out area and in the area with the radius from 18.00+1 mm to 23.50+1 mm are provided with the zone of the mechanical protection, which contains a set of grooves in the form of concentric circles, with the profile of the letter “V”, which are arranged closely to each other in such a way, that their upper edges are touching. 1. A method of protection of recorded storage media , such as an audio CD and a film DVD against their unauthorised copying and infringement of copyright by application of a protection element onto an optical storage medium , which in a cross-section contains a protective layer of polycarbonate , a recording layer with one or more recording layers , an adhesive layer and a printing layer and which contains a central hole arranged around the central axis , a lead-in area bordered by an outer edge and an inner edge , area for data recording and a lead-out area , wherein between the inner edge and the outer edge of the lead-in area , are created grooves in the form of concentric circles around a central axis with a profile of the letter “V” into a protective layer , wherein ...

OPTICAL MEDIUM REPRODUCING DEVICE AND OPTICAL MEDIUM REPRODUCING METHOD

There is provided an optical medium reproducing device configured to optically reproduce an optical medium including a plurality of tracks formed, the optical medium reproducing device including: an optical filter configured to receive an incident returned light beam from the optical medium, and to spatially and optically form a plurality of signals having different bands in a tangential direction and a radial direction; an arithmetic unit configured to operate the plurality of first signals formed by the optical filter so as to form a plurality of channels of second signals; and an electrical filter configured to individually receive the second signals, and to perform processing to the second signals so as to acquire a reproduced signal. 1. An optical medium reproducing device configured to optically reproduce an optical medium including a plurality of tracks , the optical medium reproducing device comprising:a light source configured to emit a laser beam;an objective lens configured to irradiate the optical medium with the laser beam;an optical filter configured to receive an incident returned light beam from the optical medium, and to spatially and optically divide the incident returned light beam into a plurality of regions including a plurality of first signals having different bands in a linear density direction and a track density direction with parting lines extending in a tangential direction and a radial direction;an arithmetic unit configured to operate the plurality of first signals formed by the optical filter so as to form a plurality of channels of second signals; andan electrical filter configured to individually receive the second signals, and to perform processing to the second signals so as to acquire a reproduced signal,wherein the electrical filter has a filter characteristic including different amplitude-frequency characteristics and/or phase-frequency characteristics individually with respect to the plurality of signals individually generated ...

OPTICAL DISC MEDIUM AND OPTICAL DISC DEVICE

An optical disc medium includes a land and a groove at which information can be recorded. A predetermined number of address information units which record address information of the land or groove are provided in a circumferential direction of the optical disc medium. The address information unit of the land includes three or more address recording areas capable of recording address information. The address information is recorded on one area selected from among the three or more address recording areas. The address information unit of the land has address information which is recorded, in the same modulation, on the side of the inner adjacent groove and on the side of the outer adjacent groove. The one area to be selected from among the three or more address recording areas for recording the address information of the land is different among three address information units adjacently arranged in a radial direction. 1address information unit which records address information of the land or groove is provided in each of plural regions into which a whole recording area of the optical disc medium is segmented at a predetermined angle in a circumferential direction and in a radial direction,wobbles are formed on the land and the groove, a synchronization area in which specific marks are arranged on plural predetermined fixed positions, and', 'an address information area in which address information wobbles are arranged on plural predetermined fixed positions,, 'the address information unit includes'}the specific mark includes a wobble having a frequency about 1.5 times a frequency of a base wobble having waveform of a predetermined frequency, a wobble having a phase different from a phase of the base wobble by about 180 degree, and a wobble having a frequency about 1.5 times a frequency of the base wobble and having a phase different from a phase of the base wobble by about 180 degree,the address information wobble includes a wobble having a frequency about 1.25 times a ...

OPTICAL DISC MEDIUM AND OPTICAL DISC DEVICE

An optical disc medium includes a land and a groove at which information can be recorded. A predetermined number of address information units which record address information of the land or groove are provided in a circumferential direction of the optical disc medium. The address information unit of the land includes three or more address recording areas capable of recording address information. The address information is recorded on one area selected from among the three or more address recording areas. The address information unit of the land has address information which is recorded, in the same modulation, on the side of the inner adjacent groove and on the side of the outer adjacent groove. The one area to be selected from among the three or more address recording areas for recording the address information of the land is different among three address information units adjacently arranged in a radial direction. 1. An optical disc medium comprising a land and a groove at which information can be recorded , whereina predetermined number of address information units which record address information of the land or groove are provided in a circumferential direction of the optical disc medium,the address information unit of the land includes three or more address recording areas capable of recording address information, the address information is recorded on one area selected from among the three or more address recording areas,the one area to be selected from among the three or more address recording areas for recording the address information of the land is different among three address information units adjacently arranged in a radial direction,wobbles are formed on the land and the groove,the wobbles include a based wobble and an information wobble indicating a predetermined logical value,the address information is recorded with the logical value of the information wobble,the logical value of the information wobble is represented by a waveform having a phase ...

DISK-TYPE RECORDING MEDIUM, RECORDING APPARATUS, RECORDING METHOD, REPRODUCING APPARATUS, AND REPRODUCING METHOD

There is provided a disk-type recording medium, a recording apparatus, a recording method, a reproducing apparatus, and a reproducing method, which are capable of recording, for example, data with high density and reproducing data recorded with high density robustly. In the disk-type recording medium, synchronization patterns for synchronization are recorded in two adjacent tracks with a shift in a track direction so that positions in the track direction do not overlap. The present technology can be applied to, for example, optical discs, other disk-type recording mediums, and the like. 1. A disk-type recording medium , comprising:synchronization patterns for synchronization being recorded in two adjacent tracks with a shift in a track direction so that positions in the track direction do not overlap,wherein the two adjacent tracks are a land and a groove, andwherein an interval of two synchronization patterns arranged in the track direction is unique.2. (canceled)3. (canceled)4. The disk-type recording medium according to claim 1 , wherein claim 1 , when a period of a channel clock of an apparatus that performs at least one of recording or reproducing of the disk-type recording medium is indicated by T claim 1 ,the intervals between the synchronization patterns are different in units of 6T.5. The disk-type recording medium according to claim 1 , wherein user data is encoded into a (d claim 1 ,k) RLL code and recorded claim 1 , andthe synchronization patterns are patterns in which a run larger than a maximum run k of the (d,k) RLL code is repeated.6. The disk-type recording medium according to claim 1 , wherein Run_in indicating a start of an error correction coding (ECC) block including a parity used for an ECC process is recorded claim 1 ,a plurality of the synchronization patterns are included in the Run_in, andthe interval of the two synchronization patterns arranged in the track direction is unique in the Run_in.7. The disk-type recording medium according to ...

OPTICAL INFORMATION RECORDING MEDIUM AND OPTICAL INFORMATION RECORDING MEDIUM REPRODUCING DEVICE

Provided is an optical information recording medium including: a continuously wobbling groove formed in advance by a CAV or a zone CAV. Information is allowed to be recorded on the groove and a land adjacent to the groove, address information is recorded by modulating the wobble, the address information includes a sync pattern indicating a position of the address information and address data, and the sync pattern includes a plurality of first wobble patterns and a second wobble pattern between the first wobble patterns, and at least part of intervals of the first wobble patterns are set to unequal intervals. 1. An optical information recording medium comprising:a continuously wobbling groove formed in advance by a CAV or a zone CANT,wherein information is allowed to be recorded on the groove and a land adjacent to the groove,address information is recorded by modulating the wobble,the address information includes a sync pattern indicating a position of the address information and address data, andthe sync pattern includes a plurality of first wobble patterns and a second wobble pattern between the first wobble patterns, and at least part of intervals of the first wobble patterns are set to unequal intervals.2. The optical information recording medium according to claim 1 , wherein the second wobble pattern is a pattern in which the first wobble pattern is phase-modulated.3. The optical information recording medium according to claim 1 , wherein the first wobble pattern is an MSK mark claim 1 , and the second wobble pattern is a monotone.4. The optical information recording medium according to claim 1 , wherein the intervals of the first wobble patterns change in stages by adding or subtracting a fixed number.5. The optical information recording medium according to claim 4 , wherein the intervals of the first wobble patterns are set to become smaller with increasing proximity to the address data.6. The optical information recording medium according to claim 5 , ...

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 disc device

The optical disc device has a circuit which forms a focus error signal for focus servo control based on reflection light from an optical disc exposed to laser light. Also, the device has a data processing unit which can control by feedback a position to which an objective lens is moved by a focusing actuator based on a focus error signal. In label printing, the data processing unit controls, by feedforward, a position to which the objective lens is moved by the focusing actuator based on control data for label printing. The operation resolution of the focusing actuator in feedforward control is made higher than that in feedback control. Thus, an intended position control accuracy is achieved in feedforward control. For instance, in feedforward control, the gain of the driver circuit for the focusing actuator is switched to a smaller one in comparison to that in feedback control.

OPTICAL DEVICE AND OPTICAL DISC RECORDING OR REPRODUCING METHOD

According to an optical disc, a track, where data is recorded in predetermined block units, is formed by wobbling at a spatial period in accordance with a radial position, and the track is divided into zones in a radial direction. Data is recorded in each of the zones at a predetermined line density based on a ratio n/m of the number of bits of a bit pattern of recording data to one wavelength of wobbling. The optical disc includes a first area having one of the zones, a second area having one of the zones different from the one of the zones in the first area, and a line density of data different from a line density of data in the first area, and a BCA where a zone format identifier specifying a zone table defining a boundary position of each of the zones and the ratio n/m is recorded. 1. An optical disc that a track , where data is recorded in predetermined block units , is formed by wobbling at a spatial period in accordance with a radial position , and the track is divided into a plurality of zones in a radial direction , and that data is recorded in each of the plurality of zones at a predetermined line density based on a ratio n/m (m and n are natural numbers) of a number of bits of a bit pattern of recording data to one wavelength of the wobbling , a first area having at least one of the plurality of zones;', 'a second area having at least one of the plurality of zones different from the at least one of the plurality of zones in the first area, and a line density of data different from a line density of data in the first area; and', 'a Burst Cutting Area (BCA), where a zone format identifier specifying, for each of the plurality of zones, a zone table defining a boundary position of each of the plurality of zones and the ratio n/m of the number of bits, is recorded., 'the optical disc comprising2. The optical disc according to claim 1 , whereinthe first area is a user data area for recording user data,the second area is a non-data area for recording other than ...

OPTICAL DISK RECORDING METHOD, OPTICAL DISK DEVICE, AND INTEGRATED CIRCUIT

A mark corresponding to recording data is formed on an optical disk by: encoding the recording data in accordance with a modulation code and generating encoded data; classifying the encoded data by a combination of at least two of a mark length of a mark, a space length of a preceding space, the mark length of a preceding mark, and the space length of a succeeding space; setting a correction amount for adjusting the position of the start edge and the end edge of a recording pulse based on an evaluation index of a decoding result, which is a result of decoding a reproduction signal of the encoded data, for each of the classification; and generating the recording pulse corresponding to the encoded data by using the correction amount corresponding to the classification of the run length of the encoded data. 117-. (canceled)18. An optical disk recording method for irradiating an optical disk with an optical beam to form a plurality of marks on a medium , and recording information using edge positions of each mark and a space between two adjacent marks , comprising:encoding recording data according to modulation codes to generate binary encoded data corresponding to the mark and the space;regarding run lengths of the mark and the space in the encoded data, if a mark of interest is target mark, classifying the encoded data according to a combination of at least two run lengths of a mark length of the target mark, a space length of a preceding space on a preceding side of the target mark, a mark length of a preceding mark on the preceding side of the target mark, and a space length of a succeeding space on a succeeding side of the target mark;for each classification of the run length of the encoded data, setting individual correction amounts for adjusting positions of a start edge and an end edge of a recording pulse for forming the mark, based on an evaluation index of a decoding result which is obtained when a reproduction signal obtained by reproducing the mark and ...

OPTICAL DISK RECORDING METHOD, OPTICAL DISK APPARATUS, AND OPTICAL DISK MEDIUM

A track of an optical disk is formed by wobbling and divided into zones, a clock ratio of a recording clock to a wobble clock is preset for each zone, a wobble signal is detected from the optical disk, the wobble clock is generated from the wobble signal, a present position is identified by reproducing ADIP indicating a position of the track from the wobble signal and the wobble clock, the recording clock is generated with respect to the wobble clock, a data address present position is identified from the present position, a start end position of the ADIP in a recording target zone, a start end position of the data address in the recording target zone, and the clock ratio, a recording start position is identified based on the data address present position; and the data is recorded from the recording start position of the recording target zone. 1. An optical disk recording method for dividing data into units of predetermined blocks and recording the data in an optical disk medium ,the optical disk medium including a track in which the data is recorded, the track being formed by wobbling and radially divided into a plurality of zones, and a clock ratio n/m (n and m are natural numbers of 1 or more) of a recording clock to a wobble clock being preset for each of the plurality of zones,the optical disk recording method comprising:detecting a wobble signal corresponding to the wobbling from the optical disk medium;generating a wobble clock by multiplying the wobble signal by a predetermined multiplying factor;identifying a present position by reproducing ADIP (ADdress in Progroove) indicating a position of the track from the wobble signal and the wobble clock;generating a recording clock having the clock ratio n/m to the wobble clock;identifying a data address present position from the present position, a start end position of the ADIP in a recording target zone, a start end position of the data address in the recording target zone, and the clock ratio n/m, and ...

Optical disc information device and information processing device

An optical disc information device is an optical disc information device for reproducing and/or recording information with respect to an optical disc including a track in the form of a groove, and capable of recording information in a land portion and in a groove portion of the groove. The optical disc information device includes a laser light source, an objective lens, a transmittance limiting element, a dividing element, a light detector, a central amplifier, at least two end amplifiers, a gain controller, an adder, a reproduction signal processor, and a control signal processor. The transmittance limiting element includes a first central region, and at least two first end regions which interpose the first central region therebetween, and attenuates light passing through at least the first end regions out of a light flux emitted from the laser light source more strongly than light passing through the first central region.

Optical reproducing device, recording medium and tracking method

(57)【要約】 【課題】 ランドグルーブ記録方法において、ランド部 およびグルーブ部に連続して交互に記録した記録マーク を再生することができる光再生装置、トラッキング方法 および記録媒体の提供を目的とする。 【解決手段】 この発明の光再生装置は、グルーブ部ま たはランド部への記録マークの再生をランドグルーブ切 り替え回路３３により所定のタイミングで交互に切り換 えるようにしたので、スパイラル形トラックの終端を通 過することなく、記録方向の次のトラックの接続点で連 続してトラッキングすることができるものである。

Manufacture of heat generating vortex chamber for internal combustion engine

(57)【要約】 【課題】 高密度でデータを記録するために好適な光デ ィスク及びこの光ディスクの為の光ディスク装置を提供 する 【解決手段】 光ディスクＤは、ランド及びグルーブを 記録トラックとしている。各トラックは、１のアドレス セグメントと４５のデータセグメントからなる。アドレ スセグメントは片側にウォブルが施されている。データ セグメントはＤＣグルーブとなっている。アドレスセグ メントには、ＳＹＮＣとフレームアドレスとトラックア ドレスとＣＲＣとからなるアドレス情報と、チルトパタ ーンと、クロックマークとが記録される。クロックマー クは、マークの前後で反射光の光量変化が生じるように なっており、チルトパターンは、他の部分とトラックピ ッチが変えられている。データセグメントには、光磁気 記録でデータが記録される。

Optical recording medium

홈이 형성된 기록층을 갖는 광 기록매체가 개시된다. 기록되지 않은 복수의 트랙의 구조는, 주사장치가 푸쉬풀법에 따라 반경방향의 트랙킹 오차신호를 유도할 수 있도록 하여야 한다. 또한, 기록된 복수의 트랙의 구조는, 주사장치가 고주파 위상 검출법에 따라 반경방향의 트랙킹 오차신호를 유도할 수 있도록 하여야 한다. 이를 위해, 홈의 폭과 깊이는 각각, 파장을 기록매체를 주사하는데 사용된 방사빔의 개구수로 나눈 값의 0.3 내지 0.6배의 범위와, 파장을 굴절률로 나눈 값의 1/24 내지 1/7배의 범위를 갖는다. 복수의 기록된 마크 사이에 있는 트랙 상의 영역으로부터 반사된 방사빔과 마크로부터 반사된 방사빔 사이의 위상차는 0.4 내지 2.0 라디안의 범위를 갖는다. An optical recording medium having a grooved recording layer is disclosed. The structure of the plurality of unrecorded tracks should allow the scanning device to derive the radial tracking error signal in accordance with the push-pull method. In addition, the structure of the plurality of recorded tracks should allow the scanning device to induce a radial tracking error signal in accordance with the high frequency phase detection method. To this end, the width and depth of the grooves range from 0.3 to 0.6 times the wavelength divided by the numerical aperture of the radiation beam used to scan the recording medium, and 1/24 to 1/1 of the wavelength divided by the refractive index. It has a range of 7 times. The phase difference between the radiation beam reflected from the area on the track between the plurality of recorded marks and the radiation beam reflected from the mark ranges from 0.4 to 2.0 radians. 광 기록매체, 트랙킹 오차, 푸쉬풀법, 위상 검출법, 주사장치, 위상차, 기록층 Optical record carrier, tracking error, push pull method, phase detection method, scanning device, phase difference, recording layer

Reproducing apparatus and recorded medium

作为一在播放专用光盘即DVD-ROM中的密码化的主数据和包含用以译解该DVD-ROM中的密码的密钥信息及表示该盘是播放专用的识别信息的控制信息一起被复制到一次性写的光盘即DVD-R的主记录区域中时的对策，将包含无效的密钥信息和表示该盘为可一次写的识别信息的控制信息记录到DVD-R的副记录区域中，并且使该DVD-R的主记录区域的轨迹以规定的间距蛇行。本发明的DVD播放装置中，把激光头(42)向DVD-R的内周方向移动，直到蛇行检测电路(70)不再从跟踪误差信号(Ste)中检测出其蛇行频率由DVD-R(10)的主记录区域的轨迹蛇行的蛇行间距和规定的线速度来决定的信号成分的那一位置。这样以来，能够检索到DVD-R中位于内周部分的副记录区域中的真正的控制信息。

Reproducing apparatus and recorded medium

재생 전용 광디스크인 DVD-ROM 중의 암호화된 주 데이터가, 당해 DVD-ROM 중의 암호해독을 위한 열쇠정보와 당해 디스크가 재생 전용임을 나타내는 식별정보를 포함하는 제어정보와 함께, 추기형 광디스크인 DVD-R의 주 기록영역에 복제된 경우의 대책을 강구하도록, 무효 열쇠정보와 당해 디스크가 추기형임을 나타내는 식별정보를 포함하는 제어정보를 DVD-R의 부 기록영역에 기록해 두고, 또 당해 DVD-R의 주 기록영역의 트랙을 소정 피치로 사행시켜 둔다. DVD 재생장치는, 사행 검출회로(70)가 트랙킹 에러신호(Ste) 중에 DVD-R(10)의 주 기록영역 중 트랙의 사행에 관한 피치와 일정한 선 속도로 결정되는 사행주파수를 갖는 신호성분을 검출하지 않게 될 때까지, 광 픽업(42)을 DVD-R의 안쪽으로 이송시킨다. 이로써 DVD-R 안쪽에 위치하는 부 기록영역 안의 참 제어정보가 검색된다. The encrypted main data in the DVD-ROM, which is a reproduction-only optical disc, is DVD-R, which is a recordable optical disc, together with control information including key information for decryption in the DVD-ROM and identification information indicating that the disc is for reproduction only. In order to take countermeasures when the data is copied to the main recording area of the recording medium, control information including invalid key information and identification information indicating that the disc is write-once is recorded in the sub-recording area of the DVD-R. The track of the main recording area is meandered at a predetermined pitch. The DVD player includes a signal component having a meandering frequency determined by the meandering detection circuit 70 at a constant line speed and a pitch regarding meandering of the track in the main recording area of the DVD-R 10 during the tracking error signal Ste. The optical pickup 42 is moved inside the DVD-R until it is not detected. As a result, the true control information in the sub-recording area located inside the DVD-R is retrieved.

Optical Recording Medium And Apparatus For Driving The Same

본 발명은 워블드 피트(Wobbled Pit)열 구조를 갖는 광기록매체 및 그 구동장치에 관한 것이다. The present invention relates to an optical recording medium having a wobbled pit array structure and a driving apparatus thereof. 본 발명의 광기록매체는 정보신호에 대응하여 형성되며 일정주기로 연속적으로 또는 간헐적으로 워블링된 피트열이 트랙을 이루고, 인접한 피트열이 서로 반전된 위상을 갖게끔 워블링된 것을 특징으로 한다. The optical recording medium of the present invention is characterized in that it is formed in correspondence with an information signal and is wobbled so that the pit rows wobbed continuously or intermittently at regular intervals form a track, and adjacent pit rows have inverted phases. 본 발명의 광 기록매체 구동장치는 일정주기로 연속적으로 또는 간헐적으로 워블링된 피트열이 트랙을 이루고, 인접한 피트열이 서로 반전된 위상을 갖게끔 워블링된 광 기록매체에 광빔을 조사하는 집광수단과, 반경방향으로 다분할된 광검출편으로 구성되며 상기 광 기록매체에서 반사된 광량을 검출하여 광전변환하는 광검출수단과, 상기 광검출수단에 의해 검출된 적어도 4개의 광검출신호로부터 트랙킹 에러신호를 검출하는 트랙킹 에러 검출수단과, 상기 트랙킹 에러신호에 기초하여 상기 광빔의 트랙킹 제어를 수행하는 트랙킹 제어수단을 구비하는 것을 특징으로 한다. In the optical recording medium driving apparatus of the present invention, a light converging means for irradiating a light beam to a wobbling optical recording medium such that the pit rows wobbling continuously or intermittently at regular intervals form a track, and adjacent pit rows have an inverted phase. And light detecting means for detecting and photoelectrically converting the amount of light reflected from the optical recording medium, and a tracking error from at least four light detecting signals detected by the light detecting means. Tracking error detecting means for detecting a signal and tracking control means for performing tracking control of the light beam based on the tracking error signal. 본 발명에 의하면 인접한 피트열(트랙)이 서로 상반된 위상을 갖고 워블링되도록 형성됨으로써 특정파장의 광스폿에 대하여 트랙피치를 좁게하여 기록밀도를 대폭 향상시킬 수 있게 된다. According to the present invention, the adjacent pit rows (tracks) are formed to be wobbled with phases opposite to each other, so that the track pitch can be narrowed with respect to the light spot having a specific wavelength, thereby greatly improving the recording density.

Rewritable data storage medium

재기록가능한 데이터 저장매체(1)는 트랙킹 구조(8)를 구비한 재기록가능한 기록층(9)을 갖는다. 상기한 기록층(9)은 데이터 기록 영역(5)을 갖는다. 데이터 기록 영역(5) 이외의 식별 마크 영역(4, 4')에 소거가능한 식별 마크가 존재한다. 데이터 기록 영역(5)은 제 1 트랙킹 구조(8')를 갖는 한편, 식별 마크 영역(4, 4')은 트랙킹 구조를 거의 갖지 않거나, 제 1 트랙킹 구조(8')와 다른 제 2 트랙킹 구조(8")를 갖는다. 따라서, 레코더의 소거 스폿의 위치가 반경방향으로 정밀하게 제어될 수 없기 때문에, 식별 마크의 소거가 실질적으로 불가능하다.

Optical information storage medium and method of reproducing/recording information from/onto the same

재생 전용의 광정보 저장 매체가 개시되어 있다. 이 개시된 광정보 저장매체는, 다수개의 영역을 가진 재생 전용의 광정보 저장매체에 있어서, 상기 다수개의 영역들 사이의 각 영역 중 적어도 한 영역에 전이영역이 구비되는 것을 특징으로 한다. 상기 구성에 의해, 재생 전용의 광정보 저장매체에서 데이터 재생시 에러 발생률을 저하시키고, 전이영역에 대한 표준을 제시함으로써 저장매체간의 호환성을 확보할 수 있다.

Repairing work for inner wall of tunnel

(57)【要約】 【課題】 単純かつ精確な光学式変位センサ用の目標造 作を形成する方法を提供すること。 【解決手段】 入射光ヒ゛ームを生成する固定光源を備えた 可動物体の変位を測定するための装置。目標造作が、物 体に取り付けられ、入射光ヒ゛ームを反射し、該目標造作に 近接して光源の第1のイメーシ゛を形成する。イメーシ゛ンク゛レンス゛ が、第1のイメーシ゛を受容し、該第1のイメーシ゛を光源の第2のイ メーシ゛として光検出器上に再形成する。光検出器は、物体 から隔置され、第2のイメーシ゛を受容し、光検出器上におけ る第2のイメーシ゛の受容位置に比例すると共に物体の位置を 表す特性(振幅等)を有する電気信号を生成する。目標造 作は、光源の小さな点状又は線状のイメーシ゛が形成されて 光検出器上に第2のイメーシ゛として再集束されるよう光ヒ゛ーム を反射する曲面を有している。該変位センサ装置はテ゛ィスクト゛ ライフ゛のサーホ゛システムの用とで特に有用なものとなる。目標造 作は、物体の表面に溝を刻むことにより形成される。

Small size optical disc

본 발명은 소형의 광 디스크에 관한 것으로 본 발명에 따른 광 디스크는 적어도 하나의 데이터 기록층을 포함하고, 제1 기록 단위와, 상기 제1 기록 단위보다 길이가 긴 제2 기록 단위의 두 가지 기록 단위로 데이터가 기록되는 광 디스크에 있어서, 상기 제2 기록 단위의 길이와 동일한 원주 길이를 갖는 반경을 경계로 상기 데이터 기록층이 제1 기록 단위 영역과 제2 기록 단위 영역으로 나뉘고, 상기 제1 기록 단위 영역에는 상기 제1 기록 단위로 데이터가 기록되고, 상기 제2 기록 단위 영역에는 상기 제2 기록 단위로 데이터가 기록된 것을 특징으로 한다. 본 발명에 따르면, 정보저장매체의 크기가 작아지더라도 필요한 모든 정보를 기록할 수 있고, 특히 하나의 ECC 블록이 복수의 트랙에 걸쳐 기록되어 디스크의 반경 방향으로 겹쳐지는 영역의 발생으로 인한 에러정정능력의 감소를 방지하여 신뢰성있게 정보의 기록 및/또는 재생이 가능하다.

Optical recording medium

정보의 재생시 파형 왜곡이 없는 판독 신호를 제공할 수 있는 광학 기록 매체. 광학 기록 매체는 정보 데이터를 수반하는 정보 피트가 형성되는 그루브 정보 트랙, 및 그루브 정보 트랙에 연결된 복수의 미리 형성된 랜드 프리피트가 제공된 랜드 프리피트 트랙을 포함한다. 상기 그루브 정보 트랙과 상기 랜드 프리피트 트랙은 교대로 배열된다. 상기 그루브 정보 트랙은 랜드 프리피트가 존재하지 않는 구간보다 랜드 프리피트가 존재하는 각 구간의 적어도 일부에서 더 좁은 트랙 폭을 갖는다.

Optical medium and Information Recording/Reproducing Apparatus and Method Using the same

본 발명은 고주파신호에 영향을 주는 워블신호를 제거하도록 한 광 기록매체에 관한 것이다. The present invention relates to an optical recording medium for removing a wobble signal that affects a high frequency signal. 본 발명의 광기록 매체는 트랙의 밑변이 워블드됨과 아울러 윗변이 워블드되지 않은 제 1 워블링영역과, 트랙의 윗변이 워블드됨과 아울러 밑변이 워블드되지 않은 제 2 워블링영역을 구비하며, 제 1워블링영역 및 제 2워블링영역은 트랙방향 및 폭 방향으로 교번됨과 아울러 제 1워블링영역의 어드레스 정보를 제 2워블링영역의 어드레스 정보로 이용한다. The optical recording medium of the present invention has a first wobbling area in which the bottom side of the track is wobbled and the top side is not wobbled, and a second wobbling area in which the top side of the track is wobbling and the bottom side is not wobbled. The first wobbling area and the second wobbling area are alternated in the track direction and the width direction, and the address information of the first wobbling area is used as the address information of the second wobbling area. 본 발명에 의하면, 밑변이 워블링되어 있는 제 1 워블링영역과, 윗변이 워블링되어 있는 제 2 워블링영역을 교번적으로 프리포맷 함으로써 워블신호가 포함되지 않은 순수한 고주파신호를 얻을 수 있다. According to the present invention, pure high frequency signals without wobble signals can be obtained by alternately preformatting the first wobbling region where the bottom side is wobbling and the second wobbling region where the top side is wobbling.

Frequency demodulation circuit, optical disk device, and pre-formatting device

주파수 복조 회로, 광 디스크 및 워블 그루브로서 기록된 어드레스 정보를 재생하기 위해 비트 0 및 비트 1을 디코드하는 디코더를 갖는 프리포맷 장치에 있어서, 펄스 신호의 에지의 검출과 함께, 디코더는 펄스 신호의 비트 패턴에 대응하는 제1 및 제2 윈도우 펄스 생성 회로 및 에지 검출 신호가 제1 및 제2 윈도우 펄스 출력 타이밍에 대응하는 경우 일치 신호를 획득하기 위한 일치 신호 검출 회로를 포함한다. 그 다음, 디코더는 최종 출력이 디지탈 1인지 0인지를 판정하여 감소된 신호의 파형이 결함으로 인해 산만하고 불안정하더라도, 디지탈 1 또는 디지탈 0이 윈도우 펄스를 이용함으로써 정확하게 식별될 수 있다. 어드레스 정보의 만족스런 획득을 허용하는 어드레스 정보 ADM의 1 및 0의 접합점에서 워블 신호 시간축을 따라 지터의 발생을 크게 감소시키기도 하는 신호 주파수 변조에 따라 그루브 진폭을 유동시킴으로써 어드레스 정보 ADM의 1 및 0에 대한 접합점인 그루브 워블의 제로 교차점의 경사의 변화의 발생을 막을 수 있다. 2상 비트의 오버샘플링 클럭 신호는 데이터 클럭 신호의 주파수 대 2상 비트의 오버샘플링 클럭 신호의 주파수의 정수비로, 데이터 클럭 신호의 주파수 분할에 의해 생성된다. 복조가 데이터 및 어드레스 양자에 대한 클럭 신호를 이용하여 데이터 시스템에서 단일 위상 록 루프 회로로 달성되기 때문에, 구성은 매우 단순하게 만들어질 수 있다. 위상 정보를 갖는 재생 신호 마크의 극성에 의해, 광 디스크를 스캐닝하는 빔이 랜드 위에 있는지 그루브 위에 있는지를 판정하여, 빔이 랜드 또는 그루브 위에 있다는 것을 나타내는 위상 정보의 용이한 식별과 획득을 가능케 한다. 위상 정보를 포함하는 마크는, 고정확도의 (위상 ) 위치 정보를 획득하기 위해 마크를 용이한 프리모맷을 위해, 시간축 방향에 대해 절단 빔 쌍의 온 오프 제어에 의해 유일하게 베이스 디스크 표면 상에 형성된다.

Method for calculating a track pitch on writable medium

본 발명은, 기록 가능 매체의 트랙 피치 연산방법에 관한 것으로, 디스크의 선속도와, 디스크의 리드아웃 영역 시작위치까지의 절대시간정보(ATIP)를 각각 산출 및 승산하여, 트랙의 전체 길이를 연산한 후, 그 트랙의 전체 길이에 근거하여, 트랙의 피치를 연산함으로써, 트랙 점프 동작 없이도, CD-R 또는 CD-RW 등과 같은 기록 가능 매체의 트랙 피치를 간단하고 신속하게 연산할 수 있게 되는 매우 유용한 발명인 것이다. The present invention relates to a track pitch calculation method of a recordable medium, and calculates and multiplies the linear speed of a disc and absolute time information (ATIP) up to the start position of the lead-out area of the disc, respectively, to calculate the total length of the track. Then, by calculating the pitch of the track based on the total length of the track, it is possible to calculate the track pitch of a recordable medium such as a CD-R or a CD-RW, simply and quickly, without a track jump operation. It is a useful invention.

Optical recording medium

Optical information storage medium and apparatus of reproducing/recording information from/onto the same

재생 전용의 광정보 저장 매체가 개시되어 있다. Disclosed is an optical information storage medium dedicated to reproduction. 이 개시된 광정보 저장매체는, 다수개의 영역을 가진 재생 전용의 광정보 저장매체에 있어서, 상기 다수개의 영역들 사이의 각 영역 중 적어도 한 영역에 전이영역이 구비되는 것을 특징으로 한다. The disclosed optical information storage medium is a reproduction-only optical information storage medium having a plurality of areas, characterized in that a transition area is provided in at least one of the areas between the plurality of areas. 상기 구성에 의해, 재생 전용의 광정보 저장매체에서 데이터 재생시 에러 발생률을 저하시키고, 전이영역에 대한 표준을 제시함으로써 저장매체간의 호환성을 확보할 수 있다. With this arrangement, it is possible to ensure the compatibility between storage media by reducing the error occurrence rate when data is reproduced in the optical information storage medium dedicated to reproduction, and presenting a standard for the transition area.

Rewritable data storage medium

재기록가능한 데이터 저장매체(1)는 트랙킹 구조(8)를 구비한 재기록가능한 기록층(9)을 갖는다. 상기한 기록층(9)은 데이터 기록 영역(5)을 갖는다. 데이터 기록 영역(5) 이외의 식별 마크 영역(4, 4')에 소거가능한 식별 마크가 존재한다. 데이터 기록 영역(5)은 제 1 트랙킹 구조(8')를 갖는 한편, 식별 마크 영역(4, 4')은 트랙킹 구조를 거의 갖지 않거나, 제 1 트랙킹 구조(8')와 다른 제 2 트랙킹 구조(8")를 갖는다. 따라서, 레코더의 소거 스폿의 위치가 반경방향으로 정밀하게 제어될 수 없기 때문에, 식별 마크의 소거가 실질적으로 불가능하다. The rewritable data storage medium 1 has a rewritable recording layer 9 with a tracking structure 8. The recording layer 9 has a data recording area 5. There are erasable identification marks in the identification mark areas 4 and 4 'other than the data recording area 5. The data recording area 5 has a first tracking structure 8 ', while the identification mark areas 4, 4' have little or no tracking structure, or a second tracking structure different from the first tracking structure 8 '. (8 "). Therefore, since the position of the erasing spot of the recorder cannot be precisely controlled radially, erasing of the identification mark is substantially impossible. 저장매체, 기록층, 식별 마크, 트랙킹 구조, 소거, 복제방지 Storage medium, recording layer, identification mark, tracking structure, erasure, copy protection

Optical recording media

一种在信息再现期间可以产生消除波形失真的读信号的光记录介质。该光记录介质包括在其上形成载有信息数据信息坑的凸槽信息轨道，以及带有一些预先形成的与该凸槽信息轨道相连的凸区预置坑的凸区预置坑轨道。可交替排列凸槽信息轨道和凸区预置坑轨道。凸槽信息轨道在至少其中存在凸区预置坑的每个区域的一部分中的轨道宽度要比不存在凸区预置坑的区域的轨道宽度要小。

Optical disk information device and information processing device

This optical disk information device is provided with: a laser light source for emitting a light flux of wavelength (λ); an object lens with a numerical aperture (NA); a splitting element; a photodetector; a central amplifier; at least two terminal amplifiers; an adder; a control signal processor having a tracking switcher for inverting the polarity of a tracking control signal in accordance with whether a track scanned by a condensing spot is a land part or a groove part; and a gain controller for switching the gains of the central amplifier and the terminal amplifiers when the polarity of the tracking control signal has been inverted, and in addition, for setting the gain of the central amplifier substantially lower than the gain of at least one of the terminal amplifiers so as to reduce crosstalk from adjacent tracks of the optical disk. The present invention satisfies (Gp/2) < (1.2•λ)/(2•NA), where Gp is the groove interval of the optical disk.

CARRIER RECORDING, REPEATING TOOLS AND METHODS FOR RECORDING INFORMATION

Optical information recording medium

An optical information recording medium, which is not deteriorated after repeating reading out and writing in, is provided by forming a glass thin film (2), on a substrate (1), and providing a recording film, a protective film, and a reflecting film thereon. The thin glass film (1) has non-linear intensity distributions of irradiated and transmitted light. The glass contains cobalt oxide.

Record carrier, playback device and method of recording information

기록매체는 거의 평행한 복수의 트랙을 갖고, 이 트랙은 제 1 물리 파라미터의 제 1 변화와 트랙의 제 2 물리 파라미터의 제 2 변화를 나타낸다. 제 1 변화는 기록매체 상에 기록된 정보를 표시하고, 이 정보는 제어가능한 형태의 데이터 처리를 사용하여 복원될 수 있다. 제 2 변화의 변조 패턴은 상기한 형태의 데이터 처리를 제어하기 위한 코드를 표시한다. 변조 패턴을 포함하는 코드 트랙에 대해, 좌측의 인접한 트랙에서의 변조 패턴(41, 44)이 우측의 인접한 트랙에서의 변조 패턴(43, 46)에 맞추어 정렬된다. 이에 따라, 제 2 변환에 기인한 누화가 줄어들고, 적어도 2개의 트랙은 동일한 변조 패턴을 갖는다. 재생장치는, 적어도 2개의 트랙으로부터 코드를 검색하기 위한 복조기와 제어부(56)를 갖는다. 기록매체, 재생장치, 물리 파라미터, 변조 패턴, 편위 The record carrier has a plurality of substantially parallel tracks, which tracks the first change in the first physical parameter and the second change in the second physical parameter of the track. The first change indicates the information recorded on the recording medium, which information can be restored using data processing in a controllable form. The modulation pattern of the second change represents a code for controlling the data processing of the above-described form. For code tracks that include a modulation pattern, modulation patterns 41 and 44 in the adjacent tracks on the left are aligned with modulation patterns 43 and 46 in the adjacent tracks on the right. Thus, crosstalk due to the second transform is reduced and at least two tracks have the same modulation pattern. The playback device has a demodulator and control section 56 for searching for codes from at least two tracks. Recording media, playback devices, physical parameters, modulation patterns, deviations

Optical disc having a double track structure, and data recording and reproducing method in optical disc device

본 발명은, 이중 트랙 구조를 갖는 광디스크와, 광디스크 장치에서의 데이터 기록 및 재생방법에 관한 것으로, 이중 트랙 구조를 갖는 광디스크에 대한 데이터 기록방법에 있어서, 상기 광디스크의 제1 트랙에 제1 데이터를 기록하는 1단계; 및 상기 광디스크의 제2 트랙에 제2 데이터를, 상기 제1 데이터와 동기화되게 기록하는 2단계를 포함하여 구성되고, 또한 이중 트랙 구조를 갖는 광디스크의 서로 다른 트랙에 동기화되어 기록된 제1 및 제2 데이터를 재생하는 방법에 있어서, 상기 광디스크의 제1 트랙에 기록된 제1 데이터를 독출하여 임시 저장하는 1단계; 상기 제2 트랙에 기록된 제2 데이터를 독출하는 2단계; 및 상기 임시 저장된 제1 데이터와 독출된 제2 데이터를 서로 동기화되게 신호 처리하는 3단계를 포함하여 구성되어, 이중 트랙 구조를 갖는 광디스크의 양 트랙에 서로 관련된 데이터를 동기화하여 기록하고, 이렇게 기록된 양 데이터를 동시 재생할 수 있게 되는 매우 유용한 발명이다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc having a double track structure and a data recording and reproducing method in an optical disc apparatus. In the data recording method for an optical disc having a double track structure, first data is written to a first track of the optical disc. 1 step of recording; And recording the second data on the second track of the optical disc in synchronization with the first data, and recording the first data and the second track in synchronization with different tracks of the optical disc having a dual track structure. 2. A method of reproducing data, comprising: a first step of reading and temporarily storing first data recorded on a first track of an optical disc; Reading out second data recorded on the second track; And three steps of signal-processing the temporarily stored first data and the read out second data to be synchronized with each other, by synchronizing and recording data related to each other on both tracks of the optical disc having a dual track structure, It is a very useful invention that can simultaneously reproduce both data. 광디스크 장치, DVD, 광디스크, 트랙, 이중 트랙 Optical Disc Device, DVD, Optical Disc, Track, Dual Track

High Density Optical Disks and Manufacturing Method Thereof

본 발명은, 광디스크상에 광빔을 조사함에 따라 읽혀지는 정보가 저장된 광디스크에 있어서, 랜드상에 깊이가 0.25λ이고 폭이 0.5λ인 정보저장피트가 존재하는 랜드트랙들과, 상기 랜드트랙들 사이에 위치하며 인접한 랜드트랙에 인해 발생되는 크로스 톡이 최소화될 수 있는 깊이의 그루브가 형성되어 있으며 상기 그루브상에 상기 정보저장피트와 같은 깊이와 폭을 가지는 정보저장피트가 존재하는 그루브트랙들로 구성하며, 인접트랙간의 트랙피치는 상기 크로스톡이 최소화될 수 있는 길이를 가지며 상기 그루브트랙간의 피치는 상기 트랙피치의 2배임을 특징으로 한다.

Optical disk recording method, optical disk device, and integrated circuit

A mark corresponding to recording data is formed on an optical disk by: encoding the recording data in accordance with a modulation code and generating encoded data; classifying the encoded data by a combination of at least two of a mark length of a mark, a space length of a preceding space, the mark length of a preceding mark, and the space length of a succeeding space; setting a correction amount for adjusting the position of the start edge and the end edge of a recording pulse based on an evaluation index of a decoding result, which is a result of decoding a reproduction signal of the encoded data, for each of the classification; and generating the recording pulse corresponding to the encoded data by using the correction amount corresponding to the classification of the run length of the encoded data.

Optical recording medium and recording method thereof

본 발명은 고밀도 광디스크에서 다수의 반복 기록으로 인한 인접트랙의 정보를 열화를 방지할 수 있는 광 기록 매체와 그 기록 방법에 관한 것이다. 본 발명의 광 기록 매체는 트랙들에 데이터가 연속적으로 기록되는 데이터 기록 영역과, 한 트랙씩을 건너뛰어 데이터가 기록되는 파일 관리 영역을 구비한다. 본 발명의 광 기록 매체 기록 방법은 데이터가 기록될 위치가 데이터 기록 영역인가 아니면 파일 관리 영역인가를 식별하는 제 1 단계와, 1단계에서 데이터 기록 영역으로 판별된 경우 트랙들에 데이터를 연속적으로 기록하는 제 2 단계와, 1단계에서 파일 관리 영역으로 판별된 경우 한 트랙씩을 건너뛰어 데이터를 기록하는 제 3 단계를 포함한다. 본 발명에 의하면, 파일 관리 영역은 랜드 전용 기록 또는 그루브 전용 기록을 하여 데이터가 기록된 트랙간의 거리를 넓힘으로써, 다수의 반복 기록시에도 인접트랙의 정보 열화를 방지할 수 있다.

Optical record carriers and optical disc devices

큰 기록 용량을 달성하는 광학 기록 매체가 제공된다. 이러한 광학 기록 매체는 약 0.3 내지 1.2nm 범위의 두께를 갖는 열가소성 수지로 형성된 베이스, 베이스 상에 형성된 안내 홈, 안내 홈 상에 연속적으로 형성된 적어도 반사막 및 상-변화 기록층, 및 약 3 내지 177㎛ 범위의 두께를 갖는 광 투과층을 포함한다. 이러한 광학 기록 매체에서, 광 투과층 두께의 불균일도(Δt)는 이하 범위로 설정된다. An optical recording medium is provided which achieves a large recording capacity. Such an optical recording medium includes a base formed of a thermoplastic resin having a thickness in the range of about 0.3 to 1.2 nm, a guide groove formed on the base, at least a reflective film and a phase-change recording layer continuously formed on the guide groove, and about 3 to 177 mu m. It includes a light transmitting layer having a thickness in the range. In such an optical recording medium, the nonuniformity? T of the thickness of the light transmitting layer is set in the following range. Δt ≤ ± 5.26 (λ/N.A. 4 )(㎛) Δt ≤ ± 5.26 (λ / NA 4 ) (μm) 여기서, N.A.는 광학 디스크 기록 및/또는 재생 장치의 광학 헤드 소자의 개구수를 나타내고, λ 는 광학 디스크 기록 및/또는 재생 장치에 의해 이용되는 레이저광의 파장을 나타낸다. Here, N.A. represents the numerical aperture of the optical head element of the optical disc recording and / or reproducing apparatus, and λ represents the wavelength of the laser light used by the optical disc recording and / or reproducing apparatus.

Optical recording media

一种光记录介质设计成在重现信息时产生没有波形失真的读取信号。此光记录介质形成有准备在其上形成携带信息数据的数据坑点的信息轨迹以及预先形成有很多预置坑点的预置坑点轨迹。每个信息轨迹与每个预置坑点轨迹被设置成彼此相邻，而且以至少其底部与相邻的信息轨迹隔开的方式形成每一个预置坑点。

Optical recording medium, method for recording/preproducing the optical recording medium and apparatus for recording/reproducing the optical recording medium

Optical disk having radial lands and grooves, and boundary recognition marks, and optical disk apparatus for emitting a light beam to an optical disk having a plurality of error correction blocks after boundary recognition marks

An optical disk used for writing and reading data in units of an error correction block containing a plurality of sectors by means of a light beam and comprising land and groove tracks arranged adjacent to one another and a plurality of emboss pits formed on a boundary between the land and the groove tracks to detect respective positions of the error correction blocks.

Recording medium, address recording method/apparatus and data recording-reproducing method/apparatus

Optical information storage medium and method for reproducing data from the same

광정보 저장매체가 개시되어 있다. An optical information storage medium is disclosed. 이 개시된 광정보 저장매체는, 사용자 데이터가 기록되는 사용자 영역; 상기 사용자 영역의 내주쪽에 구비되고, 제1 트랙피치를 가지는 제1영역과 상기 제1 트랙피치와 다른 제2 트랙피치를 가지는 제2영역을 가지는 리드인 영역; 및 상기 사용자 영역의 외주쪽에 구비된 리드아웃 영역을 포함한다 The disclosed optical information storage medium includes a user area in which user data is recorded; A lead-in area provided on an inner circumference of the user area and having a first area having a first track pitch and a second area having a second track pitch different from the first track pitch; And a lead out area provided at an outer circumference of the user area. 상기와 같이 저장매체 관련 정보 영역 또는 복사 방지 정보 영역과 같은 중요한 정보가 기록되는 영역의 트랙피치를 그 외의 다른 영역의 트랙피치보다 크게 구성하여 중요한 정보를 재생하는데 있어서 인접 트랙의 크로스토크 등으로 인한 신호의 열화없이 신뢰성있는 데이터 재생이 가능하도록 한 것이다. As described above, the track pitch of an area in which important information such as a storage medium-related information area or a copy protection information area is recorded is larger than that of other areas. It is to enable reliable data reproduction without signal deterioration.

Optical Disc Of Land/Groove recording Type And Apparatus For Recording and Reproducing Data thereon

본 발명은 산의 트랙과 골의 트랙의 변이부분이 정확히 검출되도록 한 산/골 기록방식 광디스크에 관한 것이다. The present invention relates to a hill / valley recording type optical disc in which the shift portion of a mountain track and a valley track is accurately detected. 본 발명에 따른 산/골 기록방식의 광디스크는 상기 산과 골의 트랙 변이위치에 대응하는 동기신호 영역 상에 상기 산과 골의 트랙 변이위치를 지시하기 위한 트랙 변이정보가 기록된다. In the mountain / gol recording type optical disc according to the present invention, track shift information for indicating the track shift position of the hill and the valley is recorded on a synchronization signal area corresponding to the track shift position of the hill and the valley.

Optical disc, recording apparatus and method for optical disc, and its reproducing method

The present invention provides an optical disc recording method of irradiating an optical beam to an optical disc including a basal plate made of synthetic resin which has a concavo-convex pattern formed in advance on one surface thereof, and a reflective coat made of metal which is formed over the concavo-convex pattern on the basal plate, to physically change the concavo-convex pattern so as to record identification data.

Optical disc and optical disc address reading apparatus and method

An optical disc having marks for dispersed addresses that can be easily detected with high precision. A dispersed address comprises synchronization marks, positive marks, and negative marks. Synchronization marks, positive marks, and negative marks are formed along a groove as partial discontinuities or partial modifications in the wobbled groove.

Optical disc, optical disc recording method and reproducing method

Optical recording medium

An optical recording medium is designed to generate a read signal free from waveform distortion during reproduction of information. The optical recording medium is formed with information tracks on which data pits carrying information data is to be formed, and prepit tracks previously formed with a plurality of prepits. Each of the information tracks and each of the prepit tracks are positioned adjacent to each other, and each of the prepits is formed to be spaced apart from adjacent information tracks in at least its bottom part.

Recording medium

A format of a recording medium suitable for a larger capacity, a higher transfer rate, and integration of pits/lands/grooves is provided. In a first method, in a recordable and reproduceable area, a twin-track structure of lands/grooves is configured such that tracks on which lands become recording tracks and tracks on which grooves become recording tracks form a double spiral. In a read-only area, pits are arrayed such that tracks in the radial direction of the disk are formed in a data area. In a second method, in a recordable and reproduceable area, a land/groove-alternate track structure is configured such that grooves become data recording tracks in the circular track next to the circular track in which lands become data recording tracks, and lands become data recording tracks in the next circular track. In the read-only area, pits are arrayed such that tracks in the radial direction of the disk are formed in the data area.

Optical disk and optical disk address reading device and method

提供一种能高精度、简单地进行检测的附加有分散地址用标记的光盘。用同步标记、正标记、负标记构成分散地址。使摆动的凹槽一部分不连续,或者一部分变形,沿着凹槽形成同步标记、正标记、负标记。

Optical disk and optical disk device

Recording medium having track formed of land portion and groove portion, and reproducing apparatus therefor

AN OPTICAL REPRODUCING APPARATUS ACOORDING TO THE PRESENT INVENTION INCLUDES A LAND/GROOVE SWITCHING CIRCUIT FOR ALTERNATELY SWITCHING REPRADUCTION OF A RECORD MARK ON A GROOVE PORTION (G) AND A LAND PORTION (L). THIS ALLOWS A TRACKING OPERATION TO BE CARRIED OUT CONTINUOUSLY AT A CONNECTION POINT TO A SUBSEQUENT TRACK IN THE RECORDING DIRECTION WITHOUT A LASER BEAM FROM AN OPTICAL PICKUP (2) PASSING THROUGH AN END OF A SPIRAL TRACK. A RECORDING MEDIUM (1) ACCORDING TO THE PRESENT INVENTION INCLUDES A RECORDING TRACK FORMED OF A GROOVE PORTION (G) AND A LAND PORTION (L), AND A RECORD MARK USED FOR SWITCHING A TRACKING OPERATION SO THAT A LIGHT BEAM EMITTED FROM THE OPTICAL PICKUP (2) SHOULD BE IRRADIATED ALTERNATELY ON THE GROOVE PORTION (G) AND THE LAND PORTION (L). WHEN THE RECORD MARK IS DETECTED, A TRACK JUMP OPERATION IS CARRIED OUT, AND INFORMATION IS REPRADUCED FROM THE GROOVE PORTION (G) AND THE LAND PORTION (L) ALTERNATELY.FIGURE 6

Optical data carrier and address reading device and method for optical data carriers

Optical recording carrier, and apparatus and process for exploring an optical recording carrier

"PORTADOR DE GRAVAçãO óPTICA, E, APARELHO E PROCESSO PARA EXPLORAR UM PORTADOR DE GRAVAçãO óPTICA". Um portador de gravação óptica (1) é munido de trilhas tendo uma ranhura (4) ondulada numa direção radial e posições predeterminadas (18) ao longo da trilha. Microcavidades gravadas em relevo (19) nas posições predeterminadas, representam informações de endereçamento. A fase da ondulação próxima às posições predeterminadas depende do fato da presença de uma microcavidade (19) sobre uma posição predeterminada ou não (20).

Optical disc , optical disc address reading apparatus and method and optical disc reproducing device

提供一种从具有沿轨迹形成的摆动凹槽的信息载体再现信息信号的再现装置，其中利用信息信号以下面所述的方式调制摆动凹槽，摆动凹槽包含正标记和负标记，其中分别将一个或多个正标记用于指示逻辑“1”或“0”，一个或多个负标记用于指示逻辑“0”或“1”，所述再现装置包括：可操作以用于接收从信息载体读取的信号的输入终端；可操作以用于从该信号检测正标记和负标记的检测器；可操作以用于根据正标记信号和负标记信号产生1和0的产生器；和可操作以用于将从所述产生器产生的所述1和0转换成地址信号的转换器。

Optical recording medium, method for recording/reproducing the optical recording medium and apparatus for recording/reproducing the optical recording medium including a wobbled groove

An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits. The rotation of the optical recording medium is controlled by the wobbled signals detected from the groove and the position on the optical recording medium of the recording signal is detected by the pit signal detected from the pits.

Motor control device and method, disk device and disk access method

Optical information storage medium and method of reproducing/recording information from/onto the same

재생 전용의 광정보 저장 매체가 개시되어 있다. Disclosed is an optical information storage medium dedicated to reproduction. 이 개시된 광정보 저장매체는, 다수개의 영역을 가진 재생 전용의 광정보 저장매체에 있어서, 상기 다수개의 영역들 사이의 각 영역 중 적어도 한 영역에 전이영역이 구비되는 것을 특징으로 한다. The disclosed optical information storage medium is a reproduction-only optical information storage medium having a plurality of areas, characterized in that a transition area is provided in at least one of the areas between the plurality of areas. 상기 구성에 의해, 재생 전용의 광정보 저장매체에서 데이터 재생시 에러 발생률을 저하시키고, 전이영역에 대한 표준을 제시함으로써 저장매체간의 호환성을 확보할 수 있다. With this arrangement, it is possible to ensure the compatibility between storage media by reducing the error occurrence rate when data is reproduced in the optical information storage medium dedicated to reproduction, and presenting a standard for the transition area.

Optical disc, optical disc reproducing method and apparatus, and optic disc recording method

一种光盘重放方法，包括如下步骤：读取记录在装入设备的光盘中的标识数据；和根据所读取的标识数据，判断所述光盘是否是具有至少一个第一和第二记录区、沿着第一记录区的内缘形成的第一导入区、沿着第一记录区的外缘形成的第一导出区、在第一导出区的外缘并在第一导出区与第二记录区之间形成的第二导入区、和沿着第二记录区的外缘形成第二导出区的光盘，如果判断是该类型的光盘，从第二记录区中开始重放。

DISPLAY DEVICE AND RECORDED MEDIUM

Record carrier, reproducing apparatus and method for recording information

Recorder

In a recorder, a pit gain selection circuit (33) converts the amplitude corresponding to the pit length data into gain data and outputs the gain data to a pit recording signal generating circuit (39) through a timing regulation circuit (35). The generating circuit (39) selects the gain data corresponding to the pit signal length and converts it into an analog signal. A groove correction value selection circuit (41) converts the pit length data into a groove correction value and outputs it to a groove correction signal generating circuit (47) through a timing regulation circuit (45). The generating circuit (47) finds a groove signal correction value and converts it into an analog signal and outputs the analog signal to a subtracter (51). The subtracter (51) subtracts the analog signal sent from the generating circuit (47) from an analog signal from a D/A converter (49). The power corresponding to the power superposed upon a groove recording beam is cancelled only when a pit is cut by the side lobe of a pit recording beam. Thus, a recorder which enables production of an optical disc from which appropriate signals of the pits and grooves can be obtained at the time of reproduction even if physical high density recording is performed is provided.

Optical disc, optical disc reproducing method and apparatus, and recording method

본 발명은, 광디스크의 재생방법이며, 장치에 장착된 광디스크에 기록된 식별데이터를 독출하고, 독출된 식별데이터에 의거해서 장착된 광디스크가 적어도 제 2기록영역과 제 2기록영역을 갖고, 제 1기록영역의 내주측에 제 1리드인영역이 설치되고, 제 1기록영역의 외주측에 제 1리드아웃영역이 설치되고, 제 1리드아웃영역의 외주측에서 제 2기록영역과의 사이에 제 2리드인영역이 설치되고, 제 2기록영역의 외주측에 제 2리드아웃영역이 설치된 광디스크인 것으로 판별된 때에는, 장착된 광디스크의 제 2기록영역에서 재생을 개시한다.

Optical disc and optical disc drive

一种光盘和用于该光盘适于高密度记录数据的光盘驱动器。光盘D使用凸台和凹槽作为记录轨迹。每一个轨迹包括一个地址段和45个数据段。地址段在其一侧被摆动。每一个数据段是一个DC凹槽。地址段记录一个包括同步信号、帧地址、轨迹地址和CRC、倾斜图案和时钟标记的地址信息。时钟标记被采用,将激光束反射为标记之前的一个光量和标记之后的一个光量。倾斜图案具有与其它区域不同的轨迹间距。地址段磁－光地记录数据。

Optical disk recording method, optical disk device and integrated circuit

通过如下操作在光盘介质上形成与记录数据相对应的标记：根据调制码对记录数据进行编码以生成编码数据；对于编码数据中的标记和间隔的游程长度，根据目标标记的标记长度、前间隔的间隔长度、前标记的标记长度、以及后间隔的间隔长度中的至少两个游程长度的组合，对编码数据进行分类；对于每种分类，基于解码结果的评价指标来设置用于调整记录脉冲的开始边缘和结束边缘的位置的校正量，所述解码结果是使用PRML方式的最大似然解码对编码数据的再现信号进行解码的结果；通过使用与编码数据的游程长度的分类相对应的校正量，来生成与编码数据相对应的记录脉冲；以及用所述记录脉冲以多个级改变光束功率，并且用光束照射光盘。

Optical disc recording medium, optical disc apparatus and recording method

グルーブトラック（１０５，１０７）のアドレス情報以外の部分のウォブリングの周期の整数倍がグルーブトラック（１０５，１０７）の一周の長さと一致し、アドレス情報の周期の整数倍が前記グルーブトラック（１０５，１０７）の一周の長さと一致し、アドレス情報中の隣接するグルーブトラック（１０５，１０７）間で異なる情報は、隣接するグルーブトラック（１０５，１０７）で少なくとも異なる所定のウォブルパターンによって記録されている。 The integral multiple of the wobbling period of the portion other than the address information of the groove track (105, 107) matches the length of one round of the groove track (105, 107), and the integral multiple of the period of the address information is the groove track (105, 107). 107) Information that coincides with the length of one round and is different between adjacent groove tracks (105, 107) in the address information is recorded in a predetermined wobble pattern that is at least different between adjacent groove tracks (105, 107). .

Record carrier, playback device and method of recording information

optical recording media

본 발명은 상기한 랜드 프리 피트(land pre-pit)를 이용한 광디스크의 고배속 기록에 있어서 기록 후에 어드레싱 능력을 향상시킬 수 있는 기록용 광디스크를 제공하기 위한 것으로서, 랜드 프리 피트의 프리 피트 싱크 코드 비트를 포함하며 상대 주소 비트와 사용자 데이터 비트로 이루어지고, 랜드 프리 피트의 첫 번째 피트, 두 번째 피트 및 마지막 피트 각각의 피트의 길이를 LP1, LP2, LP3라고 함에 있어서, 랜드 프리 피트의 존재와 트랙의 주기(Track pitch)를 Tp라 하면 2Tp≥LP1>LP2≥LP3을 만족하도록 랜드 프리 피트를 형성하는데 있다. SUMMARY OF THE INVENTION The present invention provides a recording optical disc capable of improving addressing capability after recording in high-speed recording of an optical disc using the land pre-pit. The length of each pit of the first, second and last feet of the land free pit, LP1, LP2, LP3, including the presence of the land free pit and the period of the track. If (Track pitch) is Tp, land pre-pits are formed so as to satisfy 2Tp≥LP1> LP2≥LP3. DVD-R/RW, LPP, 광디스크 DVD-R / RW, LPP, Optical Disc

High-density playback-only optical disc

가. 청구범위에 기재된 발명이 속한 기술분야: 광디스크 나. 발명이 해결하려고 하는 기술적 과제: 재생전용형 광디스크에 기존의 시스템을 사용하면서도 광디스크 기판의 구조를 개선하여 고밀도 기록재생을 가능하게 하는 고밀도 광디스크를 제공한다. 다. 그 발명의 해결방법의 요지: 본 발명은 광디스크에 있어서, 광디스크의 매 트랙마다 웨이브형태의 그루브를 트랙을 따라가며 연속되게 형성하고 상기 그루브에 정보용 피트를 형성시켜 매트랙마다 피트만으로 형성된 트랙피치보다 협트랙피치에도 정보를 재생하도록 함을 특징으로 하는 고밀도 재생전용 광디스크이다. 라. 발명의 중요한 용도: 고밀도 재생전용 광디스크

Optical disc and optical disc device

Optical disk and optical disk address reading device and method

An optical disc having marks for dispersed addresses that can be easily detected with high precision. A dispersed address comprises synchronization marks, positive marks, and negative marks. Synchronization marks, positive marks, and negative marks are formed along a groove as partial discontinuities or partial modifications in the wobbled groove.

Method of protection of optical media, such as CDs and DVDs against unauthorised copying and a non-standard optical audio disc and video disc with protection against loading and playing in personal computers and matrices for making thereof

Subject-matter is that between an inner edge and an outer edge of a lead-in area, are created by mechanical means grooves in the form of concentric circles around the central axis with the profile of the letter “V” in the protective layer, wherein these grooves have peaks and edges are created in such a way that the groove with the largest possible diameter of the circle does not exceed the inner part of the outer edge and the groove with the smallest possible diameter of the circle does not exceed the inner edge of the lead-in area, wherein the density of the grooves is such that edges of the grooves are touching each other on the surface of the protective layer and between the individual edges of the grooves there is no area undamaged by the grooves. Non-standard audio discs and video discs are manufactured by pressing from the matrix, they contain lead-in area data area and lead-out area and in the area with the radius from 18.00+1 mm to 23.50+1 mm are provided with the zone of the mechanical protection, which contains a set of grooves in the form of concentric circles, with the profile of the letter “V”, which are arranged closely to each other in such a way, that their upper edges are touching.

AN OPTICAL RECORDING CARRIER AND AN APPLIANCE AND A METHOD FOR EXPLORING IT

Un portador de grabacion optico (1) está provisto con pistas que tienen una ranura (4) oscilante en direccion radial y posiciones predeterminadas (18) a lolargo de la pista. Los hoyos estampados (19) en posiciones predeterminadas representan informacion de direccionado. La fase de la oscilacion cerca deposiciones predeterminadas depende si un hoyo está presente (19) en una posicion predeterminada o no (20). An optical recording carrier (1) is provided with tracks that have a radially oscillating groove (4) and predetermined positions (18) along the track. Stamped holes (19) in predetermined positions represent addressing information. The phase of the oscillation near predetermined depositions depends on whether a hole is present (19) in a predetermined position or not (20).

Optical disc and optical disc address reading apparatus and method

An optical disk attached with marks capable of being detected with a high accuracy and simplicity and used for scattered addresses. A scattered addres s comprises a synchronous mark, positive mark and negative mark which are form ed along a groove by making a wobbling groove discontinuous partly or deforming it partly.

Apparatus and method for recording and / or playing data on an optical disc

사용자 데이터를 광학 디스크에 기록하거나 광학 디스크로부터 재생하기 위한 광학 디스크 장치가 개시된다. Disclosed is an optical disc apparatus for recording user data on or reproducing from an optical disc. 본 장치는 파장이 약 680(nm) 이하인 레이저빔을 광학 디스크로 조사하기 위한 광 헤드를 구비하며, 광 헤드는 개구수(NA)가 0.7 이상이고 작동 거리가 약 560(㎛)이하인 렌즈를 구비한다. 이 장치를 활용함으로써, 상대적으로 많은 양의 데이터가 광학 디스크에 기록될 수 있다. The apparatus includes an optical head for irradiating a laser beam with a wavelength of about 680 (nm) or less with an optical disk, and the optical head has a lens having a numerical aperture (NA) of 0.7 or more and an operating distance of about 560 (μm) or less. do. By utilizing this apparatus, a relatively large amount of data can be recorded on the optical disc.

Method for calculating track pitch and searching data in optical disk

본 발명은 광 기록 매체 구동 방법에 관한 것으로, 보다 상세하게는 광 기록 매체에 기록된 데이터를 정확하게 읽을 수 있도록 하는 트랙 피치 계산 방법 및 계산된 트랙 피치에 의해 목표 데이터로 정확하게 이동하여 데이터를 읽을 수 있도록 하는 데이터 서치 방법에 관한 것이다. 광 기록 매체에서 데이터 서치 방법은 광 기록 매체 구동 방법에 있어서, (a) 상기 광 기록 매체로부터 반사되어 나오는 광 신호에 의해 현재 픽업의 위치 및 목표 픽업의 위치를 비교하여 상기 픽업의 이동 방향 및 트랙 수를 계산하고 픽업의 이동 여부를 판단하는 단계, (b) 기 저장된 프레임 수에 의해 계산된 트랙 피치 값을 이용하여 상기 목표 위치로의 상기 픽업의 이동량을 계산하고 계산된 이동량 만큼 상기 픽업을 이동시키는 단계를 포함한다. 본 발명에 따르면, 프레임 수를 계산하여 트랙 피치 값을 계산하여 데이터 리드 시에 서치 동작을 원할히 수행할 수 있으며, 기준 스펙을 따지 못하는 광 기록 매체의 경우에도 본 발명을 적용하여 효과적으로 대응할 수 있다.

Reproduction-only optical recording medium

파장이 λ인 광픽업의 레이저 광에 대해 투명한 기판의 적어도 어느 한 면에 나선구조로 형성되며, 상기 기판의 표면높이로 형성된 다수의 랜드와, 상기 랜드에 대해 소정 깊이로 인입 형성되며 상기 랜드와 교대로 배치된 다수의 그루브 및, 상기 랜드 및/또는 그루브에 형성된 다수의 피트를 가지는 트랙을 포함하여 된 재생전용 광기록매체가 개시되어 있다. 이 개시된 재생전용 광기록매체는, 상기 기판의 굴절률을 n 이라하고, λ e = λ/n 이라하며, 초점크기 변수 ξ= λ/(광픽업의 대물렌즈의 개구수)라 할 때, 상기 랜드와 그루브의 높이차이가 0.15λ e 이상이고, 상기 피트의 폭(PW)과, 서로 인접한 상기 랜드와 상기 그루브 사이의 중심선간의 거리인 트랙피치(TP)가 아래의 조건식을 만족하는 것을 특징으로 한다. [조건식]

RECORD CARRIER, PLAYBACK AND METHOD FOR RECORDING INFORMATION

RECORDING SUPPORT, PLAYBACK DEVICE AND INFORMATION RECORDING METHOD.

Soporte de grabación que comprende pistas fundamentalmente paralelas - que presentan primeras variaciones de un primer parámetro físico de la pista, representando las primeras variaciones información grabada en el soporte de grabación, y - que presentan segundas variaciones de un segundo parámetro físico de la pista, - en el que, en relación con una pista (42) que muestra dichas segundas variaciones, un patrón de modulación de las segundas variaciones del segundo parámetro físico de la pista (41) adyacente de la izquierda está alineado con un patrón de modulación de las segundas variaciones del segundo parámetro físico de la pista (43) adyacente de la derecha del soporte de grabación, caracterizado porque la información representada por las primeras variaciones puede recuperarse por medio de un tipo controlable de procesamiento de datos, un patrón de modulación de las segundas variaciones en una pista de código representa un código para controlar dicho tipo de procesamiento de datos, y laspistas mencionadas que presentan las segundas variaciones está separadas entre sí mediante áreas intermedias que no constituyen pistas. Recording medium comprising fundamentally parallel tracks - which have first variations of a first physical parameter of the track, representing the first variations of information recorded on the recording medium, and - which present second variations of a second physical parameter of the track, - wherein, in relation to a track (42) showing said second variations, a modulation pattern of the second variations of the second physical parameter of the adjacent track (41) on the left is aligned with a modulation pattern of the second variations of the second physical parameter of the track (43) adjacent to the right of the recording medium, characterized in that the information represented by the first variations can be recovered by means of a controllable type of data processing, a modulation pattern of the second variations in a code track ...

Information recording medium, information recording method, information recording device, information reproducing method, and information reproducing device

Optical recording medium, method for recording/reproducing the optical recording medium and apparatus for recording/reproducing the optical recording medium

An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove (1) and pits (2) formed at a pre-set interval in an area between turns of the wobbled groove (1). The recording/reproducing method includes controlling (21-23) rotation of the optical recording medium by a wobbled signal from the groove (1) and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits (2). The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove (1) and a detection device for detecting pit signals from the pits (2). The rotation of the optical recording medium is controlled by the wobbled signals detected from the groove (1) and the position on the optical recording medium of the recording signal is detected by the pit signal detected from the pits (2).

Optical disc and optical disc address regarding apparatus and method

An optical disc having marks for dispersed addresses that can be easily detected with high precision. A dispersed address comprises synchronization marks, positive marks, and negative marks. Synchronization marks, positive marks, and negative marks are formed along a groove as partial discontinuities or partial modifications in the wobbled groove.

Optical record medium

FIELD: optical record media. SUBSTANCE: optical record medium has parallel tracks for recording user s information in the form of combination of optically detected labels, tracks being provided with control information. Tracks are grouped in pairs of adjacent tracks. Control information is identical in both tracks of pair and different in tracks of different pairs. EFFECT: reduced impact of cross distortions on adjacent tracks. 9 cl, 5 dwg

Tracking control method and apparatus

PURPOSE: A method and a device for controlling tracking, are provided to stably perform tracking control for an optical disk in a land/groove recording system, without discriminating a land/groove. CONSTITUTION: The first BPF(Band Pass Filter)(42) extracts the first wobbling signal(WS1) formed in outer circumference of a land/groove track, and the second BPF(44) extracts the second wobbling signal(WS2) formed in inner circumference of the land/groove track. An adder(46) adds the first and the second wobbling signals(WS1,WS2), to generate an addition signal(SM). A subtracter(48) subtracts the second wobbling signal(WS2) from the first wobbling signal(WS1), to generate a difference signal(SS). A mixer(50) multiplies the addition signal(SM) and the difference signal(SS), to detect a tracking error signal(ETe). A tracking controller(54) performs tracking control, based on the tracking error signal(ETe).

Information recording method, information recording/reproducing apparatus and information recording medium

本发明的信息记录方法包括利用带有存放于盘盒中可记录重放信息的媒体是否曾从盘盒中取出过这种履历信息的识别部，判定媒体是否曾取出过的履历判定步骤和检验步骤，当判定结果表明曾取出过时，媒体属于要求在用盘盒状态下记录的第一种记录重放用信息媒体时，通常或只要满足规定条件，在向媒体记录信息后验证所记录信息的正确性，或检查媒体缺陷后，在该媒体上记录信息，或者禁止记录，媒体属于不一定要求在用盘盒状态下记录的第二种记录重放用信息媒体时，便进行通常记录。

Record carrier, reproducing apparatus and information recording method

Optical information recording medium and optical information recording medium playback device

The present invention provides an optical information recording medium in which continuously wobbling grooves are formed by CAV or zone CAV in advance, and which is formed to allow information to be recorded in the grooves and lands adjacent to the grooves, wherein address information is recorded by modulating wobbles, the address information includes a sync pattern indicating the position of the address information and address data, the sync pattern has a plurality of first wobble patterns and a plurality of second wobble patterns between the plurality of first wobble patterns, and at least a part of intervals of the first wobble patterns are not uniform.

Record carrier, playback device and method of recording information.

Optical recording medium wobble signal recorded thereon, wobble signal recording apparatus and recording method thereof

본 발명은 광 기록매체, 워블신호 기록장치 및 워블신호 기록방법에 관한 것이다. 본 발명에 따른 광 기록매체에는 헤더 정보가 변조되어 실려있으며 주기가 기록마크의 단위주기에 대한 배수인 워블신호가 기록되어 있다. 이에 의해, 헤더 정보를 용이하게 추출할 수 있음과 동시에 안정된 클럭신호를 얻을 수 있다. The present invention relates to an optical recording medium, a wobble signal recording apparatus and a wobble signal recording method. In the optical recording medium according to the present invention, header information is modulated and a wobble signal whose period is a multiple of a unit period of a recording mark is recorded. As a result, the header information can be easily extracted and a stable clock signal can be obtained.

Phase change optical disk

Dedicated optical disk for high density reproducing

(57)【要約】 【課題】 従来の再生専用型のディジタルビデオディス ク再生装置でも再生可能なトラック構造を有する高密度 光ディスクを提供する。 【解決手段】 各トラックに沿い連続的に形成される波 形状の複数グルーブ６と、グルーブ６に形成される複数 の情報用ピット４とを備えてなり、各トラックごとに情 報用ピット４のみを有する光ディスクのトラックピット Ｐより狭いトラックピットＰでも、情報の再生を可能に することを特徴とする。

Optical recording medium, method for recording/reproducing the optical recording medium and apparatus for recording/reproducing the optical recording medium including a wobbled groove

An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits. The rotation of the optical recording medium is controlled by the wobbled signals detected from the groove and the position on the optical recording medium of the recording signal is detected by the pit signal detected from the pits.

Optical Disc Of Land/Groove recording Type And Apparatus For Recording and Reproducing Data thereon

본 발명은 산의 트랙과 골의 트랙의 변이부분이 정확히 검출되도록 한 산/골 기록방식 광디스크에 관한 것이다. 본 발명에 따른 산/골 기록방식의 광디스크는 상기 산과 골의 트랙 변이위치에 대응하는 동기신호 영역 상에 상기 산과 골의 트랙 변이위치를 지시하기 위한 트랙 변이정보가 기록된다.

Optical disc and optical disc address reading apparatus and method

提供一种能高精度、简单地进行检测的附加有分散地址用标记的光盘。用同步标记、正标记、负标记构成分散地址。使摆动的凹槽一部分不连续，或者一部分变形，沿着凹槽形成同步标记、正标记、负标记。

Optical disc recording method, optical disc device and integrated circuit

Optical recording medium, recording apparatus and method for optical recording medium

在本发明中，根据第2数据使由根据被记录的第1数据形成的多个坑和坑间的坑间表面构成的光道的多个坑变形来记录，合成该第1与第2数据来重放，由此，可实现频带宽的声频重放，再者利用现有的盘重放装置可对第1数据进行重放。此外，可利用第2数据进行第1数据的重放的控制，谋求被记录的数据的保护。

A deep groove high density optical disc preventing it from reversing the phase of tracking error signal

PURPOSE: An optical disk with deep groove-high density is provided for a recording/reproducing apparatus to correctly decide a land track and a groove track while precisely tracking a target track. CONSTITUTION: Header information on header areas of each sector of a land track, and header information on header areas of each sector of a groove track are detected as opposite codes in tracking. Herein, the header information is recorded in deep bits, which is deeper than pits of a groove along a row separated from a mirror field. In recording header information in a header area, the header information are recorded after being separated. Thus, first and second header information is recorded on a left side of the mirror field based on a progressing direction of an optical spot. Third and fourth information are recorded on a right side of the mirror field.