WO2005069283A1 - 情報記録装置及び方法、並びにコンピュータプログラム - Google Patents
情報記録装置及び方法、並びにコンピュータプログラム Download PDFInfo
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- WO2005069283A1 WO2005069283A1 PCT/JP2005/000530 JP2005000530W WO2005069283A1 WO 2005069283 A1 WO2005069283 A1 WO 2005069283A1 JP 2005000530 W JP2005000530 W JP 2005000530W WO 2005069283 A1 WO2005069283 A1 WO 2005069283A1
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
- G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
- G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
- G11B2020/1228—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc middle zone or outer guard area of a multilayer disc
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1267—Address data
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1277—Control data, system data or management information, i.e. data used to access or process user data for managing gaps between two recordings, e.g. control data in linking areas, run-in or run-out fields, guard or buffer zones
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1288—Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1291—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting serves a specific purpose
- G11B2020/1294—Increase of the access speed
- G11B2020/1297—Increase of the access speed wherein the focus is on the write access speed
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1291—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting serves a specific purpose
- G11B2020/1298—Enhancement of the signal quality
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
- G11B2220/215—Recordable discs
- G11B2220/216—Rewritable discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/23—Disc-shaped record carriers characterised in that the disc has a specific layer structure
- G11B2220/235—Multilayer discs, i.e. multiple recording layers accessed from the same side
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
- G11B2220/2566—DVDs belonging to the minus family, i.e. -R, -RW, -VR
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
Definitions
- the present invention relates to a technical field of an information recording device and method, such as a DVD recorder, and a computer program.
- L0 layer By focusing the recording laser beam on the “L0 layer”, information is recorded on the L0 layer by irreversible change recording method such as heating or rewritable method, and then through L0 layer etc. Then, by focusing the laser beam on a recording layer (referred to as “L1 layer” in this application as appropriate) located on the back side of the L0 layer when viewed from the laser beam irradiation side, information on the L1 layer is obtained. Is recorded in an irreversible change recording method by heating or in a rewritable method.
- a technique of performing recording or reproduction on the L0 layer and the L1 layer by an “opposite method” or the like is also disclosed, wherein the “opposite method” refers to, for example, a method for recording between two recording layers. This is a recording or reproducing method in which the direction of the track path is reversed.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2000-311346
- Patent Document 2 Japanese Patent Publication No. 2001-23237
- an interlayer jump (interlayer switching) is performed in a data area of the L0 layer and the L1 layer in which actual data such as content is written, rather than in a buffer area. )
- There is a bonding error between the two layers, etc. so that a relatively long time is required in the search by the laser light from the optical pickup to access the desired position.
- a link is directly made to the actual data recorded in the data area of the L0 layer and the L1 layer. There is a technical problem that this may cause the signal quality of the linked actual data to deteriorate.
- the present invention has been made in view of the above-described problems, and for example, information can be efficiently recorded on each recording layer of a multilayer information recording medium, and the recording time has been reduced. It is an object to provide an information recording device and method, an information recording / reproducing device and method, and a computer program for causing a computer to function as such an information recording device.
- an information recording device comprises at least a pair of first and second recording layers stacked and a first and second recording layer. Buffers to prevent the recording or playback position for the recording layer from moving out of the unrecorded area For a disc-shaped information recording medium in which a recording area is arranged at a position adjacent to the recording areas of the first and second recording layers, the first part of the information to be recorded is written on the inner peripheral side of the information recording medium.
- an information recording / reproducing apparatus has a reading unit capable of reading the first and second portions from the first and second recording layers. And a reproducing means for reproducing the read first and second portions, wherein the control means comprises: (I) the first recording layer from the first recording layer along the first track path. The first part of the buffer area of the first recording layer is read, and then the first buffer data of the predetermined amount is read in a part of the buffer area of the first recording layer. In part, while reading the predetermined amount of the second buffer data, a search is made for any one of the corresponding address, the semi-corresponding address and the first searched address, and any of the searched addresses is searched for. Along the second track path based on the address To start reading the serial second portion, so as to reproduce the read first and second portions which controls said reading means, for controlling the reproducing device.
- an information recording method comprises a structure in which at least a pair of first and second recording layers are laminated and the first and second recording layers are laminated.
- a disk in which a buffer area for preventing a recording or reproduction position for a recording layer from deviating to an unrecorded area is arranged at a position adjacent to the recording area of the first and second recording layers.
- the first part of the information to be recorded on the information recording medium in the form of a mark is directed from one of the inner and outer peripheral sides of the information recording medium to the other side along the first track path.
- the second recording layer is writable on the first recording layer, and the recording direction is turned back so that the second part of the information to be recorded is transferred along the second track path from the other side to the one side.
- An information recording method in an information recording device comprising a writing means capable of writing data to a first recording layer, wherein (I) writing the first portion to the first recording layer along the first track path; At a part of the buffer area of the first recording layer, a predetermined amount of first buffer data is written to the first recording layer along the first track node, and the first recording layer is moved from the second recording layer to the second recording layer.
- an information recording / reproducing method includes the steps of: connecting the first and second parts to an information recording apparatus according to claim 3; An information recording / reproducing method in an information recording / reproducing apparatus further comprising: reading means capable of reading from the first and second recording layers; and reproducing means for reproducing the read first and second portions. (I) reading the first portion from the first recording layer along the first track path, and then reading the predetermined amount of the first buffer in a part of the buffer area of the first recording layer.
- a computer program according to claim 16 of the present invention provides a recording control for controlling a computer provided in the information recording apparatus according to claim 1.
- a computer program for controlling the computer. A step and at least a part of the writing means.
- FIG. 1 is a schematic plan view (FIG. 1 (a)) showing the basic structure of an optical disc having a plurality of recording areas according to an information recording medium to be recorded in a first embodiment of the information recording apparatus of the present invention
- FIG. 1 is a schematic cross-sectional view of the optical disc and a schematic conceptual diagram of a recording area structure in a radial direction thereof associated with the optical disc (FIG. 1 (b)).
- FIG. 2 is a block diagram of an information recording / reproducing device according to a first embodiment of the information recording device of the present invention.
- FIG. 3 shows a data structure of a two-layer optical disc according to an information recording medium to be recorded in a first embodiment of the information recording apparatus of the present invention, a physical sector number constituting an ECC block in a recording area of the optical disc, and FIG. 3 is a conceptual graph showing a recording or reproducing method of an optical disc by an opposite method.
- FIG. 4 is a schematic conceptual diagram showing an operation outline of the information recording / reproducing apparatus according to the first embodiment of the information recording apparatus of the present invention.
- FIG. 5 is a schematic conceptual diagram showing an operation principle of writing buffer data in a middle area of an optical disc and performing an interlayer jump by the information recording / reproducing apparatus according to the first embodiment of the information recording apparatus of the present invention ( FIG. 5 (a)) and a schematic graph diagram (FIG. 5 (b)) showing transition of sector numbers at the time of an interlayer jump.
- FIG. 6 is a schematic structural diagram showing a specific example of a link structure along a track path at a linking position in a sector by the information recording / reproducing device according to the first embodiment of the information recording device of the present invention (FIG. 6 (a)) and a schematic conceptual diagram (FIG. 6 (b)) showing a position where this link is performed.
- FIG. 7 is a schematic structural diagram showing a specific example of a link structure in a direction opposite to a track path at a linking position in a sector by the information recording / reproducing device according to the first embodiment of the information recording device of the present invention. (Fig. 7 (a)) and a schematic conceptual diagram (Fig. 7 (b)) showing the position where this link is made.
- FIG. 8 is a schematic conceptual diagram (FIG. 8 (a)) showing an operation outline of an information recording / reproducing apparatus according to a specific example of a comparative example, and an information recording / reproducing apparatus according to another specific example of a comparative example. Overview of the operation FIG. 8 is a schematic conceptual diagram (FIG. 8 (b)).
- FIG. 9 is a schematic conceptual diagram showing an operation principle of writing buffer data in a middle area of an optical disk and performing an interlayer jump by an information recording / reproducing apparatus according to a second embodiment of the information recording apparatus of the present invention ( FIG. 9 (a)) and a schematic graph diagram (FIG. 9 (b)) showing transition of sector numbers at the time of an interlayer jump.
- FIG. 10 is a schematic conceptual diagram showing an operation principle of writing buffer data in a middle area of an optical disk and performing an interlayer jump by an information recording / reproducing apparatus according to a third embodiment of the information recording apparatus of the present invention ( FIG. 10 (a)) and a schematic graph diagram (FIG. 10 (b)) showing transition of sector numbers at the time of an interlayer jump.
- An embodiment according to the information recording apparatus of the present invention is characterized in that at least a pair of first and second recording layers is laminated, and a recording or reproduction position for the first and second recording layers is not recorded in an unrecorded area.
- a recording or reproduction position for the first and second recording layers is not recorded in an unrecorded area.
- a buffering area for preventing the recording area from coming off is arranged at a position adjacent to the recording areas of the first and second recording layers.
- Part can be written to the first recording layer along a first track path from one side of the inner and outer sides of the information recording medium to the other side, and the recording direction is folded back to perform the recording.
- the target disc-shaped information recording medium includes, for example, at least a pair of a first recording layer (eg, L0 layer) and a second recording layer.
- a first recording layer eg, L0 layer
- a second recording layer e.g. the L1 layer
- buffer areas such as middle areas are provided for the first and second recording layers for performing recording from the first recording layer to the second recording layer or for performing an interlayer jump of the reproduction position. It has it in a predetermined part of two recording layers.
- the “buffer area” according to the present invention is arranged at a position adjacent to a recording area in which information such as data is recorded, and the first and second areas are arranged.
- a writing unit such as an optical pickup or the like writes information to be recorded.
- the first part is directed from one side of the inner and outer sides of the disc-shaped information recording medium to the other side, and is recorded on the first recording layer along the first track path.
- the recording direction is turned back, and the second part of the information to be recorded is recorded on the second recording layer along the second track path from the other side to one side. Is done.
- the writing means performs the first and second predetermined amounts.
- the first portion of the content or the like is recorded on the first recording layer, and subsequently, a predetermined amount of the first buffer data according to the present invention is written in a part of the buffer area of the first recording layer.
- the predetermined amount of buffering data is dummy data for buffering different from actual data having a predetermined information amount.
- a predetermined amount of the second buffer data according to the present invention is stored in one of the buffer areas of the second recording layer. The second portion is recorded in the second recording layer while being written in the portion.
- the first and second portions which are the actual data, are not linked to each other. Since a link is generated for the first and second buffer data written in a part of the second buffer area and the second buffer area, an interlayer jump of the first and second parts, which is actual data, during a recording or reproducing operation. It is possible to almost or completely eliminate the deterioration of the signal quality due to this. At the time of the interlayer jump during the recording operation, a predetermined amount of the first and second buffer data that does not cover the entire buffer area of the first and second recording layers is written in a part of the buffer area. Therefore, the time required for the entire interlayer jump can be significantly reduced.
- a link is not likely to be generated for the first and second parts as the actual data during the recording operation by the writing unit. Since a link is generated with respect to the first and second buffer data written in a part of the first and second buffer areas, the first and second parts, which are actual data, are recorded in the recording or reproducing operation. The It is possible to almost or completely eliminate the degradation of signal quality due to the jump.
- the link is made to the first and second parts that are the actual data. Although it does not occur, it increases the time required for the entire interlayer jump.
- the first and second predetermined amounts of the first and second recording layers do not cover the entire buffer area. Since buffer data is partially written in the buffer area, the time required for the entire interlayer jump can be significantly reduced.
- control means writes the predetermined amount of first buffering data to the first recording layer, and controls the buffering of the first recording layer.
- the writing means is controlled so as to end in a predetermined recording unit including a physical address in a part of the recording area.
- the writing unit writes the predetermined amount of the first buffering data to the first recording layer, and writes the predetermined amount of the first buffering data to one of the buffering areas of the first recording layer.
- the process ends in a predetermined recording unit including the physical address.
- the physical address is, specifically, a physical sector number.
- the predetermined recording unit is, specifically, an ECC block having a predetermined amount of information.
- control means writes the predetermined amount of the second buffer data to the second recording layer by writing a portion of the buffer area of the second recording layer corresponding to the physical address.
- the writing means may be configured to be controlled so as to start from a predetermined recording unit including the corresponding address in.
- the writing unit writes the predetermined amount of the second buffer data to the second recording layer in the second recording layer corresponding to the physical address. It starts from a predetermined recording unit including the corresponding address in a part of the buffer area.
- the corresponding address is position information having a complement relation with the physical address of the buffer area of the first recording layer. Therefore, it is easy to logically manage these physical addresses and corresponding addresses.
- the control means searches the corresponding address after writing the predetermined amount of the first buffer data in the first recording layer, and based on the searched corresponding address, The writing means may be controlled so as to write a predetermined amount of the second buffer data.
- the writing means can search for a desired corresponding address to perform a more accurate interlayer jump.
- control means writes the predetermined amount of the second buffering data to the second recording layer by using a part of the buffering area of the second recording layer corresponding to the physical address.
- the writing means may be controlled so as to start from a predetermined recording unit including a quasi-corresponding address of the chopstick located on the one side with respect to the corresponding address in the above.
- the writing unit starts, for example, from the quasi-corresponding address located on the inner peripheral side by "1" ECC block (16 sectors) from the searched corresponding address. Start writing. Therefore, a smooth and efficient recording operation along the first and second track paths can be performed.
- control means searches the semi-corresponding address after writing the predetermined amount of the first buffer data in the first recording layer, and based on the searched semi-corresponding address.
- the writing means may be configured to control the writing means so as to write the predetermined amount of the second buffer data.
- the writing unit can search for a desired quasi-corresponding address to perform a quicker interlayer jump.
- control means first recognizes the writing of the predetermined amount of the second buffer data to the second recording layer in a part of the buffer area of the second recording layer.
- the writing unit may be controlled to start from a predetermined recording unit including an address to be written.
- the writing unit writes the predetermined amount of the second buffer data to the second recording layer in one of the buffer areas of the second recording layer.
- the unit starts from a predetermined recording unit including an address recognized first. Therefore, a search operation is not required, so that a faster and more efficient recording operation can be performed.
- the control unit writes the first recognized address in a predetermined area (RMA, middle area, or the like) in at least one of the first and second recording layers so as to write the address. It may be configured to control the means.
- the writing unit writes the first recognized address to, for example, an RMA (Recording Management Area) in at least one of the first and second recording layers.
- RMA Recording Management Area
- writing is performed in a predetermined area such as a middle area. Therefore, by acquiring the first recognized address written in the predetermined area in advance, it is possible to perform a quick, accurate, and efficient recording operation.
- control means sets the last address at which the recording of a part of the buffer area of the first recording layer is completed to a predetermined area (RMA) in at least one of the first and second recording layers. , A middle area, etc.).
- RMA predetermined area
- the writing unit writes the last address in a predetermined area such as an RMA or a middle area in at least one of the first and second recording layers. . Therefore, it is possible to perform a quick, accurate, and efficient recording operation by acquiring the last address where recording of a part of the buffer area of the first recording layer has been completed in advance. It becomes.
- control unit may control the other portion of the first buffer area.
- the writing means is controlled so that the first buffering data is further added so as to add the second buffering data, and the second buffering data is further added so as to add the other part of the second buffering area.
- the writing means sets the first buffer area in the first buffer area after the writing of the second portion to the second recording layer is completed.
- the first buffer data is further added to fill the other part, and the second buffer data is further added to fill the other part of the second buffer area. Therefore, compatibility with DVD-ROM can be maintained.
- control unit is configured to control the The first recording layer partial force following the lead-in area of the information recording medium starts recording the first portion, and after the recording of the second portion on the second recording layer is completed, the second recording layer
- the writing unit is controlled so that information for setting a lead-out area is written to the one side of the recording end position.
- the writing unit starts recording the first portion from the first recording layer portion following the lead-in area of the information recording medium, for example, during the finalizing process.
- information for setting a lead-out area is written to, for example, one of the inner peripheral sides of the recording end position of the second recording layer. . Therefore, compatibility with DVD-ROM can be maintained.
- the writing unit is configured to be able to optically write the first and second portions by irradiating a laser beam.
- the second recording layer is located on the back side of the first recording layer when viewed from the direction of irradiation of the laser beam, and the control means performs the interlayer jump on the first recording layer as the interlayer jump. Controlling the writing means so as to perform an interlayer focus jump from the first recording layer to the second recording layer.
- An embodiment according to the information recording / reproducing apparatus of the present invention is characterized in that: a reading means capable of reading the first and second portions from the first and second recording layers; Reproducing means for reproducing the first portion from the first recording layer along the (I) first track path, and then reading the first portion from the first recording layer.
- the first buffer data in the predetermined amount is read in a part of the buffer area, and ( ⁇ ) thereafter, the predetermined amount of the second buffer data is read in a part of the buffer area of the second recording layer.
- controlling the reading means so as to start reading of the second portion along the second track path based on the searched address.
- controlling the reproducing means so as to reproduce the read first and second portions.
- the first and second data which are the actual data are
- the link does not occur for the two parts.Since it occurs for the first and second buffer data written in a part of the first and second buffer areas, the link is not regenerated under the control of the control means. At the time of the reproducing operation by the raw means, it is possible to almost or completely eliminate the deterioration of the signal quality due to the interlayer jump of the first and second portions which are the actual data. In addition, it is possible to perform a quick, accurate, and efficient reproduction operation at the time of an interlayer jump.
- At least a pair of the first and second recording layers is laminated, and the recording or reproducing position for the first and second recording layers is not recorded in the recording area.
- a buffer area for preventing the recording area from being deviated is located adjacent to the recording areas of the first and second recording layers.
- Part can be written to the first recording layer along a first track path from one side of the inner and outer sides of the information recording medium to the other side, and the recording direction is folded back to perform the recording.
- a recording method wherein (I) the first track Writing the first portion on the first recording layer along a path, and subsequently, a predetermined amount of the first buffer data along the first track path in a part of the buffer area of the first recording layer. Writing data to the first recording layer, and performing an interlayer jump from the first recording layer to the second recording layer. (II) Then, in a part of the buffer area of the second recording layer, A predetermined amount of second buffer data is written to the second recording layer along a second track path, and then the second portion is written to the second recording layer along the second track path.
- a control step for controlling the writing means is provided.
- the recording operation by the writing means under the control of the control step similarly to the above-described embodiment of the information recording apparatus of the present invention, the recording operation by the writing means under the control of the control step. Occasionally, there is no link between the first and second parts, which are actual data, and there is no link between the first and second buffer data written in a part of the first and second buffer areas. Therefore, it is possible to almost or completely eliminate the deterioration of signal quality due to the interlayer jump of the first and second portions, which are actual data, during the recording or reproducing operation. In addition, at the time of an interlayer jump during the recording operation, a predetermined amount of the first and second buffer data that does not cover the entire buffer area of the first and second recording layers becomes part of the buffer area. Since data is written, the time required for the entire interlayer jump can be significantly reduced.
- the information recording method according to the present invention can also adopt various aspects.
- the embodiment according to the information recording / reproducing method of the present invention is the same as the above-described embodiment (including its various aspects) of the information recording apparatus of the present invention, except that the first and second portions are the same as those of the first embodiment.
- An information recording / reproducing method for an information recording / reproducing apparatus further comprising: reading means readable from a second recording layer; and reproducing means for reproducing the read first and second portions. The first portion is read from the first recording layer along a first track path, and then at least a portion of the predetermined amount of the first buffering data in a part of the buffering area of the first recording layer.
- the above-described information recording / reproducing method of the present invention is used.
- the first and second portions, which are actual data are written in a part of the first and second buffer areas where no link is generated.
- the second buffering data the signal quality is degraded by the interlayer jump of the first and second parts, which are the actual data, during the reproducing operation by the reproducing means under the control of the control process. This can be almost or completely eliminated. This makes it possible to perform quick, accurate, and efficient playback operations when jumping between layers.
- the embodiment according to the computer program of the present invention is a recording control computer that controls a computer provided in the embodiment (including its various aspects) according to the above-described information recording apparatus of the present invention.
- the computer program is read into a computer from a recording medium such as an R ⁇ M, a CD-ROM, a DVD-ROM, or a hard disk that stores the computer program.
- a recording medium such as an R ⁇ M, a CD-ROM, a DVD-ROM, or a hard disk that stores the computer program.
- the embodiment of the computer program of the present invention can also adopt various aspects.
- the embodiment of the computer program product in the computer-readable medium of the present invention is realized by a computer provided in the above-described embodiment of the information recording apparatus of the present invention (including its various aspects). Explicitly embody executable program instructions, causing the computer to function as at least a portion of the writing means, the calculating means, and the control means.
- the computer program product can be read into a computer from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, or a hard disk that stores the program product. If the program is downloaded to a computer, at least a part of the writing unit, the calculating unit, and the control unit of the present invention described above can be relatively easily implemented. More specifically, the computer program product is a computer readable code (or a computer readable instruction) that functions as at least a part of the writing unit, the calculation unit, and the control unit of the present invention. It is composed of
- the recording / reproducing operation is performed because the information recording / reproducing apparatus includes the writing means, the control means and the steps, the reading means, the reproducing means, and the control means and the steps.
- the computer is caused to function as the embodiment of the above-described information recording apparatus of the present invention. It can be almost or completely eliminated that the signal quality deteriorates due to interlayer jumps.
- FIG. 1A is a schematic plan view showing a basic structure of an optical disc having a plurality of recording areas according to a first embodiment of the information recording medium of the present invention
- FIG. 2 is a schematic sectional view of the optical disc and a schematic conceptual view of a recording area structure in a radial direction corresponding to the schematic sectional view.
- an optical disc 100 is formed on a recording surface on a disc body having a diameter of about 12 cm like a DVD, with the center hole 1 as the center.
- a lead-in area 101, a data area 102, and a lead-out area 103 or a middle area 104 according to the example are provided.
- a recording layer or the like is laminated on the transparent substrate 106 of the optical disc 100, for example.
- tracks 10 such as a groove track and a land track are alternately provided in a spiral or concentric manner around the center hole 1.
- ECC block 11 is a data management unit based on a preformat address in which recording information can be corrected for errors.
- the present invention is not particularly limited to an optical disk having such three areas.
- the lead-in area 101, the lead-out area 103, or the middle area 104 may have a further subdivided configuration.
- the optical disc 100 has, for example, an example of first and second recording layers according to the present invention described later on a transparent substrate 106. It has a structure in which the L0 layer and the L1 layer are stacked. At the time of recording / reproducing of such a two-layer type optical disc 100, in FIG. 1 (b), depending on which recording layer the focusing position of the laser beam LB irradiated from the upper side to the lower side is adjusted. Recording or reproduction is performed in the L0 layer or recording and reproduction is performed in the L1 layer.
- the optical disc 100 may be a single-sided dual-layer, that is, a dual-layer double-sided, which is not limited to the dual-layer, that is, a dual-layer double-sided.
- the present invention is not limited to an optical disk having two recording layers as described above, but may be a multilayer optical disk having three or more layers. The recording / reproducing procedure of the two-layer type optical disc by the opposite method and the data structure in each layer will be described later. Also, for convenience of explanation, in FIG. 1B, the laser light LB is irradiated from the upper side to the lower side in the figure, unlike FIG. 3 and the like described later.
- FIG. 2 is a block diagram of the information recording / reproducing apparatus according to the first embodiment of the information recording apparatus of the present invention.
- the information recording / reproducing device 300 has a function of recording data recorded on the optical disc 100 and a function of reproducing recorded data recorded on the optical disc 100.
- Reference numeral 300 denotes a device that records information on the optical disc 100 and reads information recorded on the optical disc 100 under the control of a CPU (Central Processing Unit).
- CPU Central Processing Unit
- the information recording / reproducing apparatus 300 includes an optical disk 100, a spindle motor 351, an optical pickup 352, a signal recording / reproducing unit 353, a CPU (drive control unit) 354, a memory 355, a data input / output control unit 306, and an operation control unit 307. , An operation button 310, a display panel 311, and a bus 357.
- the spindle motor 351 rotates and stops the optical disk 100, and operates when accessing the optical disk. More specifically, the spindle motor 351 is configured to rotate and stop the optical disc 100 at a predetermined speed while receiving spindle servo from a servo unit (not shown) or the like.
- the optical pickup 352 performs recording and reproduction on the optical disc 100, and includes a semiconductor laser device and a lens. More specifically, the optical pickup 352 irradiates the optical disc 100 with a light beam such as a laser beam at a first power as read light at the time of reproduction, and modulates it at a second power as write light at the time of recording. And irradiate.
- the signal recording / reproducing means 353 performs recording / reproducing on the optical disc 100 by controlling the spindle motor 351 and the optical pickup 352. More specifically, the signal recording / reproducing means 353 is composed of, for example, a laser diode (LD) driver and a head amplifier. Yes.
- the laser diode driver (LD driver) drives a semiconductor laser (not shown) provided in the optical pickup 352.
- the head amplifier amplifies the output signal of the optical pickup 352, that is, the reflected light of the light beam, and outputs the amplified signal.
- the semiconductor laser (not shown) provided in the optical pickup 352 is driven so as to make the determination.
- the signal recording / reproducing means 353, together with the optical pickup 352 constitutes an example of the “writing means”, “reading means”, and “reproducing means” according to the present invention.
- the memory 355 is provided with a general data processing in the information recording / reproducing apparatus 300 such as a buffer area for recording / reproducing data and an area used as an intermediate buffer when converting the data into data used by the signal recording / reproducing means 353. Used in processing.
- the memory 355 is a ROM area for storing programs for operating these recorder devices, that is, firmware, and a RAM area for storing buffers used for compression / expansion of video data and variables necessary for program operations. Etc.
- the CPU (drive control unit) 354 is connected to the signal recording / reproducing unit 353 and the memory 355 via the bus 357, and controls the entire information recording / reproducing device 300 by giving instructions to each unit. Normally, software or firmware for operating the CPU 354 is stored in the memory 355. In particular, the CPU 354 forms an example of the “control means” according to the present invention.
- the data input / output control unit 306 controls data input / output from / to the information recording / reproducing device 300 from the outside, and stores and retrieves data from / to the data buffer on the memory 355.
- data input / output is a video signal
- externally received data is compressed (encoded) into an MPEG format and output to the power memory 355 at the time of data input, and the MPEG data received from the memory 355 is output at the time of data output.
- the operation control unit 307 receives and displays an operation instruction to the information recording / reproducing device 300, and transmits an instruction by an operation button 310 such as recording or reproduction to the CPU 354, and performs recording.
- the operation state of the information recording / reproducing device 300 such as during or during reproduction is output to a display panel 311 such as a fluorescent tube.
- the operation control means 307 may be constituted by a CPU and a memory (not shown) as the host computer according to the present invention.
- One specific example of the information recording / reproducing device 300 described above is a home device such as a recorder device for recording / reproducing a video.
- This recorder device is a device that records a video signal from a broadcast receiving tuner or an external connection terminal onto a disc, and outputs the video signal reproduced from the disc to an external display device such as a television.
- the operation as a recorder device is performed by causing the CPU 354 to execute the program stored in the memory 355.
- FIG. 3 shows a data structure of a two-layer type optical disc according to an information recording medium to be recorded according to the first embodiment of the information recording apparatus of the present invention and physical sectors constituting an ECC block in a recording area of the optical disc.
- FIG. 5 is a conceptual graph showing numbers and recording / reproducing methods of the optical disc in an opposite manner.
- the vertical axis indicates the sector number expressed in hexadecimal, and the horizontal axis indicates the relative position of the optical disc in the radial direction.
- the two-layer type optical disc 100 to be recorded in the first embodiment of the information recording apparatus of the present invention has the above-described transparent substrate and two-layer recording laminated on the transparent substrate. It has a layer, that is, an L0 layer and an L1 layer.
- the L0 layer is provided with a lead-in area 101-0, a data area 102-0, and a middle area 104-0 from the inner peripheral side to the outer peripheral side.
- the lead-in area 10 1-0 includes a PC (Power Calibration) area PCA for OPC (Optimum Power Calibration) processing and an RM (Recording Management) area RMA in which recording management information is recorded. Te, ru.
- the middle area 104-1, the data area 1 02-1 and lead-out 103-1 are provided.
- the lead-out area 103-1 is also provided with an unillustrated area, an OPC area, and the like.
- the two-layer optical disc 100 is configured as described above, when recording or reproducing the optical disc 100, the information recording / reproducing apparatus according to the first embodiment of the information recording apparatus of the present invention is illustrated.
- the laser beam LB is radiated from the side of the substrate (not shown) from the lower side in FIG. 3, that is, from the lower side to the upper side in FIG.
- the moving distance and direction are controlled. Thereby, data is recorded on each recording layer, or the recorded data is reproduced.
- the present invention relates to an information recording medium to be recorded in the first embodiment of the information recording apparatus.
- the opposite method is employed as a recording or reproducing procedure for a two-layer optical disk.
- the opposite method means that the optical pickup of the information recording / reproducing apparatus according to the first embodiment moves from the inner peripheral side to the outer peripheral side in the L0 layer as a recording or reproducing procedure of a two-layer optical disc.
- the optical pickup moves from the outer side to the inner side, that is, in the opposite direction of moving in the right direction of the arrow in FIG. This is a method in which recording or reproduction on a two-layer optical disk is performed by moving to the left.
- the optical pickup 100 The sector number in the recording area increases. More specifically, the optical pick-up is performed at the end position of the lead-in area 101-0 with a sector number of "02FFFFh" (see point A in FIG. 3), and the data area 102-0 with a sector number of "030000h". Start position (refer to point B in Fig. 3), end position of data area 102-0 with sector number "lAFFFFh” (hereinafter referred to as "return" of the L0 layer as appropriate: point C in Fig. 3).
- the middle area 104-1 serving as a buffer for the optical pickup power and the start position of the data area 102-1 having a sector number of "E50000h” (hereinafter referred to as the "return point” of the L1 layer as appropriate: Access the end position of data area 102-1 with sector number "FCFFEFh” (see point E in Fig. 3) in order, and move to readout area 103-1 (see point D in Fig. 3). As a result, recording or reproduction in the L1 layer is performed.
- the sector numbers in the L0 layer and the L1 layer described above all have a relationship of 15's complement in hexadecimal. More specifically, for example, the turning point (sector number "1 AFFFFh”) in the L0 layer and the turning point ⁇ (sector number "E50000h”) in the L1 layer are in a relationship of 15's complement.
- the complement of "lAFFFFh” is obtained by converting the hexadecimal sector number "lAFFFFh” into the binary number "000110101111111111111111111111” and inverting the bit (in / out: inver "111001010000000000000000 ,, hexadecimal”) It is obtained by reconverting to E50000h ,.
- the content information is stored in, for example, "lAFFFFh” from the sector number "030 OOOh” of the data area 102-0 in the L0 layer and "E50000h” in the sector number "E50000h” of the data area 102-1 in the L1 layer.
- the recording or reproduction is performed at the same time as the optical pickup is continuously moved.
- Block Address is assigned one-to-one. More specifically, for example, the sector number “030000h” corresponds to “000000” LBA, and the sector number “FCFFEFh” corresponds to “30FF EF” LBA.
- FIG. 4 shows a first example of the information recording apparatus of the present invention.
- FIG. 4 is a schematic conceptual diagram illustrating an outline of operation of the information recording / reproducing device according to the embodiment.
- data such as content is recorded in the data area 102-0, and subsequently, a predetermined amount constituting an example of the first buffer data according to the present invention. Is recorded as the first middle area 104a-0 in the L0 layer. Then, after an interlayer jump to the L1 layer, a predetermined amount of buffer data constituting an example of the second buffer data according to the present invention is recorded on the L1 layer as the second middle area 104a-1, and subsequently. Then, data is recorded in the data area 102-1 (step Sl).
- buffer data is added to the L0 layer so as to cover the entire middle area 104-0 (step S2), and data is additionally written to the L1 layer so as to cover the entire middle area 104-1. (Step S3).
- FIG. 5 is a schematic diagram showing an operation principle of writing buffer data in a middle area of an optical disc and performing an interlayer jump by the information recording / reproducing apparatus according to the first embodiment of the information recording apparatus of the present invention.
- FIG. 5A is a schematic conceptual diagram (FIG. 5A) and a schematic graph diagram (FIG. 5B) showing transition of sector numbers at the time of an interlayer jump.
- the vertical axis indicates the physical sector number
- the horizontal axis indicates the relative positional relationship between the inner circumference and the outer circumference of the optical disc.
- a buffer of a predetermined amount of “n” ECC blocks constituting an example of the first buffering data according to the present invention Data is recorded in the middle area 104-0 of the L0 layer. Then, through an interlayer jump to the L1 layer, a predetermined amount of buffer data constituting an example of the second buffer data according to the present invention is recorded in the middle area 104-1 of the L1 layer.
- Each ECC block is composed of "16" sectors ("32" KB).
- the sector located at the beginning of each ECC block can be a linking sector that links the sectors.
- FIG. 6 is a diagram showing a specific example of a link structure along a track path at a linking position in a sector by the information recording / reproducing apparatus according to the first embodiment of the information recording apparatus of the present invention.
- FIG. 6A is a schematic structural diagram (FIG. 6A) and a schematic conceptual diagram showing a position where this link is performed (FIG. 6B).
- the 16th byte of the first sync frame of the linking sector located at the beginning of one ECC block is an area overwritten by new appending, and is called a linking position.
- a linking sector having an information amount of 2 KB is configured to include 26 sync frames, and each sync frame includes a sync signal portion of "32" channel bits and a sync signal portion of "1488" channel bits. It has a data section.
- such a link along the track path is performed when additional recording is performed at the time of an interlayer jump from the LO layer to the L1 layer (see the link portion R1). . It is also performed when buffer data is added along the track path after the first middle area 104a-0 in the LO layer (see the link section R2).
- additional recording in units of mark pits is feasible, but is preferably not performed. This is because it is better to consider the uncertainty of the mark pit shape due to the heat conduction at the beginning and end of recording and a certain margin for the information recording device.
- a shift of the overwriting area or a write error due to a shift of the recording clock unit is corrected by an ECC (Error Correcting Code).
- ECC Error Correcting Code
- additional writing is not performed in a channel bit portion of the synchronization signal or a data portion located immediately before the synchronization signal portion. Considering the various margins described above, write errors may occur, and in such cases, errors are similarly corrected by the ECC.
- the synchronization signal portion is closely related to the control operation, the DVD does not link the synchronization signal portion according to the standard.
- FIG. 7 shows the information recording of the present invention.
- a schematic structural diagram (FIG. 7 (a)) showing a specific example of a structure of a link in a direction opposite to a track path at a linking position in a sector by the information recording / reproducing device according to the first embodiment of the device;
- FIG. 7 (b) is a schematic conceptual diagram showing a position where this link is performed.
- a new write operation (see step S202) is performed at the beginning of the recorded area (see step S201)
- the linking position in the sector is set.
- Link (overwrite) is performed. More specifically, for example, most of the recorded areas are located at the beginning of one ECC block (16 sectors) to be newly added. For example, the first sync of 26 sync frames in the linking sector For example, data is recorded from the "16" byte (Bytes) onward between "15" and "17” bytes of the frame.
- additional writing is performed, additional writing is performed up to, for example, the 16th byte of the first sync frame of this linking sector.
- the 16th byte of the first sync frame of the linking sector located at the beginning of one ECC block is an area overwritten by new appending, and is called a linking position. Is done.
- the link in the direction opposite to the track path is such that, after recording the second middle area 104a-1 in the L1 layer, buffer data is referred to as a track path. Is performed when data is added in the opposite direction (see link R3).
- FIG. 8 is a schematic conceptual diagram (FIG. 8 (a)) schematically showing the operation of the information recording / reproducing apparatus according to one specific example of the comparative example
- FIG. 8 is a schematic conceptual diagram (FIG. 8 (b)) showing an operation outline of the recording / reproducing apparatus.
- step S10 data such as content is recorded in the data area 102-0.
- step S10 data is recorded in the data area 102-1 through the interlayer jump to the L1 layer (step S10).
- the buffering data is additionally written on the entire middle area 104-0 of the LO layer (step S20), and is additionally written on the entire middle area 104-1 of the L1 layer (step S30). ).
- actual data such as contents are The link along the track path described in 6 occurs, and the signal quality of the linked actual data deteriorates.
- the link unit 31 a link in the direction opposite to the track path described with reference to FIG. 7 occurs for real data such as content, and the signal quality of the linked real data deteriorates. Let me do it.
- the above-mentioned first middle area 104a-0 where no link occurs to actual data Since the link is generated for the buffer data recorded in 104a-1 and 104a-1, it is possible to almost or completely eliminate the deterioration of the signal quality of the actual data in the interlayer jump.
- the information recording / reproducing apparatus at the time of an interlayer jump, a predetermined amount of buffer data that does not extend over the entire middle area. Is partially recorded in the middle area, so the time required for the entire interlayer jump can be significantly reduced.
- FIG. 9 is a schematic diagram showing an operation principle of writing buffer data in a middle area of an optical disc and performing an interlayer jump by the information recording / reproducing apparatus according to the second embodiment of the information recording apparatus of the present invention.
- FIG. 9A is a schematic conceptual diagram (FIG. 9A)
- FIG. 9B is a schematic graph diagram showing transition of sector numbers at the time of an interlayer jump. The vertical and horizontal axes are the same as those in FIG. 5 (b) described above. As shown in FIG.
- the buffering is performed from the linking sector (sector number: XI) of the “1” -th ECC block to the linking sector (sector number: Xn) of the “n” -th ECC block.
- Data is recorded, an interlayer jump is performed from the L0 layer to the L1 layer, and a linking sector (sector number: InvXn + 16) is searched in the L1 layer. This is because "1" is used to search for a linking sector located on the inner side of the ECC block.
- linking is performed at a linking position between the linking sector (sector number: Xn) and the searched linking sector (sector number: InvXn + 16).
- a linking sector (sector number: InvXn + 16) which is an example of the semi-corresponding address according to the present invention located on the inner side by “1” ECC block (16 sectors) from the searched corresponding address Since the writing of buffer data in the L1 layer is started, a smooth and efficient recording operation along the track path in the L0 layer and the L1 layer can be performed.
- FIG. 10 is a schematic concept showing an operation principle of writing buffer data into a middle area of an optical disc and performing an interlayer jump by the information recording / reproducing apparatus according to the third embodiment of the information recording apparatus of the present invention.
- FIG. 10A is a diagram (FIG. 10A)
- FIG. 10B is a schematic graph showing the transition of sector numbers during an interlayer jump. The vertical and horizontal axes are the same as those in FIG. 5 (b) described above.
- FIG. 10 (a) one example of the first and second buffer data according to the present invention
- the basic appending procedure of the predetermined amount of buffer data to be performed and the configuration such as the sector number of the linking sector are almost the same as those of the first embodiment described with reference to FIGS.
- the buffering is performed from the linking sector (sector number: XI) of the "1" -th ECC block to the linking sector (sector number: Xn) of the "n" -th ECC block.
- Data is recorded, an interlayer jump is performed from the L0 layer to the L1 layer, and in the L1 layer, for example, the sector number “InvXw” of the linking sector in which the linking position is detected first is, for example, RM ( It may be recorded in an area where management or control information such as a recording management area is recorded, or in a middle area immediately before the data area of the L1 layer.
- linking sector may be located on the inner side or outer side, for example, on the order of several tens of track pitches. Then, linking is performed at a linking position between the linking sector (sector number: Xn) and the stored linking sector (sector number: InvXw). The details of the link structure at the linking position in the sector are the same as those described above with reference to FIG. Then, buffer data is recorded in the L1 layer from the linking sector (sector number: InvXw) to the ECC block including the linking sector (sector number: ⁇ L1).
- an information recording / reproducing apparatus for a write-once optical disc such as a dual-layer DVD-R
- the present invention is applicable to an information recording / reproducing apparatus for a rewritable optical disk such as a DVD-RZW.
- the present invention is also applicable to an information recording / reproducing apparatus for a multi-layer optical disk such as a three-layer optical disk.
- the present invention can be applied to information recording / reproducing devices for other multi-layer large-capacity recording media.
- the present invention is not limited to the above-described embodiments.
- the information recording apparatus and method and the computer program according to the present invention can be used, for example, in a recorder for a multilayer optical disc capable of recording various types of information at high density for consumer use or business use. is there. Further, for example, the present invention can also be used for a recording device or the like which is mounted on various consumer or business computer devices or can be connected to various computer devices.
Description
Claims
Priority Applications (3)
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US10/586,647 US7529163B2 (en) | 2004-01-20 | 2005-01-18 | Information recording apparatus and method, and computer program |
EP05703767.3A EP1708179B1 (en) | 2004-01-20 | 2005-01-18 | Information recording apparatus, information recording and reproducing apparatus, and information recording method |
JP2005517101A JP4422107B2 (ja) | 2004-01-20 | 2005-01-18 | 情報記録装置及び方法、並びにコンピュータプログラム |
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CN101025951B (zh) * | 2006-02-24 | 2010-12-15 | 三星电子株式会社 | 播放光盘的装置和方法 |
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EP1732070B1 (en) * | 2004-03-29 | 2012-05-30 | Pioneer Corporation | Information recording medium, information recording device and method, and computer program |
KR100667766B1 (ko) | 2004-10-23 | 2007-01-11 | 삼성전자주식회사 | 정보 저장 매체, 기록/재생 장치 및 기록/재생 방법 |
JP2007299447A (ja) * | 2006-04-28 | 2007-11-15 | Teac Corp | 光ディスク装置、データ記録方法、及び多層光ディスク媒体 |
US8179766B2 (en) * | 2007-12-03 | 2012-05-15 | Pioneer Corporation | Recording device and method, and computer program |
US9286159B2 (en) * | 2013-11-06 | 2016-03-15 | HGST Netherlands B.V. | Track-band squeezed-sector error correction in magnetic data storage devices |
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Also Published As
Publication number | Publication date |
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US7529163B2 (en) | 2009-05-05 |
JP4422107B2 (ja) | 2010-02-24 |
CN100440333C (zh) | 2008-12-03 |
EP1708179A4 (en) | 2010-05-19 |
EP1708179B1 (en) | 2013-05-22 |
EP1708179A1 (en) | 2006-10-04 |
US20080225659A1 (en) | 2008-09-18 |
CN1910664A (zh) | 2007-02-07 |
JPWO2005069283A1 (ja) | 2007-12-27 |
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