WO2004023481A1 - Rom−ram媒体及び、その記憶装置 - Google Patents
Rom−ram媒体及び、その記憶装置 Download PDFInfo
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- WO2004023481A1 WO2004023481A1 PCT/JP2002/008833 JP0208833W WO2004023481A1 WO 2004023481 A1 WO2004023481 A1 WO 2004023481A1 JP 0208833 W JP0208833 W JP 0208833W WO 2004023481 A1 WO2004023481 A1 WO 2004023481A1
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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
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
- G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
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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
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
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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
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
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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
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
- G11B20/00347—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier wherein the medium identifier is used as a key
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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
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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
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
- G11B27/3063—Subcodes
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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
- G11B7/0079—Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity [ZCLV], Zone Constant Angular Velocity [ZCAV], carriers with RAM and ROM areas
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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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2403—Layers; Shape, structure or physical properties thereof
- G11B7/24035—Recording layers
- G11B7/24038—Multiple laminated recording layers
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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
- G11B2020/10935—Digital recording or reproducing wherein a time constraint must be met
- G11B2020/10944—Real-time recording or reproducing, e.g. for ensuring seamless playback of AV 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
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1259—Formatting, e.g. arrangement of data block or words on the record carriers on discs with ROM/RAM areas
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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
- G11B2220/211—Discs having both read-only and rewritable or recordable areas containing application data; Partial ROM media
Definitions
- the present invention relates to an optical self-recording medium, and more particularly to a ROM section in which main information is recorded on an optically transparent scythe by physical changes such as irregularities such as pits, and at least one or more ROM sections.
- a ROM-RAM recording medium having a RAM section formed as a recording layer on which main information can be written more than once and a sub-code area for recording sub-information in a ROM section And related to its storage.
- a conventional medium in which an emory) part is contained on one sheet for example, there is a medium such as a so-called partial ROM.
- a ROM section and a RAM section are recorded in separate areas on one optical disc.
- synchronization of signals reproduced from the ROM section and the RAM section is established in data recorded in the ROM section and the RAM section of the optical disc. Embed a synchronization flag to Then, at the time of data reproduction, the read flag recognizes and recognizes the synchronization flag, and reproduces the data reproduced from the ROM section and the RAM section by combining them again.
- the ROM section and the RAM section are recorded in separate areas on one optical disc. Therefore, in a system in which the data recorded in each of the ROM section and the RAM section is reproduced, and these data are combined and used, the ROM section and the RAM section are accessed by an optical pickup and used. Since it is necessary to reproduce data from each area, It is necessary for the pickup to always move and access between the ROM section and the RAM section. For this reason, there is a considerable time delay before data to be reproduced and synchronized from the ROM section and the RAM section is sent from the optical pickup to the read channel. As a result, the reliability of the reproduced data was low.
- the so-called concurrent ROM-RAM medium that has been formed data in the ROM section and the RAM section can be handled simultaneously.
- Concurrent ROM For information on RAM media, see, for example, “Concurrent ROM” in Television Society Journal Vol. 1.46, No. 10 and pp. 1319 to 1324 published in 1992. The paper entitled “A Realization Method for RAM Optical Disks” describes a concurrent ROM_RAM optical disk capable of simultaneous playback by ROM-RAM.
- a concurrent ROM-RAM medium a general content such as a movie or music is recorded in a ROM portion, and the recorded content is often used by a plurality of users. For this reason, from the viewpoint of data protection and copyright protection, management of access history, recording of user information such as various registration information, and recognition of users who intend to use the concurrent ROM-RAM media are performed. A method is needed. These methods need to be as simple as possible. Disclosure of the invention
- the present invention has been made in view of the above points, and has been described in a simple manner. Record or reproduce information on the concurrent ROM-RAM media and its concurrent ROM-RAM media, which can record the relevance of main information or data recorded in the RAM section, user information, etc. It is intended to provide a storage device.
- the present invention provides a ROM section in which main information is recorded on an optically transparent substrate by physical change such as unevenness, and a main information that is recorded thereon at least once.
- a RAM portion formed as a writable recording layer, and a ROM portion provided with a subcode area for recording sub-information.
- a sub-code area for recording sub-information in the RAM section which is physically located at substantially the same position in the track direction as the sub-code area of the ROM section, is defined as a tree.
- the present invention it is possible to add various management information to the data in the RAM section by providing the subcode area in the RAM section adjacent to or substantially at the same position as the subcode area in the ROM section.
- the subcode area of the RAM section records association information between the main information of the ROM section and the main information of the RAM section.
- association information is recorded in the sub-code area of the RAM section, it is not necessary to access the read-in area again during data reproduction, thereby enabling high-reliability seamless reproduction.
- the main information of the RAM section associated with the main information of the ROM section is recorded at a position where the main information of the RAM section is read seamlessly when read. It is characterized by the following.
- the data in the RAM section associated with the data in the ROM section can be recorded on the same recording track as the data in the ROM section, so that the access by the re-enactor does not occur, so the reliability is further increased. It enables high-quality, seamless playback.
- ROM-RAM medium of the present invention user registration information is recorded in a subcode area provided in a lead-in area of a RAM section, and provided in a data recording area of a RAM section. Access management information based on user information is recorded in the subcode area It is assumed that it is done.
- the access management information is recorded in the sub-code area of the data section of the RAM section, it is not necessary to access the read-in area again during data reproduction, and high reliability can be achieved while protecting data. This enables seamless playback.
- the access management information based on the user registration information recorded in the subcode area provided in the data storage area of the RAM section is composed of the main information of the ROM section and the RAM section.
- the access management information relating to the simultaneous reproduction permission ffiS! J is a subcode area of the data section of the RAM section. Therefore, reproduction in a different form for each user can be performed seamlessly without accessing the read-only area for each reproduction data unit.
- a data access count information is recorded in a subcode area provided in a lead-in area of a RAM section, and the data access count information is composed of ROM data. It is assumed that information of simultaneous reproduction of RAM data is included.
- the history information of the simultaneous reproduction of the data in the ROM section and the data in the RAM section is recorded in the sub-code area of the lead-in area, the information can be collected quickly.
- a storage device that records information on the ROM-RAM medium or reproduces information from the ROM-RAM medium is used as a glue pad.
- the present invention it is possible to record information on the ROM-RAM medium or to reproduce information from the ROM-RAM medium.
- a ROM section in which main information is recorded on an optically transparent substrate by physical change such as unevenness, and the main information can be written at least once on the ROM section.
- a ROM having a RAM portion formed as a recording layer. Information is recorded on a RAM-RAM recording medium, or information is reproduced from the ROM-RAM recording medium.
- a lock composed of ROM information and RAM information is generated. And a means for generating a key from the lock; and a means for recognizing the user that has a means for detecting a match between the key generated from the lock and the key input to the storage device.
- ROM information uniquely provided for each medium is used.
- This ROM information is known as the media ID.
- a lock and a key for identifying the owner are generated from the media ID information, and the owner acquires the key information when purchasing the medium. This allows the owner to access this medium.
- ROM-RAM media is generally expected to be operated by multiple users because the ROM section contains content.
- a lock and a key for user recognition are generated based on information obtained by combining media ID information, for example, ROM information, and RAM information created by an owner. The user obtains this key information from the owner by some means.
- the owner controls multiple media. Therefore, it is laborious to create and manage locks and keys without duplication in order to recognize users.
- the media ID information which is ROM information uniquely provided for each medium
- the owner can use the same user. Even if the same RAM information is assigned to different media, different locks and keys are generated for each medium. This ensures more secure data.
- the ROM information and the RAM information are recorded at substantially the same physical position in the track direction, and W [
- ROM information used for generating a lock and a key for recognizing a user is not limited to a media ID, and ROM information provided in another area may be used. Les ,.
- the RAM information created by the owner is recorded in the sub-code area for recording the ROM information and the sub-code area of the RAM section that is physically the same or close to the RAM section, and is read by ROM-RAM simultaneous reproduction.
- a lock and a key for user recognition are generated based on the ROM information and the RAM information. In this way, the information on which the lock and the key are generated can be recorded in any area on the medium. This increases the confidentiality of the lock and key recording positions, and further reduces unnecessary access for user recognition. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 shows a concurrent ROM-RAM medium according to the invention.
- FIG. 2 is a diagram showing recording marks on a concurrent ROM-RAM medium according to the present invention.
- FIG. 3 is a cross-sectional view of a concurrent ROM-RAM medium according to this effort.
- FIG. 4 is a diagram showing a configuration example of a ROM-RAM medium and its recording / replacement.
- FIG. 5 is a diagram showing an LD feedback signal, a ROM playback signal, and a RAM playback signal for each operation mode.
- FIG. 6 is a diagram showing the structure of a subcode in the data section of a compact disc.
- FIG. 7A is a diagram illustrating a configuration example of a subcode of the ROM unit.
- FIG. 7B is a diagram showing a configuration example of a subcode of the RAM unit.
- FIG. 8A is a diagram showing a configuration example of a subcode of the ROM section.
- FIG. 8B is a diagram showing a configuration example of a subcode of the RAM unit.
- FIG. 9 is a diagram showing the format of a signal recorded in the ROM unit.
- FIG. 10 is a diagram showing a format of a signal recorded in the RAM unit.
- FIG. 11A is a diagram showing a simple example of a reproduction state of a ROM-RAM medium.
- FIG. 11B is a diagram showing a simple example of a reproduction state of a ROM-RAM medium.
- FIG. 12A is a diagram showing that the input information is recorded in the relay.
- FIG. 12B is a diagram showing recording of AtL information in a subcode area of a data part of a RAM part.
- FIG. 13 is a diagram showing a format of a signal recorded in a ROM unit.
- FIG. 14 is a diagram showing the format of a signal recorded in the RAM unit.
- FIG. 15 is a diagram showing a reproduction process for user A.
- FIG. 16 is a diagram showing a reproduction process for user B.
- FIG. 17 is a diagram showing a reproduction process for the user C.
- Figure 18 is a diagram showing owner recognition means.
- FIG. 19 is a diagram showing a user recognition means.
- FIG. 20 is a diagram showing a user recognition means.
- FIG. 21 is a diagram showing a schematic block diagram of signal processing performed by the main controller 415 in order to recognize a user according to the present invention.
- FIG. 1 shows a concurrent ROM-RAM medium 100 according to the invention
- FIG. 2 shows recording marks of a concurrent ROM-RAM medium according to the invention
- FIG. 3 shows a recording mark according to the invention.
- 1 shows a cross-sectional view of a concurrent ROM-RAM medium.
- the ROM-RAM optical disc 100 has a spiral track, and has a lead-in area 101, a data recording area 102, and a lead-out area 103 from the inner peripheral side.
- a reedin is formed in a region having a radius of about 50 mm from the center, similarly to a compact disk (CD).
- phase pits are formed over the entire area of the lead-in area 101, the data recording area 102, and the read-out area 103, and a recording layer is formed on the phase pits.
- FIG. 2 shows recording marks recorded on a concurrent ROM-RAM optical disc 100 according to the present invention.
- the ROM—RAM optical disc 100 includes, for example, marks formed by the above-described pits, such as marks 201 and 202, and marks 203 and 204, 205 and , 206, both marked on the recording layer.
- Line segment AB shows a line along a section perpendicular to the track.
- the data area to be recorded may be slightly shifted in the track direction between the ROM section and the RAM section.
- FIG. 3 shows a sectional view of a ROM-RAM optical disc 100 according to the present invention.
- the ROM-RAM optical disc 100 according to the present invention comprises a substrate 301, a dielectric layer 302, a magneto-optical recording layer (perpendicular magnetization layer) 303, a dielectric layer 304, and a reflective layer 300. 5 and an overcoat layer 36.
- the symbols A and B in FIG. 3 correspond to the A and B ends of the line segment AB in FIG. Fig. 3 shows a cross section taken along line segment AB in Fig. 2. Show. Pits 201 and 202 in FIG. 3 correspond to pits 201 and 202 in FIG. Arrows 203 to 206 in FIG. 3 indicate the magnetization directions of the magnetic recording layers 303 of the recording marks 203 to 206 in FIG. In this embodiment, the magnetization direction is perpendicular to the magnetic recording layer 303.
- FIG. 4 shows an embodiment of the R-RAM medium 4 17 and its recording / rewriting 400.
- the recording device 400 is a laser diode LD 401, a collimator lens 410, a polarizing beam splitter 411, a condenser lens 412, an APC photodetector 413, and an amplifier.
- the information to be recorded 1 is transmitted from the input / output device 4 41 via the input / output circuit 4 40 and the interface 4 3 9. Input to the main controller 4 15.
- the main controller 4 15 sends the recording signal to the laser diode driver 431 and the magnetic head driver 437.
- the laser diode driver 431 controls the laser diode 401 to emit laser light for writing, and the laser light is converted into light by the collimator lens 410, and the actuator 4
- the ROM-RAM medium 4 17 is focused and irradiated by the objective lens 4 16 in 3 5.
- the magnetic head driver 437 controls the magnetic head 438 according to the recording signal, and records information on the recording layer of the ROM-RAM medium 417.
- the age at which a ROM signal and a RAM signal are reproduced from the ROM-RAM medium 417 is as follows.
- the read laser light emitted from the laser diode 401 is converted into light by the collimator lens 410 and is converted to the R-RAM medium 417 by the objective lens 416 in the actuator 435. Is focused and irradiated.
- the reflected light from the ROM-RAM medium 4 17 is reflected by the polarizing beam splitter 4 11 to the condenser lens 4 12 and the second polarizing beam splitter 4 19.
- the second polarizing beam splitter 4 19 further divides the light at At 1 through the condenser lens 420 and the 2-beam Olanton prism 4 26 and sends it.
- the light sent to the condenser lens 420 enters the four-segment photodetector 422.
- the focus error signal generation circuit 4 2 3 and the tracking error signal generation circuit 4 2 4 generate a focus error signal and a tracking error signal based on the output of the 4-split photodetector 4 2 2 and send them to the main controller 4 15 .
- the servo controller sends a focus and track control signal to the focus and track actuator driver 436, and the focus and track actuator driver 436 sends the focus and track control signal to the focus and track actuator driver 436.
- the actuator 435 is driven to control the position of the actuator.
- the light incident on the two-beam Olanton prism 4 26 passes through the condenser lens 4 27, and is Alt to the two-segment photodetector 4 28.
- the output of the 2-split detector 4 28 passes through amplifiers 4 3 2 and 4 3 3, a phase pit signal ROM 1 signal is generated by a summing amplifier 4 29, and a differential amplifier 4 30
- the control by the laser diode driver 431 is as follows.
- the reflected light from the ROM-RAM medium 417 reflected by the polarizing beam splitter 411 is condensed by the condensing lens 412 and is sent to the APC photodetector 413.
- the output signal of APC detector 4 13 is amplified by amplifier 4 14.
- the output signal of the amplifier 414 is the ROM2 signal
- the output signal of the summing amplifier 429 is the ROM1 signal.
- a control signal for controlling the laser diode 401 is output from the main controller 415 to the laser diode driver 431.
- the control signal LDCONT for controlling the laser diode 401 from the main controller 415 is a basic read / write instruction.
- the control of the laser diode by the ROM2 signal obtained by amplifying the signal output from the APC detector 413 and the ROM1 signal output from the addition amplifier 429 is referred to as an LD feed pack.
- FIG. 5 shows an LD feedback signal, a ROM playback signal, and a RAM playback signal for each operation mode.
- the ROM 1 signal is used as the LD feedback signal
- the ROM signal is detected from the ROM 2 signal
- the RAM signal is always obtained from the RAM signal output from the differential amplifier 430.
- the ROM2 signal is used as the LD feedback signal
- the ROM signal is detected from the ROM1 signal.
- the ROM 1 signal is used as the LD feedback signal
- the RAM signal is always detected from the RAM signal output from the differential amplifier 430.
- the ROM 2 signal is used as the LD feedback signal
- the ROM signal is detected from the ROM 1 signal.
- the MO signal recorded on the recording layer formed on the phase pit is read. Therefore, a noise component is superimposed on the RAM signal output from the differential amplifier 430 in FIG. 4 due to the influence of the phase pit formed below the recording layer. Therefore, the ROM 1 signal output from the calorie calculation amplifier 429 is fed back to the laser diode driver 431 to control so as to modulate the light emission intensity of the laser diode 101 so as to cancel the influence of the phase pit. I do.
- the ROM 1 signal after such processing has an amplitude that is 1 / the control loop gain of the LD feed-back loop and is almost flat.
- the APC detector 4 13 detects the degree of modulation of the emission intensity of the laser diode 101. Therefore, the output signal of the APC detector 4 13, that is, the amplified ROM 2 signal is the reproduced signal of the phase pit itself. Like this Thus, while detecting the RAM signal, the ROM signal can be simultaneously detected from the ROM 2 signal.
- FIG. 6 shows the structure of the subcode 600 in the data section of the compact disc.
- the subcode 600 includes a synchronization signal 601, a control signal 602, an address 603, a data section 604, and a CRC section 606.
- the data section 604 is composed of P, Q, R, S, T, U, V and channels.
- FIG. 7A shows an example of the configuration of the sub-code of the ROM section
- FIG. 7B shows an example of the configuration of the sub-code of the RAM section
- FIG. 8A shows an example of the configuration of the subcode of the ROM section
- FIG. 8B shows an example of the configuration of the subcode of the RAM section.
- the same reference numerals as those in FIG. 6 indicate the same parts.
- the usage of the subcode P and Q channels has already been decided, so other information is recorded from the R channel to the W channel.
- a lock for the user can be recorded in the data portion of the subcode in the ROM section.
- a key for fine IJ of the user, an owner ID, a password, and the like can be recorded in the data portion of the subcode of the RAM unit.
- information relating to the data of the ROM section is recorded in any of the R to W channels of the subcode 600 of the data section of the RAM section.
- FIG. 9 shows the format of a signal recorded in the ROM section.
- the data recorded in the ROM section is composed of blocks such as blocks 71, 720, 730, 740, and 750.
- Each block 710 to 750 is composed of a synchronous pattern 711 to 715, a subcode section 712 to 750, and a user data section 713 to 735.
- the data part 604 of the subcode 600 shown in FIG. The sub-code section corresponds to each of the 712 powers 752.
- DATAROM1 is recorded in the user data section 713
- DATAROM2 is recorded in the user data section 723
- DAT AROM3 is recorded in the user data section 733
- the user data section is recorded.
- DATAROMX is recorded.
- ROM-RAM media only the ROM portion is recorded when the media is manufactured, and the RAM portion remains unrecorded.
- FIG. 10 shows a format of a signal recorded in the RAM unit after the medium is manufactured.
- the data recorded in the RAM section is divided into blocks 810, 820, 830, 840 and
- Each of the blocks 810 to 850 is composed of a synchronization pattern 811 to 851, a sub-code section 812 and an area 852, and a user data section 813 to 853.
- Data portion 604 of subcode 600 shown in FIG. 6 corresponds to each of subcode portions 812 to 852.
- Blocks 810 to 850 of the RAM section are recorded at positions corresponding to blocks 710 to 750 of the ROM section.
- the DAT ARAM2 is recorded in the user data section 823 of the RAM section, and the information (represented by EX in the figure) to be reproduced by replacing the DATAROM2 and the DAT ARAM 2 is recorded in the subcode section 822. ing.
- 11A and 11B show a reproduction state of a ROM-RAM medium having a ROM section having the data shown in FIG. 9 and a RAM section having the data shown in FIG.
- FIG. 11A shows, for example, playing back an original electronic publication without any modifications.
- ⁇ since no data is stored in the RAM section, the data recorded in the user data sections 713 to 753 in the blocks 710 to 750 of the ROM section are sequentially stored as shown in FIG. 11A. Will be played. Therefore, DA TAROM1 (901), DATAROM2 (902), DATAROM3 (903), and DATAROMX (904) are reproduced in this order as: ⁇ in FIG. 11A.
- FIG. 11B shows the reproduction of the original electronic publication in which a correction was made, and the data DATARAM2 corresponding to the correction was recorded in the data section 823 of the RAM section.
- the data ROM1 (1001)
- DAT ARAM 2 (1002) is played back from the user data section 823, and thereafter, as in Fig. 11A, DATAROM3 (1003) and DATAROMX (1004) Played in S order.
- DATARAM2 is stored in the user data section 823 of the RAM section so as to be recorded at the physically same position as the user data section 723 of the ROM section in which DATAROM2 is recorded. Les, preferably to record.
- FIG. 12A shows a method of accessing ⁇ in which the replacement information is recorded in the lead-in area 101 of FIG.
- the recording / reproducing apparatus 400 shown in FIG. 4 accesses the read-in area 101 of the RAM unit in FIG. 1 in step 1102. I do.
- step 1102 the reproduction data information and the related information recorded in the read-in area 101 of the RAM section are read, and a data block to be reproduced by the RAM section is determined based on the information. .
- the data block is accessed to reproduce the data.
- the lead-in area 101 of the RAM section in FIG. 1 is accessed again in step 1104.
- the operation of the above step 1 102 is repeated.
- step 1105 the reproduction of the data ends.
- FIG. 12B shows an access method of # ⁇ in which replacement information is recorded in the sub-code area of the data section of the RAM section according to the present invention.
- step 12B when reproduction is instructed in step 1221, the recording / reproducing device 400 shown in FIG. 4 regenerates the RAM in FIG. 1 in step 122. Din area 1 0 Access 1 Then, in step 122, the reproduction data information recorded in the lead-in area 101 of the ROM section is read, and a data block to be reproduced by the ROM section is determined based on the information. Then, in step 123, the data block in the ROM section is accessed to reproduce the data in the ROM section. While reproducing data in the ROM section, playback is performed while reproducing the A / P information recorded in the subcode section of the RAM section. Then, the data recorded in the RAM section is reproduced according to the information. When the reproduction of the data corresponding to the ⁇ section of the RAM section is completed, the data of the ROM section is reproduced again. And finally, in step 125, the reproduction of the data ends.
- the access management information about the user is recorded in the subcode section, and different reproduction can be performed for each user according to the access management information.
- the user registration information is recorded in a subcode area provided in a lead-in area of the RAM section.
- three users A, B, and C are registered as users.
- information such as the number of times the user accesses the ROM section and the RAM section and the number of times the ROM section and the RAM section are reproduced simultaneously are recorded. It is also possible.
- By recording such information in a subcode area provided in the lead-in area of the RAM section user management becomes easy.
- FIGS. 13 and 14 the components denoted by the same reference numerals as those in FIGS. 9 and 10 indicate the same components.
- the present embodiment is an embodiment in which three registered users A, B, and C perform access management based on access management information based on user registration information.
- access management information for users A, B, and C is recorded in subcode sections 812, 822, and 832 of the RAM section.
- “A”, “B”, and “1” recorded in the sub-code section 8 12 of the RAM section correspond to DATA A 1 recorded in the data section 8 13 and the user A.
- B can play, but he can C is information indicating that simultaneous reproduction is not possible, indicating that simultaneous reproduction is permitted.
- “A”, “1” and “1” recorded in the sub-code section 822 of the RAM section allow the user A to reproduce the DATARAM2 recorded in the data section 823. B and C indicate that they cannot be played.
- FIG. 15 shows that playback is not possible with both C.
- Figures 15, 16, and 17 show the playback process for each of users A, B, and C.
- DATAROM1 Simultaneous playback of the ROM and RAM sections of 1501
- DATARAM 1 1511
- DATAROM2 1502
- DA TARAM2 1512
- DATAROM3 1503
- DATARAM 3 1513
- the ROM and RAM of the DATAROM1 (1501) and DATARAMI (1511) can be played back simultaneously.
- the user C only the ROM portion of DATAROM1 (15 01) to DATAROMX (1505) can be reproduced, and the reproduction of the RAM portion is prohibited.
- the user recognition means is determined by the recording / reproducing device of the ROM-RAM medium described in FIG. ⁇
- FIG. 18 shows an embodiment for generating a key for owner recognition on a ROM-RAM medium to which a media ID, which is ROM data unique to a ROM-RAM medium, is added.
- step 1801 the means for generating a key for recognizing the owner of the ROM-RAM medium reads a media ID, which is ROM data unique to the ROM-RAM medium, from the ROM-RAM medium.
- a key is generated in step 1802 using the read media ID as a lock.
- the owner You can get the key when you buy your body.
- the recording / reproducing apparatus is required to input the owner information when reproducing the ROM-RAM medium, the owner inputs the key to reproduce the information! You can do it.
- the method of generating the key for recognizing the user of the ROM-RAM medium is performed by the main controller 415 of the recording / reproducing apparatus of the ROM-RAM medium shown in FIG. With reference to FIG. 19, a method of generating a key 1 A of the ROM—RAM medium A for the user 1 will be described.
- the method of generating a key for recognizing the user of the ROM-RAM medium is as follows.
- step 901 the medium ID that is ROM data unique to the ROM-RAM medium A is read from the ROM-RAM medium A.
- the owner inputs the RAM information 1 recorded in the subcode portion of the RAM portion.
- This RAM information 1 is information for recognizing the user 1.
- the RAM information 1 is input by the owner of the ROM-RAM medium A via the input / output, 4 41 in FIG. 4, and the main controller is input via the input / output circuit 44 0 and the interface 4 39.
- Sent to 4 1 5 a new lock 1A different from the media ID is generated based on the read media ID and the RAM information 1 input by the owner of the ROM-RAM medium A.
- a key 1A for recognizing the user 1 is generated based on the lock 1A generated by the read media ID and the RAM information 1.
- the owner is notified of the key 1A for recognizing the user 1 through the input / output circuit 4440.
- the user 1 can obtain the key. Thereafter, when reproducing the ROM-RAM medium A, when the recording / reproducing apparatus requests the input of the user's 3 ⁇ 4E information, the user 1 inputs the key 1A to enter the ROM-A. Regeneration of RAM medium A can be performed.
- the method of generating a key 1B of the ROM-RAM medium B for the same user 1 as described above is as follows.
- the owner inputs the RAM information 1 recorded in the subcode portion of the RAM section.
- the RAM information 1 is information for recognizing the user 1, and is the same information as the RAM information 1 described in FIG.
- the RAM information 1 is input by the owner of the RAM—RAM medium A via the input / output device 4 41 and the main controller 4 via the input / output circuit 4 40 and the interface 4 39.
- step 203 a new lock 1B different from the media ID is generated based on the read media ID and the RAM information 1 input by the owner of the ROM-RAM medium B. .
- This lock 1B is different from the lock 1A generated in step 1903 of FIG. That is, even if the owner of the ROM-RAM medium inputs the RAM information 1 for the same user 1, the media ID is different if the ROM-RAM medium of ⁇ is different.
- a lock 1 B force is generated. This makes it easier for the owner to manage the user.
- step 204 a key 1B for recognizing the user 1 is generated based on the lock 1B generated by the read media ID and the RAM information 1.
- step 204 the owner of the ROM-RAM medium B is notified of the key 1B for recognizing the user 1 via the input / output circuit 44.
- the user 1 can obtain the key 1 B.
- the user 1 inputs the key 1B to the ROM-R.
- AM media B can be reproduced.
- the RAM information input by the owner is always RAM information 1 for user 1, and for each ROM-RAM medium, Another key is generated, such as key 1A and key IB. Therefore, even for the same user, if the ROM-RAM medium is different, the same key will not be generated, so that data protection for each medium can be easily performed.
- the embodiment using the media ID as the ROM information has been described. But used to generate locks and keys to identify the user It is not necessary to limit the ROM information to the media ID, and ROM information provided in other areas may be used.
- the RAM information created by the owner is recorded in the sub-code area for recording the ROM information and the sub-code area of the RAM section that is physically the same as or close to the RAM section, and is read by ROM-RAM simultaneous reproduction.
- a lock and a key for user recognition are generated based on the ROM information and the RAM information.
- the information on which the lock and key are generated can be recorded in any area on the medium. As a result, the confidentiality of the recording positions of the lock and the key is enhanced, and unnecessary access for user recognition is further reduced.
- FIG. 21 shows a schematic block diagram of the signal processing performed by the main controller 415 to recognize and recognize a user according to the present invention.
- the ROM 1 signal that is output from the main controller 4 15 to the main controller 4 15 is input to the input section 2 1 2 1, and the ROM 2 signal that is output from the amplifier 4 14 of FIG.
- the input section 2 1 2 2 is connected to the differential amplifier 4 of FIG.
- the RAM signal output from 30 to the main controller 4 15 is input. Also, the input unit 2 123 receives an input signal from the interface 4 39 in FIG. 4, while the output unit 2 124 outputs a signal to the interface 4 39 in FIG.
- the switch 2101 is controlled to select either ROM 1 or ROM 2 in the main controller 4 15 according to the embodiment described above with reference to FIG.
- the signal selected from ROM 1 or ROM 2 is sent to the synchronization signal detection unit 210, and the synchronization signal is detected. Then, based on the detected synchronization signal, the main information and the data portion of the subcode are sent to the demodulation section 210 3 and demodulated. Then, the demodulated signal is input to the demodulator [52107] and the key generation unit 210.
- the RAM signal is sent to the synchronization signal detecting section 210, and the synchronization signal is detected. Then, based on the detected synchronization signal, the main signal and the data portion of the subcode are sent to the demodulation section 210 and demodulated. Then, the demodulated signal is decoded through a delay unit 210 to adjust the synchronization with the main information and subcode in the ROM unit. 3 ⁇ 4 2 107 is input to the key generation unit 210 8.
- the second 2107 has a function of recognizing and recognizing the above-described association information between the data in the ROM section and the data in the RAM section and the access management information of the user. As a result, the above-described function of the present invention is implemented, and the output is output to the output unit 212 through the switch 210 and sent to the interface 439.
- the switch 2110 controls the power of selecting the output of the decoding unit 2107 or the output of the comparing unit 2109 in the main controller 415.
- the owner recognition and user recognition it is required to input a key generated in accordance with the method of generating a key for owner recognition and recognition and a method of generating a climb for user recognition described above. You.
- the owner or the user relates to the reproduction of the ROM-RAM medium, the owner or the user inputs the key for the ROM-RAM medium.
- the comparing unit 2109 compares a key recorded in the subcode of the ROM unit and the RAM unit with a key input by the owner or the user. Then, the result of the match or mismatch is output to the output unit 212 through the switch 211 and sent to the interface 439 of FIG.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Optical Recording Or Reproduction (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNA2008100024405A CN101197168A (zh) | 2002-08-30 | 2002-08-30 | 存储装置 |
JP2004534051A JP3923979B2 (ja) | 2002-08-30 | 2002-08-30 | Rom−ram媒体及び、その記憶装置 |
CN02829428.9A CN1650363A (zh) | 2002-08-30 | 2002-08-30 | Rom-ram介质及其存储装置 |
PCT/JP2002/008833 WO2004023481A1 (ja) | 2002-08-30 | 2002-08-30 | Rom−ram媒体及び、その記憶装置 |
AU2002328389A AU2002328389A1 (en) | 2002-08-30 | 2002-08-30 | Rom-ram medium and storage device thereof |
US11/033,242 US7173894B2 (en) | 2002-08-30 | 2005-01-11 | ROM-RAM medium and storage device thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2002/008833 WO2004023481A1 (ja) | 2002-08-30 | 2002-08-30 | Rom−ram媒体及び、その記憶装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/033,242 Continuation US7173894B2 (en) | 2002-08-30 | 2005-01-11 | ROM-RAM medium and storage device thereof |
Publications (1)
Publication Number | Publication Date |
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WO2004023481A1 true WO2004023481A1 (ja) | 2004-03-18 |
Family
ID=31972281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/008833 WO2004023481A1 (ja) | 2002-08-30 | 2002-08-30 | Rom−ram媒体及び、その記憶装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7173894B2 (ja) |
JP (1) | JP3923979B2 (ja) |
CN (2) | CN101197168A (ja) |
AU (1) | AU2002328389A1 (ja) |
WO (1) | WO2004023481A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006109716A1 (ja) * | 2005-04-07 | 2006-10-19 | Matsushita Electric Industrial Co., Ltd. | 記録媒体、再生装置、記録方法、再生方法 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2002219606A1 (en) * | 2002-01-11 | 2003-07-30 | Fujitsu Limited | Optical information recording medium |
AU2003201839A1 (en) * | 2002-04-01 | 2003-10-23 | Sony Corporation | Recording method for recording data on a storage medium |
KR20060009353A (ko) * | 2003-05-14 | 2006-01-31 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 데이터 매체로의 액세스 제어 |
EP1688945A1 (en) * | 2003-11-28 | 2006-08-09 | Fujitsu Limited | Optical disc and recording/reproduction device |
JP2006020253A (ja) * | 2004-07-05 | 2006-01-19 | Ricoh Co Ltd | 情報管理システム、情報管理方法、記録媒体及びプログラム |
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JPH06349248A (ja) * | 1993-06-07 | 1994-12-22 | Fuji Photo Film Co Ltd | ハイブリッドディスクへのデータ記録方法 |
JPH0757264A (ja) * | 1993-08-20 | 1995-03-03 | Fujitsu General Ltd | コンカレントrom/ram光ディスク装置 |
JPH0982023A (ja) * | 1995-09-12 | 1997-03-28 | Toshiba Corp | 情報記録再生装置 |
JP2000123479A (ja) * | 1998-10-15 | 2000-04-28 | Ricoh Co Ltd | 記憶媒体およびプログラム起動方法 |
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JPH0765375A (ja) | 1993-08-20 | 1995-03-10 | Fujitsu General Ltd | コンカレントrom/ram光ディスク装置 |
JP3249031B2 (ja) * | 1995-06-01 | 2002-01-21 | 株式会社リコー | 光情報記録再生方法 |
JPH09312039A (ja) | 1996-03-21 | 1997-12-02 | Kichinosuke Nagashio | 著作権保護機能付記録メディア |
JP3716514B2 (ja) | 1996-10-09 | 2005-11-16 | ソニー株式会社 | 再生システム |
JP2001135023A (ja) * | 1999-11-02 | 2001-05-18 | Matsushita Electric Ind Co Ltd | Dvd貸与システムおよび方法 |
JP2002150675A (ja) | 2000-11-06 | 2002-05-24 | Sony Corp | 記録装置及び方法、再生装置及び方法、並びに記憶媒体 |
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CN1625771A (zh) * | 2002-04-15 | 2005-06-08 | 富士通株式会社 | 光学存储装置和光学存储介质的读出/写入方法 |
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2002
- 2002-08-30 CN CNA2008100024405A patent/CN101197168A/zh active Pending
- 2002-08-30 AU AU2002328389A patent/AU2002328389A1/en not_active Abandoned
- 2002-08-30 WO PCT/JP2002/008833 patent/WO2004023481A1/ja active Application Filing
- 2002-08-30 JP JP2004534051A patent/JP3923979B2/ja not_active Expired - Fee Related
- 2002-08-30 CN CN02829428.9A patent/CN1650363A/zh active Pending
-
2005
- 2005-01-11 US US11/033,242 patent/US7173894B2/en not_active Expired - Fee Related
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JPH06349248A (ja) * | 1993-06-07 | 1994-12-22 | Fuji Photo Film Co Ltd | ハイブリッドディスクへのデータ記録方法 |
JPH0757264A (ja) * | 1993-08-20 | 1995-03-03 | Fujitsu General Ltd | コンカレントrom/ram光ディスク装置 |
JPH0982023A (ja) * | 1995-09-12 | 1997-03-28 | Toshiba Corp | 情報記録再生装置 |
JP2000123479A (ja) * | 1998-10-15 | 2000-04-28 | Ricoh Co Ltd | 記憶媒体およびプログラム起動方法 |
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WO2006109716A1 (ja) * | 2005-04-07 | 2006-10-19 | Matsushita Electric Industrial Co., Ltd. | 記録媒体、再生装置、記録方法、再生方法 |
US7991270B2 (en) | 2005-04-07 | 2011-08-02 | Panasonic Corporation | Recording medium, reproducing device, recording method, and reproducing method |
US8059942B2 (en) | 2005-04-07 | 2011-11-15 | Panasonic Corporation | Recording medium, reproducing device, recording method, and reproducing method |
US8116613B2 (en) | 2005-04-07 | 2012-02-14 | Panasonic Corporation | Recording medium, reproducing device, recording method and reproducing method |
US8548298B2 (en) | 2005-04-07 | 2013-10-01 | Panasonic Corporation | Recording medium, reproducing device, recording method and reproducing method |
Also Published As
Publication number | Publication date |
---|---|
US20050141401A1 (en) | 2005-06-30 |
JP3923979B2 (ja) | 2007-06-06 |
US7173894B2 (en) | 2007-02-06 |
AU2002328389A1 (en) | 2004-03-29 |
CN1650363A (zh) | 2005-08-03 |
JPWO2004023481A1 (ja) | 2006-01-05 |
CN101197168A (zh) | 2008-06-11 |
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