WO2007049745A1 - Support d'enregistrement d'informations, dispositif et procede d'enregistrement d'informations et programme informatique - Google Patents

Support d'enregistrement d'informations, dispositif et procede d'enregistrement d'informations et programme informatique Download PDF

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Publication number
WO2007049745A1
WO2007049745A1 PCT/JP2006/321499 JP2006321499W WO2007049745A1 WO 2007049745 A1 WO2007049745 A1 WO 2007049745A1 JP 2006321499 W JP2006321499 W JP 2006321499W WO 2007049745 A1 WO2007049745 A1 WO 2007049745A1
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WO
WIPO (PCT)
Prior art keywords
recording
information
area
control method
recorded
Prior art date
Application number
PCT/JP2006/321499
Other languages
English (en)
Japanese (ja)
Inventor
Kazuo Kuroda
Tsuyoshi Hasebe
Tsuyoshi Namiki
Masayoshi Yoshida
Shinji Suzuki
Masahiro Kato
Original Assignee
Pioneer Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pioneer Corporation filed Critical Pioneer Corporation
Priority to JP2007542685A priority Critical patent/JPWO2007049745A1/ja
Publication of WO2007049745A1 publication Critical patent/WO2007049745A1/fr

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Classifications

    • 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
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • 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
    • 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
    • G11B20/1258—Formatting, e.g. arrangement of data block or words on the record carriers on discs where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV discs
    • 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
    • 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
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24073—Tracks
    • G11B7/24082—Meandering
    • 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
    • G11B2020/1238—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 track, i.e. the entire a spirally or concentrically arranged path on which the recording marks are located
    • G11B2020/1239—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 track, i.e. the entire a spirally or concentrically arranged path on which the recording marks are located the track being a pregroove, e.g. the wobbled track of a recordable optical disc
    • 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
    • G11B2020/1242—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 the area forming one or more zones, wherein each zone is shaped like an annulus or a circular sector
    • G11B2020/1244—CAV zone, in which a constant angular velocity is used
    • 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
    • G11B2020/1242—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 the area forming one or more zones, wherein each zone is shaped like an annulus or a circular sector
    • G11B2020/1245—CLV zone, in which a constant linear velocity is used
    • 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
    • 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

Definitions

  • Information recording medium information recording apparatus and method, and computer program
  • the present invention relates to an information recording medium such as an optical disc that can be recorded and reproduced by irradiating laser light such as a DVD (Digital Versatile Disc), a BD (Blu-ray Disc), and a CD (Compact Disc).
  • the present invention relates to an information recording apparatus and method for the information recording medium, and a technical field of a computer program. Background art
  • DVD video content (hereinafter referred to as “encryption” as appropriate) is disclosed in Patent Document 1 and the like, in which encrypted information is recorded in advance on a record-type information recording medium such as a DVD—RZRW and sold.
  • a distribution system that distributes "content”).
  • This distribution system uses information recording media that have the same physical structure as conventional recording media such as DVD-RZRW.
  • the CLV (Constant Linear Velocity) control method is used in the management area such as the control data zone in the recording type information recording medium in which wobbles for obtaining the rotational speed control signal for recording are formed.
  • Encrypted information applied to read-only information recording media such as DVD-ROM is pre-recorded before sales.
  • the CLV control method is a rotational speed control method in which the linear velocity is constant when information is recorded on an optical disk.
  • the CAV (Constant Angular Velocity) control method is a rotational speed control method in which the angular velocity is constant, that is, the rotational speed per unit time is constant when information is recorded on the optical disc.
  • Patent Document 3 discloses a technique relating to the data structure of the file system on the hybrid optical disk.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2001-307427
  • Patent Document 2 Japanese Patent Laid-Open No. 2001-357001
  • Patent Document 3 Japanese Patent Laid-Open No. 2003-272309
  • Patent Document 4 Japanese Patent Laid-Open No. 2000-331412
  • Non-Patent Document 1 “DVD Content Protection” Toshiba Review Vol.58, No6 (2003)
  • the present invention has been made in view of the above-described problems, for example, and it is possible to appropriately realize copyright protection of recorded information such as content in a no-information type information recording medium.
  • the information recording medium of the present invention is capable of detecting at least one of clock information (Wobble) and address information (LPP) for recording or reproducing the recorded information.
  • a part of the recording information can be recorded by a first rotational speed control method (for example, CAV or zone CAV), and the second recording area is pre-recorded by a second rotational speed control method (CLV).
  • a first rotational speed control method for example, CAV or zone CAV
  • CLV second rotational speed control method
  • the relationship between the radial position and the address in the second recording area is formatted so that the first recording area does not exist and the control information is programmed by the second rotation control method (CLV).
  • CLV second rotation control method
  • the information recording medium of the present invention in the first recording area, for example, clock information based on wobbling of a recording track, and land information, for example, for recording or reproducing the recording information.
  • Detectable control information that is at least one of address information such as pre-pit (Land Pre Pit) is not preformatted.
  • the recorded information is recorded under a first rotational speed control method (CAV) such as a CAV control method. Part can be recorded, or pre-recorded in advance.
  • CAV rotational speed control method
  • first recording areas located at least on the inner circumference side of the first recording area described above.
  • this control information is preformatted.
  • at least a part of the second recording area that occupies most of the recording area such as the data area is recorded in addition to the recording information under the second rotational speed control method (CLV) such as the CLV control method.
  • CLV second rotational speed control method
  • the first rotation speed control method and the second rotation speed control method (CLV) are, for example, a zone CAV in which the speed is simply changed stepwise according to the radial position, and a normal CAV. Partially different rotational speed control methods may be used.
  • a playback device that is set to one rotation control method such as CLV and CAV has a rotation control method that is entirely different to the extent that an information recording medium recorded by the other rotation control method cannot be played back. May be.
  • a general commercially available information recording apparatus can record recorded information only on an information recording medium such as an optical disc, for example, under a second rotational speed control method (CLV) such as a CLV control method. is there. Therefore, for example, the first rotation speed control method (CAV).
  • CLV rotational speed control method
  • CAV first rotation speed control method
  • the relationship between the radial position and the address in the second recording area is such that the first recording area does not exist and the control information is preformatted by the second rotation control method (CLV).
  • the predetermined relationship between the radial position and the address is substantially the same.
  • “substantially the same” according to the invention may mean that they are completely the same, and may be equivalent to the extent that they fall within a predetermined allowable range.
  • this boundary point may be a position indicating the boundary between the first method area and the second method area, or a position indicating the boundary between the first recording area and the second recording area. Also good.
  • the information recording medium that is the electronic distribution destination and the target of the copying is the power of being a legitimate recording type information recording medium or It is possible to more easily and accurately identify whether the information recording medium has been illegally copied.
  • a recording type information recording medium for example, a part of recorded information pre-recorded in the first recording area in advance by a commercially available information recording apparatus may be altered to unintended information. Almost or completely impossible. For example, unintended information such as illegal encryption key information can be recorded almost or completely in the first recording area.
  • a general mastering device that manufactures an information recording medium provided with a second recording area for recording the recording information by the second rotational speed control method in which control information such as wobble is preformatted in the entire recording area
  • control information such as wobble
  • a general mastering device preformats control information with an amplitude of zero in order to form a first recording area for recording information by the first rotational speed control method (CAV).
  • the first rotational speed control system is a rotational speed control system in which the angular speed is constant at least in a certain section
  • the second rotational speed control system is a rotational speed control method in which the linear velocity is constant.
  • the first method area (or the first recording area) and the second method area (or the second recording area) are based on the rotational speed control method in which the angular velocity or the linear velocity is constant. It is possible to make the boundary address at the boundary point between and discontinuous or continuous with higher accuracy.
  • a first method area recorded by the first rotation speed control method (CAV) and a second method recorded by the second rotation speed control method At the boundary point with the method area, the predetermined position between the radial position and the address when the control information is preformatted by the rotation control method (CLV) in which the linear velocity is constant is used. Satisfy the relationship.
  • the rotation control is performed so that the boundary velocity at the boundary point between the first method area (or the first recording area) and the second method area (or the second recording area) is a constant linear velocity.
  • CLV the method
  • a part of the recording information includes the first recording area and the second recording area based on the first rotational speed control method (CAV). It is recorded across.
  • CAV rotational speed control method
  • the information recording apparatus described later acquires clock information and address information in the second recording area having a predetermined length in which control information such as wobble is preformatted. It is possible to synchronize (lock) with the recording clock held by the information recording apparatus. As a result, the information recording apparatus described later records a part of the recording information in the second recording area with higher accuracy in addition to the first recording area based on the first rotational speed control method (CAV). It is possible.
  • CAV rotational speed control method
  • the boundary points have a continuous physical recording unit in a recording area positioned before and after the boundary point.
  • the tracking servo is stabilized and the servo characteristics are improved when a recording or reproducing process is performed by an information recording apparatus described later. It is possible to make it.
  • the “physical recording unit” according to the present invention may mean a recording unit capable of defining a data amount such as wobble.
  • the physical recording units in the recording area located before and after the boundary point are discontinuous.
  • the first method area (or the first recording area) and the second data area are based on the fact that it is not a delimiter of a predetermined amount of data (for example, one ECC block or one sector) corresponding to the physical recording unit.
  • the boundary address at the boundary point with the method area (or the second recording area) can be made discontinuous with higher accuracy.
  • the physical recording unit is a recording unit capable of correcting an error code.
  • the physical recording unit may be configured to be a recording unit to which a minimum address is allocated.
  • the first method area (or the first recording area) and the second method area are based on the fact that the minimum address as the physical recording unit is not a division of the recording unit. It is possible to make the boundary address at the boundary point with (or the second recording area) discontinuous with higher accuracy. Furthermore, in general information recording and playback devices, ECC errors are likely to be induced at this boundary point, so that illegal recording or playback processing that does not conform to the copyright protection system can be prevented more effectively. It is.
  • a recording or reproducing process is performed by an information recording device described later. It is possible to stabilize the tracking servo and improve the servo characteristics when processing is performed.
  • the boundary address (sector address) of the first system area and the boundary address (pre-address) of the second system area are continuous. do not do.
  • the second recording area is located at a position away from the boundary point by a predetermined length (16ECC), in addition to the first rotational speed control method, or instead.
  • a buffer area capable of recording the recording information by the second rotational speed control method is provided.
  • an error in time accuracy of the recording clock due to, for example, a crystal constituting a reference clock signal generator for generating a recording clock
  • the buffer area can absorb the deviation of the recording or reproducing position indicated by the address based on the positional accuracy error due to the variation of the track pitch on the signal surface of the information recording medium.
  • the data amount of the buffer area may be a predetermined amount (200ECC).
  • the buffer area such as the 200 ECC block, for example, more appropriately absorbs the deviation in the recording or reproduction position indicated by the address based on the positional accuracy error by the buffer area. Is possible.
  • predetermined data in the first recording area (no wobble section), predetermined data (FS, dummy data, encrypted information, and other information) is further provided. Pre-recorded.
  • predetermined data such as a disc key (encrypted information) of the DVD content is pre-recorded, for example. It is possible to enjoy various effects. That is, a general information recording / reproducing apparatus cannot detect a wobble signal as clock information in a first recording area in which predetermined data such as a disc key is pre-recorded.
  • a general information recording / reproducing apparatus is substantially the same as the reproduction-only information recording medium such as a DVD-ROM that is not distinguished from the reproduction-only information recording medium. It is possible to execute special programs such as applications that support playback-only information recording media.
  • special program according to the present invention.
  • a predetermined program pre-recorded in the first recording area such as a program for reproducing recorded information such as a DVD content while decrypting it.
  • This special program may be pre-recorded in the first recording area, or may be recorded in a recording area other than the first recording area.
  • the wobble signal can be detected as the clock information described above, so that general recording processing can be performed.
  • control information such as clock information is not pre-formatted in the first recording area
  • a valid encryption system is used by a general information recording device.
  • Predetermined data force such as encryption information based on, almost never or completely being overwritten or altered by unintended illegal information.
  • a judgment area for judging whether or not power to permit playback of recorded information is first accessed. Area
  • the conventional player since the wobble is not pre-formatted in the first recording area, the conventional player (general information recording / reproducing device) cannot detect the wobble. Therefore, the general information recording / reproducing device reproduces at least the judgment area.
  • the information recording medium of the present invention cannot be distinguished from a general reproduction-only information recording medium such as a DVD-ROM.
  • the conventional reproducing apparatus can perform the reproducing process on the information recording medium of the present invention in the same manner as a general reproduction-only information recording medium.
  • the first recording area is further included in, for example, a user data area in which recording information can be recorded by a user
  • the following effects can be obtained. That is, a conventional player (general information recording / reproducing device) cannot detect a wobble signal as clock information in, for example, a first recording area in which title information of a DVD content is recorded. Accordingly, a general information recording / reproducing apparatus is generally similar to a reproduction-only information recording medium that is not distinguished from a reproduction-only information recording medium such as a DVD-ROM. Playback resume processing (resume processing) can be performed.
  • the “reproduction resume process (resume process)” is an information reproducing apparatus such as a DVD player, for example, during the reproduction process of the information recording medium.
  • the process of replaying the recorded information such as the content being replayed from the middle of the replay is performed again. means.
  • the information reproducing apparatus firstly (1) an address indicating the reproduction position of the recorded information that was reproduced at the moment when the information recording medium was removed during reproduction; (2) Recorded information during playback, such as title information of recorded information, or (3) a data string indicating a predetermined position existing at the beginning of the user data area. Is stored in storage means such as an internal memory. Next, when the information recording medium is inserted again, the information reproducing apparatus records, for example, specific information such as title information, and (i) a wobble signal is detected as clock information. Whether or not (ii) the ability to reproduce the specific information.
  • the information reproducing apparatus (i) when a wobble signal is not detected as clock information in an area where the specific information is recorded, or (ii) when specific information such as title information can be reproduced, Playback can be resumed from the vicinity of the address indicating the playback position of the recorded information that is stored.
  • the predetermined data may be configured to be encryption key information for encrypting recorded information.
  • the predetermined data may be configured to be pre-recorded at least in the user data area.
  • the information recording apparatus of the present invention will be described below.
  • an information recording apparatus of the present invention is an information recording apparatus for recording the recording information on the above-described information recording medium of the present invention (including various aspects).
  • Recording means for recording the recording information setting means for setting the first rotational speed control method (CAV) or the second rotational speed control method (CLV) at the time of recording, and the second recording area
  • the recording means is controlled so as to record the other part of the recording information from the start position separated from the boundary point by a predetermined length (16ECC) by the set second rotational speed control method (CLV).
  • the boundary position force in the second recording area is also separated by a predetermined length (for example, 16ECC) by the recording means.
  • a predetermined length for example, 16ECC
  • the other part of the recorded information is recorded with an improved SN ratio.
  • the recording means applies the first rotational speed control method (CAV) from the first recording area to the second recording area to at least the start position. Based on this, a part of the recorded information is recorded.
  • CAV first rotational speed control method
  • control information such as wobble is preformatted, and in the second recording area of a predetermined length, clock information and address information are acquired and synchronized with the recording clock held by the information recording apparatus. It is possible to lock (lock).
  • the information recording device records a part of the recorded information in the second recording area with higher accuracy in addition to the first recording area. Is possible.
  • the information recording apparatus of the present invention can also adopt various aspects. [0060] (Information recording method)
  • an information recording method of the present invention includes an information recording medium for recording the recording information on the above-described information recording medium of the present invention (including various aspects).
  • An information recording method in a recording apparatus comprising: a recording unit configured to record the recording information on the information recording medium according to any one of claims 1 to 15; During recording, a setting step for setting the first rotational speed control method (CA V) or the second rotational speed control method (CLV) and a predetermined length (16 ECC) from the boundary point in the second recording area A first control step of controlling the recording means so as to record the other part of the recording information from the starting position separated by a second rotational speed control method (CLV), and the first control step; From the recording area to the second recording area A second control step of controlling the recording means so as to record a part of the recording information by the set first rotational speed control method (CAV) at least up to the start position. .
  • CA V first rotational speed control method
  • CLV second rotational speed control method
  • 16 ECC predetermined length
  • the information recording method of the present invention can also adopt various aspects.
  • a computer program for recording control of the present invention is a recording for controlling a computer provided in the above-described information recording apparatus of the present invention (including various aspects thereof).
  • a computer program for control which causes the computer to function as at least part of the recording unit, the setting unit, the first control unit, and the second control unit.
  • the computer program of the present invention if the computer program is read from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, and a hard disk that stores the computer program and then executed by the computer, Or the combination If the user program is executed after being downloaded to a computer via communication means, the above-described information recording apparatus of the present invention can be realized relatively easily.
  • a recording medium such as a ROM, a CD-ROM, a DVD-ROM, and a hard disk that stores the computer program and then executed by the computer, Or the combination If the user program is executed after being downloaded to a computer via communication means, the above-described information recording apparatus of the present invention can be realized relatively easily.
  • each computer program of the present invention can also adopt various aspects.
  • a computer program product in a computer-readable medium can be executed by a computer provided in the above-described information recording apparatus of the present invention (including various aspects thereof).
  • the program instruction is clearly embodied, and the computer is caused to function as at least part of the recording means, the setting means, the first control means, and the second control means.
  • the computer program product is read into a computer from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product, or
  • a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product
  • the computer program product which is a transmission wave
  • the computer program product may comprise a computer readable code (or computer readable instruction) that functions as the information recording apparatus of the present invention described above.
  • another information recording medium of the present invention has detectable control information that is at least one of clock information and address information for recording or reproducing the recorded information.
  • a part of the recording information can be recorded, and the second recording area is preformatted with control information based on the second rotational speed control method, and sandwiches the first recording area existing at a predetermined position 2
  • the relationship between the radial position and the address in each of the two second recording areas is that the first recording area does not exist and the control information is pre-formed by the second rotation control method (CLV).
  • CLV second rotation control method
  • an information recording medium of the present invention for example, based on address discontinuity or continuity at a boundary point between a first recording area and two second recording areas sandwiching the first recording area. ! /, For example, whether the information recording medium that is the electronic distribution destination and to be copied is a legitimate recording type information recording medium or an illegally copied information recording medium Can be identified more easily and with high accuracy.
  • a part of the recording information is based on the first rotation speed control method (CAV), and the first recording area and the second recording area
  • the physical recording units in the recording area located before and after the boundary point with the formula area are continuous.
  • the electronic distribution destination and the copy it is possible to more easily and accurately identify whether the information recording medium to be performed is a legitimate recording type information recording medium or an information recording medium on which illegal copying has been performed. Is possible.
  • a part of the recording information is based on the first rotation speed control method (CAV) and the first recording area and the second recording area
  • the physical recording units in the recording area located before and after the boundary with the formula area are not continuous.
  • the electronic distribution destination and the copy line can be identified simply and with high accuracy as to whether the information recording medium is a legitimate recording type information recording medium or an illegally copied information recording medium. Is possible. [0077]
  • the first recording area and the second recording area are provided.
  • a part of recording information such as encrypted information that can be recorded in the first recording area, that is, a secure state. Therefore, it becomes almost or completely impossible to create or manufacture a recording type information recording medium in which a part of the recording information such as encryption key information is illegally copied.
  • a recording means for example, it becomes possible to keep a part of the recording information such as encrypted information that can be recorded in the first recording area highly confidential, that is, to be in a secure state. Therefore, it becomes almost or completely impossible to create or manufacture a record-type information recording medium in which a part of recorded information such as encrypted information is illegally copied.
  • the information recording apparatus is used as the information recording medium described above, for example, Therefore, it is possible to maintain a high confidentiality of a part of the recording information such as encrypted information that can be recorded in the first recording area, that is, to secure the information. Therefore, it becomes almost or completely impossible to create or manufacture a recording-type information recording medium in which a part of recording information such as encrypted information is illegally copied.
  • FIG. 1 is a schematic plan view showing a basic structure of an optical disc having a plurality of recording areas according to an embodiment of an information recording medium of the present invention, and a radial direction associated with the schematic plan view.
  • FIG. 2 is a schematic conceptual diagram of a recording area structure in a direction.
  • FIG. 2 is a partially enlarged perspective view of a recording surface of an optical disc according to an embodiment of the information recording medium of the present invention.
  • FIG. 3 is a conceptual graph showing the relationship between a recording area of an optical disc according to an embodiment of the information recording medium of the present invention and an address that can specify the position of the recording area.
  • FIG. 4 is a diagram showing clock information and address information necessary for recording that can be obtained with a groove track wobbling force in an optical disc according to an embodiment of the information recording medium of the present invention.
  • One and other conceptual diagrams Figs. 4 (a) to 4 (d)).
  • ⁇ 5 Schematic one and other showing the wobble signal obtained for the first recording area force in one and other specific examples of the physical structure of the first recording area of the optical disc according to the embodiment of the information recording medium of the present invention It is a conceptual diagram (Fig. 5 (a) to Fig. 5 (d)).
  • FIG. 6 Recording area of wobbled section, which is a specific example of the first recording area of the present invention, and recording section of wobble, which is a specific example of the second recording area of the present invention. It is a schematic diagram which shows notionally the arrangement
  • FIG. 7 is a conceptual diagram schematically showing various characteristics when a CAV control method is applied to a general optical disc.
  • FIG. 8 is a conceptual diagram schematically showing various characteristics of a general optical disc when the CLV control method is applied.
  • FIG. 9 A schematic diagram schematically comparing the wobble wavelength when the CAV control method is applied to the wobble wavelength when the CLV control method is applied to a general optical disc (Fig. 9).
  • 9 (a)) is a conceptual diagram schematically showing the relationship between the wobble wavelength and 1ECC block in a general optical disc.
  • FIG. 10 One graph (Fig. 10 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and the address, as well as the first method area of the present invention, and Fig. 10 (b) is a graph schematically showing the relationship between the second method area and the rotation speed of the information recording medium. [11] The first method area and the second method area of the present invention , Another graph schematically showing the relationship with the address (FIG. 11 (a)), and the relationship between the first method area and the second method area of the present invention and the rotational speed of the information recording medium. Is another graph ( Figure 11 (b))
  • FIG. 12 is a block diagram showing an overall configuration of an information recording / reproducing apparatus according to the information recording apparatus of the present invention.
  • FIG. 13 is a flowchart showing the pre-recording operation principle in the pre-recording apparatus 200 according to the present embodiment.
  • FIG. 14 is a schematic diagram of the recording area shown in FIG. 14 (FIG. 14 (a) to FIG. 14 (b)).
  • FIG. 16 is a block diagram showing an overall configuration of an information recording apparatus that performs a recording operation and an information distribution apparatus that performs a distribution operation on the information recording medium of the present invention.
  • FIG. 17 is a flowchart showing various processes in the information recording apparatus and information distribution apparatus of the present invention.
  • FIG. 18 A graph (FIG. 18 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and the rotational speed of the information recording medium, and the present invention
  • FIG. 19 is a schematic diagram (FIG. 18 (b)) schematically showing the relationship between addresses in the first method area and the second method area.
  • FIG. 19 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
  • FIG. 20 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
  • FIG. 21 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
  • FIG. 1 is a schematic plan view showing the basic structure of an optical disc having a plurality of recording areas according to an embodiment of the information recording medium of the present invention, and the radial direction associated with the schematic plan view.
  • FIG. 2 is a schematic conceptual diagram of a recording area structure in FIG.
  • FIG. 2 is a partially enlarged perspective view on the recording surface of the optical disc according to the embodiment of the information recording medium of the present invention.
  • the optical disc 100 is, for example, (i) power calibration area according to the present embodiment centered on the center hole 1 on the recording surface of the disc main body having a diameter of about 12 cm as in the DVD.
  • PCA (ii) Recording Management Area RMA, (iii) Control Data Zone Lead-in area 101 with CDZ, (iv) Data area 102, (V) Lead-out area 103 It is configured with.
  • at least one recording layer is laminated on a transparent substrate (not shown) of the optical disc 100, for example.
  • tracks 50 such as a groove track and a land track are alternately provided in a spiral shape or a concentric shape with the center hole 1 as the center.
  • ECC (Error Correction Code) block 51 is a record information management unit capable of error correction of record information.
  • the optical disc according to the present embodiment is a so-called no-briddle type optical disc having both a recording area in a recordable information recording medium and a read-only area (playback-only area) in a read-only information recording medium. There may be.
  • the first recording area of the present invention may be provided on the inner periphery of the data area. A detailed description of the first recording area of the present invention will be described later.
  • the optical disc 100 is located below the disc-like transparent substrate 106, and thus the dye type or phase change constituting the information recording surface.
  • a recording layer 107 of a mold is laminated, and a reflective layer 108 is further laminated on the lower side.
  • Groove tracks GT and land tracks LT are alternately formed on the information recording surface, which is the surface force of the recording layer 107.
  • the laser beam LB is irradiated onto the groove track GT through the transparent substrate 106 as shown in FIG.
  • recording is performed on the recording layer 107 according to the recording data by irradiating the laser beam LB with the recording laser power.
  • the recording data recorded on the recording layer 107 is read by irradiating the laser beam LB with a reproduction laser power weaker than the recording laser power.
  • the groove track GT, land track LT, wobble 109, land pre-pit LPP, etc. will be described in detail later.
  • encryption information such as a title key based on an encryption system such as CSS, and encryption key content encrypted by the encryption key information such as the title key.
  • encryption key information such as a title key is encrypted with encryption key information such as a disk key or a disk key set.
  • the present invention is not particularly limited to an optical disc having such five areas.
  • the lead-in area 101 or the lead-out area 103 may be further subdivided.
  • FIG. 3 is a conceptual graph showing the relationship between the recording area of the optical disc according to the embodiment of the information recording medium of the present invention and the address at which the position of the recording area can be specified.
  • the vertical axis in FIG. 3 indicates address values such as sector numbers and land pre-pit addresses, for example, and the horizontal axis indicates the relative position in the radial direction of the optical disk.
  • a specific example of “address” according to the present invention for example, LBN (Logical Block Number), for example, a physical sector number (sector number) constituting an ECC block, or a land pre-pit address.
  • the recording area of the optical disc 100 is as described above.
  • (I) Power calibration area PCA (Ii) Recording Management Area RMA, (iii) Lead Data Area 101 with Control Data Zone CDZ, (iv) Data Area 102, and (V) Lead Out Area 103. It is configured.
  • Various attribute management information may be recorded in the RMA or CDZ.
  • the attribute management information includes (ii-1) information on recording characteristics such as optimum recording power, (ii-2) attribute information for specifying the type of medium, and (ii 3) various recording areas.
  • Various information for managing the information recording medium such as information for identifying the location of the information.
  • the address power that can uniquely identify the position of the recording area of the optical disc 100 described above for example, when the LBA or physical sector number (sector number) is used, the optical pickup power
  • the address in the recording area of the optical disc 100 may increase as the inner peripheral side force moves to the outer peripheral side (see the thick solid line in FIG. 3).
  • the address where the position of the recording area can be uniquely specified is, for example, a land pre-pit address
  • the optical pickup of the information recording / reproducing apparatus described later has an inner peripheral force on the outer peripheral side. As you move to, the address in the recording area of the optical disc 100 will decrease, and you may try again!
  • FIG. 4 is a schematic diagram and other conceptual diagrams showing clock information and address information necessary for recording that can be obtained in the wobbling force of the group track in the optical disc according to the embodiment of the information recording medium of the present invention (FIG. 4).
  • the optical disk according to the present embodiment has a group.
  • the Bratrack GT is oscillated with a constant amplitude and spatial frequency. That is, the group track GT is wobbling, and the period of the wobble 109 is set to a predetermined value.
  • the preformat address information may be recorded in advance by modulating the wobble 109 of the groove track GT by a predetermined modulation method such as frequency modulation or phase modulation.
  • the recording address on the optical disc is called an absolute time in pre-groove (ATIP) signal due to subtle frequency changes.
  • ATP absolute time in pre-groove
  • the two types of addressing described above ie, wobble 109 and ATIP or land pre-pit LPP, obtain information necessary for recording data such as disk rotation control during recording, generation of a recording clock, and recording address.
  • information necessary for recording data such as disk rotation control during recording, generation of a recording clock, and recording address.
  • the writing is performed in consideration of the recording parameters such as the optimum recording power of the laser light and the recording strategy.
  • the recording clock and recording address used for the recording are required.
  • FIG. 5 shows one example of the physical structure of the first recording area of the optical disc according to the embodiment of the information recording medium of the present invention and the wobble signal obtained in the first recording area force in another specific example. It is a schematic diagram and other conceptual diagrams (Fig. 5 (a) to Fig. 5 (d)).
  • the first wobble signal WB1 as shown in FIG. 5 (a) is obtained from the first recording area.
  • a recording area may be configured. More specifically, with the direction of the recording track as a reference, the amplitude of the wobble is decreased and AM (Amplitude Modulation) in front of the first recording area. On the other hand, at the rear of the first recording area, the amplitude of the wobble is increased to cause AM. Especially when the amplitude starts to decrease and changes when it starts to increase Is preferred. This is because it is possible to realize a simpler manufacturing process. More specifically, the comparator in the information recording / reproducing apparatus described later cannot detect the wobble signal from the bandpass filter.
  • the first wobble signal WB2 as shown in FIG. 5 (b) is obtained from the first recording area.
  • a recording area may be configured. More specifically, in all areas of the first recording area, the wobble may be configured to be almost or completely eliminated so that the wobble signal WB2 cannot be obtained.
  • more sophisticated control is required in the manufacturing process.
  • the comparator in the information recording / reproducing apparatus cannot detect the wobble signal from the bandpass filter, as in the specific example described above.
  • the first wobble signal WB3 as shown in Fig. 5 (c) is obtained from the first recording area.
  • a recording area may be configured.
  • the wobble frequency may be modulated from ⁇ to ⁇ and FM (Frequency Modulation) in all areas of the first recording area.
  • FM Frequency Modulation
  • the frequency may be increased to 2 times, 5 times, etc., or may be reduced to 1/2 times, 1Z5 times, etc.
  • the comparator in the information recording / reproducing apparatus cannot detect the wobble signal from the bandpass filter in the same way as the above specific example.
  • the first wobble signal WB4 as shown in FIG. 5 (d) is obtained from the first recording area.
  • a recording area may be configured.
  • At least one of the wobble frequency, amplitude, and phase may be modulated in the first recording area.
  • the comparator in the information recording / reproducing apparatus cannot detect the wobble signal from the band pass filter, as in the above specific example.
  • the recording track itself such as a groove track is stored in advance. You may comprise so that it may not form.
  • the comparator in the information recording / reproducing apparatus cannot detect the wobble signal from the bandpass filter in the same way as the above specific example.
  • a general information recording device does not acquire an accurate recording clock and recording address based on a signal from the wobble, so it is pre-recorded in the first recording area. Overwriting encrypted information and file systems with illegal unintentional information and tampering with unintentional information are almost or completely impossible.
  • FIG. 6 shows a recording area of a wobbleless section which is a specific example of the first recording area of the present invention, and a wobble which is a specific example of the second recording area of the present invention.
  • FIG. 6 is a schematic diagram conceptually showing an arrangement relationship with a recording area of a section.
  • the information recording medium of the present invention is (i) in the lead-in area 101, for example, the first no-wobble section such as the control data zone CDZ (that is, the first recording medium of the present invention).
  • the first no-wobble section such as the control data zone CDZ (that is, the first recording medium of the present invention).
  • One specific example of one recording area) and (ii) The inner area of the data area is provided with a second wobbleless section.
  • the other recording area is configured as a wobbled section (that is, a specific example of the second recording area of the present invention).
  • the file system FS la can be arranged in the wobbled section W1, for example, on the outer peripheral side.
  • the starting point of the recording area where this file system FS la can be placed is, for example, position information where the physical sector number is “30000h”, or position information where the LSN (Logical Sector Number) is “0”, for example. May be specified.
  • the radius position of the start point of the wobble-free section may be, for example, “24 (mm)”. In this case, the starting point of the file system FS la is at least less than 24 mm.
  • file system FS lb power for example, can be recorded later in time by the user.
  • the file system FSlb may be information with high expandability, that is, information relating to a logical hierarchy when recording information is recorded or reproduced, such as a directory structure, a file structure, or an anchor point.
  • FIG. 7 is a conceptual diagram schematically showing various characteristics when a CAV control method is applied to a general optical disc.
  • Fig. 8 is a conceptual diagram schematically showing various characteristics of a general optical disc when the CLV control method is applied.
  • Fig. 9 is a schematic diagram schematically comparing the wobble wavelength when the CAV control method is applied to the wobble wavelength when the CLV control method is applied to a general optical disk (Fig. 9).
  • FIG. 10 is a graph (FIG. 10 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and addresses, and the first method area of the present invention.
  • FIG. 10B is a graph schematically showing the relationship between the rear and second system areas and the rotation speed of the information recording medium.
  • FIG. 11 shows another graph (FIG. 11 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and addresses, and the first method area of the present invention.
  • FIG. 11 is another graph (FIG. 11 (b)) schematically showing the relationship between the second method area and the rotation speed of the information recording medium.
  • Figures 10 (a) and 11 (a) are graphs when the address increases, but even if the address decreases, the slope of the rate of change of the address on the graph can be reversed. Oh ,.
  • the angular velocity of the CAV control method or the like is constant. Therefore, even if the wobble 109 for obtaining the rotational speed control signal for recording is not formed, the pre-recording device that performs pre-recording is used. Only then, the encrypted information can be pre-recorded in the correct position. Specifically, it is possible to pre-record a recording mark having a desired length constituting the encryption information at an accurate position.
  • the CAV control method is a rotational speed control in which the angular speed is constant, that is, the rotational speed per unit time is constant when information is recorded on the optical disc. It is a method. Therefore, in the CAV control method, the linear velocity changes during recording on the inner and outer circumferences of the optical disc. For this reason, it is possible to simplify the control of the rotation speed of the spindle motor.
  • the size of the control data zone CDZ in the radial direction is very small, about 200 tracks, on the inner periphery of the optical disk. Therefore, when recording the encryption key information in the control data zone CDZ to which the CAV control method is applied, it is almost or completely necessary to change the recording parameters such as the recording strategy according to the change of the linear velocity. Nah ...
  • the CLV control method is applied to the recording area of the wobbled section of the optical disc 100 according to the present embodiment (that is, one specific example of the second recording area of the present invention).
  • the number of revolutions per unit time can be increased on the inner circumference side of the optical disc 100, and the number of revolutions per unit time can be lowered on the outer circumference side. Therefore, when recording information in the recording area of the wobbled section, the rotational speed of the spindle motor is controlled corresponding to the radial position of the optical disk based on the recording rotational speed control signal obtained from the wobble.
  • the linear velocity can be kept constant.
  • the wobble wavelength L2 in the recording area of the wobbled section to which the CLV control method is applied can be made different.
  • one sync frame “lsyn” is composed of eight wobbles.
  • One sector “lsector” is composed of 26 sync frames.
  • One ECC block is composed of 16 sectors.
  • One ECC block is 32 (KB: Kilo bytes).
  • an address represented by a sector or ECC block is used. Is defined based on the wobble wavelength. Specifically, an address corresponding to a certain length of a recording track is specified based on a wobble corresponding to a physical recording unit that can specify an address to which a CAV control method is applied and whose wavelength is “L1”. The case where the wavelength is “L2” and the case where it is specified based on the wobble to which the CLV control method is applied is different.
  • the recording process is performed by the CAV control method.
  • the second method area A2 radius position is on the outer periphery side from the point, or the radius position is on the inner periphery side from the point a
  • the recording process is performed. Therefore, the first method area A1 recorded between the CAV control method (between the “& point” radius position) and the second method area A2 recorded with the CLV control method (the radius position is point).
  • the boundary address (sector address) of the first method area A1 is the same as the boundary address (pre-address) of the second method area A2 at the boundary point with the outer periphery side or the radial position on the inner periphery side from the “a point”. They can be different or roughly matched. Specifically, at the boundary point where the radial position is “a point”, the address of the second method area A2 and the address of the first method area A1 are almost the same! /, And the rotation speed is also It is almost the same. On the other hand, the boundary address at the outer peripheral edge “b” of the first method area A1 takes the value “Ab”, and the boundary address at the inner peripheral edge “c” of the second method area A2 is “Ac”. Is discontinuous. At the same time, the number of revolutions at the outer peripheral end “b” of the first method area A1 and the number of revolutions at the inner peripheral end of the second method area A2 do not match and are discontinuous.
  • the first method area A1 (the radius position is between "a point” and "b point”). ) Is recorded by the CAV control method. Power! From the end of this first method area A1, in the second method area 8 2 (radius position is “outside”), based on the pre-address preformatted by the CLV control method, A recording process is performed.
  • the first method area A1 recorded between the CAV control method (between the “& point” radius position) and the second method area A2 recorded using the CLV control method (the radius position is “point”) Side or radial position is ⁇ a It is possible to make the boundary address (sector address) of the first method area Al substantially coincide with the boundary address (pre-address) of the second method area A2 at the boundary point with the inner periphery side of the “point”. Note that the dotted line in Fig. 11 (a) indicates the pre-address preformatted by the CLV control method when the first method area A1 (the radius position is between "a point” and "b point”) does not exist. Show.
  • the boundary address at the outer edge “b” of the first method area A1 takes the value “Ab”
  • the number of revolutions at the outer peripheral end “b” of the first method area A1 and the number of revolutions at the inner peripheral “c point” of the second method area A2 match and are continuous.
  • the information recording medium that is the electronic distribution destination and to be copied is a legitimate recording type information recording medium. It is possible to more easily and accurately identify whether or not the information recording medium has been illegally copied.
  • a general information recording / reproducing apparatus is pre-recorded with predetermined data such as a disc key, that is, encryption key information, for example!
  • predetermined data such as a disc key, that is, encryption key information, for example!
  • a wobble signal cannot be detected as clock information. Therefore, a general information recording / reproducing apparatus does not distinguish from a reproduction-only information recording medium such as a DVD-ROM, for example, and generally corresponds to the information-recording medium of the present invention.
  • the aforementioned special program such as an application corresponding to a reproduction-only information recording medium. Note that this special program may be pre-recorded in the recording area of the section without wobble, or may be recorded in a recording area other than the recording area of the section without wobble.
  • a general information recording / reproducing apparatus cannot detect a wobble signal as clock information in a recording area of a wobbleless section. It is impossible to rewrite predetermined data such as encryption key information pre-recorded in the recording area. Therefore, for example, copyright protection of the information recording medium can be realized.
  • the wobble signal can be detected as the clock information described above, so that general recording processing can be performed.
  • a determination area for determining whether or not the power to allow playback of recorded information is first accessed. If the area is included in the recording area of the wobble-free section, it is possible to enjoy the following effects. That is, since the wobble is not preformatted in the recording area of the no-wobble section, the conventional player (general information recording / reproducing apparatus) cannot detect the wobble. Therefore, the general information recording / reproducing apparatus has at least the determination area. In the reproduction processing in the above, it is impossible to distinguish between the information recording medium of the present invention and a general information recording medium dedicated to reproduction such as a DVD-ROM. As a result, the conventional reproducing apparatus can perform the reproducing process on the information recording medium of the present invention in the same manner as a general reproduction-only information recording medium.
  • a conventional player (general information recording / reproducing device) records, for example, title information of DVD content and is recorded as clock information in a recording area of a section without a wobble. Bull signal cannot be detected. Therefore, a general information recording / reproducing apparatus does not distinguish from a reproduction-only information recording medium such as a DVD ROM, for example, and generally corresponds to the information-recording medium of the present invention. It is possible to perform the above-mentioned reproduction restart processing (resume operation).
  • the information reproducing apparatus first (1) an address indicating the reproduction position of the recorded information that was reproduced at the moment when the information recording medium was removed during reproduction, (2) Recorded in the middle of playback such as title information of recorded information, or (3) a data string indicating a predetermined position existing at the beginning of the user data area.
  • Specific information that can specify recording information is stored in a storage means such as an internal memory.
  • the information reproducing apparatus records, for example, specific information such as title information, and (i) a wobble signal is detected as clock information. Whether or not (ii) the ability to reproduce the specific information.
  • the information reproducing apparatus (i) when a wobble signal is not detected as clock information in an area where the specific information is recorded, or (ii) when specific information such as title information can be reproduced, Playback can be resumed from the vicinity of the address indicating the playback position of the recorded information that is stored.
  • the information recording / reproducing apparatus 200a may include a pre-recording apparatus.
  • FIG. 12 is a block diagram showing the overall configuration of the information recording / reproducing apparatus according to the information recording apparatus of the present invention.
  • pit data DP synchronized with the first clock signal C K1 is recorded according to the length of the recording mark.
  • the recording mark is a pit
  • the track is composed of a pit row.
  • the track has a meandering shape according to the wobble signal WB.
  • the wobble signal WB is the first clock Is synchronized with the CK1 signal.
  • the information recording / reproducing apparatus 200a includes an optical pickup 202 that irradiates the optical disc 100 with a reproduction beam and outputs a signal corresponding to the reflected light, a spindle motor 203 that controls the rotation of the optical disc 100, and a servo unit 222.
  • the servo unit 222 is supplied with the first clock signal CK1 and the pit synchronization signal SYNCp. In synchronization with these signals, the servo unit 222 executes a spindle servo that controls the rotation of the spindle motor 203 and a focus servo and a tracking servo that are relative position controls of the optical pickup 202 with respect to the optical disc 100.
  • the optical pickup 202 includes a laser diode that irradiates a reproduction beam, and a quadrant detection circuit (not shown).
  • the quadrant detection circuit divides the reflected light of the reproduction beam into four regions 1A, 1B, 1C, and ID shown in FIG. 12, and outputs a signal corresponding to the light amount of each region.
  • the head amplifier 204 amplifies each output signal of the optical pickup 202, and the divided read signal la corresponding to the area 1A, the divided read signal lb corresponding to the area IB, the divided read signal lc corresponding to the area 1C, and the area The divided read signal Id corresponding to the ID is output.
  • the optical pickup 202 and the head amplifier 204 correspond to the optical pickup means according to the present invention.
  • the sum generation circuit 210 adds the divided read signals la, lb, lc, and Id, and serves as an adder circuit that outputs the sum read signal SRF.
  • the total read signal SRF is a signal indicating the length of the recording mark.
  • the pit data demodulation circuit 211 reproduces the pit data DP based on the total read signal SRF and also generates the first clock signal CK1. More specifically, the pit data DP is demodulated using a predetermined table to generate reproduction data. For example, when EFM modulation is adopted as a modulation method, a process of converting 14-bit pit data DP into 8-bit reproduction data is performed. Further, a descrambling process for rearranging the order of the reproduction data in accordance with a predetermined rule is executed, and processed reproduction data is output.
  • the reproduction data obtained in this way is supplied to the pit data correction circuit 212 shown in FIG. 12, where it is subjected to error correction processing, interpolation processing, etc., and then stored in the nother 213. .
  • the interface 214 sequentially reads out the data stored in the buffer 213. Convert to a fixed output format and output to an external device. Furthermore, various data are input / output via the interface 214 to / from a line connection device (described later) connected to the external network 400, for example.
  • the push-pull signal generation circuit 220 calculates (la + Id) (lb + lc) and generates a push-pull signal.
  • the component (la + ld) corresponds to the regions 1A and 1D on the left side with respect to the reading direction, while the component (lb + lc) corresponds to the regions 1B and 1C on the right side with respect to the reading direction. That is, if the playback beam is biased to the left with respect to the pit, the push-pull signal is positive with respect to the center of amplitude, and if the playback beam is located at the center of the pit, the value of the push-pull signal is centered on the amplitude.
  • the push-pull signal becomes negative with respect to the amplitude center.
  • the relative position of the playback beam and the pit changes according to the meandering of the track, and the value of the push-pull signal indicates the relative position of the playback beam and the pit. That is, the push-pull signal is a signal corresponding to the meandering of the track.
  • the push-pull signal is output to the servo unit 222 via the low-pass filter 221.
  • the servo unit 222 performs tracking control based on the push-pull signal.
  • the push-pull signal is supplied to the band pass filter 223.
  • the pass band of the band-pass filter 223 is set so that the wobble signal WB obtained by spread spectrum modulation of the wobble data DW can be extracted from the push-pull signal during recording. Therefore, the band-pass filter 223 constitutes the above-described detection means together with the push-pull signal generation circuit 220, and the output signal thereof is a reproduction of the wobble signal WB from the optical disc 100.
  • the comparator 224 cannot detect the recording clock and the recording address in the special area according to the present invention when attempting to write illegally to the second recording information recording area. Since an error occurs and the recording operation is stopped, it is possible to prevent illegal writing to the second recording information recording area regardless of the specifications of the information recording / reproducing apparatus including the pre-recording apparatus and the recording control procedure. Become. That is, the PLL (Phase Locked Loop) can be made uncontrollable.
  • the PLL Phase Locked Loop
  • the LPP detection circuit 230 detects the LPP signal based on the output signal A from the comparator 224 and the first clock signal CK1 generated by the pit data demodulation circuit 211. It is configured to be possible.
  • the LPP signal B can be output to the LPP demodulation circuit 230 and the servo unit 222.
  • the LPP demodulation circuit 230 is configured to be able to demodulate the LPP signal B into preformat address information.
  • the preformat address information can be output to the error correction circuit 229.
  • the error correction circuit 229 performs error correction on the preformat address information demodulated by the LPP demodulation circuit 230.
  • the CPU 250 performs overall control of each component of the information recording / reproducing device 200a.
  • FIG. 13 is a flowchart showing the pre-recording operation principle in the pre-recording apparatus 200 according to the present embodiment.
  • FIG. 14 is a schematic diagram of the recording area (FIGS. 14 (a) to 14 (b)) schematically showing the transition of the pre-recorded recording area in the information recording medium of the present invention.
  • step S 101a when the optical disc 100 is loaded, first, a seek operation is performed by the optical pickup 202 under the control of the CPU (Central Processing Unit) 250 of the pre-recording apparatus 200 (step S 101a ).
  • CPU Central Processing Unit
  • step S102a it is determined whether or not the optical disc 100 is an optical disc for content distribution.
  • various management information necessary for the recording operation on the optical disc 100 is determined or acquired (step S103a). More specifically, the OPC process is performed to determine the optimum recording power and the recording strategy pattern. The presence or absence of an emboss pit is detected.
  • the start address information power indicating the start position of the control data zone CDZ to which the CAV control method is applied is also acquired preformat address information power such as a land pre-pit.
  • step S104a it is determined whether or not content has been recorded on the optical disc 100 (step S104a).
  • step S104a when content is not recorded on the optical disc 100 (step S104a: No), for example, when searching for a predetermined address for pre-recording encryption key information, Both prepare for pre-recording (step S 105a).
  • step S106a the address of the position where the recording process is performed is detected based on the CLV control method.
  • step S106a if the address of the recording position is detected based on the CLV control method (step S106a: Yes), the linear velocity is made constant based on the CLV control method under the control of the CPU 250. (Step S107a).
  • step S106a if the address of the position where the recording process is to be performed is not detected (step S106a: No), step S106a is performed again.
  • a recording process is performed based on the CLV control method under the control of the CPU 250 (step S108a). Specifically, as shown in step S10 in FIG. 14 (a), the EBZ (Ext ended Border Zone) recording process is performed based on the CLV control method using the normal seamless link method. A 16-byte eye is also started from the position. Next, this EBZ recording process is completed after a recording process up to a position that is just before one ECC block of FS (File System) plus a length corresponding to 16 bytes.
  • FS Fe System
  • step S30 in FIG. 14 (c) there is a possibility that a recording process based on the CAV control method may be performed, and a recording process based on the CLV control method is performed. It is also possible to perform a recording process of a buffer area that may be detected. More specifically, the buffer area recording process starts from a position obtained by adding a length corresponding to 16 ECC to the end of the wobbleless section W1. Next, the buffer area recording process is terminated after a predetermined data amount recording process of, for example, about 200 ECC blocks.
  • step S109a under the control of the CPU 250, the address of the position where the recording process is performed is detected based on the CAV control method (step S109a).
  • step S109a when the address of the position to perform the recording process is detected (step S109a: Yes), the output value of the applied voltage or current of the spindle motor is fixed under the control of the CPU 250.
  • the angular velocity is made constant based on the CAV control method (step S110a).
  • step S109a when the address of the position where the recording process is performed is not detected (step S109a: No), step S109a is performed again.
  • step Sl la la a recording process is performed based on the CAV control method under the control of the CPU 250 (step Sl la la). Specifically, as shown in step S20 in Fig. 14 (b), the CDZ The recording process starts from the beginning (starting position) of the CDZ by 16 (or 32) ECC blocks. Next, the CDZ recording process is completed after a recording process up to a position obtained by adding about 3 sectors (6000 bytes) to the start position (start position) of the EBZ.
  • predetermined data recording processing based on the CAV control method may be performed. More specifically, this predetermined data recording process starts from the end of the recording area secured as the FS. Next, the recording process of the predetermined data is completed after the recording process up to the position obtained by adding a predetermined length to the start position of the buffer area described above.
  • step S112a it is determined whether or not all the recording processes have been completed under the control of the CPU 250 (step S112a).
  • step S112a: Yes when all the recording processes are completed (step S112a: Yes), a series of pre-recording operations is terminated.
  • step S 112a: No when all the recording processes are not completed (step S 112a: No), as described above, the address of the position where the recording process is performed is detected based on the CLV control method (step S 106a).
  • step S102a when it is determined that the content is not an optical disc for distribution (step S102a: No), and as a result of the determination in step S104a, the content is recorded on the optical disc 100. If it is determined that the recording has been completed (step S1 04a: Yes), the optical disc 100 is ejected from the pre-recording apparatus 200.
  • recording information such as content may be recorded, for example.
  • the file system may be recorded.
  • the lead-in area, lead-out area, etc. may be recorded subsequently by finalization processing.
  • FIG. 15 is a table conceptually showing a type of pre-recording procedure according to the embodiment of the information recording apparatus of the present invention. For convenience of explanation, four types of combinations of two types of information recording media and two types of recording procedures will be described in order.
  • the two types of information recording media explain.
  • the first type of information recording medium is at the boundary between the first method area A1 recorded by the CAV control method and the second method area A2 recorded by the CLV control method.
  • This is an information recording medium of a type that makes the boundary address of the first system area A1 different from the boundary address of the second system area A2 (hereinafter referred to as “type A information recording medium” as appropriate).
  • the second type of information recording medium includes the first method area A1 recorded by the CAV control method and the second method area A2 recorded by the CLV control method, as shown in FIG.
  • the type of information recording medium (hereinafter referred to as ⁇ Type B information recording medium '' as appropriate) is used so that the boundary address of the first method area A1 is substantially the same as the boundary address of the second method area A2. is there.
  • the first type of recording procedure is a recording procedure in which pre-recording in the first method area is performed (hereinafter referred to as “case 1 recording procedure” as appropriate).
  • the second type of recording procedure is a recording procedure in which pre-recording is performed in the second method area in addition to the first method area (hereinafter, referred to as “case 2 recording procedure” as appropriate).
  • the information recording medium is “type A” and the recording procedure is “case 1”, and (ii) the information recording medium is “type A”, and the recording procedure is “case 2”.
  • the type of information recording medium is “Type B” and the recording procedure is “Case 1”, and
  • the information recording medium is “Type B” and the recording procedure is “Case 2”. It is a certain type. The following describes the four types in order.
  • the type of information recording medium power ⁇ type A ”and the recording procedure“ Case 1 ” is commercially available with predetermined data pre-recorded in the recording area of the wobbleless section and released to the end user. It is a type. This can be used for electronic distribution. Specifically, by using a special pre-recorder, a predetermined length “a” is placed in the first method area A1 (radius position between “a point” and “b point”) in FIG. 10 described above. The specified data is recorded on the basis of the CAV control method. The endorser does a predetermined data only in this part, that is, in the recording area of the section without wobble.
  • Recorded information such as content that has been electronically distributed and downloaded to an information recording medium (so-called “Blank Disc”) in which the data has been recorded and the recorded information such as content has not been recorded. Record. More specifically, on this blank disc, at least a part of the user data area is a straight group, and dummy data or predetermined data such as a predetermined application, predetermined content, and encryption key is pre-recorded ( Prewritten).
  • the control data zone CDZ may also be pre-recorded.
  • the first feature is that, as shown in FIG. 10 described above, the end of the second method area (the section in which the recording process is performed by the CLV control method) and the first method area (the recording process is performed by the CAV).
  • the linear velocity at the time of moving to the next section is recorded so as to be approximately the same.
  • recording is also started for a predetermined address force indicating, for example, at least 16 ECC blocks ahead of the start end of the first method area, and the CAV mode is entered after the address indicating the start end of the first method area. Switch.
  • the same recording process is performed.
  • the second feature is that the end of the first method area is within a wobbled section that is separated from the boundary point between the wobbleless section and the wobbled section by a predetermined length, for example, about 16 ECC blocks. It is a point.
  • the address indicating the end of the first method area is based on a predetermined calculation (simulation, theoretical formula, empirical formula, empirical formula), and constitutes a reference clock signal generator for generating a recording clock.
  • Position accuracy errors occur due to errors in the time accuracy of the recording clock caused by the crystal and variations in the track pitch on the signal surface of the information recording medium. Therefore, the recording clock at the end of the first method area and the period of wobbles pre-formatted in the wobbled section are almost unsynchronized. Therefore, the recording process based on CAV is stopped at a position that is at least synchronized (so-called locked) with the recording clock at the end of the first method area and the period of the wobble preformatted in the section with wobble. It may be.
  • the third feature is that the linear velocity at the end of the first method area is different from the linear velocity at the start of the second method area continuously shifted from the end (so-called (Regarding linear velocity for appending).
  • the fourth feature is that the sector address at the end of the first method area is not contiguous with the pre-address at the start of the second method area that is continuously shifted. It may be. In other words, the sector address may have a discontinuity at the boundary point between the wobbleless section and the wobbled section.
  • the type of information recording medium power ⁇ type A ”and the recording procedure“ case 2 ” is pre-recorded when the first method area and the second method area reach the end user's hand. If. This is equivalent to small-volume publication.
  • the method of recording in the first method area and the second method area is almost the same as “Case 1” described above.
  • the recording information in the first recording area (no wobble section) in the user data area may be recorded simultaneously with or before or after recording in the file system. Further, the recording information in the first recording area (no wobble section) in the user data area may be a part of the recording information such as DVD-Video content.
  • the type of information recording medium power ⁇ type B ”and the recording procedure“ case 1 ” is wobbled.
  • the wobble in the section with wobble (so that the pre-address at the start end of the second scheme area in the section with the sector address at the end end of the first scheme area that continuously transitions to this start end) Wobble) or land pre-pit (LPP) pre-address is pre-formatted.
  • LPP land pre-pit
  • the sector address at the end of the first scheme area is set to match the pre-address at the start of the second scheme area. Therefore, when recording information in the first method area, it is ideally seamlessly linked (connected). In practice, for example, there is an error in the time accuracy of the recording clock due to the crystal forming the reference clock signal generator for generating the recording clock. For this reason, the sector address at the end of the first method area may deviate somewhat from the pre-address at the start of the second method area. Relatively small. As a result of the above, it is possible to reduce the data amount of the CAVZCLV buffer area to be recorded as compared with the case of “type A”.
  • the type of information recording medium power ⁇ type B ”and the recording procedure“ case 2 ” is pre-recorded when the first method area and the second method area reach the end user's hand. If. This is equivalent to small-volume publication.
  • the method of recording in the first method area and the second method area is almost the same as (2-3-3) “Type B” and “Case 1” described above.
  • FIG. 16 shows a recording operation performed on the information recording medium of the present invention.
  • 1 is a block diagram showing an overall configuration of a distribution system including an information recording apparatus and an information distribution apparatus that performs a distribution operation. Note that the step numbers in FIG. 16 correspond to the step numbers in FIG. In the distribution system according to the present embodiment, a DAO (Disk At Once) method may be adopted.
  • DAO disk At Once
  • the distribution system includes (i) an information recording device 200 that performs a recording operation on the optical disc 100, and (ii) an encrypted content in the information recording device 200.
  • an information distribution device 300 such as a web server
  • an external network 400 such as the Internet that enables the information recording device 200 and the information distribution device 300 to exchange information. It is configured with.
  • the optical disc 100 includes the NBCA, the control data zone CDZ, and the data area 102 for recording the encrypted content. More specifically, the media ID is recorded in NBCA by laser cutting. In the control data zone CDZ, encryption information Key 1 such as a disc key is recorded! In the data area 102, the encrypted content distributed by the information distribution apparatus 300 described later is recorded as it is.
  • the information recording device 200 transmits the media ID of the optical disc 100 to the information distribution device 300.
  • the encrypted content received from the information distribution apparatus 300 is recorded on the optical disc 100.
  • the information distribution apparatus 300 receives the media ID transmitted by the information recording apparatus 200. It generates encryption key information Keyl such as a disc key corresponding to the received media ID and encryption key information Key2 such as a title key. Based on the generated encryption key information Key 1 and Key 2, encryption processing such as encryption key is performed on the content.
  • the encrypted content that is, the encrypted content is distributed to the information recording apparatus 200. Since the encrypted content is distributed via the external network 400, encryption corresponding to eavesdropping and tampering such as SSL (Secure Socket Layer) is performed separately from encryption in the encryption network. Also good.
  • SSL Secure Socket Layer
  • the external network 400 includes an information recording device 200 and an information distribution device 300, both of which are connected to a line connection device (not shown) (for example, a hub device, a digital termination connection device (DS u) or a router equipped with a firewall application for intrusion prevention, etc.) so that information can be exchanged.
  • a line connection device for example, a hub device, a digital termination connection device (DS u) or a router equipped with a firewall application for intrusion prevention, etc.
  • FIG. 17 is a flowchart showing various processes in the information recording apparatus and information distribution apparatus of the present invention. Note that the step numbers in FIG. 17 correspond to the step numbers in FIG.
  • step S 101 when the optical disc 100 is loaded, first, a seek operation is performed by the optical pickup 202 under the control of a CPU (Central Processing Unit) 250 of the information recording apparatus described later (step S 101). ).
  • a CPU Central Processing Unit
  • step S102 it is determined whether or not the optical disc 100 is an optical disc for distributing content.
  • the optical disk 100 is an optical disk for delivering content (step S102: Yes)
  • various information necessary for the recording operation on the optical disk 100 is acquired (step S103). More specifically, the OPC process is performed to determine the optimum recording power and the recording strategy pattern.
  • step S104 it is determined whether or not content has been recorded on the optical disc 100 (step S104).
  • step S104 when content has not been recorded on the optical disc 100 (step S104: No), the optical disc 100 is controlled from the optical disc 100 under the control of the CPU 250, for example, from the NBCA (Narrow Burst Cutting Area). A unique media ID is obtained (step S105).
  • NBCA Narrow Burst Cutting Area
  • the acquired media ID is encrypted based on SSL or the like, and is transmitted to, for example, the information distribution apparatus 300 such as a server on the network (step S106).
  • step S102 determines whether the content is not an optical disc for distribution (step S102: No) or not an optical disc for distribution (step S102: No), and the result of determination in step S104 is optical If it is determined that the content has been recorded on the disc 100 (step S104: Yes), the optical disc 100 is ejected from the information recording apparatus 200.
  • Information distribution apparatus 300 first receives a media ID encrypted by SSL or the like (step S 201).
  • the information distribution apparatus 300 decrypts the received media ID encrypted by SSL or the like (step S202).
  • the information distribution apparatus 300 generates encrypted information Keyl such as a disc key corresponding to the decrypted media ID and encrypted key information Key2 such as a title key (step).
  • step S204 the content and file system distributed by the generated encryption information Key1 and Key2 are encrypted by a predetermined encryption system.
  • the encrypted content and file system encrypted based on the encryption system using the generated encryption key information Key 1 and Key 2 are further converted to SSL or the like. And is distributed to the information recording apparatus 200 (step S 205). More specifically, the encrypted content encrypted by SSL or the like and the attribute of the file system, so-called CCI (Copy Control Information), cannot be reproduced during distribution. To do this, it is set to the Never Copy attribute.
  • CCI Copy Control Information
  • the information recording apparatus 200 receives the encrypted content and file system encrypted by SSL or the like distributed by the information distributing apparatus (step S107).
  • the information recording apparatus 200 decrypts the received encrypted content and file system using SSL or the like (step S 108).
  • the encrypted content and the file system encrypted by the encrypted key information Keyl and Key2 are not decrypted, and are directly stored in the optical disc 100.
  • Record (step S109) More specifically, the encrypted content and the file system recording encrypted based on a predetermined encryption system are pre-recorded and started from the address of the last recording area of the lead-in area 101, The process ends at the address of the recording area of the pre-recorded lead-out area 103. If the encrypted content and the recording capacity of the file system are not performed up to the address of the prerecorded recording area of the lead-out area 103, the buffer data may be recorded up to this address. . In the lead-in area 101, the lead-out area 103, etc., the buffer data may be written in advance and sold, or the information recording device 200 may add new data when recording encrypted content. May be written.
  • the encryption key information Key 1 and Key Send / receive media ID instead of 2. Therefore, for example, it is possible to keep the confidentiality of the encryption key information Keyl pre-recorded in a recording area such as a control data zone high, that is, to make it secure. Therefore, it becomes almost or completely impossible to create or manufacture a recordable information recording medium on which an illegal copy of the encryption key information Key 1 has been made.
  • FIG. 18 is a graph (FIG. 18 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium
  • FIG. 18 is a schematic diagram (FIG. 18B) schematically showing the relationship between the first method area and the second method area of the present invention and the address.
  • the same reference numerals are assigned to substantially the same configurations as the above-mentioned “(1-4-2) Specific examples of the first rotation speed control method and the second rotation speed control method”, and the same reference numerals are given. Description is omitted as appropriate.
  • the boundary address at the outer edge of the first method area is "N".
  • the boundary address at the inner periphery of the second method area takes the value “N + 3” and is not continuous.
  • the electronic distribution destination is copied. It is possible to more easily and accurately identify whether the target information recording medium is a legitimate recording type information recording medium or an illegally copied information recording medium. is there.
  • FIG. 19 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
  • the same reference numerals are assigned to substantially the same configurations as the above-described “(1 4 2) Specific examples of the first rotation speed control method and the second rotation speed control method”, and the description thereof will be appropriately described. Omitted.
  • the boundary point between the first method area and the second method area (i) the physical in the case where the first method area does not exist
  • the phase of the first wobble corresponding to the recording unit and the second wobble that can specify the address of the second method area may be continuous, or (ii) the frequency of the first wobble and the second Make the wobble frequency approximately equal.
  • FIG. 20 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
  • the same reference numerals are assigned to substantially the same configurations as the above-described “(1 4 2) Specific examples of the first rotation speed control method and the second rotation speed control method”, and the description thereof will be appropriately described. Omitted.
  • FIG. 21 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
  • the same reference numerals are assigned to substantially the same configurations as the above-described “(1 4 2) Specific examples of the first rotation speed control method and the second rotation speed control method”, and the description thereof will be appropriately described. Omitted.
  • the boundary between the first method area and the second method area corresponds to the first wobble corresponding to the physical recording unit when it is assumed that the first method area does not exist.
  • the predetermined data amount (for example, one ECC block or one sector) may be separated, and the predetermined data amount corresponding to the second wobble capable of defining the address of the second method area may be used.
  • the power described for a write-once or rewritable optical disc as an example of an information recording medium, and a recorder or player related to an optical disc as an example of an information recording device are also applicable.
  • the information recording medium, information recording apparatus and method, and computer program according to the present invention irradiate laser light such as DVD (Digital Versatile Disc), BD (Blu-ray Disc), and CD (Compact Disc). Therefore, the present invention can be used for an information recording medium such as an optical disc that can be recorded and reproduced, and can be used for an information recording device of the information recording medium. Further, the present invention can also be used for an information recording device or the like that is mounted on or connectable to various computer equipment for consumer use or business use.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

La présente invention concerne un support d'enregistrement d'informations comprenant une première zone d'enregistrement (zone sans oscillation) dans laquelle des informations de commande détectables, c'est-à-dire au moins des informations d'horloge (oscillation) ou des informations d'adresse (LPP), ne sont pas préformatées, et une ou plusieurs secondes zones d'enregistrement (zone avec oscillations) dans lesquelles des informations de commande sont préformatées, pour enregistrer ou reproduire des informations d'enregistrement. Dans la première zone d'enregistrement, des informations d'enregistrement peuvent être enregistrées par un premier système de commande de vitesse de rotation (par exemple, CAV). La seconde zone d'enregistrement est préformatée par un second système de commande de vitesse de rotation (CLV). La relation entre une position de rayon et une adresse dans la seconde zone d'enregistrement est essentiellement identique à la relation recommandée entre la position de rayon et l'adresse dans le cas où la première zone d'enregistrement n'existe pas et les informations de commande sont préformatées par le second système de commande de rotation (CLV).
PCT/JP2006/321499 2005-10-27 2006-10-27 Support d'enregistrement d'informations, dispositif et procede d'enregistrement d'informations et programme informatique WO2007049745A1 (fr)

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WO2009069441A1 (fr) * 2007-11-26 2009-06-04 Taiyo Yuden Co., Ltd. Support d'enregistrement d'informations optique, procédé d'enregistrement d'informations pour support d'enregistrement d'informations optique et dispositif d'enregistrement d'informations optique
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