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WO2008032377A1 - Support d'enregistrement comprenant une zone de reproduction exclusive et une zone réinscriptible, dispositif d'enregistrement d'information, et support d'enregistrement d'information - Google Patents

Support d'enregistrement comprenant une zone de reproduction exclusive et une zone réinscriptible, dispositif d'enregistrement d'information, et support d'enregistrement d'information Download PDF

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Publication number
WO2008032377A1
WO2008032377A1 PCT/JP2006/318170 JP2006318170W WO2008032377A1 WO 2008032377 A1 WO2008032377 A1 WO 2008032377A1 JP 2006318170 W JP2006318170 W JP 2006318170W WO 2008032377 A1 WO2008032377 A1 WO 2008032377A1
Authority
WO
WIPO (PCT)
Prior art keywords
recording
area
data
information
recorded
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2006/318170
Other languages
English (en)
Japanese (ja)
Inventor
Masayoshi Yoshida
Keiji Katata
Takeshi Koda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Corp
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 Corp filed Critical Pioneer Corp
Priority to PCT/JP2006/318170 priority Critical patent/WO2008032377A1/fr
Publication of WO2008032377A1 publication Critical patent/WO2008032377A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1883—Methods for assignment of alternate areas for defective areas
    • 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1883—Methods for assignment of alternate areas for defective areas
    • G11B2020/1893—Methods for assignment of alternate areas for defective areas using linear replacement to relocate data from a defective block to a non-contiguous spare area, e.g. with a secondary defect list [SDL]
    • 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

Definitions

  • Recording medium having read-only area and rewritable area, information recording apparatus, and information recording method
  • the present invention relates to a recording medium for recording information such as video data, image data, audio data, character data, or an application program, and an information recording apparatus for recording information on such a recording medium And an information recording method.
  • optical discs as a recording medium for recording information such as video data, image data, audio data, character data, or an application program.
  • Optical discs include read-only optical discs and recordable optical discs.
  • a read-only optical disc is a type of optical disc in which data cannot be recorded by the user.
  • a recordable optical disc is a type of optical disc that allows the user to read data and allows the user to record data.
  • the recordable optical disc includes a write-once optical disc and a rewritable optical disc.
  • a write-once optical disc is a type of optical disc in which data can be additionally written by a user, but once recorded data cannot be rewritten.
  • a rewritable optical disc is a type of optical disc in which data can be additionally written by the user and the recorded data can be rewritten by the user.
  • the read-only optical disc has an advantage that an optical disc on which data is recorded in advance by injection molding can be mass-produced at a low cost.
  • the read-only optical disc has a disadvantage that the user cannot record data.
  • a recordable optical disc has an advantage that data can be recorded by a user.
  • recordable optical discs have the disadvantage that it is difficult to mass-produce optical discs on which data has been recorded in advance at low cost.
  • an optical disc having a read-only area and a recordable area a so-called hybrid disc is being developed.
  • the read-only area reads data by the user. Force that can be output This is an area where data cannot be recorded by the user.
  • the recordable area is an area where data can be read out by the user and data can be recorded by the user. According to this hybrid disc, it is possible to simultaneously take advantage of both the advantages of the above-mentioned reproduction-only optical disc and the recordable optical disc.
  • Hybrid discs currently under development generally have a read-only area in a part of the power user data area that is a recordable disc.
  • this playback-only area software products such as content data or application programs that can be played back independently by an information recording / playback device are recorded in advance as embossed pits.
  • the portion of the user data area other than the read-only area is a recordable area, and no data is recorded when the hybrid disc is shipped from the factory. For example, a user who has purchased the hybrid disc records data in the recordable area.
  • content data or application programs recorded in a user data area so as to be independently reproducible are generally composed of a file system and entity data.
  • entity data is video data, image data, audio data, character data, or an execution program and accompanying data.
  • the file system is information for managing data recorded in the user data area (in this example, entity data).
  • a software product pre-recorded in a playback-only area of a hybrid disc currently under development can be played back by itself.
  • this software product generally consists of a file system and entity data.
  • the file system and the actual data are pre-recorded as embossed pit rows in the read-only area. This means that the file system is recorded in the user data area of the hybrid disc in advance in a non-rewritable state.
  • Such a hybrid disk has the following problems.
  • a so-called single session file system such as a rewritable file system
  • the system needs to be rewritten.
  • the present invention has been made in view of the above-described problems, and an object of the present invention is to form a read-only area and a recordable area in the user data area, which are independent on their own.
  • An object is to provide a recording medium in which a reproducible software product or the like is recorded in advance in a reproduction-only area, and an information recording apparatus, an information recording method, and a computer program for recording information on such a recording medium.
  • a recording medium of the present invention is formed on a substrate, a recording layer provided on the substrate, a protective layer provided on the recording layer, and the recording layer.
  • an information recording apparatus of the present invention is formed in a user data area in a recording area, is dedicated for reproduction, and has a reproduction-only area in which data is recorded in advance as an embossed pit string.
  • the rewritable area formed in the user data area in the recording area and rewritable, and the rewritable area formed in the recording area and rewritable, and the data recorded in the read-only area must be changed.
  • An information recording apparatus for performing information recording, the recording means for recording data in a user data area, and the recording of data to be recorded by the recording means
  • a determination means for determining whether or not the requested position is within the reproduction-dedicated area; and if the recording request position is not within the reproduction-dedicated area, the data to be recorded by the recording means is recorded at the recording requested position
  • Controlling the recording means to control the recording means to record data to be recorded by the recording means in the changed data recording area when the recording request position is within the reproduction-only area.
  • recording position correspondence information indicating the correspondence between the recording position of the data recorded in the changed data recording area and the recording request position of the data under the control of the control means.
  • Recording position correspondence information generating means for recording in the management information recording area.
  • a computer program of the present invention causes a computer to execute the information recording method of the present invention.
  • FIG. 1 is an explanatory diagram showing an embodiment of a recording medium of the present invention.
  • FIG. 2 One embossed pit row formed in the read-only area of the recording medium in FIG. It is a perspective view which shows a part.
  • FIG. 3 is an explanatory diagram showing the structure of a recording area in the recording medium in FIG.
  • FIG. 5 is an explanatory diagram showing a differential list after rewriting data or a file system. ⁇ 6] It is an explanatory view showing a diffate list at the time of factory shipment.
  • FIG. 8 is an explanatory diagram showing a state of a recording area after data recording is performed on the recording medium in FIG.
  • FIG. 9 is an explanatory diagram showing another embodiment of the recording medium of the present invention.
  • FIG. 10 is a block diagram showing an embodiment of an information recording apparatus of the present invention.
  • FIG. 11 is a flowchart showing an operation of the information recording apparatus in FIG.
  • FIG. 12 is a flowchart following FIG. 11.
  • FIG. 13 is a flowchart showing details of the data recording process in FIG.
  • FIG. 14 is a flowchart showing details of the file system rewriting process in FIG. 12.
  • FIG. 15 is a flowchart showing details of the data reading process in FIG. 12.
  • FIG. 16 is an explanatory diagram showing an embodiment when a multi-session file system is employed in the recording medium of the present invention.
  • FIG. 1 shows an embodiment of a recording medium of the present invention.
  • a recording medium 1 in FIG. 1 is a recording medium for recording information such as video data, image data, audio data, character data, or an application program.
  • the recording medium 1 is an optical disc, for example, and is a Blu-ray disc, for example.
  • the recording medium 1 is a hybrid disk.
  • the recording medium 1 is a rewritable optical disk as a whole and has a read-only area formed in a part of the user data area.
  • the outer shape of the recording medium 1 is disk-shaped.
  • the recording medium 1 includes a substrate 2, a recording layer 3 provided on the substrate 2, and a light transmission protective layer 4 provided on the recording layer 3.
  • the basic structure of the substrate 2, the recording layer 3, and the light transmission protective layer 4 such as the shape, thickness, and material is the same as that of a rewritable Blu-ray disc (BD-RE), for example.
  • BD-RE rewritable Blu-ray disc
  • a recording area 5 is formed in the recording layer 3, and a read-only area 21 is formed in a part of the recording area.
  • an emboss pit row which is an array of a plurality of emboss pits 7, is formed in the read-only area 21.
  • Figure 3 shows the structure of recording area 5. As shown in FIG. 3, in the recording area 5, a lead-in zone 11, an information zone 12 and a lead-out zone 13 are formed on the outer peripheral side of the inner peripheral side force of the recording medium 1.
  • a differential management area 14 and a PAC (Physical Access Control) recording area 15 are formed in the lead-in zone 11.
  • Diffetato management area 14 is an area for recording DiffEctrito 31.
  • the PAC recording area 15 is an area for recording PAC32.
  • the positions of the differential management area 14 and the PAC recording area 15 in the lead-in zone 11 are set based on, for example, a standard concerning a Blu-ray disc.
  • a user data area 16 and two spare areas 17, 18 are formed. Spare areas 17 and 18 are used to preliminarily record data in the recording area 5 where the information recording / reproducing apparatus 100 requests recording, that is, data that cannot be appropriately recorded at the recording request position due to the presence of the data. This area. That is, the spare areas 17 and 18 are areas for saving data in order to perform differential management. Spare areas 17 and 18 are also areas for recording the changed file system or the actual data after the change. Spare area 17 is arranged between lead-in zone 11 and user data area 16. Spare area 18 is arranged between lead-out zone 13 and user data area 16. [0029] In the user data area 16, a reproduction-only area 21 and a data recording area 22 are formed. In the reproduction-only area 21, the software product 33 is recorded in advance as an embossed pit train as shown in FIG. The data recording area 22 is an area for recording user data.
  • the read-only area 21 is arranged in the innermost peripheral portion of the user data area 16.
  • the position of the playback-only area 21 can be anywhere in the user data area 16.
  • the file system 34 is recorded in the reproduction-only area 21. From the viewpoint of speeding up data reproduction processing or data recording processing on the recording medium 1 by the information recording / reproducing apparatus 100, the file system 34 is preferably arranged in the innermost peripheral portion of the user data area 16. . Therefore, it is desirable to arrange the read-only area 21 in the innermost part of the user data area 16.
  • the differential management area 14 and the PAC recording area 15 In addition to the differential management area 14 and the PAC recording area 15, several areas (not shown) for recording various management information or control information are formed in the lead-in zone 11. Has been. In the lead-out zone 13, an area for recording a copy of management information or control information is formed. These areas are formed, for example, according to the standard for Blu-ray Discs.
  • the differential management area 14, the PAC recording area 15, the spare areas 17, 18 and the data recording area 22 are all rewritable. That is, in these areas, data can be read by the information recording / reproducing apparatus 100 (see FIG. 10), data can be additionally written by the information recording / reproducing apparatus 100, and once recorded data can be written by the information recording / reproducing apparatus 100. Can be replaced.
  • the playback-only area 21 is for playback only. That is, in the reproduction-only area 21, data can be read by the information recording / reproducing apparatus 100, but data cannot be recorded by the information recording / reproducing apparatus 100.
  • FIG. 4 shows the structure of the software product 33 recorded in the read-only area 21.
  • the software product 33 includes a file system 34 and entity data 35.
  • the entity data 35 includes, for example, application programs, video data, image data, audio data, character data, and the like.
  • the application program is a program that can be executed by the information recording / reproducing apparatus 100.
  • the application program is a program for displaying a high function menu during data reproduction.
  • a user's original menu for viewing data recorded by the user in a data recording area 22 such as video captured by a digital video camera or photos captured by a digital still camera. Etc. can be created.
  • video data, image data, audio data, and character data included in the entity data 35 are used when the application program is executed.
  • the file system 34 includes information for managing data recorded in the user data area 16, such as volume information.
  • File system 34 is a single session file system, such as a rewritable file system.
  • the file system 34 manages the entire user data area 16. That is, the file system 34 manages the reproduction-only area 21 and the data recording area 22. Therefore, when data is added or rewritten to the data recording area 22, the file system 34 must be changed! /.
  • FIG. 5 shows a differential list 31 recorded in the differential management area 14.
  • the defect list 31 is a list of information indicating the correspondence between the data recording request position and the actual recording position in the spare area 17 or 18 of the data.
  • the recording medium 1 has a differential management function.
  • the differential management function refers to data stored in the spare area when data cannot be recorded properly due to a defect such as scratches formed on the recording surface of the recording medium 1 or dust adhering to the recording surface. This is a function for preliminarily recording in 17 and 18. This allows the data to be recorded to be The data can be saved from the fates and the data can be surely saved.
  • the information recording / reproducing apparatus 100 when data cannot be properly recorded at a position where the information recording / reproducing apparatus 100 requests recording, that is, a recording request position (that is, a position where recording should be originally performed) due to the presence of a shift.
  • the information recording / reproducing apparatus 100 records the data in the spare area 17 or 18.
  • the information recording / reproducing apparatus 100 records (registers) information indicating the correspondence between the recording request position of the data and the actual recording position of the data in the spare area 17 or 18 in the differential list 31. .
  • the information recording / reproducing apparatus 100 records the address indicating the recording request position of the data in the differential list 31 as the pre-evacuation address, and stores the data in the spare area 17 or 18 of the data.
  • the address indicating the actual recording position is recorded in the differential list 31 as an address after saving.
  • the differential list 31 includes a function indicating the correspondence between the recording position of the changed file system and the initial recording position of the file system 34 (at the time of shipment from the factory), and the actual data after the change. It also has a function to show the correspondence between the recording position and the initial (factory default) actual data 35 recording position. These functions will be described later.
  • FIG. 7 shows the PAC32 recorded in the PAC recording area 15.
  • PAC32 consists of a PAC header and PAC data.
  • the PAC header contains PAC—ID32A and UnknownPAC rule 32B!
  • the PAC data includes PAC detailed information 32C.
  • PAC—ID 32A is information for identifying the PAC, and this coincides with information indicating the type of the recording medium 1 described later.
  • the PAC detailed information 32C is information for informing the information recording / reproducing apparatus (for example, the information recording / reproducing apparatus 100) adopting the data recording method for the recording medium 1 about the structure of the recording area 5 of the recording medium 1. It is.
  • the PAC detailed information 32C includes information indicating the structure of the recording area 5. Specifically, the PAC detailed information 32C includes the type of recording medium, the number of playback-only areas, the start address of each playback-only area, the end address of each playback-only area, and the outermost periphery of the ISA (Inner Spare Area). Address, innermost of OSA (Outer Spare Area) It contains information indicating the peripheral address and the minimum required user data area size.
  • the type of the recording medium 1 is “ROM / RE”, which means that the type of the recording medium 1 is a hybrid disk.
  • the number of playback-only areas 21 is one. Therefore, only the start address of playback-only area # 1 and the end address of playback-only area # 1 are described in PAC detailed information 32C.
  • the start address of playback-only area # 1 is A, and the end address of playback-only area # 1 is B.
  • the ISA hits the spare area 17, and its outermost peripheral address is A-1.
  • OSA hits spare area 18 and its innermost address is C.
  • the minimum required size of the user data area 16 is D.
  • the minimum size D of the user data area 16 is the size of the minimum user data area 16 required to execute the application program recorded in the reproduction-only area 21.
  • the information recording / reproducing apparatus 100 receives information indicating the outermost peripheral address A-1 of ISA and the innermost peripheral address C of OSA or the size D of the user data area from the PAC32 recorded in the PAC recording area 15. Read out and secure user data area 16 in recording area 5 based on this information. As a result, in the recording area 5, the user data area 16 that is the minimum necessary for executing the application program recorded in the reproduction-only area 21 is always secured.
  • the outermost peripheral address of ISA may be used as the start address of user data area 16
  • the innermost peripheral address of OSA may be used as the end address of user data area 16.
  • the UnknownPAC rule 32B is used for information recording / reproducing devices that do not employ the data recording method for recording medium 1 or the data reproducing method for recording medium 1 to record data for each area of recording area 5. It is information for telling record restrictions and read restrictions.
  • the UnknownPAC rule 32B in the present embodiment describes information for prohibiting data recording for all areas in the recording area 5 except the drive area. Yes.
  • information indicating that data reading is permitted for all areas in the recording area 5 is described.
  • the information recording / reproducing apparatus refers to, for example, PAC-ID32A As a result, it is recognized that this recording medium 1 adopts a data recording method that is not adopted by the user. Subsequently, the information recording / reproducing apparatus reads the UnknownPAC rule 32B from the PAC32 recorded in the PAC recording area 15. Then, the information recording / reproducing apparatus recognizes that data recording is prohibited for all areas in the recording area 5 except the drive area based on the UnknownPAC rule 32B.
  • FIG. 8 shows a state when the recording medium 1 is used.
  • a state when the recording medium 1 is used will be described with reference to FIGS. 3 and 8.
  • FIG. 8 shows a state when the recording medium 1 is used.
  • the software product 33 is recorded in the reproduction-only area 21.
  • the file system 34 information for managing the user data area 16 in which no data other than the file system 34 and the entity data 35 is recorded is described.
  • the recording medium 1 in such a factory-shipped state is purchased and the recording medium 1 is attached to the information recording / reproducing apparatus 100.
  • the information recording / reproducing apparatus 100 recognizes that the loaded recording medium is an hybrid disk (recording medium 1).
  • the information recording / reproducing apparatus 100 reads the start address and the end address of the reproduction-only area 21 as well as the PAC32 medium power recorded in the PAC recording area 15.
  • the information recording / reproducing apparatus 100 reads the defect list 31 from the differential management area 14 and recognizes that the defect list 31 is empty.
  • the information recording / reproducing apparatus 100 reads the file system 34 from the reproduction-only area 21.
  • the information recording / reproducing apparatus 100 executes an application program included in the entity data 35.
  • the information recording / reproducing apparatus 100 changes the file system 34. That is, the information recording / reproducing apparatus 100 generates a new file system 38 for managing the user data area 16 in which the user data 36 is recorded. Subsequently, the information recording / reproducing apparatus 100 starts the recording process of the file system 38 after the change.
  • the recording request position of the file system 38 after the change is the recording position of the file system 34 at the initial stage (at the time of factory shipment). However, this position is for playback only. For this reason, the changed file system 38 cannot be recorded at the recording request position.
  • the information recording / reproducing apparatus 100 compares the start address and end address of the read-only area 21 that also read the PAC32 medium power with the address of the recording request position of the file system 38 after the change. It is recognized that the recording request position of the file system 38 is within the read-only area 21. Subsequently, the information recording / reproducing apparatus 100 records the changed file system 38 in the spare area 17. As a result, the changed file system 38 is recorded in the spare area 17 as shown in FIG.
  • the information recording / reproducing apparatus 100 updates the defect list 31. That is, the information recording / reproducing apparatus 100 records the recording request position of the file system 38 after the change (that is, the initial The address indicating the recording position of the file system 34) is described in the defect list 31 as the address before saving. Further, the information recording / reproducing apparatus 100 uses the address indicating the actual recording position of the file system 38 after the change (that is, the recording position of the file system 38 after the change in the spare area 17) as the post-save address. This is described in phaetate list 31. As a result, the difference list 31 describes the correspondence between the initial recording position of the file system 34 and the actual recording position of the changed file system 38 in the spare area 17.
  • the information recording / reproducing apparatus 100 records the user data 37 at the recording request position as long as there is no difference at the recording request position of the user data 37.
  • user data 37 is recorded in the data recording area 22 as shown in FIG.
  • the information recording / reproducing apparatus 100 changes the file system 38. That is, the information recording / reproducing apparatus 100 generates a new U and file system for managing the user data area 16 to which the user data 37 is added.
  • the recording request position of the file system after the change is the initial recording position of the file system 34.
  • the differential list 31 describes the correspondence between the recording position of the initial file system 34 and the recording position of the changed file system 38 in the spare area 17.
  • the information recording / reproducing apparatus 100 refers to the differential list 31 and overwrites the changed file system on the file system 38 recorded in the spare area 17.
  • the changed file system 38 (or the file system overwritten on the file system 38) is read as follows.
  • the read request position of the file system 38 is the recording position of the initial file system 34.
  • the information recording / reproducing apparatus 100 refers to the defect list 31 when reading the file system 38.
  • the defect list 31 describes the correspondence between the recording position of the initial file system 34 and the recording position of the changed file system 38 in the spare area 17.
  • the information recording / reproducing apparatus 100 can change the recording position of the changed file system 38 in the spare area 17 from the differential list 31.
  • the file position is read out from the file system 38.
  • the file system 34 recorded in the read-only area 21 in a non-rewritable state can be substantially rewritten. For this reason, even when a single session file system is adopted, it is possible to appropriately add or rewrite user data to the data recording area 22.
  • FIG. 9 shows an embodiment in which the present invention is applied to a two-layer recording medium.
  • the two-layer recording medium 40 has two recording layers, that is, a first layer 41 (layer 0) and a second layer 42 (layer 1).
  • a lead-in zone 52, an information zone 53, and a lead-out zone 54 are formed from the inner circumference side to the outer circumference side of the recording medium 40. .
  • a differential management area 55 and a PAC recording area 56 are formed in the lead-in zone 52.
  • a user data area 57 and two spare areas 58 and 59 are formed in the information zone 53.
  • a reproduction-only area 61 and a data recording area 62 are formed.
  • the playback-only area 61 is arranged in the innermost part of the user data area 57.
  • a lead-in zone 72, an information zone 73, and a lead-out zone 74 are formed from the inner circumference side to the outer circumference side of the recording medium 40.
  • a differential management area 75 and a PAC recording area 76 are formed.
  • a user data area 77 and two spare areas 78 and 79 are formed in the information zone 73.
  • a data recording area 81 is formed!
  • Diff m management area 55, 75, PAC recording area 56, 76, spare area 58, 59, 78, 79 and data recording area 62, 81 are all rewritable.
  • Playback-only area 61 is for playback only.
  • FIG. 10 shows an embodiment of the information recording apparatus of the present invention.
  • An information recording / reproducing apparatus 100 in FIG. 10 is an apparatus capable of performing data recording and data reproduction on the recording medium 1.
  • the information recording / reproducing apparatus 100 is an optical disc drive or an optical disc recorder.
  • the information recording / reproducing apparatus 100 employs a data recording method and a data reproducing method for the recording medium 1.
  • the information recording / reproducing apparatus 100 includes a spindle motor 101, an optical pickup 102, a disk drive circuit 103, an encoder 104, a recording signal generation circuit 105, a read signal generation circuit 107, a decoder 108, and a computer unit 109.
  • the spindle motor 101 rotates the recording medium 1 attached to the information recording / reproducing apparatus 100.
  • the optical pickup 102 irradiates the recording medium 1 with a light beam, thereby recording or reading data on the recording medium 1.
  • the disk drive circuit 103 performs servo control such as the rotation of the spindle motor 101 and the irradiation position of the optical beam of the optical pickup 102.
  • the encoder 104 encodes the user data input to the information recording / reproducing apparatus 100.
  • the recording signal generation circuit 105 converts the user data encoded by the encoder 104 into a recording signal.
  • the optical pickup 102 modulates the light beam based on this recording signal. By irradiating the recording surface of the recording medium 1 with the modulated light beam, the user data is recorded on the recording medium 1.
  • the optical pickup 102, the disk drive circuit 103 and the recording signal generation circuit 105 constitute a recording unit 106 for recording data in the recording area 5 of the recording medium 1.
  • Read signal generation circuit 107 generates a read signal and a servo control signal based on the detection signal output from optical pickup 102.
  • the detection signal is a signal modulated by the intensity change of the reflected light of the light beam, and the read signal generated based on this detection signal includes a signal component corresponding to the data recorded on the recording medium 1. ing.
  • Read signal generation circuit 107 generates a read signal based on this signal component. Further, the detection signal includes signal components necessary for servo control such as rotation of the spindle motor 101 and the light beam irradiation position of the optical pickup 102.
  • the read signal generation circuit 107 generates a servo control signal based on this signal component.
  • the read signal is supplied to the decoder 108, and the servo control signal is supplied to the disk drive circuit 103.
  • the decoder 108 decodes the read signal generated by the read signal generation circuit 107 and reproduces the data recorded on the recording medium 1.
  • the computer unit 109 includes a determination unit 111, a recording control unit 112, a differential list update unit 113, a storage unit 114, and a general control unit 115.
  • the computer unit 109 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and a flash memory.
  • the ROM stores a program in which commands for realizing the determination unit 111, the recording control unit 112, the differential list update unit 113, and the general control unit 115 are described.
  • the CPU reads this program from the ROM and executes it.
  • RAM is used as working memory when the CPU executes a program.
  • the flash memory constitutes the storage unit 114.
  • the determination unit 111 determines whether or not the recording request position of data to be recorded by the recording unit 106 is in the reproduction-only area 21.
  • the recording control unit 112 controls the recording unit 106 to record data to be recorded by the recording unit 106 at the recording request position, and the recording request position is reproduced.
  • the recording unit 106 is controlled so that the data to be recorded by the recording unit 106 is recorded in the spare area 17 or 18.
  • the differential list updating unit 113 is a defect list 31 that indicates the correspondence between the recording position of the data recorded in the spare area 17 or 18 and the recording request position of the data under the control of the recording control unit 112. This defect list 31 is recorded in the differential management area 14.
  • the general control unit 115 controls the encoder 104, the recording signal generation circuit 105, the read signal generation circuit 107, the decoder 108, the determination unit 111, the recording control unit 112, the defect list update unit 113, the storage unit 114, and the like. To do.
  • FIG. 11 shows the operation of the information recording / reproducing apparatus 100.
  • step S1 the general control unit 115 of the information recording / reproducing apparatus 100 performs initial setting.
  • the overall control unit 115 determines whether the loaded recording medium is a hybrid disk, that is, the recording medium 1 (step S 2). This determination can be made by reading the PAC-ID 32A in the PAC 32 recorded in the PAC recording area 15 of the recording medium 1 and recognizing the contents of the PAC-ID 32A.
  • step S2 When the mounted recording medium is recording medium 1 (step S2: YES), general control unit 115 reads the start address and end address of read-only area 21 from PAC32 (step S3). Then, the general control unit 115 stores the start address and end address of the reproduction-only area 21 in the storage unit 114.
  • the general control unit 115 reads the differential list 31 recorded in the differential management area 14 (step S4). Then, the general control unit 115 stores this differential list 31 in the storage unit 114.
  • the overall control unit 115 determines whether or not the differential list 31 is empty (step S 5).
  • step S6 When the differential area 31 is empty (step S5: YES), the general control unit 115 reads the file system 34 recorded in the reproduction-only area 21 (step S6).
  • the address indicating the recording position of the file system 34 is registered in the differential list 31. If it is determined (step S5: NO), the general control unit 115 reads the changed file system 38 from the spare area 17 or 18 (step S7). In other words, in this case, an address indicating the recording position of the file system 34 is recorded in the differential list 31 as an address before saving, and an address indicating the recording position of the file system 38 after change is stored as a corresponding address after saving. It is recorded.
  • the general control unit 115 finds the address indicating the recording position of the file system 34 from the addresses before saving in the defect list 31 and corresponds to the address after saving, that is, the file system 38 after the change. Recognizes the address indicating the recording position. Then, the general control unit 115 reads the file system 38 after the change of this address power.
  • the general control unit 115 reads the application program in the entity data 35 recorded in the reproduction-only area 21 (step S8).
  • step S 10 the general control unit 115 executes this application program.
  • the overall control unit 115 determines whether or not a data recording request is generated due to execution of an application program or the like (step S11).
  • step S11 When a data recording request is generated (step S11: YES), the general control unit 115 starts a data recording process (step S12).
  • the overall control unit 115 first determines whether or not an address indicating a recording request position of data to be recorded is registered in the defect list 31 ( Step S21).
  • step S21: NO the determination unit 111 determines the recording request position of the data to be recorded. It is determined whether or not the force is within the reproduction-only area 21 (step S22). This determination is made by comparing the start address and end address of the read-only area 21 stored in the storage unit 114 in step S3 with the address indicating the recording request position of the data to be recorded.
  • step S22 When the recording request position of the data to be recorded is in the reproduction-only area 21 (step S22: YES), the recording control unit 112 records the data in the spare area 17 or 18 (schedule). Step S23).
  • the differential list update unit 113 updates the differential list 31 (step S 24). That is, the differential list updating unit 113 describes the address indicating the recording request position of the data in the defect list 31 as an address before saving, and saves the actual recording position of the data in the spare area 17 or 18 after saving. Record in the address area 31 as an address.
  • step S22 NO
  • the recording control unit 112 determines that there is no data at the recording request position of the data to be recorded. Then, the data is recorded at the recording request position of the data (step S25).
  • step S21 when the address indicating the recording request position of the data to be recorded is registered in the differential area 31 in step S21 (step S21: YES), the recording control unit 112 stores the data as a spare. Record in area 17 or 18 (step S26). That is, in this case, in the differential list 31, an address indicating the recording request position of the data is recorded as an address before saving, and a corresponding recording position in the spare area 17 or 18 is indicated as an address after saving corresponding thereto. The address is recorded.
  • the recording control unit 112 refers to the differential list 31, recognizes the recording position in the spare area 17 or 18 corresponding to the address indicating the recording request position of the data, and overwrites the data at this recording position. To do.
  • step S13 in FIG. 12 YES, step S14.
  • the overall control unit 115 first changes the file system. That is, the overall control unit 115 generates a new file system for managing the user data area 16 to which new data is added (step S31).
  • the general control unit 115 executes the data recording process shown in FIG. 13 in order to record this new file system (step S32).
  • the address indicating the recording request position of the file system is not registered in the differential area 31 (step S21). : NO).
  • the recording request position of the file system is the initial recording position of the file system 34, and this recording position is in the reproduction-only area 21 (step S22: YES). Therefore, the recording control unit 112 records the file system in the spare area 17 or 18 (step S23).
  • the defect list generator 113 updates the defect list 31 (step S24). That is, the differential list generation unit 113 describes the address indicating the recording request position of the file system in the differential list 31 as a save address, and indicates the actual recording position of the file system in the spare area 17 or 18. Is described as an address after saving.
  • the recording control unit 112 records the file system in the spare area 17 or 18 (step S26). That is, in this case, in the differential list 31, an address indicating the recording request position of the file system is recorded as an address before saving, and a corresponding recording position in the spare area 17 or 18 is assigned as a corresponding address after saving. The address shown is recorded.
  • the recording control unit 112 refers to the defect list 31, recognizes the recording position in the spare area 17 or 18 corresponding to the address indicating the recording request position of the file system, and overwrites the file system at this recording position.
  • step Sl l NO
  • the overall control unit 115 determines whether or not a data read request is generated. (Step S15).
  • step S15 When a data read request is generated (step S15: YES), the general control unit 115 starts data read processing (step S16).
  • the overall control unit 115 first determines whether or not the read request position of the data to be read is registered in the differential list 31 (see FIG. 15). Step S41). [0117] When the read request position of data to be read is registered in the defect list 31 (step S41: YES), the general control unit 115 reads the data from the spare area 17 or 18 (step S42). Specifically, the overall control unit 115 reads the data from the address after saving corresponding to the address before saving indicating the reading request position.
  • step S41 when the read request position of the data to be read is not registered in differential list 31 (step S41: NO), general control unit 115 reads the data from the read request position (step S43).
  • the general control unit 115 controls the decoder 108 and the like, and performs data reproduction processing on the data read in the data reading processing (step S17 in FIG. 12).
  • step S15 NO
  • step S18 the general control unit 115 determines whether or not the ejection request for the recording medium 1 is generated.
  • step S18 When an ejection request is generated (step S18: YES), the overall control unit 115 ejects the recording medium 1 (step S19).
  • step S18 NO
  • the process returns to step S10, and execution of the application program is continued.
  • the recording medium mounted on the information recording / reproducing apparatus 100 is another recording medium that is not the recording medium 1, and the other recording medium is adopted by the information recording / reproducing apparatus 100 and V ⁇ However, when the data recording method or data reproducing method is adopted (step S2: NO in FIG. 11), the information recording / reproducing device 100 follows the UnknownPAC rule in the PAC recorded on the other recording medium. Operates (step S9).
  • the reproduction data only area 21 and the data recording area 22 are formed in the user data area 16 of the recording medium 1, and the software product 33 is recorded in advance as an embossed pit row in the reproduction only area 21.
  • the recording area 5 of the recording medium spare areas 17 and 18 that also serve to record the changed file system 38 that is not limited to the differential management are formed.
  • the recording position of the file system 38 after the change and only the initial file can be performed only by the differential management.
  • a differential management area 14 for recording a differential list 31 that also serves to indicate the correspondence with the recording position of the data system 34 is formed.
  • the information recording / reproducing apparatus 100 records the changed file system 38 in the spare area 17 or 18, and shows the correspondence between the changed recording position of the file system 38 and the initial recording position of the file system 34. Create or update Tatlist 31.
  • the file system 34 recorded in the reproduction-only area 21 in an unrewritable state can be substantially rewritten. For this reason, even when a single session file system is adopted, it becomes possible to appropriately add or rewrite user data to the data recording area 22. Therefore, it is possible to mass-produce the recording medium 1 on which the software product 33 that can be played back by itself is recorded and on which the user can record data at low cost.
  • PAC32 is recorded in the PAC recording area 15 of the recording medium 1, and the minimum required user data area for executing the application program recorded in the reproduction-only area 21 is stored in the PAC32.
  • Information indicating the size of 16 is described. Then, the information recording / reproducing apparatus 100 reads information indicating the size of the user data area 16 from the PAC 32, and secures in the recording area 5 at least a user data area 16 larger than the size indicated by this information.
  • the user data area 16 necessary for executing the application program recorded in the reproduction-only area 21 can always be secured in the recording area 5, and therefore the reproduction-only area can be secured.
  • the application program recorded in 21 can be executed reliably.
  • the UnknownPAC rule 32B in the PAC32 of the recording medium 1 describes information for prohibiting data recording for all areas in the recording area 5 except the drive area. Then, when the recording medium 1 is loaded into an information recording / reproducing apparatus that does not employ the data recording method for the recording medium 1, the information recording / reproducing apparatus performs recording excluding the drive area based on the UnknownPAC rule 32B. Recognize that data recording is prohibited for all areas in area 5. As a result, even if the recording medium 1 is attached to an information recording / reproducing apparatus that does not employ the data recording method for the recording medium 1, This information recording / reproducing apparatus can prevent erroneous data recording on the recording medium 1.
  • the case where one read-only area 21 is formed in the user data area 16 is taken as an example. Limited. Multiple playback-only areas may be formed in the user data area 16. In this case, the number of playback-only areas and the start and end addresses of each playback-only area are described in the PAC detailed information 32C. In addition, content data or application programs are recorded in advance as embossed pit rows in each reproduction-only area.
  • the case where one differential management area 14 is formed in the recording area 5 is taken as an example. However, a plurality of differential management areas are divided into a lead-in zone 11 and a lead-out zone. It is desirable to form each in 13. In this case, record the differential list 31 in one of the multiple differential management areas, and record a copy of the differential list 31 in each remaining differential management area.
  • the case where one PAC recording area 15 is formed in the recording area 5 is taken as an example. However, a plurality of PAC recording areas are assigned to the lead-in zone 11 and the lead-out zone 13. It is desirable to form each. In this case, PAC32 is recorded in one of the PAC recording areas, and a copy of this PAC32 is recorded in each remaining PAC recording area.
  • the software product 33 is recorded in the reproduction-only area 21, and the application program executable by the information recording / reproducing apparatus 100 is included in the entity data 35 of the software product 33.
  • the case is given as an example.
  • the entity data 35 may include only content data such as video data and audio data.
  • the structure of the recording area of the recording medium is the same as the structure of recording area 5 of recording medium 1 in FIG. 3 even when the session-at-once file system is adopted. .
  • Software product 90 is recorded in advance in reproduction-only area 21 in FIG.
  • the file system 91 included in the software product 90 is a session-at-once file system.
  • a new file system 94 is generated, and this file system 94 is recorded in the data recording area 22 together with the user data 93.
  • the file system 94 information for managing a portion in which the user data 93 and the file system 94 are recorded in the reproduction-only area 21 and the data recording area 22 is described. Thereafter, a request is made to record a copy of the file system 94 at an initial recording location of the file system 91. At this time, the file system rewriting process in FIG. 14 is executed. As a result, a copy of the file system 94 is recorded in the spare area 17 or 18.
  • the software product 33 in FIG. 8 is a specific example of the first data
  • the user data 36 or 37 is a specific example of the second data
  • the data recording area 22 is a specific example of the rewritable area
  • the spare area 17 or 18 is a specific example of the changed data recording area.
  • the differential management area 14 is a specific example of the recording position correspondence information recording area
  • the differential list 31 is a specific example of the recording position correspondence information.
  • PAC record area 15 is a specific example of the access management information area
  • PAC32 is a specific example of the access management information record.
  • the UnknownPAC rule 32B in PAC32 is a specific example of the record prohibition notice information.
  • the lead-in zone 11 or the lead-out zone 13 is the management information recording area. This is a specific example.
  • the recording unit 106 in FIG. 10 is a specific example of the recording unit
  • the determination unit 111 is a specific example of the determination unit
  • the recording control unit 112 is a specific example of the control unit
  • 113 is a specific example of the recording position correspondence information generating means.
  • step S22 in FIG. 13 is a specific example of the determination process
  • step S23 and step S25 are specific examples of the control process
  • step S24 is a specific example of the recording position correspondence information generation process. .
  • the information recording / reproducing method executed by the information recording / reproducing apparatus 100 can also be realized in the form of a recording medium on which a computer program, a computer program product, or a computer program is recorded. Is possible.
  • the present invention can be appropriately changed without departing from the gist or concept of the invention which can be read from the scope of the claims and the entire specification, and an information recording medium and information recording accompanying such a change are possible.
  • An apparatus, an information recording method, and a computer program are also included in the technical idea of the present invention.
  • the recording medium of the present invention can be used for an optical disc such as a Blu-ray disc.
  • the information recording apparatus and information recording method of the present invention can be used in, for example, an optical disc drive, an optical disc recorder, or a computer.

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

Abstract

La présente invention concerne un support d'enregistrement (1) comprenant une zone de données d'utilisateur (16), dans laquelle sont formées une zone de reproduction exclusive (21) et une zone d'enregistrement de données (22). Dans la zone de reproduction exclusive (21), un système de fichier (34) et des données d'entité (35) sont enregistrés préalablement sous forme d'une séquence de creux en relief. Dans la zone d'enregistrement de données (22), les données d'utilisateur (36) sont enregistrées. Par conséquent, lorsque le système de fichier (34) doit être modifié, le système de fichier modifié (38) est enregistré dans une zone réserve (17). Dans une liste de défectuosités (31), des informations représentant la relation de correspondance entre la position où le système de fichier modifié (38) est enregistré et la position où se trouve le système de fichier d'origine (34) sont décrites. Ainsi, le système de fichier (34) enregistré dans un état non réinscriptible dans la zone de reproduction exclusive (21) peut sensiblement être réinscrit.
PCT/JP2006/318170 2006-09-13 2006-09-13 Support d'enregistrement comprenant une zone de reproduction exclusive et une zone réinscriptible, dispositif d'enregistrement d'information, et support d'enregistrement d'information Ceased WO2008032377A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/318170 WO2008032377A1 (fr) 2006-09-13 2006-09-13 Support d'enregistrement comprenant une zone de reproduction exclusive et une zone réinscriptible, dispositif d'enregistrement d'information, et support d'enregistrement d'information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/318170 WO2008032377A1 (fr) 2006-09-13 2006-09-13 Support d'enregistrement comprenant une zone de reproduction exclusive et une zone réinscriptible, dispositif d'enregistrement d'information, et support d'enregistrement d'information

Publications (1)

Publication Number Publication Date
WO2008032377A1 true WO2008032377A1 (fr) 2008-03-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/318170 Ceased WO2008032377A1 (fr) 2006-09-13 2006-09-13 Support d'enregistrement comprenant une zone de reproduction exclusive et une zone réinscriptible, dispositif d'enregistrement d'information, et support d'enregistrement d'information

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Country Link
WO (1) WO2008032377A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02306430A (ja) * 1989-05-19 1990-12-19 Fujitsu Ltd 修正可能光ディスクと記録再生方法
JPH0574052A (ja) * 1991-09-13 1993-03-26 Canon Inc 情報記録媒体の情報管理方法
JPH08195033A (ja) * 1995-01-13 1996-07-30 Sony Corp データ記録方法、データ再生方法、データ記録再生方法及びディスク状記録媒体
JP2002056543A (ja) * 2000-06-29 2002-02-22 Samsung Electronics Co Ltd 再生専用貯蔵領域と記録可能な貯蔵領域とを有する光記録媒体及び記録／再生装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02306430A (ja) * 1989-05-19 1990-12-19 Fujitsu Ltd 修正可能光ディスクと記録再生方法
JPH0574052A (ja) * 1991-09-13 1993-03-26 Canon Inc 情報記録媒体の情報管理方法
JPH08195033A (ja) * 1995-01-13 1996-07-30 Sony Corp データ記録方法、データ再生方法、データ記録再生方法及びディスク状記録媒体
JP2002056543A (ja) * 2000-06-29 2002-02-22 Samsung Electronics Co Ltd 再生専用貯蔵領域と記録可能な貯蔵領域とを有する光記録媒体及び記録／再生装置

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