WO2001004894A1 - Disque optique et lecteur de disque optique - Google Patents
Disque optique et lecteur de disque optique Download PDFInfo
- Publication number
- WO2001004894A1 WO2001004894A1 PCT/JP2000/004474 JP0004474W WO0104894A1 WO 2001004894 A1 WO2001004894 A1 WO 2001004894A1 JP 0004474 W JP0004474 W JP 0004474W WO 0104894 A1 WO0104894 A1 WO 0104894A1
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- WO
- WIPO (PCT)
- Prior art keywords
- data
- area
- management
- recording
- optical disk
- Prior art date
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00137—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to contents recorded on or reproduced from a record carrier to authorised users
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—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
Definitions
- the present invention generally relates to an information record carrier using optical means and a driving device thereof, and in particular, it is possible to control access to the user data of an information record carrier storing user data used by a user.
- the present invention relates to an information record carrier to be driven and a drive device for driving the information record carrier.
- the present invention relates to an optical disk for storing a security code for accessing an optical disk for recording, for example, video information, audio information, text information, software, and the like, and a drive device thereof.
- Optical discs are generally divided into a lead-in area, a data area, and a lead-out area.
- the read-in area is an area containing management information outside the user data area, and is provided on the side that accesses the disk first.
- the read-out area is a buffer area that indicates the end of reading, and is provided at the innermost circumference or the outermost circumference facing the read-in area.
- the lead-in area and the readout area are areas that are not accessed by the user, and generally store control information and test information.
- the data overnight area is an area that can be used by the user, and a recordable / reproducible disc uses this area to record information (user data overnight). Addresses are similarly added to the management area and the data area, and the optical head can access both areas depending on the address.
- the lead-in area, the lead-out area, and the user area are recorded by the same recording method.
- the conventional method of making the optical disk unwritable can secure the stability of storage, but cannot secure the leakage of the recorded contents.
- confidentiality is not preferable because the system becomes complicated and the price increases.
- confidentiality can be maintained by partially changing the standardized optical disks, but this requires the construction of special, complex, and expensive systems. Is required.
- the present invention has been made from this point of view, and provides an optical disc with a confidential ID for managing the recording and reproduction of the optical disc, and as a result, stable storage of the recorded content and confidentiality of the recorded content.
- the purpose is to keep the cost low.
- An optical disc is recordable and playable, has a user data area and a management area, and is configured such that the user data area and the management area are continuously integrated.
- Each of the recording areas of the user data area and the management area is divided on the basis of a turn, and an address is added to each of the divided units of the turn, and a plurality of data are assigned to each of the units to which the address is added.
- the data is divided into columns and recorded, and the error detection code and the management data including ID data are circulated.
- the recording is performed in at least a part of the management area having an address of a part of the recording area to be recorded.
- the management data is recorded in a part or all of the management area to which the address is assigned. In any case, the management data need not be recorded all around the disc. Also, the management data stores only the information amount corresponding to the narrow recording area.
- a recording method as an exemplary aspect of the present invention is capable of recording and reproducing, has a user data area and a management area, and is configured such that the user data area and the management area are continuously integrated.
- the recording areas of the user data overnight area and the management area are divided on the basis of the circumference, and an address is added to each of the divided units of the circumference, and the address is added for each unit to which the address is added.
- a recording method for an optical disc that performs recording by dividing into a plurality of data strings, and has a minimum cycle time that is different from a minimum cycle time used for a synchronization pattern for reproducing the data that is divided into the data strings and recorded. Data is recorded in a part of the management area by a synchronization pattern. Such a recording method performs recording using a synchronization pattern using two different minimum basic periods.
- an optical disk drive as an exemplary aspect of the present invention is capable of recording and reproducing, has a user data overnight area and a management area, and the user data area and the management area are continuously integrated. Each of the recording areas of the user data overnight area and the management area is divided on the basis of a turn, and an address is added to each of the divided units of the turn, and each of the units to which the address is added is added.
- An optical disk drive capable of driving an optical disk that performs recording by dividing the optical disk into a plurality of data streams comprising: an optical pickup capable of reproducing the optical disk; and an optical pickup connected to the optical pickup, the optical pickup being connected to the optical pickup.
- a signal processing device for processing the output of the pickup, and a security program and security data having information on the management data are stored.
- the optical pickup and the signal processing device are operated only when the management data operated by the optical pickup matches the security data and no error is detected during the reproduction operation.
- Such an optical disk drive is compatible with the above-described optical disk.
- FIG. 1 is a plan view of an optical disk of the present invention.
- FIG. 2 is a schematic block diagram for explaining the structure of the lead-in area shown in FIG.
- FIG. 3 is a schematic block diagram for explaining the internal structure of data segment 0 shown in FIG.
- FIG. 4 shows a drive device capable of reproducing the optical disk shown in FIG.
- FIG. 5 is a flowchart showing an example of a security program applicable to FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- an optical disc 100 of the present invention will be described with reference to FIGS.
- the optical disc 100 of the present invention is a rewritable optical disc having a lead-in area 10, a lead-out area 30, and a user data area 60 existing therebetween.
- FIG. 1 is a plan view of the optical disc 100 of the present invention.
- the lead-in area 10 and the lead-out area 30 constitute a management area 50. In the management area 50, management data described in detail later is described as needed.
- the positional relationship between the lead-in area 10 and the lead-out area 30 may be reversed.
- the lead-in area 10 is an area including the management data outside the user data area 60, and is provided on the side that accesses the disk first.
- the lead-out area 30 is a buffer area indicating the end of reading, and is provided at the innermost circumference or the outermost circumference facing the lead-in area 10.
- the lead-in area 10 and the lead-out area 30 are areas that are not accessed by the user, and generally store control information and test information.
- the data area 600 is an area that can be used by the user, and the recordable / reproducible disc 100 uses this area to store video information, audio information, text information, software and other information (user data). Can be recorded.
- the optical disc 100 controls access to user data by management data, which will be described in detail with reference to FIGS. 2 and 3 below. If the management data is recorded as permanent information when the optical disc is manufactured, stable and reliable data recording of the optical disc system becomes possible.
- FIG. 2 is a schematic block diagram for explaining a data structure common to the management area and the user data overnight area.
- the management areas 10 and 30 have the same structure, and one track (one round) is divided into n frames, that is, frame 0 to frame (n ⁇ 1). Each frame is divided into a plurality of segments having one address segment and a plurality of data segments. As shown in FIG. 2, for example, m + 1 data segments 0 to m are provided in the data segment.
- the management areas 10 to 30 may have different numbers of frames and data segments, respectively.
- the optical disc 100 of the present embodiment writes management data in a part of the data segment belonging to one frame.
- the first two data segments of frame 0 in lead-in area 10 ie, data segments 0 and 1
- the last two data segments of frame 0 in lead-out area 30 ie, the management data may be written to the data segments (m-1) and m).
- the data segments 0 and 1 of frame 0 in the lead-in area 10 and the data segment (m-1) of frame 0 in the read-out area 30 and the four data segments of m Is composed of management data.
- the management data may be recorded in the data segments 0 to m of frame 0 in the lead-in area 10 and the management data may not be recorded in the readout area 30.
- the optical disc 100 of the present embodiment does not record management data on all tracks in the first place.
- the management data can be recorded discretely.
- discrete indicates that all data segments storing the management data are not continuous.
- the discrete arrangement may span different data segments within the same frame (ie, the same address), may span different frames (ie, different addresses), and may have different management areas (ie, , Lead-in area 10 and lead Out region 30).
- the management data manages access to the user data, and thus has an effect of maintaining confidentiality of the user data.
- the level of confidentiality depends on the existence of management data and the fact that the management data cannot be easily determined.
- the level of confidentiality generally increases with the complexity of the system.
- Complex systems on the other hand, increase costs and reduce reliability. Reliability levels and costs generally increase with the simplicity of the system.
- the present inventors have found that in order to solve this contradiction, it is most preferable to reduce the information amount of the management data so that the existence of the management data itself is not detected. If no management data is found, the management data is not determined, and if the amount of information is small, it can be simplified.
- the present inventors have considered that the management data of this embodiment does not need the information amount of the conventional management area such as the control track of the ISO standard magneto-optical disk in the management data of the present embodiment as a result of considering the function of the management data described later. Was found.
- the present inventors have discovered that it is preferable to use the management area 50 instead of the user data overnight area 60 to store management data.
- the management area 50 is not an area to which the user normally accesses, and thus can function as an area exclusively for confidentiality. Further, if the user data area 60 is subjected to the warping modulation or the like, the compatibility with the conventional optical disk and disk drive device is lost and the cost is increased. As a result, the optical disc 100 of the present embodiment allows the use of the currently standardized optical disc.
- the present inventors have found that limiting the recording area of the management data to a part of the track is effective in making the presence of the management data inconspicuous. Therefore, the area in which the management data is recorded does not need to cover the entire circumference (circle) of the disk 100, and only the area necessary and sufficient for recording the management data may be secured.
- control information and the like were recorded for each track, and Service-to-Self surveying with a microscope or the like in order to determine management data was performed on a track-by-track basis.
- the recording area of the management data is limited as in this embodiment, the above-mentioned malicious party may judge that there is no management data by looking at only a part of the track, or may give up investigating the management data.
- the management data can be divided and recorded, and it is preferable to record the management data at a plurality of locations on the management area 50 with a physical distance therebetween. I discovered that. The contents of the management data recorded in multiple places are the same, Z or different. Recording the same management data redundantly at a plurality of locations avoids a temporary loss due to management data defects and improves reliability.
- the management data described in the data segment 1 shown in FIG. 2 may be redundant with the management data described in the data segment 0.
- the management data is redundantly recorded in both the lead-in area 100 and the lead-art area 30. It is preferable to do so.
- management data with different contents in multiple locations enhances the reliability of data management because meaningful management data cannot be obtained unless all management data is discovered. .
- either data segment may define how other management data segments are combined.
- the feature of the above-mentioned arrangement of the management data is that it helps to prevent the management data from being easily discovered even if a third party tries to find the management data by examining the optical disk 100 with a microscope. are doing. Note that unlike this embodiment, only one of the above-described features may be used. Further, the management data may be divided into a plurality of separated data segments only in the management information area 10 or only in the management information area 30.
- the management data of the present embodiment includes ID data and code data for which an error can be detected.
- the management data may further include data for assisting the reproduction and use of the user data recorded in the data area 60. It is preferable that the management data be recorded not in pre-pits but in pre-wobbles due to the difficulty of visual identification with a microscope.
- the ID data included in the management data is used as an identifier of the optical disc 100.
- the optical disc 100 can be configured so that it cannot access all or a part of the stored user data unless its ID is identified in a dedicated drive device described later. .
- a person who steals the optical disk 100 of the present embodiment and tries to reproduce it with a general-purpose drive device does not have a function of discriminating the ID data of the optical disk 100 because such a drive device has no function.
- the management data further includes an error detectable code data, for example, a parity code.
- an error detectable code data for example, a parity code.
- the error detection code when reading the management data, it is possible to determine whether or not there is a failure due to a defect in the management data or a data segment storing the management data. This makes it possible to extract and use only truly valid management data. Therefore, the error detection code increases the reliability of the management data.
- the management data has an error detection function according to the error detection code, it is not a simple ID data but also has a forgery prevention function.
- the present inventors have discovered that it is preferable to record the management data using a clock different from the clock used to record the user data.
- the confidentiality of the management data can be reduced by using a dedicated driving device capable of generating two types of clocks so that the management data cannot be reproduced unless the optical disk 100 is reproduced. Raising the level.
- the management data is used alone or in cooperation with the data stored in the disk drive in advance to maintain the confidentiality of the user data.
- An example of the management data that functions independently is, for example, a predetermined password (password).
- a security function that works in cooperation, for example, the ID number of the optical disk 100 is written in the security system, and the hard disk of the disk drive is applied in advance. ID number and ID that extracts the ID number from optical disk 100 and stores it For example, when a program for comparing with a number is included.
- the data stored in the disk drive may be stored in a medium such as a single disk or a CD-ROM and passed to the user.
- a well-known cryptographic protocol can be involved with security data and data stored on the Z or hard disk.
- the data stored in the disk drive is transmitted online (such as on the Internet or on a commercial online line), and a digital signature and a public Z-private key are used.
- FIG. 3 is a schematic block diagram for explaining the internal structure of data segment 0 shown in FIG.
- this structure is not limited to the segment 0 overnight.
- the overnight segment 0 illustratively has a clock mark 72, buffer areas 74 and 76, a synchronization pattern 78, control data 80, and a postamble 86.
- the clock mark 72 is an area for defining a synchronous clock signal (frequency) for data reproduction, collects all clocks of the clock mark of each segment, and creates a clock signal for data reproduction using a PLL.
- the management data is stored in the data segments (m-1) and m in the read-in area 30 in the lead-in area 10 and the data segments (m-1) and m in the read-in area 30 of the data segments shown in FIG.
- the synchronization clock signal for reproducing the management data has an integral multiple of the period of the synchronization clock signal for reproducing the user data.
- the buffer areas 74 and 76 function as a buffer although the clock mark 72 always pulls in.
- the synchronization pattern 78 is an area for defining a trigger indicating a starting point for reading out control data.
- the control data 80 has two data 82 and 84, and stores the management data. The two data stored in the control data 80 may be used in cooperation with each other or only one of them may be used as the management data.
- data 84 may be configured as parity data of data 82. If necessary, each data segment that stores the management data One management data may be configured by combining data in each control data area of the unit in a complicated manner.
- the postamble 86 is a spare area for adjusting the bit overflow.
- the optical disc 100 of the present invention records and reproduces management data at a clock frequency different from the clock frequency used to reproduce user data.
- the same clock frequency as the clock frequency used to reproduce the user data is used for recording and reproduction from the clock mark 72 to the synchronization pattern 78.
- a clock frequency different from the clock frequency used to reproduce the user data is used for recording and reproduction of the control data 80. That is, the management area 50 is reproduced with the clock for user data, synchronization is performed with the reproduced clock, the clock is changed to reproduce the control data 80, and after the reading is completed, the original user data is reproduced. It will return to the evening clock.
- the optical disc 100 broadly differs in the recording / reproducing method between the user data and the management data, so that even if the existence of the management data is found, the same reproduction as the user data is performed. By the way, it will not be possible to play the management data overnight.
- the clock of the management data is an integral multiple of the clock of the user data. Therefore, the optical disc 100 of the present invention has improved confidentiality in management data.
- the management data is reproduced by the same reproduction method as that of the user data, it is more preferable to detect an error and display the result on a display. Note that the clock may be selectively changed for each data segment.
- the modulation method used for the user data and the modulation method used for the management data may be changed, or the modulation method may be changed within the management data.
- NRZ may be used for data segments 0 and 1
- another Bi-Phase may be used for the data segments (m-1 1) and m.
- the modulation method use any other modulation method known in the art, such as FM, PM, M & M, 1Z7, 2/7, 8/16, 4/15, and 8/14. be able to.
- a program operating in cooperation with information on what clock or modulation method to use and security data can be given to a user who has a legitimate authority in advance.
- the user may store such information and the program in the storage device of the optical disk drive.
- Windows 98 as application It is easy for those skilled in the art to build such a program that runs on any of the operating systems.
- the optical disk drive 200 of the present invention includes an optical pickup 202, a signal processing device 204, a SCSI interface 206, a PCI bus 208, a CPU 210, It has a memory 2 12, an IDE bus 2 14, a hard disk (drive) 2 16, and a display 2 18.
- the optical pickup 202 reads out both the management data and the user data of the optical disc 100 and transmits them to the signal processing device 204. However, as will be described later, when the management data is present on the optical disc 100, the optical pickup 202 of the present embodiment operates according to the program stored in the hard disk 210. Since the user data is reproduced after extracting the first, the management data and the user data are not supplied to the signal processing device 204 at the same time.
- the signal processing device 204 can extract the original information by demodulating the management data and the user data as the RF signal.
- the output of the signal processing device 204 can be output to a display 218 or a speaker (not shown). Since both the management data and the user data are recorded as the same RF signal, only one signal processing device 204 is sufficient.
- security data is included in the user data area separately from user data in the user data area by means of a second modulation means (population) in order to maintain confidentiality.
- two signal processing devices are required, so that the driving device becomes complicated and cost increases.
- one signal processing device 204 is sufficient, which is preferable. This will be further described in connection with the error processing described later.
- the main memory 212 includes, for example, RAM and ROM, and programs necessary for the operation of the CPU 210 are temporarily loaded from the hard disk 216 or a key board (not shown). It temporarily stores input from input means such as a mouse, joystick, etc., and stores information necessary for system operation.
- optical disk drive 200 of the present invention is not limited to these input / output means, and all the input / output means for achieving the same effect as the optical disk drive 200 of the present invention are included in the optical disk drive 200 of the present invention. Can be applied.
- the hard disk 2 16 includes programs (such as various drivers) necessary for the operation of the operating system such as Windows 98 and other components, and a security program related to the optical disk 100 of the present invention.
- the security program is a program supplied by the manufacturer or a contractor from the manufacturer separately from the optical disk 100 when the optical disk 100 is purchased, and operates in cooperation with the management data of the optical disk 100. I do.
- the purpose of the security program is to prevent unauthorized users from gaining access to user accounts. Needless to say, the required level of confidentiality depends on the confidentiality and confidentiality of the user.
- the security program has information such as the position on the optical disc 100 where the management data is recorded and the modulation method used for recording.
- the CPU 210 instructs the optical pickup 202 to retrieve a management data (for example, an ID number or other code of the optical disk 100) from the optical disk 100 (step 1). 0 0 2).
- a management data for example, an ID number or other code of the optical disk 100
- the information on the position of the management data and the demodulation method (including clock information) at the time of reproduction is stored in the security program.
- the management data required by the CPU 210 and the predetermined data stored in the hard disk 210 for example, the optical disk 100 that is previously permitted to be reproduced by the optical disk drive 200. ID list) (step 1.004) to determine whether they match (in this case, partly match) (step 1004).
- step 106 If the management data cannot be read successfully, if the read management data cannot be understood, and if the management data is incorrect, error processing is performed (step 106). In the case of error processing, the indication is displayed on the display 218 to prompt a retry, etc. User data cannot be reproduced. As a result, it is possible to prevent user data from leaking to the outside in the evening. If the management data matches, the CPU 2.10 allows the signal processing device 204 to reproduce the user data (step 1008). Alternatively, if the management data does not match, only access to some user data that does not require confidentiality may be allowed.
- demodulation is preferably performed using the same demodulation means.
- the clock cycle used for recording and reproduction of the management data is changed from that used for the user data, so that the same demodulation circuit is used for the user data and the management data.
- the demodulation method is different. Further, error processing by changing the clock cycle is easy. When the synchronization pattern is detected, accurate management data can be read out by demodulating by changing to the management data packet cycle.
- Such a security program determines whether or not the optical disk 100 is being reproduced on the valid optical disk drive 200, but if necessary, the ID number of the user may also be determined.
- the confidentiality is further improved by judging whether or not a user having the right authority operates the optical disk drive device 200.
- the user's ID number can be input to the optical disk drive 200 from input means (not shown) such as a keyboard. If additional confidentiality is required, well-known biometric devices such as fingerprint readers and retina recognizers may be used.
- the optical disk drive 200 is connected online to the central controller via a dedicated commercial line such as the Internet or the United States Online. First, if the user is authenticated by the central controller, confidentiality is improved. Will do.
- the security program and predetermined data used for such a program as well as the system program are stored in the hard disk 2 16. I'm sorry.
- the storage device is not limited to a hard disk, and if there is no problem with the storage capacity, a non-volatile memory such as a flash memory is used. A spontaneous semiconductor memory or the like can also be used.
- the optical disk drive 200 of the present invention can perform not only reproduction but also recording of the optical disk 100.
- the optical disk of this embodiment is a rewritable 100
- the user can add desired data to the previous user data.
- the optical disc 100 and the optical disc drive 200 may selectively input and collate additional information at the time of recording to increase the confidentiality more than at the time of reproduction. This can prevent, for example, distribution of the optical disc 100 in which part of the information has been rewritten to incorrect information. Access is permitted. ⁇ Only authorized users can record the user data overnight, so that previously recorded user data is prevented from being changed unprotected.
- the present invention it is possible to stably store recorded contents on a standardized optical disk that is recordable and reproducible, and to restrict access to the optical disc in order to keep the recorded contents confidential. It proposes an effective method.
- the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes can be made within the scope of the gist.
- the type of disk CD, magneto-optical disk, DVD, etc.
- the management data is recorded in the management area having a part of the address of the circulating recording area, its existence is not easily found. Therefore, the confidentiality of the management data is improved compared to the case where the management data is recorded on a circular basis.
- optical disk recording method of the present invention since a plurality of synchronization patterns are used, desired data can be reproduced only when a correct synchronization pattern is used, thereby increasing the confidentiality of data. ing.
- the user data of the optical disk of the present invention cannot be accessed unless a predetermined condition is satisfied. Therefore, the confidentiality of the user data on the optical disk has been improved.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP00944271A EP1197966A4 (en) | 1999-07-09 | 2000-07-06 | OPTICAL DISK AND OPTICAL DISK DRIVE |
US10/030,244 US6760290B1 (en) | 1999-07-09 | 2000-07-06 | Optical disc and optical disc drive |
AU58483/00A AU5848300A (en) | 1999-07-09 | 2000-07-06 | Optical disk and optical disk drive |
HK02106615.0A HK1046765A1 (zh) | 1999-07-09 | 2002-09-09 | 光盤和光盤驅動器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11/195212 | 1999-07-09 | ||
JP11195212A JP2001023351A (ja) | 1999-07-09 | 1999-07-09 | 光ディスク及び光ディスク駆動装置 |
Publications (1)
Publication Number | Publication Date |
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WO2001004894A1 true WO2001004894A1 (fr) | 2001-01-18 |
Family
ID=16337335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2000/004474 WO2001004894A1 (fr) | 1999-07-09 | 2000-07-06 | Disque optique et lecteur de disque optique |
Country Status (8)
Country | Link |
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US (1) | US6760290B1 (ja) |
EP (1) | EP1197966A4 (ja) |
JP (1) | JP2001023351A (ja) |
CN (1) | CN1360720A (ja) |
AU (1) | AU5848300A (ja) |
HK (1) | HK1046765A1 (ja) |
TW (1) | TW472234B (ja) |
WO (1) | WO2001004894A1 (ja) |
Cited By (1)
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US7088661B2 (en) * | 2001-07-25 | 2006-08-08 | Sanyo Electric Corp., Ltd. | Disk medium, information recording device and information reproducing device |
Families Citing this family (3)
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JP4300727B2 (ja) * | 2001-10-09 | 2009-07-22 | ソニー株式会社 | ディスク記録媒体、ディスクドライブ装置、再生方法、ディスク製造方法 |
AU2003303260A1 (en) * | 2002-12-20 | 2004-07-14 | Koninklijke Philips Electronics N.V. | Method for dividing user storage space of an optical disc, optical disc having divided storage space, and method and device for storing information |
KR100667753B1 (ko) * | 2004-02-28 | 2007-01-11 | 삼성전자주식회사 | 정보 저장 매체, 데이터의 기록 방법 및 장치 |
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-
2000
- 2000-07-06 WO PCT/JP2000/004474 patent/WO2001004894A1/ja not_active Application Discontinuation
- 2000-07-06 CN CN00810116A patent/CN1360720A/zh active Pending
- 2000-07-06 AU AU58483/00A patent/AU5848300A/en not_active Abandoned
- 2000-07-06 US US10/030,244 patent/US6760290B1/en not_active Expired - Fee Related
- 2000-07-06 EP EP00944271A patent/EP1197966A4/en not_active Withdrawn
- 2000-07-07 TW TW089113238A patent/TW472234B/zh not_active IP Right Cessation
-
2002
- 2002-09-09 HK HK02106615.0A patent/HK1046765A1/zh unknown
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JPH09115242A (ja) * | 1995-08-10 | 1997-05-02 | Sony Corp | データ伝送方法、データ記録装置、データ記録媒体及びデータ再生装置 |
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US7088661B2 (en) * | 2001-07-25 | 2006-08-08 | Sanyo Electric Corp., Ltd. | Disk medium, information recording device and information reproducing device |
Also Published As
Publication number | Publication date |
---|---|
US6760290B1 (en) | 2004-07-06 |
JP2001023351A (ja) | 2001-01-26 |
TW472234B (en) | 2002-01-11 |
AU5848300A (en) | 2001-01-30 |
CN1360720A (zh) | 2002-07-24 |
EP1197966A1 (en) | 2002-04-17 |
EP1197966A4 (en) | 2006-09-06 |
HK1046765A1 (zh) | 2003-01-24 |
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