WO2006030897A1 - 光記録ディスク - Google Patents
光記録ディスク Download PDFInfo
- Publication number
- WO2006030897A1 WO2006030897A1 PCT/JP2005/017152 JP2005017152W WO2006030897A1 WO 2006030897 A1 WO2006030897 A1 WO 2006030897A1 JP 2005017152 W JP2005017152 W JP 2005017152W WO 2006030897 A1 WO2006030897 A1 WO 2006030897A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical recording
- data
- capacity
- disk
- recording
- Prior art date
Links
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
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
Definitions
- the present invention relates to an improvement in an optical recording disk that records personal computer data, video and music data as optical data.
- optical recording disks that record data such as programs used in personal computers (hereinafter abbreviated as PC), video data, music data, and the like as optical data have become widespread.
- Video data recorded on a DVD or music data recorded on a music CD is referred to here as “optical data”.
- Such optical recording discs include read-only discs such as DVD-ROM, writable discs such as DVD-R, 0 ⁇ 0—1 ⁇ nya 0 ⁇ 0—1 ⁇ 01, etc. There is a replaceable disc.
- optical disks such as CD-ROM, CD-R, and CD-RW are also available as those with a small recording capacity.
- DVD Digital Versatile Disc
- ROM CD Compact Disc
- ROM is used to store data on the disc by pressing it with a press master made based on the data. It is provided in a recorded state or in a state where data is burned onto a disc with a laser beam and recorded.
- optical recording discs such as DVD-R, CD-R, DVD-RW, CD-RW, DVD-RAM, etc. can be used to store data arbitrarily on the user side using data recording software.
- the disc is writable or rewritable.
- Patent Document 1 discloses such an optical recording disk.
- Such an optical recording disk records data by forming pits using laser light in grooves (groups) provided at high density on the disk, and has a large capacity on a small disk. It is possible to record data.
- a DVD can record a large amount of data that is more than six times as large as a CD, and can be used for data storage. Is becoming mainstream.
- a coloring agent dissolved in a solvent is applied onto the disk, and the solvent is volatilized while rotating the disk. It is manufactured by a manufacturing method such as a spin coating method for forming a film layer.
- Patent Document 1 Japanese Patent Laid-Open No. 2003-054128
- the recording film layer is formed by a manufacturing method such as the spin coating method as described above, it is difficult to make the recording film thickness uniform.
- the thickness of the recording film layer is likely to vary in the vicinity of the outermost peripheral portion of the disk. Therefore, variations in the recorded data are likely to cause data reading errors.
- the present invention has been proposed in view of such circumstances, and has improved manufacturability and reliability by reducing the error occurrence rate when recording data having a capacity within a standard range.
- An object is to provide an optical recording disk.
- an object of the present invention is to provide an optical recording disk that can prevent unauthorized copying.
- the present invention proposed to achieve the above object maintains the standardized writing and reading compatibility in an optical recording disk having a predetermined standardized recording capacity.
- the optical recording disk is characterized in that the recording capacity is increased up to 5% of the standardized recording capacity.
- the optical recording disk irradiates a laser beam to a groove (group) provided on the disk. Data is recorded by forming pits in the recording film layer.
- the recording capacity that can be recorded on the optical recording disk is increased within a range of 5% or less of the standardized recording capacity while maintaining the compatibility of writing and reading. Therefore, even when data of a size corresponding to a standardized predetermined recording capacity is recorded, an area where no data is recorded is formed in the vicinity of the outer peripheral side of the disc.
- the data when data smaller than the standardized recording capacity is recorded on the optical recording disk of the present invention, the data is recorded in the vicinity of the outermost periphery where a disk reading error is likely to occur. Therefore, it is possible to reduce the error rate and improve the reliability.
- the increase in recording capacity exceeds 5%, it becomes difficult to maintain standardized writing and reading compatibility. Therefore, it is desirable that the increase in recording capacity be 5% or less of the standardized recording capacity.
- the lower limit value of the increase in recording capacity is set to 1% of the standardized predetermined recording capacity.
- an area in which data of a predetermined width is not recorded in the vicinity of the outer periphery of the disk is generated by increasing the recording capacity of the disk by 1% or more of the standardized predetermined recording capacity. It is possible to reduce the error rate.
- the width of the area where no data is recorded on the outer periphery of the disc is reduced. There are few.
- the minimum value of the increase in recording capacity is 1% or more of the standardized predetermined recording capacity. If you set the increase in recording capacity to about 3%, It is ideal for both reducing the occurrence rate of reading errors and maintaining the compatibility of writing and reading.
- the above-described optical recording disk is a DVD or a CD.
- DVD-ROM When the present invention is applied to DVD-ROM, DVD-R, DVD-RW, DVD-RAM, it is possible to reduce the incidence of errors related to data recording and Z or data reading. If applied to CD-ROM, CD-R, and CD-RW, the error rate can be reduced as with DVD media.
- a file related to the automatic execution process of the optical recording disk at the time of loading in the disk drive is recorded in an area of the optical recording disk that exceeds the standardized predetermined recording capacity. did.
- the file related to the automatic execution process is executed in the middle of a series of automatic execution processes when an optical recording disk is loaded into a disk drive.
- FIG. 1 is a schematic diagram showing a data recording area of an optical recording disc (DVD-R) according to an embodiment of the present invention.
- FIG. 2 is a schematic view showing a state where data is recorded on the optical recording disk shown in FIG. Explanation of symbols
- FIG. 1 is an explanatory diagram showing a data recording area of the optical recording disk (DVD-R) 1 of this embodiment.
- FIG. 2 is a schematic diagram showing a state in which data is recorded on the optical recording disk 1 of FIG.
- the optical recording disk 1 of the present embodiment is a disk having the same standardized outer shape as a conventional DVD-R.
- the recording capacity of the conventional DVD-R is 4.7 GB, but the recording capacity of the optical recording disk 1 of this embodiment is 150 MB more than the recording capacity of the conventional DVD-R. Yes.
- the recording capacity of the optical recording disk 1 of the present embodiment is approximately 3.2% larger than the recording capacity of 4.7 GB standardized in the conventional DVD-R.
- the recording capacity is increased by increasing the track density of the physical format applied to the optical recording disk 1.
- the optical recording disk 1 is an area surrounded by a circle 11 having a radius of 22.6 mm from the center of the disc and a circle 12 having a radius of 58 mm from the center.
- it has a data recording area 10 in which a recording film layer 10a is formed.
- the recording capacity of this data recording area 10 is set to 4.85GB.
- the lead-in data controls writing and reading of the optical recording disk 1.
- Data including physical format information, disk size, maximum transfer rate information, number of layers, track path direction, full ROM power, partial ROM power, recording linear density, track density, start sector and end sector number information.
- the lead-out data includes session end data for ending data recording.
- the recording film layer thickness variation during the warping of the disk or during the production of data is likely to occur.
- the error rate is high when reading stored data.
- the recording capacity of the optical recording disk 1 is increased by about 3.2% from the recording capacity of 4.7 GB which is the conventional standard.
- the quality of the optical recording disk 1 can be improved. Therefore, errors in data recording and errors in reading Z or data can be effectively suppressed, and reliability can be improved. Furthermore, the number of inferior products can be drastically reduced, and the manufacturing cost can be reduced.
- the present invention is applied to DVD-RW, DVD-RAM, or DVD-ROM instead of the force DV D-R described by taking DVD-R as an example of the recording medium. It is also possible to implement.
- These optical recording media may be manufactured using a press original plate or may be manufactured by baking with a laser beam.
- the present invention can be implemented for CD-R, CD-RW, or CD-ROM instead of DVD.
- These optical recording media are also manufactured using press masters. Or you may manufacture by baking with a laser beam.
- the number of recording layers is not mentioned, but the present invention can be applied to a DVD having one or two recording layers.
- the type of data to be recorded is not limited.
- the optical recording disk 1 can be used to record a program used for a PC, accompanying data, video data, music data, or the like. .
- FIG. 1 An example of a configuration for performing copy protection is shown in FIG. 1
- the Protect.exe file is recorded in an area 16 exceeding 4.7 GB standardized by the conventional DVD-R.
- the Autorun.inf file which is a text file, is changed so that the execution file to be processed is changed from the autorun.exe file to the Protect.exe file recorded in area 16, and then changed again to the autorun.exe file. Describes the order of the files to be executed.
- the Autorun.exe file is executed first, then the Protect.exe file is executed, and then the Autorun.exe file is executed to perform a predetermined process.
- copy protection is not limited to the case of copying the data on the optical recording disc 1 of the present embodiment to a 4.7 GB DVD-R, but another copy having the same 4.7 GB recording capacity.
- the same protection effect can be achieved when copying to DVD-RW or DVD-RAM, which are recording media.
- the data on the CD is standardized to a predetermined recording capacity.
- the same protection effect can be achieved when copied to other CDs. That is, when the present invention is carried out, even if the recording medium power is CD-ROM, CD-R, and CD-RW, the protection effect can be obtained as in the case of the above-described DVD.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Optical Recording Or Reproduction (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006535223A JPWO2006030897A1 (ja) | 2004-09-16 | 2005-09-16 | 光記録ディスク |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-270590 | 2004-09-16 | ||
JP2004270590 | 2004-09-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006030897A1 true WO2006030897A1 (ja) | 2006-03-23 |
Family
ID=36060144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/017152 WO2006030897A1 (ja) | 2004-09-16 | 2005-09-16 | 光記録ディスク |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPWO2006030897A1 (ja) |
WO (1) | WO2006030897A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1166707A (ja) * | 1997-08-20 | 1999-03-09 | Sanyo Electric Co Ltd | 光ディスク、及び光ディスク再生装置 |
JP2001236655A (ja) * | 2000-02-17 | 2001-08-31 | Ddn:Kk | 記録媒体及びその認証方法 |
JP2002343031A (ja) * | 2001-03-12 | 2002-11-29 | Sanyo Electric Co Ltd | ディスク記録装置およびディスク |
JP2003330561A (ja) * | 2002-05-09 | 2003-11-21 | Hitachi Ltd | ソフトウェア不正コピー防止方法 |
-
2005
- 2005-09-16 WO PCT/JP2005/017152 patent/WO2006030897A1/ja active Application Filing
- 2005-09-16 JP JP2006535223A patent/JPWO2006030897A1/ja not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1166707A (ja) * | 1997-08-20 | 1999-03-09 | Sanyo Electric Co Ltd | 光ディスク、及び光ディスク再生装置 |
JP2001236655A (ja) * | 2000-02-17 | 2001-08-31 | Ddn:Kk | 記録媒体及びその認証方法 |
JP2002343031A (ja) * | 2001-03-12 | 2002-11-29 | Sanyo Electric Co Ltd | ディスク記録装置およびディスク |
JP2003330561A (ja) * | 2002-05-09 | 2003-11-21 | Hitachi Ltd | ソフトウェア不正コピー防止方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2006030897A1 (ja) | 2008-05-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7239601B2 (en) | Optical recording medium, method of manufacturing optical recording medium, apparatus for manufacturing optical recording medium, program, and medium | |
TWI280575B (en) | High-density optical disc and recording/reproducing method thereof | |
US8147729B2 (en) | Techniques for forming burst cutting area mark | |
CN1329890C (zh) | 在光学信息存储介质上记录数据的方法 | |
TWI282549B (en) | Data media, manufacturing method thereof, playing control method and drive device | |
JP4280288B2 (ja) | 再生専用型光ディスク媒体及びその製造方法 | |
JPH11283358A (ja) | 書換可能な光ディスク及びその光ディスクにデータを記録する装置 | |
WO2006030897A1 (ja) | 光記録ディスク | |
JP2003217169A (ja) | 複合型光ディスク | |
JPS62173630A (ja) | 光デイスク | |
US7539096B2 (en) | Disc playback apparatus and method | |
EP1776693A1 (en) | Method of allocating areas in optical disc, data recording and/or reproducing apparatus adopting the same, and optical disc therefor | |
WO2006041110A1 (ja) | コピーワンスコンテンツの移動方法および移動装置 | |
JP4145853B2 (ja) | 記録媒体がオリジナル媒体か複製媒体かを判定する方法、プログラム、コンピュータ読み取り可能な記録媒体 | |
JP2866433B2 (ja) | 光情報記憶方法、および光情報記憶担体 | |
JP2004192723A (ja) | 光情報記録媒体 | |
JP2000339691A (ja) | 光ディスク記録媒体 | |
JPH11176026A (ja) | 光情報媒体 | |
US20070212032A1 (en) | Optical disc, access apparatus and access method | |
JP2006236450A (ja) | 光ディスク装置 | |
JP2003242649A (ja) | 光記録媒体記録装置、光記録媒体記録方法及び光記録媒体 | |
KR20050019650A (ko) | 소형 광 디스크 | |
JP2007157297A (ja) | 記録型光ディスク装置および光ディスク媒体 | |
JP2005093039A (ja) | 光記録媒体 | |
JPWO2006085579A1 (ja) | 光記録ディスク |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 2006535223 Country of ref document: JP |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |