JPH05266576A - Method for preventing copy of optical disk and device therefor - Google Patents
Method for preventing copy of optical disk and device thereforInfo
- Publication number
- JPH05266576A JPH05266576A JP4062609A JP6260992A JPH05266576A JP H05266576 A JPH05266576 A JP H05266576A JP 4062609 A JP4062609 A JP 4062609A JP 6260992 A JP6260992 A JP 6260992A JP H05266576 A JPH05266576 A JP H05266576A
- Authority
- JP
- Japan
- Prior art keywords
- defective sector
- optical disk
- address
- area
- sector
- 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.)
- Granted
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
- G11B20/0092—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors
- G11B20/00927—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors wherein said defects or errors are generated on purpose, e.g. intended scratches
- G11B20/00949—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors wherein said defects or errors are generated on purpose, e.g. intended scratches said intentional errors occurring due to bad sectors, which are either physically destroyed or which are declared defective in the defect management information
-
- 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
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0092—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors
- G11B20/00927—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors wherein said defects or errors are generated on purpose, e.g. intended scratches
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Storage Device Security (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は光ディスクに関し、特
に光ディスクの不正防止方法及びその方法が適用された
光ディスク装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc, and more particularly to a method for preventing fraud of an optical disc and an optical disc device to which the method is applied.
【０００２】[0002]
【従来技術】光ディスクは、大容量のデータを記憶で
き、ランダムアクセスが容易であることから、広く普及
していくことが予想される。2. Description of the Related Art Optical disks are expected to be widely used because they can store a large amount of data and are easily random-accessed.
【０００３】このように、光ディスクが広く普及する
と、光ディスクに記憶されていたデータやプログラムが
他の記憶媒体に不正コピーされる可能性がある。従っ
て、データやプログラムに対する著作権を保護しなが
ら、光ディスクを広く普及させていくためには、上記不
正コピーを防止するための何らかの対策を立てておく必
要がある。As described above, when optical discs are widely spread, there is a possibility that data and programs stored in the optical discs may be illegally copied to other storage media. Therefore, in order to widely spread the optical disc while protecting the copyright of the data and the program, it is necessary to take some measures to prevent the illegal copy.
【０００４】図６は光ディスク装置の概念図である。ド
ライブ２０の装填口に光ディスク１が装填されるように
なっており、該ドライブ２０とホストＣＰＵ３０とがＳ
ＣＳＩ(Small Computer Systems Interface)４０を介し
て接続される。FIG. 6 is a conceptual diagram of an optical disk device. The optical disk 1 is loaded in the loading slot of the drive 20, and the drive 20 and the host CPU 30 are S
It is connected via a CSI (Small Computer Systems Interface) 40.
【０００５】図７は国際標準規格（ＩＳＯ規格）に基づ
く光ディスク１の構成を示すものである。第３トラック
から９９９６トラック迄がユーザが通常の方法（以下通
常モードという）でアクセスできるアクセス可領域Ａ
である。このアクセス可領域Ａは全領域がＲＡＭ部１２
である場合、あるいは全領域がＲＯＭ部１１である場
合、更に、外周部（内周部）の一部をＲＯＭ部１１とな
し、他の部分をＲＡＭ部１２となした、いわゆるパーシ
ャルＲＯＭである場合がある。FIG. 7 shows the structure of an optical disc 1 based on the international standard (ISO standard). The accessible area A from the third track to the 9996th track, which can be accessed by the user in a normal method (hereinafter, referred to as a normal mode)
Is. The accessible area A is entirely in the RAM 12
Or if the entire area is the ROM section 11, it is a so-called partial ROM in which a part of the outer peripheral part (inner peripheral part) is the ROM part 11 and the other part is the RAM part 12. There are cases.
【０００６】アクセス可領域Ａの内外周の３トラック
は、当該ディスクの製造番号、ＲＯＭ領域のアドレス範
囲、ＲＡＭ領域のアドレス範囲等、ディスク管理に必要
なデータが記入されているＤＭＡ(Disk Management Are
a)領域Ｂであって、ユーザは上記通常モードではアク
セスすることはできないが、ＩＳＯ規格で決められた特
殊なコマンドを用いる全領域アクセス可能モード（以下
全領域モードという）によってアクセスすることがで
きる。Three tracks on the inner and outer circumferences of the accessible area A are DMA (Disk Management Are) in which data necessary for disk management such as the serial number of the disk, the address range of the ROM area, the address range of the RAM area, etc. are written.
a) Area B, which cannot be accessed by the user in the normal mode, but can be accessed by the all area accessible mode (hereinafter referred to as all area mode) using a special command determined by the ISO standard. ..
【０００７】上記ＤＭＡ領域Ｂの内（外）周にはコント
ロールゾーンＣが設けられ、更に、その内周部（外周
部）には余白部Ｄが設けられている。このインナ（アウ
タ）コントロールゾーンＣ及び余白部Ｄも上記全領域モ
ードでユーザがアクセスすることができるようになっ
ている。尚、上記全領域モードでしかアクセスできな
い上記領域Ｂ、Ｃ、Ｄを以下アクセス不可領域Ｗとい
う。A control zone C is provided on the inner (outer) circumference of the DMA area B, and a margin portion D is further provided on the inner circumference (outer circumference) thereof. The inner (outer) control zone C and the blank area D can also be accessed by the user in the all area mode. The areas B, C and D that can be accessed only in the all area mode are hereinafter referred to as an inaccessible area W.
【０００８】上記、上記ＤＭＡ領域Ｂの内には更にＰＤ
Ｌ領域Ｂｐと称される領域が設けられ、光ディスク製造
時に物理フォーマッティングするときに、欠陥セクタＳ
0 のアドレスが登録され、該欠陥セクタＳ0 の以後の使
用を禁止するようにしている。In the DMA area B, PD is further added.
An area called an L area Bp is provided, and the defective sector S
An address of 0 is registered, and the subsequent use of the defective sector S 0 is prohibited.
【０００９】上記Ｒ０Ｍ部１１あるいはＲＡＭ部１２に
書き込まれたデータはホストＣＰＵ３０に組み込まれた
アプリケーションプログラムによって利用できるように
なっており、該アプリケーションプログラムは上記光デ
ィスク１のＲＯＭ部１１やＲＡＭ部１２に書き込まれて
光ディスク１をドライブ２０に装着したときに、ホスト
ＣＰＵ３０に落とし込む場合もあり、あるいは他の方法
でホストＣＰＵ３０に組み込まれることもある。The data written in the R0M section 11 or the RAM section 12 can be used by an application program incorporated in the host CPU 30, and the application program is stored in the ROM section 11 or the RAM section 12 of the optical disc 1. When the optical disc 1 is written and mounted on the drive 20, it may be dropped into the host CPU 30 or may be incorporated into the host CPU 30 by another method.
【００１０】このような構成にかかる光ディスク装置で
使用される光ディスクには辞書、百科辞典、小説、ゲー
ムソフト等のあらゆる種類の著作物がＲＯＭ形式あるい
はＲＡＭ形式で記録されて販売されることがあり、この
場合、何等かの不正コピー防止対策を施しておく必要が
ある。On the optical disk used in the optical disk device having such a configuration, all kinds of copyrighted works such as dictionaries, encyclopedias, novels and game software may be recorded and sold in ROM format or RAM format. In this case, it is necessary to take some measures against illegal copy.
【００１１】このように媒体に格納されたデータの不正
コピー防止対策として、例えば、特開昭６０−１４５５
０１号公報に記載された方法がある。これによると、あ
る媒体に固有の位置に物理的な手段で標識を書き込んで
おき、記録再生装置で読み取った上記媒体の上記標識を
記録再生装置内に持たせた基準パターンと比較し、不一
致のとき、すなわち、上記標識を持たない媒体、あるい
は標識が異なる媒体をコピー品とするものである。As a measure for preventing the illegal copy of the data stored in the medium as described above, for example, Japanese Patent Laid-Open No. 60-1455.
There is a method described in Japanese Patent No. 01. According to this, a marker is written by a physical means at a position peculiar to a medium, and the marker of the medium read by the recording / reproducing apparatus is compared with a reference pattern provided in the recording / reproducing apparatus. At this time, that is, a medium without the above-mentioned label or a medium with a different label is used as a copy product.
【００１２】また、特開昭６０−１４５５０１号公報に
も光ディスクごとに固有の位置に物理的な加工をした光
ディスクが開示されている。Further, Japanese Patent Laid-Open No. 60-145501 also discloses an optical disk which is physically processed at a unique position for each optical disk.
【００１３】[0013]
【発明が解決しようとする課題】光ディスクにコピー禁
止のためのソフト的、ハード的な対策ができないと、必
ず不正コピーがなされるおそれがあり、このことが光デ
ィスクの普及を阻害する可能性さえある。特に、３．５
インチの光ディスクでは、追記や消去、書き換え記録可
能な光ディスクの他に、所望のデータやプログラムをＲ
ＯＭ部１１に記録した再生専用、あるいは部分的に再生
専用となっているパーシャルＲＯＭタイプの光ディスク
を製品化していくことが検討されている。If a software- or hardware-based measure for prohibiting copying on an optical disk cannot be taken, there is a possibility that an illegal copy will be made, which may hinder the spread of the optical disk. .. Especially 3.5
For inch optical discs, in addition to the recordable, erasable and rewritable optical discs, desired data and programs
It is under study to commercialize a read-only or partially read-only partial ROM type optical disc recorded in the OM unit 11.
【００１４】ところが、光ディスクにコピー禁止対策が
なされていないと、上記ＲＯＭ部１１やＲＡＭ部１２に
記録した所望のデータやプログラムの内容が不正コピー
され、著作権が侵害される可能性がある。However, if the optical disc is not protected against copying, the desired data or program contents recorded in the ROM section 11 or the RAM section 12 may be illegally copied and the copyright may be infringed.
【００１５】光ディスクにコピー禁止のためのソフト
的、ハード的な対策が施されると、これらの問題が解決
するが、そのため、現在進められようとしている国際標
準規格（ＩＳＯ規格）より外れたフォーマットを持たせ
ることはできない。These problems will be solved if the optical disc is provided with software and hardware measures for prohibiting copying, but for this reason, a format deviating from the international standard (ISO standard) which is currently being advanced. Can not have.
【００１６】また、上記特開昭６０−１７５２５４号公
報及び６０−１７５２５４号公報に記載の方法では、媒
体の物理的な標識を形成するところから上記ＩＳＯ規格
に適合しないことになり、不都合でありまた、標識を認
識するために直接上記標識から得られる信号を利用する
ようにしており、ゴミ等の付着によって誤動作を起こす
おそれがあり、信頼性に欠ける欠点がある。Further, the methods described in JP-A-60-175254 and JP-A-60-175254 are inconvenient because they do not conform to the ISO standard because they form physical marks on the medium. In addition, the signal obtained from the sign is directly used for recognizing the sign, and there is a possibility that malfunction may occur due to adhesion of dust and the like, and there is a drawback of lacking reliability.
【００１７】この発明は上記従来の事情に鑑みて提案さ
れたものであって、ＩＳＯ規格に適合し、しかも、欠陥
セクタ（標識）を直接読み取るのではなく、該欠陥セク
タのアドレスのテーブルを読み取るようにして真正品か
コピー品かを判別するようにして、信頼性の高い光ディ
スクの不正コピー防止方法を及び光ディスク装置を提供
することを目的とするものである。The present invention has been proposed in view of the above conventional circumstances, conforms to the ISO standard, and does not directly read a defective sector (marker), but reads a table of addresses of the defective sector. An object of the present invention is to provide a highly reliable method for preventing illegal copying of an optical disc and an optical disc device by discriminating between a genuine product and a copied product.
【００１８】[0018]
【課題を解決するための手段】この発明は上記目的を達
成するために以下の手段を採用している。すなわち、光
ディスク１に欠陥セクタＳ0 があったとき、ユーザが通
常の方法でアクセスできないアクセス不可領域Ｗに、該
セクタのアドレスを登録して該欠陥セクタＳ 1 の使用を
禁止する光ディスクにおいて、光ディスク１の特定セク
タを意図的に不良とした疑似欠陥セクタＳ1 となし、該
疑似欠陥セクタＳ1 がない場合を不正コピーされた光デ
ィスクとみなすようにするものである。The present invention has achieved the above objects.
The following measures are used to achieve this. I.e. light
Defective sector S on disk 10When there is a
In the inaccessible area W that cannot be accessed by the usual method,
The sector address is registered and the defective sector S 1The use of
In the prohibited optical disc, the specific section of the optical disc 1
Pseudo-defective sector S that intentionally made the data defective1And said
Pseudo defective sector S1If there is no illegally copied optical data
It should be regarded as a disk.
【００１９】この方法を実現する光ディスク装置は、図
１に示すように、ドライブに装着された光ディスクの疑
似欠陥セクタＳ1 の真正のアドレスを登録したアドレス
登録部１２０と、ドライブに装着された光ディスクの欠
陥セクタＳ0 と疑似欠陥セクタＳ1 のアドレスが登録さ
れているＰＤＬ領域Ｂｐをアクセスして、意図的に不良
とされた疑似欠陥セクタＳ1 のアドレスを読み取る欠陥
セクタ読み取り手段１１０と、上記欠陥セクタ読み取り
手段１１０によって読み取られた疑似欠陥セクタＳ1 の
アドレスと、アドレス登録部１２０に登録された疑似欠
陥セクタＳ1 の真正のアドレスを比較し、一致しないと
きに不正コピー品である旨の信号を出力する比較手段３
００とを備える構成としている。As shown in FIG. 1, an optical disc apparatus for realizing this method is provided with an address registration section 120 for registering the true address of the pseudo defective sector S 1 of the optical disc mounted in the drive, and an optical disc mounted in the drive. Defective sector reading means 110 for reading the address of the pseudo defective sector S 1 intentionally made defective by accessing the PDL area Bp in which the addresses of the defective sector S 0 and the pseudo defective sector S 1 are registered. The address of the pseudo defective sector S 1 read by the defective sector reading unit 110 is compared with the genuine address of the pseudo defective sector S 1 registered in the address registration unit 120, and when they do not match, it means that the product is an illegal copy product. Comparison means 3 for outputting a signal
And 00.
【００２０】上記欠陥セクタ読み取り手段１１０は、図
４に示すようにユーザが通常の方法でアクセスできるア
クセス可領域Ａをアクセスするための通常モードと、
上記アクセス不可領域Ｗをもアクセスするための全領域
モードとを切り換えるモード切り換え手段１１１と、
上記全領域モードによって上記ＰＤＬ領域Ｂｐを読み
取るＰＤＬ領域読み出し手段１１２とより構成される。The defective sector reading means 110, as shown in FIG. 4, has a normal mode for accessing the accessible area A which can be accessed by the user in a normal manner,
A mode switching means 111 for switching between the whole area mode for accessing the inaccessible area W and
The PDL area reading unit 112 reads the PDL area Bp in the all area mode.
【００２１】また、疑似欠陥セクタＳ1 のアドレス登録
領域として、上記ＰＤＬ領域以外のユーザが通常の方法
でアクセスできない領域を利用することもできる。Further, as the address registration area of the pseudo defective sector S 1, an area other than the PDL area which cannot be accessed by a user by a normal method can be used.
【００２２】[0022]
【作用】光ディスクに少なくとも１つ持たせた疑似欠陥
セクタＳ1 のアドレスをその光ディスクで固有のアドレ
スとしておくと、それを読み取るシステム側の上記アド
レス登録部１２０もそれに対応して上記と同じ固有のア
ドレスを記憶しておく必要がある。そして、上記比較手
段３００の比較で、欠陥セクタ読み取り手段１１０で読
み取られたアドレスと上記真正のアドレスとが一致した
ときにのみ、真正の光ディスクとされるものである。と
ころが、光ディスクがコピー品であると、コピー元に光
ディスクの上記アクセス不可領域Ｗ（例えばＤＭＡ領域
内のＰＤＬ領域）に書き込まれている疑似欠陥セクタＳ
1 のアドレスまでコピー先の光ディスクにコピーできな
いので、読み出し時に両アドレスを比較することができ
なくなり、コピー品であることが判る。When the address of the pseudo defective sector S 1 provided on the optical disk is set as a unique address on the optical disk, the address registration unit 120 on the system side for reading the address correspondingly has the same unique address as above. You need to remember the address. Then, only when the address read by the defective sector reading unit 110 and the genuine address match with each other by the comparison by the comparing unit 300, the disc is regarded as a genuine optical disc. However, when the optical disc is a copy product, the pseudo defective sector S written in the inaccessible region W (for example, the PDL region in the DMA region) of the optical disc at the copy source.
Since it is not possible to copy up to address 1 to the copy destination optical disk, it is not possible to compare both addresses when reading, and it can be seen that this is a copy product.
【００２３】上記疑似欠陥セクタＳ1 を複数のセクタの
組合せとすると、更にコピーが容易でなくなる。If the pseudo defective sector S 1 is a combination of a plurality of sectors, copying becomes even more difficult.
【００２４】[0024]
【実施例】図２は本発明の光ディスクを製造する装置の
実施例ブロック図であり、図３はそのフロー図である。2 is a block diagram of an embodiment of an apparatus for manufacturing an optical disk according to the present invention, and FIG. 3 is a flow chart thereof.
【００２５】ホストＣＰＵ３０には従来と同様物理フォ
ーマッティング手段２４０が備えられ、ＲＡＭ部のデー
タ領域の大きさを決定したり、あるいは欠陥セクタＳ0
が検出されてＤＭＡ領域(Disk Management Area)のＰＤ
Ｌ(Primary Difect List) 領域Ｂｐにそのアドレスが書
き込まれる（図３、Ｆ３１）。The host CPU 30 is provided with the physical formatting means 240 as in the conventional case, and determines the size of the data area of the RAM portion or the defective sector S 0.
Is detected and PD in the DMA area (Disk Management Area)
The address is written in the L (Primary Difect List) area Bp (FIG. 3, F31).
【００２６】次いで、欠陥セクタ分布決定手段２１０が
上記物理フォーマッティングによって欠陥セクタＳ0 と
されたセクタ以外のセクタから、例えば乱数を用いて少
なくとも１つ、好ましくは２つ以上の、以後の作業で意
図的に不良にしようとするセクタのアドレスを決定する
（図３、Ｆ３２）。Next, the defective sector distribution determining means 210 selects at least one, preferably two or more, from a sector other than the sector determined as the defective sector S 0 by the physical formatting, for example, in the subsequent work. The address of the sector to be made defective is determined (F32 in FIG. 3).
【００２７】一方、上記のようにして意図的に不良にし
ようとするセクタのアドレスを該光ディスクを利用する
アプリケーションプログラムのアドレス登録部１２０に
登録しておく（図３、Ｆ３３）。尚、上記したように、
このアプリケーションプログラムはこれから製造しよう
とする光ディスクに書き込まれる場合もあり、また別の
媒体に書き込まれている場合もある。On the other hand, the address of the sector to be intentionally made defective as described above is registered in the address registration unit 120 of the application program using the optical disk (FIG. 3, F33). As mentioned above,
This application program may be written on the optical disc to be manufactured or may be written on another medium.
【００２８】次いで、結晶化書き込み手段２２０を作動
させて上記のようにして抽出したセクタを結晶化して疑
似欠陥セクタＳ0 を形成する。すなわち、まず回転数切
替え手段２２１によって通常の回転数３０００ｒｐｍか
ら３００ｒｐｍに切り変えるとともに、パワー切替え手
段２２２によって通常のパワー９ｍＷから１５ｍＷに切
り変える。そして、書き込み部２２３で上記のように抽
出したセクタに上記のように設定した３００ｒｐｍ、１
５ｍＷでレーザビームを照射し、該セクタを意図的に破
壊（結晶化）して疑似欠陥セクタＳ1 とする（図３、Ｆ
３４→Ｆ３５）。その後、再度フォーマッティングする
ことによって、上記ＰＤＬ領域Ｂｐに疑似欠陥セクタＳ
1 のアドレスが記録されたことになる。Then, the crystallization writing means 220 is operated to crystallize the sectors extracted as described above to form the pseudo defect sectors S 0 . That is, first, the rotation speed switching unit 221 switches the normal rotation speed from 3000 rpm to 300 rpm, and the power switching unit 222 switches the normal power from 9 mW to 15 mW. Then, the writing unit 223 sets the sector extracted as described above to 300 rpm, which is set as described above,
The sector is intentionally destroyed (crystallized) by irradiating with a laser beam at 5 mW to form a pseudo defect sector S 1 (FIG. 3, F).
34 → F35). After that, by performing the formatting again, the pseudo defect sector S is added to the PDL area Bp.
The address of 1 is recorded.
【００２９】図４はこのようにして製造された光ディス
クを再生する読み取りシステムの機能ブロック図を示
し、図５はそのフロー図である。まず、欠陥セクタ読み
取り手段１１０が作動して、疑似欠陥セクタＳ1 の分布
を読み出す。すなわち、欠陥セクタ読み取り手段１１０
を構成するモード切り換え部１１１は上記ＰＤＬ領域Ｂ
ｐでもアクセスできる全領域アクセスモードにドライ
ブ２０のアクセスモードを切り換えるように指示をし、
次いでＰＤＬ読み取り部１１２が作動して、ＰＤＬ領域
Ｂｐに書き込まれている疑似欠陥セクタＳ 1 のアドレス
を読み取る（図５、Ｆ５１→Ｆ５２）。これによって疑
似欠陥セクタ分布を得ると、プログラムのアドレス登録
部１２０が持っている疑似欠陥セクタＳ1 の真正のアド
レスと上記のように光ディスクから読み出した疑似欠陥
セクタＳ1 とをアドレス比較手段１３０で比較する（図
５、Ｆ５３→Ｆ５４）。このとき、両者が一致すると処
理が続行され、一致しないと処理中止される。FIG. 4 shows the optical disk manufactured in this way.
Function block diagram of the reading system
However, FIG. 5 is a flowchart thereof. First, read the defective sector
The removal means 110 is activated to activate the pseudo defective sector S.1Distribution of
Read out. That is, the defective sector reading means 110
The mode switching unit 111 constituting the
Dry to all area access mode that can be accessed by p
Command to switch the access mode of
Then, the PDL reading unit 112 is activated to operate the PDL area.
Pseudo-defective sector S written in Bp 1Address of
Is read (FIG. 5, F51 → F52). Doubt by this
If you get similar defective sector distribution, program address registration
Pseudo-defective sector S held by section 1201Authentic Ad
And false defects read from the optical disc as described above
Sector S1And are compared by the address comparison means 130 (Fig.
5, F53 → F54). At this time, if the two match
Processing continues, and if they do not match, processing is aborted.
【００３０】ところが、ある光ディスク１ａから他の光
ディスク１ｂに通常のコピーコマンドしか持たないシス
テムでコピーすると、コピー元の光ディスク１ａのＰＤ
Ｌ領域Ｂｐに書き込まれている欠陥セクタＳ0 及び疑似
欠陥セクタＳ1 のアドレスはコピー先の光ディスク１ｂ
にはコピーできない。従って、ドライブ２０に装着され
た光ディスク１が、真正の光ディスク１ａから不正にコ
ピーされた光ディスク１ｂである場合には上記ＰＤＬ領
域Ｂｐから、疑似欠陥セクタのアドレスを得ることがで
きないことになり、処理が中断されることになる。However, when copying from one optical disk 1a to another optical disk 1b by a system having only a normal copy command, the PD of the original optical disk 1a is copied.
The addresses of the defective sector S 0 and the pseudo defective sector S 1 written in the L area Bp are the optical disk 1b of the copy destination.
Cannot be copied to. Therefore, when the optical disc 1 mounted in the drive 20 is the optical disc 1b illegally copied from the genuine optical disc 1a, the address of the pseudo defective sector cannot be obtained from the PDL area Bp. Will be interrupted.
【００３１】上記例は疑似欠陥セクタＳ1 がＲＡＭ部１
２に形成される場合を示しているが、この方法は疑似欠
陥セクタＳ1 をＲＯＭ部１１に形成することを制限する
ものではない。すわなち、スタンパでＲＯＭ部１１を形
成するときには、任意に抽出した少なくとも１つのセク
タに無意味な凹凸を形成するようにする。但し、スタン
パの凹凸位置（アドレス）を光ディスク毎に変更するこ
とは不可能であるので、この場合には一種類の著作物を
刻設した全光ディスクの疑似欠陥セクタＳ1 のアドレス
分布は同じになる。In the above example, the pseudo defective sector S 1 is the RAM section 1
However, this method does not limit the formation of the pseudo defective sector S 1 in the ROM section 11. That is, when forming the ROM portion 11 with the stamper, meaningless unevenness is formed in at least one sector arbitrarily extracted. However, since it is impossible to change the concave-convex position (address) of the stamper for each optical disk, in this case, the address distribution of the pseudo defect sectors S 1 of all optical disks engraved with one kind of copyrighted material is the same. Become.
【００３２】更に、上記疑似欠陥セクタＳ1 の数は１つ
であるよりも複数設ける方が更に不正コピーがし難くな
りこの発明の目的を有効に達成することができる。Further, if the number of the above-mentioned pseudo defective sectors S 1 is one, it is more difficult to make an illegal copy, and the object of the present invention can be effectively achieved.
【００３３】[0033]
【発明の効果】以上説明したようにこの発明は疑似欠陥
セクタを形成し、その欠陥セクタのアドレスをユーザが
通常の方法でアクセスすることができない領域に記録
し、光ディスク再生時には、ユーザが通常の方法でアク
セスできない領域にもアクセスできる全領域モードでア
クセスして上記アドレスを読み出して、該光ディスクを
利用するアプリケーションプログラムに持っている真正
のアドレスとを比較するようにしている。従って、不正
コピーがなされた光ディスクは上記ユーザが通常の方法
でアクセスできない領域に記録されたアドレスをコピー
することができないので、比較の対象を持たないことに
なり不正コピーであることがわかることになる。従っ
て、この方法によると現在進められているＩＳＯ規格に
外れることなくしかも信頼性の高いコピー防止ができ
る。As described above, according to the present invention, a pseudo defective sector is formed, and the address of the defective sector is recorded in an area which cannot be accessed by the user by a normal method. An area that cannot be accessed by the method is also accessed in the full area mode to read the address and compare it with the true address held in the application program that uses the optical disk. Therefore, since the illegally copied optical disk cannot copy the address recorded in the area that cannot be accessed by the above-mentioned user in the usual way, it has no object of comparison and it can be seen that it is an illegal copy. Become. Therefore, according to this method, it is possible to perform highly reliable copy prevention without deviating from the ISO standard currently in progress.
【図１】本発明の原理図である。FIG. 1 is a principle diagram of the present invention.
【図２】本発明の光ディスクを製造するシステムの実施
例ブロック図である。FIG. 2 is a block diagram of an embodiment of a system for manufacturing an optical disc of the present invention.
【図３】図２のシステムのフロー図である。FIG. 3 is a flow diagram of the system of FIG.
【図４】本発明の光ディスクを再生するシステムの実施
例ブロック図である。FIG. 4 is a block diagram of an embodiment of a system for reproducing an optical disc of the present invention.
【図５】図４のシステムのフロー図である。5 is a flow diagram of the system of FIG.
【図６】従来例概念図である。FIG. 6 is a conceptual diagram of a conventional example.
【図７】光ディスクの各フィールドの割り付け構造であ
る。FIG. 7 is an allocation structure of each field of the optical disc.
１ 光ディスク ２０ ドライブ １１０ 欠陥セクタ読み取り手段 １２０ アドレス登録部 １２０ アドレス登録部 ３００ 比較手段 Ｓ0 欠陥セクタ Ｓ1 疑似欠陥セクタ Ｂｐ ＰＤＬ領域 Ａ アクセス可領域 Ｗ アクセス不可領域1 optical disk 20 drive 110 defective sector reading means 120 address registration section 120 address registration section 300 comparison means S 0 defective sector S 1 pseudo defective sector Bp PDL area A accessible area W inaccessible area
Claims (6)
たとき、ユーザが通常の方法でアクセスできないアクセ
ス不可領域(W) に、該セクタのアドレスを登録して該欠
陥セクタ(S0)の使用を禁止する光ディスクにおいて、 光ディスク(1) の特定セクタを意図的に不良とした疑似
欠陥セクタ(S1)となし、該疑似欠陥セクタ(S1)がない場
合を不正コピーされた光ディスクとみなす光ディスクの
コピー防止方法。1. When the optical disk (1) has a defective sector (S 0 ), the address of the sector is registered in an inaccessible area (W) that cannot be accessed by a user in a normal manner, and the defective sector (S 0 ) is registered. in the optical disk to prohibit the use of 0), optical disc (1) intentionally poor and the pseudo defective sector specific sector of (S 1) ungated,該疑similar defective sector (S 1) is illegally copy if there is no Optical disk copy protection method to be regarded as an optical disk.
ＯＭ部に凹凸のピットで形成された請求項１に記載の光
ディスクのコピー防止方法。2. The pseudo defective sector (S 1 ) is the R of an optical disk.
The copy protection method for an optical disc according to claim 1, wherein the OM portion is formed with uneven pits.
ＡＭ部を結晶化させることによって形成された請求項１
に記載の光ディスクのコピー防止方法。3. The pseudo defective sector (S 1 ) is an R of an optical disk.
2. A crystallized AM part.
A method for preventing copy of an optical disc according to.
たとき、ユーザが通常の方法でアクセスできないアクセ
ス不可領域(W) に、該セクタのアドレスを登録して該欠
陥セクタ(S0)の使用を禁止する光ディスクにおいて、 ドライブ(20)に装着された光ディスクの真正の疑似欠陥
セクタ(S1)のアドレスを登録したアドレス登録部(120)
と、 ドライブ(20)に装着された光ディスクの欠陥セクタ(S0)
と意図的に不良とされた疑似欠陥セクタ(S1)のアドレス
とが登録されているＰＤＬ(Primary Difect List) 領域
(Bp)をアクセスして、上記疑似欠陥セクタ(S1)のアドレ
スを読み取る欠陥セクタ読み取り手段(110) と、 上記欠陥セクタ読み取り手段(110) によって読み取られ
た疑似欠陥セクタ(S1)のアドレスと、アドレス登録部(1
20) に登録された真正のアドレスを比較し、一致しない
ときに不正コピー品である旨の信号を出力する比較手段
(300) とを備えた光ディスク装置。4. When the optical disk (1) has a defective sector (S 0 ), the address of the sector is registered in an inaccessible area (W) which cannot be accessed by a user in a normal manner, and the defective sector (S 0 Address registration section (120) that registers the address of the genuine pseudo-defective sector (S 1 ) of the optical disk mounted in the drive (20) in the optical disk that prohibits the use of ( 0 )
And the defective sector (S 0 ) of the optical disc loaded in the drive (20).
PDL (Primary Difect List) area in which the address of a pseudo defective sector (S 1 ) that is intentionally made defective is registered
(Bp) by accessing, with the pseudo defective sector defective sector reading means (110) for reading the address of the (S 1), the address of the defective sector pseudo defective sector is read by the reading means (110) (S 1) And the address registration section (1
Comparison means that compares the genuine address registered in (20) and outputs a signal indicating that the product is an illegal copy when they do not match.
An optical disk device having (300).
(A) をアクセスするための通常モードと、上記アクセ
ス不可領域(W) をもアクセスするための全領域モード
とを切り換えるモード切り換え手段(10)と、 上記全領域モードによって上記ＰＤＬ領域(Bp)を読み
取る欠陥セクタアドレス読み出し手段(11)とよりなる請
求項４に記載の光ディスク装置。5. The accessible area accessible by a user in a normal manner by the defective sector reading means (110).
A mode switching means (10) for switching between a normal mode for accessing (A) and a full area mode for accessing the inaccessible area (W), and the PDL area (Bp) depending on the full area mode. 5. The optical disk device according to claim 4, further comprising defective sector address reading means (11) for reading the.
録されている領域が、ＰＤＬ領域(Bp)以外のユーザが通
常の方法でアクセスできない領域である請求項４に記載
の光ディスク装置。6. The optical disk device according to claim 4, wherein the area in which the address of the pseudo defective sector (S 1 ) is registered is an area other than the PDL area (Bp) that cannot be accessed by a user by a normal method.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4062609A JP2575989B2 (en) | 1992-03-18 | 1992-03-18 | Optical disk copy protection method and apparatus |
| US08/032,481 US5418852A (en) | 1992-03-18 | 1993-03-17 | Unauthorized use prevention method for optical disks, optical disk having unauthorized use prevention function, and optical disk apparatus |
| DE4308680A DE4308680B4 (en) | 1992-03-18 | 1993-03-18 | Method and device for preventing unauthorized use of a recording medium |
| US08/730,654 US5982886A (en) | 1992-03-18 | 1996-10-11 | Unauthorized use preventing method for optical disks, optical disk having unauthorized use prevention function, and optical disk apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4062609A JP2575989B2 (en) | 1992-03-18 | 1992-03-18 | Optical disk copy protection method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05266576A true JPH05266576A (en) | 1993-10-15 |
| JP2575989B2 JP2575989B2 (en) | 1997-01-29 |
Family
ID=13205231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4062609A Expired - Lifetime JP2575989B2 (en) | 1992-03-18 | 1992-03-18 | Optical disk copy protection method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2575989B2 (en) |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| US5661703A (en) * | 1995-06-27 | 1997-08-26 | Fujitsu Limited | Optical recording medium having a non-volatile identification code and method for encoding data using same |
| EP0785547A3 (en) * | 1996-01-16 | 1998-08-05 | International Business Machines Corporation | Unique identifier for optical media |
| US5805551A (en) * | 1994-04-18 | 1998-09-08 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for preventing illegal copy or illegal installation of information of optical recording medium |
| US5881038A (en) * | 1994-04-18 | 1999-03-09 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for preventing illegal copy or illegal installation of information of optical recording medium |
| US5886979A (en) * | 1996-10-21 | 1999-03-23 | Fujitsu Limitd | Information recording medium and method for recording and reproducing information to a medium to prevent unauthorized copying |
| US5930215A (en) * | 1993-10-06 | 1999-07-27 | Sony Corporation | CD-Rom with machine-readable I.D. code |
| US6052465A (en) * | 1995-10-09 | 2000-04-18 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6144742A (en) * | 1996-05-16 | 2000-11-07 | Mitsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| WO2001056023A1 (en) * | 2000-01-27 | 2001-08-02 | Cd Cash Co., Ltd. | Optical recording medium for preventing illegal duplication, and a method for manufacturing and reproducing the same, and an authentication method using the same |
| WO2003046910A1 (en) * | 2001-11-27 | 2003-06-05 | Ed-Contrive Inc. | Unauthorized copy recording medium use preventing method, and information recording medium to which the method is appied |
| KR100419432B1 (en) * | 2000-08-19 | 2004-02-19 | 쎄텍 주식회사 | Copy Protected Optical Disc Manufacturing Method and Copy Protected Optical Disc |
| WO2005024821A1 (en) * | 2003-08-29 | 2005-03-17 | General Electric Company | Method for facilitating copyright protection in digital media and digital media made thereby |
| GB2411282A (en) * | 2004-02-19 | 2005-08-24 | Macrovision Corp | Optical Disc Copy Protection |
| USRE39297E1 (en) * | 1994-11-17 | 2006-09-19 | Matsushita Electric Industrial Co., Ltd. | Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk |
| KR100595497B1 (en) * | 1998-08-27 | 2006-10-24 | 엘지전자 주식회사 | Digital Information Storage Media and Its Prevention Methods |
| CN1316490C (en) * | 1995-10-09 | 2007-05-16 | 松下电器产业株式会社 | Content reproduction apparatus and method |
| KR100775148B1 (en) * | 2000-03-30 | 2007-11-12 | 엘지전자 주식회사 | Optical disk with copy protection and method for controlling the playback of the same |
| KR100775149B1 (en) * | 2005-03-30 | 2007-11-12 | 엘지전자 주식회사 | recording media for replay and data replaying method thereof |
| US7366071B2 (en) | 2003-02-10 | 2008-04-29 | Sony Corporation | Data recording method and device, data recording medium, data reproduction method and device |
| US7721338B2 (en) | 2004-02-19 | 2010-05-18 | Macrovision Corporation | Defeat of the copy protection of optical discs |
| USRE42398E1 (en) | 1998-10-05 | 2011-05-24 | Kabushiki Kaisha Toshiba | Memory system |
| JP2012533805A (en) * | 2009-07-17 | 2012-12-27 | セキュアー コンテント ストレージ アソシエイション， リミテッド ライアビリティ カンパニー | A simple non-autonomous peering media replication detector |
| US9136010B2 (en) | 2010-04-12 | 2015-09-15 | Samsung Electronics Co., Ltd | Method for generating physical identifier in storage device and machine-readable storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62276648A (en) * | 1986-05-26 | 1987-12-01 | Toshiba Corp | Copy prevention system for floppy disk |
| JPH01319140A (en) * | 1988-06-21 | 1989-12-25 | Matsushita Electric Ind Co Ltd | Optical disk recording and reproducing method |
| JPH0244448A (en) * | 1988-08-05 | 1990-02-14 | Nec Corp | Floppy disk |
| JPH0467320A (en) * | 1990-07-02 | 1992-03-03 | Hitachi Ltd | Information recording disk |
-
1992
- 1992-03-18 JP JP4062609A patent/JP2575989B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62276648A (en) * | 1986-05-26 | 1987-12-01 | Toshiba Corp | Copy prevention system for floppy disk |
| JPH01319140A (en) * | 1988-06-21 | 1989-12-25 | Matsushita Electric Ind Co Ltd | Optical disk recording and reproducing method |
| JPH0244448A (en) * | 1988-08-05 | 1990-02-14 | Nec Corp | Floppy disk |
| JPH0467320A (en) * | 1990-07-02 | 1992-03-03 | Hitachi Ltd | Information recording disk |
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| WO1995028704A1 (en) * | 1994-04-18 | 1995-10-26 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for preventing illegal copying and illegal installation of information on optical recording medium |
| US5881038A (en) * | 1994-04-18 | 1999-03-09 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for preventing illegal copy or illegal installation of information of optical recording medium |
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| USRE40969E1 (en) | 1994-11-17 | 2009-11-10 | Panasonic Corporation | Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk |
| USRE40687E1 (en) * | 1994-11-17 | 2009-03-31 | Panasonic Corporation | Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk |
| USRE39653E1 (en) | 1994-11-17 | 2007-05-22 | Matsushita Electric Industrial Co., Ltd. | Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk |
| USRE39297E1 (en) * | 1994-11-17 | 2006-09-19 | Matsushita Electric Industrial Co., Ltd. | Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk |
| KR100465551B1 (en) * | 1994-11-17 | 2005-04-19 | 마츠시타 덴끼 산교 가부시키가이샤 | Marking generating device, laser marking method for optical disc, playback device, optical disc and optical disc manufacturing method |
| KR100434636B1 (en) * | 1994-11-17 | 2004-06-07 | 마츠시타 덴끼 산교 가부시키가이샤 | Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk |
| US5812501A (en) * | 1995-06-27 | 1998-09-22 | Fujitsu Limited | Optical recording medium having a non-volatile identification code and method for encoding data using same |
| US5661703A (en) * | 1995-06-27 | 1997-08-26 | Fujitsu Limited | Optical recording medium having a non-volatile identification code and method for encoding data using same |
| US6618347B1 (en) | 1995-10-09 | 2003-09-09 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US7103781B2 (en) | 1995-10-09 | 2006-09-05 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6208736B1 (en) | 1995-10-09 | 2001-03-27 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6229896B1 (en) | 1995-10-09 | 2001-05-08 | Matsushita Electric Industrial, Co., Ltd. | Optical disk, an optical barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US8472291B2 (en) | 1995-10-09 | 2013-06-25 | Panasonic Corporation | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6278671B1 (en) | 1995-10-09 | 2001-08-21 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6285764B1 (en) | 1995-10-09 | 2001-09-04 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6285763B1 (en) | 1995-10-09 | 2001-09-04 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6285762B1 (en) | 1995-10-09 | 2001-09-04 | Matsushita Electric Industrial Co., Ltd. | Optical disk, optical disk barcode forming method, optical disk reproduction apparatus, marking forming apparatus, method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6298138B1 (en) | 1995-10-09 | 2001-10-02 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6449366B1 (en) | 1995-10-09 | 2002-09-10 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6457128B1 (en) | 1995-10-09 | 2002-09-24 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6470452B1 (en) | 1995-10-09 | 2002-10-22 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6480960B1 (en) | 1995-10-09 | 2002-11-12 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6552969B1 (en) | 1995-10-09 | 2003-04-22 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US8014236B2 (en) | 1995-10-09 | 2011-09-06 | Panasonic Corporation | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6600706B1 (en) | 1995-10-09 | 2003-07-29 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6160888A (en) * | 1995-10-09 | 2000-12-12 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6052465A (en) * | 1995-10-09 | 2000-04-18 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6728882B2 (en) | 1995-10-09 | 2004-04-27 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6122373A (en) * | 1995-10-09 | 2000-09-19 | Matsushita Electric Industrial Co., Ltd. | Optical disk, optical disk barcode forming method, optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6757391B2 (en) | 1995-10-09 | 2004-06-29 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on a optical disk, and a method of manufacturing an optical disk |
| US6862685B2 (en) | 1995-10-09 | 2005-03-01 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US7520001B2 (en) | 1995-10-09 | 2009-04-14 | Panasonic Corporation | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6125181A (en) * | 1995-10-09 | 2000-09-26 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| CN100347985C (en) * | 1995-10-09 | 2007-11-07 | 松下电器产业株式会社 | Content reproduction apparatus and method |
| CN1324592C (en) * | 1995-10-09 | 2007-07-04 | 松下电器产业株式会社 | Optical disk and method of manufacturing an optical disk |
| US7095697B2 (en) | 1995-10-09 | 2006-08-22 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6175629B1 (en) | 1995-10-09 | 2001-01-16 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6141419A (en) * | 1995-10-09 | 2000-10-31 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US6128388A (en) * | 1995-10-09 | 2000-10-03 | Matsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| CN1316490C (en) * | 1995-10-09 | 2007-05-16 | 松下电器产业株式会社 | Content reproduction apparatus and method |
| EP0785547A3 (en) * | 1996-01-16 | 1998-08-05 | International Business Machines Corporation | Unique identifier for optical media |
| US6144742A (en) * | 1996-05-16 | 2000-11-07 | Mitsushita Electric Industrial Co., Ltd. | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
| US5886979A (en) * | 1996-10-21 | 1999-03-23 | Fujitsu Limitd | Information recording medium and method for recording and reproducing information to a medium to prevent unauthorized copying |
| KR100272733B1 (en) * | 1996-10-21 | 2000-11-15 | 아끼구사 나오유끼 | Information recording medium and reproucing method, truth judging method for the same, and recording/reproducing apparatus for the same |
| KR100595497B1 (en) * | 1998-08-27 | 2006-10-24 | 엘지전자 주식회사 | Digital Information Storage Media and Its Prevention Methods |
| USRE44503E1 (en) | 1998-10-05 | 2013-09-17 | Kabushiki Kaisha Toshiba | Memory device storing identifying information and memory card including the same |
| USRE42398E1 (en) | 1998-10-05 | 2011-05-24 | Kabushiki Kaisha Toshiba | Memory system |
| WO2001056023A1 (en) * | 2000-01-27 | 2001-08-02 | Cd Cash Co., Ltd. | Optical recording medium for preventing illegal duplication, and a method for manufacturing and reproducing the same, and an authentication method using the same |
| KR100775148B1 (en) * | 2000-03-30 | 2007-11-12 | 엘지전자 주식회사 | Optical disk with copy protection and method for controlling the playback of the same |
| KR100419432B1 (en) * | 2000-08-19 | 2004-02-19 | 쎄텍 주식회사 | Copy Protected Optical Disc Manufacturing Method and Copy Protected Optical Disc |
| WO2003046910A1 (en) * | 2001-11-27 | 2003-06-05 | Ed-Contrive Inc. | Unauthorized copy recording medium use preventing method, and information recording medium to which the method is appied |
| US7366071B2 (en) | 2003-02-10 | 2008-04-29 | Sony Corporation | Data recording method and device, data recording medium, data reproduction method and device |
| WO2005024821A1 (en) * | 2003-08-29 | 2005-03-17 | General Electric Company | Method for facilitating copyright protection in digital media and digital media made thereby |
| AU2005200509B2 (en) * | 2004-02-19 | 2007-06-14 | Rovi Solutions Corporation | Improvements in or relating to the copy protection of optical discs |
| US7721338B2 (en) | 2004-02-19 | 2010-05-18 | Macrovision Corporation | Defeat of the copy protection of optical discs |
| GB2411282A (en) * | 2004-02-19 | 2005-08-24 | Macrovision Corp | Optical Disc Copy Protection |
| US8059937B2 (en) | 2004-02-19 | 2011-11-15 | Rovi Solutions Corporation | Relating to the copy protection of optical discs |
| AU2005200509B8 (en) * | 2004-02-19 | 2005-09-08 | Rovi Solutions Corporation | Improvements in or relating to the copy protection of optical discs |
| GB2411282B (en) * | 2004-02-19 | 2007-05-30 | Macrovision Corp | Improvements in or relating to the copy protection of optical discs |
| KR100775149B1 (en) * | 2005-03-30 | 2007-11-12 | 엘지전자 주식회사 | recording media for replay and data replaying method thereof |
| JP2012533805A (en) * | 2009-07-17 | 2012-12-27 | セキュアー コンテント ストレージ アソシエイション， リミテッド ライアビリティ カンパニー | A simple non-autonomous peering media replication detector |
| US9136010B2 (en) | 2010-04-12 | 2015-09-15 | Samsung Electronics Co., Ltd | Method for generating physical identifier in storage device and machine-readable storage medium |
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