JPH05266576A - Method for preventing copy of optical disk and device therefor - Google Patents

Method for preventing copy of optical disk and device therefor

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Publication number
JPH05266576A
JPH05266576A JP6260992A JP6260992A JPH05266576A JP H05266576 A JPH05266576 A JP H05266576A JP 6260992 A JP6260992 A JP 6260992A JP 6260992 A JP6260992 A JP 6260992A JP H05266576 A JPH05266576 A JP H05266576A
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JP
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Prior art keywords
sector
disk
optical
defective
method
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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.)
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JP6260992A
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Japanese (ja)
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JP2575989B2 (en )
Inventor
Kazunori Naito
Kazuo Nakajima
Toshikatsu Narumi
一雄 中島
一紀 内藤
利勝 鳴海
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Fujitsu Ltd
富士通株式会社
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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0092Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors
    • G11B20/00927Circuits 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
    • G11B20/00949Circuits 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0092Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors
    • G11B20/00927Circuits 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/12Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217Formatting, e.g. arrangement of data block or words on the record carriers on discs

Abstract

PURPOSE:To provide a method for preventing a unauthorized copy of a high reliability optical disk and an optical disk device by discriminating whether the copy is a genuine product or a copied product by reading the table of defective sector addresses without directly reading defective sector (labellings) while meeting the ISO specification. CONSTITUTION:When a defective sector S0 is present on an optical disk, the address of that sector is registered in an access unabling region W where a user can not make access with a normal method and the utilization of the sector S0 is prohibited. Moreover, the specific sector of the optical disk is intentionally made into a pseudo-defective sector S1 and when no pseudo-defective sector S1 is present on an optical disk, the disk is regarded as an optical disk which is copied without an authorization.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【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 This invention relates to an optical disk, and more particularly to an optical disk device fraud prevention method and method have been applied in the optical disc.

【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。 BACKGROUND Optical disks can store large amounts of data, since the random access is easy, it is expected to continue to spread widely.

【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。 [0003] Thus, when the optical disc is widespread, there is a possibility that the data and programs which have been stored in the optical disc is illegally copied to another storage medium. 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。 Thus, while protecting the copyright for data and programs, in order to make widely popularized optical disk, it is necessary to make some measures to prevent the unauthorized copying.

【0004】図6は光ディスク装置の概念図である。 [0004] FIG. 6 is a conceptual diagram of an optical disk apparatus. 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 The loading port of the drive 20 being adapted to the optical disc 1 is loaded, and the drive 20 and the host CPU30 is S
CSI(Small Computer Systems Interface)40を介して接続される。 CSI is connected via a (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。 [0005] FIG. 7 shows a structure of an optical disc 1 based on the international standard (ISO standard). 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 Third accessible region to 9996 tracks from the track the user access in the normal way (hereinafter referred to as normal mode) A
である。 It is. このアクセス可領域Aは全領域がRAM部12 The accessible area A is the total area of ​​RAM 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。 If case it is, or the entire region is a ROM unit 11, further, a part of the ROM portion 11 ungated of the outer peripheral portion (inner peripheral portion), the other part was without a RAM unit 12, is a so-called partial ROM If there is a.

【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 [0006] 3 tracks of the inner periphery of accessible region A serial number of the disk, the address range of the ROM area, the address range of the RAM area, etc., DMA (Disk Management Are data required is entered in disk management
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。 A a) area B, a user is not able to access the above normal mode can be accessed by all areas accessible mode (hereinafter referred to as the entire region mode) using a special command which is determined by the ISO standards .

【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。 [0007] The DMA is the inner circumference (outer) area B control zone C is provided, further, margin D is provided on the inner peripheral portion (outer peripheral portion). 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。 The inner (outer) control zone C and margin D user in the entire region mode is to be able to access. 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。 Incidentally, the whole area inaccessible the region only in the mode B, C, and hereinafter referred to as inaccessible area W D.

【0008】上記、上記DMA領域Bの内には更にPD [0008] The above, even within the DMA area B 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 Provided a region called L region Bp, when physical formatting when the optical disk manufacturing, defective sectors S
0のアドレスが登録され、該欠陥セクタS 0の以後の使用を禁止するようにしている。 Address 0 is registered, so that prohibits further use of the defective sector S 0.

【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。 [0009] data written in the R0M 11 or the RAM 12 is made available by an application program installed in the host CPU 30, the application program in the ROM unit 11 or the RAM unit 12 of the optical disk 1 when mounted on written and drive 20 the optical disk 1, sometimes it dropped to the host CPU 30, or may also be incorporated in the host CPU 30 in other ways.

【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。 [0010] The optical disk that is used in the optical disk apparatus according to such a configuration dictionary, encyclopedia, novels, there is that any kind of copyrighted material such as game software is sold is recorded in ROM form or RAM format , in this case, there is a need to be subjected to some kind of anti-piracy measures.

【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 [0011] As anti-piracy measures thus data stored in the medium, for example, JP 60-1455
01号公報に記載された方法がある。 There is the method described in 01 JP. 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。 According to this, compared to a physical means previously writes the label, the reference pattern which gave the label of the medium read by a recording and reproducing apparatus in the recording and reproducing apparatus to a medium unique position, mismatch when, that is, one in which the medium does not have the above labels, or labels to copy products different media.

【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。 [0012] The optical disk in which the physical process is disclosed in a unique position to be every optical disc JP 60-145501.

【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。 Software specifically for the copy prohibition on the optical disk [0007], and can not be hardware measures, there is always a risk that unauthorized copy is made, this is even a possibility of inhibiting the spread of the optical disk . 特に、3.5 In particular, 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 The inch optical disc, additional recording or erasing, in addition to the rewritable recordable optical disc, the desired data and programs 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。 Reproduction only recorded in OM unit 11, or be a partial ROM type optical disk which is partly a read only continue to market have been studied.

【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。 [0014] However, if no copy inhibition measures have been made on the optical disc, the contents of the desired data or programs recorded in the ROM 11 and the RAM 12 is illegally copied, it is possible that the copyright is 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。 [0015] software-for copy prohibition on the optical disk, and hardware measures is applied, the format, but these problems are resolved, therefore, that it deviates from international standards that are going to be ongoing (ISO standard) it is not possible to 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。 [0016] In the method described in JP 60-175254 discloses and 60-175254, JP-would be incompatible with the ISO standard from where to form the physical labeling of media, inconvenient or was, and to make use of the direct signal obtained from the label in order to recognize the label, and malfunction may occur by attachment of dust or the like, there is a disadvantage unreliable.

【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。 [0017] A The present invention has been proposed in view of the above conventional circumstances, comply with ISO standards, moreover, instead of reading a defective sector (labeling) directly reads the table of the address of the defective sector manner so as to determine whether genuine or copy items in, it is an object to provide a illegal copy prevention method of a reliable optical Oyobi optical disk apparatus.

【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。 SUMMARY OF THE INVENTION This invention adopts the following means to achieve the above object. すなわち、光ディスク1に欠陥セクタS 0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 That is, when a defective sector S 0 on the optical disc 1, inaccessible inaccessible area W in the user usual manner, the defective sector and registering the address of the sector 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S 1となし、該疑似欠陥セクタS 1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。 An optical disk that prohibits the use of 1, which as regards specific sector of the optical disk 1 deliberately poor and the pseudo defective sector S 1 ungated, and when the optical disk is illegally copied without defective sectors S 1 similar該疑it is.

【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S 1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S 0と疑似欠陥セクタS 1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S 1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S 1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S 1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 The optical disc apparatus for implementing this method, as shown in FIG. 1, in which the address registration unit 120 which registers the authenticity of an address of the pseudo defective sector S 1 of the optical disc mounted on the drive, mounted on the drive defective sector S 0 and accesses the PDL area Bp the address of the pseudo defective sector S 1 is registered, the defective sector reading means 110 for reading the intentionally poor and the address of the pseudo defective sector S 1 was, the the address of the pseudo defective sector S 1 read by the defective sector reading unit 110, compares the authenticity of an address of the pseudo defective sector S 1, which is registered in the address registration unit 120, indicating that the illegal copy product when they do not match comparison means for outputting a signal 3
00とを備える構成としている。 It is 00 and configured to include a.

【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、 [0020] The defective sector reading unit 110 includes a normal mode for accessing the accessible area A user can access in the usual manner as shown in FIG. 4,
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、 A mode switching unit 111 for switching between the whole area mode to access the inaccessible area W,
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。 More comprised a PDL area read section 112 to read the PDL area Bp by the entire region mode.

【0021】また、疑似欠陥セクタS 1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 region of the pseudo defective sector S 1, it is also possible to user other than the PDL region utilize inaccessible area in the usual way.

【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S 1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。 When [acting] on the optical disc leave the address of the pseudo defective sector S 1 which has at least one having a unique address in the optical disk, the address registration unit 120 of the system side to correspond to that of the same unique as the read it it is necessary to store the address. 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。 Then, in the comparison of the comparing means 300, only when the address of the read address and the authenticity defective sector reading unit 110 matches, in which are authentic optical disk. 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 However, when the optical disk is a copy products, pseudo defective sector is written in the copy source to the optical disk of the inaccessible area W (e.g. PDL region of DMA area) 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。 Can not be copied to the destination of the optical disk to the first address, will not be able to compare both addresses at the time of reading, it can be seen that a copy product.

【0023】上記疑似欠陥セクタS 1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。 [0023] a combination of the pseudo defective sector S 1 a plurality of sectors, not easy to further copies.

【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。 DETAILED DESCRIPTION FIG. 2 shows an embodiment block diagram of an apparatus for producing an optical disk of the present invention, and FIG. 3 is a flow diagram.

【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S 0 [0025] The host CPU30 is provided with a conventional manner physical formatting section 240, it determines the size of the data area of the RAM portion or the defective sector S 0,
が検出されてDMA領域(Disk Management Area)のPD PD of DMA regions (Disk Management Area) but is detected
L(Primary Difect List) 領域Bpにそのアドレスが書き込まれる(図3、F31)。 L that address is written to the (Primary Difect List) area Bp (FIG. 3, F 31).

【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S 0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)。 [0026] Then, from the sector other than the sector where the defective sector distribution determining unit 210 is a defective sector S 0 by the physical formatting, at least one for example using a random number, intent preferably two or more, in subsequent working to determine the address of the sector to be in to failure (Fig. 3, F32).

【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)。 On the other hand, it registers the address of the sector to be deliberately poor as described above in the address registration unit 120 of the application program that uses the optical disc (Fig. 3, F33). 尚、上記したように、 It should be noted that, as described above,
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。 The application program may also be written to the optical disc to be produced therefrom, also sometimes written in 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S 0を形成する。 [0028] Then, by operating the crystallisation writing means 220 to form a pseudo-defective sectors S 0 sectors and extracted and crystallized as described above. 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。 That is, the change over from the normal rotation speed 3000rpm to 300rpm by means 221 switch first rotational speed, changing over from the normal power 9mW to 15mW by the power switching means 222. 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 Then, 300 rpm with the write unit 223 is set as described above in the sectors extracted as described above, 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S 1とする(図3、F The laser beam was irradiated at 5 mW, deliberately destroying the sector (crystallization) is a pseudo-defective sector S 1 (FIG. 3, F
34→F35)。 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 Thereafter, by formatting again, the PDL area Bp pseudo defective sector S
1のアドレスが記録されたことになる。 So that one address 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。 [0029] Figure 4 shows a functional block diagram of a reading system for reproducing an optical disk manufactured in this way, FIG. 5 is a flow diagram. 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S 1の分布を読み出す。 First, in operation defective sector reading unit 110 reads the distribution of the pseudo-defective sector S 1. すなわち、欠陥セクタ読み取り手段110 That is, the defective sector reading unit 110
を構成するモード切り換え部111は上記PDL領域B Mode switching unit 111 constituting the above PDL region 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、 And an instruction to switch the access mode of the drive 20 in the entire area access mode that can be accessed even p,
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 Then actuated PDL reading unit 112, a pseudo defective sector is written in the PDL area Bp S 1のアドレスを読み取る(図5、F51→F52)。 Read one of the address (Fig. 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S 1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S 1とをアドレス比較手段130で比較する(図5、F53→F54)。 If this by obtaining a pseudo defective sector distribution, and a pseudo-defective sector S 1 read from authentic address and an optical disc as described above pseudo defective sector S 1 of address registration unit 120 of the program has an address comparing means 130 comparison (Fig. 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。 At this time, both are the process continues match is inconsistent with the process 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 [0030] However, when copying on a system having only a normal copy command to the other optical disc 1b from one optical disk 1a, the copy source optical disk 1a PD
L領域Bpに書き込まれている欠陥セクタS 0及び疑似欠陥セクタS 1のアドレスはコピー先の光ディスク1b L is being written defective sectors S 0 and the address of the pseudo defective sector S 1 in the area Bp destination optical disc 1b
にはコピーできない。 It can not be copied to. 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。 Thus, the optical disc 1 mounted on the drive 20, will be from the PDL area Bp if a pirated optical disc 1b from authentic optical disk 1a, it is impossible to obtain the address of the pseudo defective sector processing There will be interrupted.

【0031】上記例は疑似欠陥セクタS 1がRAM部1 [0031] The above examples are false defect sector S 1 is the RAM section 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S 1をROM部11に形成することを制限するものではない。 It shows a case that is formed in two, but this method is not intended to limit the formation of a pseudo-defective sector S 1 in the ROM section 11. 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。 Nachi Suwa, when forming a ROM section 11 in the stamper, so as to form a meaningless irregularities in at least one sector and extracted arbitrarily. 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S 1のアドレス分布は同じになる。 However, uneven position of the stamper (address) because it is impossible to change for each optical disk, the address distribution of the pseudo defective sector S 1 of all optical disc engraved one kind of work in this case the same Become.

【0032】更に、上記疑似欠陥セクタS 1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。 Furthermore, the number of the pseudo defective sector S 1 is better to provide more than the one it is possible to effectively achieve even illegal copy is difficult to become an object of the present invention.

【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。 The invention described above, according to the present invention forms a pseudo defective sector, and recorded in an area which can not be the address of the defective sector user accesses in the normal way, when the optical disk reproduction, the user is in the normal It reads the address to access the whole area mode that can access to inaccessible areas in a way, so that to compare the address of the authentic have the application program that uses the optical disc. 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。 Thus, the optical disc illegal copy is made, it is not possible to copy the address to the user is recorded in an area inaccessible in the usual way, that it can be seen that an illegal copy will be no subject of comparison Become. 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。 Therefore, according to this method may yet reliable copy protection without departing the ISO standards that ongoing.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の原理図である。 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。 Figure 2 is an example block diagram of a system for manufacturing an optical disk of the present invention.

【図3】図2のシステムのフロー図である。 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。 4 is an embodiment block diagram of a system for reproducing the 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。 6 is a prior art schematic diagram.

【図7】光ディスクの各フィールドの割り付け構造である。 7 is a layout structure of each field of the optical disk.

【符号の説明】 DESCRIPTION OF SYMBOLS

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 S 0欠陥セクタ S 1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 disc 20 drives 110 defective sector reading unit 120 address registration unit 120 the address registration unit 300 comparing means S 0 defective sectors S 1 pseudo defective sector Bp PDL area A accessible area W inaccessible area

Claims (6)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 光ディスク(1) に欠陥セクタ(S 0 )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 0 )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(S 1 )となし、該疑似欠陥セクタ(S 1 )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. A when a defective sector (S 0) to the optical disc (1), the inaccessible inaccessible area user usual way (W), said defective sector registered addresses of the sectors (S 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) it is illegally copy if there is no copy protection method for an optical disc regarded as an optical disk.
  2. 【請求項2】 疑似欠陥セクタ(S 1 )が、光ディスクのR 2. A pseudo defective sector (S 1) is, the optical disc R
    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。 Optical disc copy protection method according to claim 1 which is formed in a concavo-convex pits in the OM unit.
  3. 【請求項3】 疑似欠陥セクタ(S 1 )が、光ディスクのR 3. A pseudo-defective sector (S 1) is, the optical disc R
    AM部を結晶化させることによって形成された請求項1 Claim the AM portion is formed by crystallizing 1
    に記載の光ディスクのコピー防止方法。 Optical disc copy protection method according to.
  4. 【請求項4】 光ディスク(1) に欠陥セクタ(S 0 )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 0 )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(S 1 )のアドレスを登録したアドレス登録部(120) Wherein when a defective sector (S 0) to the optical disc (1), the inaccessible inaccessible area user usual way (W), said defective sector registered addresses of the sectors (S in the optical disk to prohibit the use of 0), the drive (address registration unit that registers the address of the optical disk mounted on 20) the authenticity of the pseudo defective sector (S 1) (120)
    と、 ドライブ(20)に装着された光ディスクの欠陥セクタ(S 0 ) When the drive (20) mounted on defective sectors of the optical disc (S 0)
    と意図的に不良とされた疑似欠陥セクタ(S 1 )のアドレスとが登録されているPDL(Primary Difect List) 領域 Deliberately poor and has been pseudo defective sector PDL in which the address of the (S 1) are registered (Primary Difect List) area and
    (Bp)をアクセスして、上記疑似欠陥セクタ(S 1 )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(S 1 )のアドレスと、アドレス登録部(1 (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) If, address registration unit (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 Comparing the authenticity of addresses registered in 20), comparing means for outputting a signal indicating that the illegal copy product when they do not match
    (300) とを備えた光ディスク装置。 (300) and the optical disc apparatus equipped with.
  5. 【請求項5】 上記欠陥セクタ読み取り手段(110) が、 ユーザが通常の方法でアクセスできるアクセス可領域 Wherein said defective sector reading means (110) is accessible region that can be accessed using the normal method
    (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。 A normal mode for accessing (A), the mode switching means for switching between full area mode to access the inaccessible area (W) (10) and, the PDL area by the total area mode (Bp) the optical disk apparatus according more composed claim 4 and defective sector address reading means (11) for reading the.
  6. 【請求項6】 上記疑似欠陥セクタ(S 1 )のアドレスが登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. A region in which address is registered the pseudo defective sector (S 1) is an optical disk apparatus according to claim 4 users other than PDL area (Bp) is inaccessible area in the usual way.
JP6260992A 1992-03-18 1992-03-18 Optical disc copy protection method and apparatus Expired - Lifetime JP2575989B2 (en)

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US08032481 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
DE19934308680 DE4308680B4 (en) 1992-03-18 1993-03-18 Method and device for preventing unauthorized use of a recording medium
US08730654 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

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO1996016401A1 (en) * 1994-11-17 1996-05-30 Matsushita Electric Industrial Co., Ltd. Marking generating apparatus, method of forming laser marking on optical disk, reproducing apparatus, optical disk and optical disk producing method
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
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
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Secure Content Storage Association, LLC. A simple non-autonomous peering media duplication 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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62276648A (en) * 1986-05-26 1987-12-01 Toshiba Comput Eng 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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62276648A (en) * 1986-05-26 1987-12-01 Toshiba Comput Eng 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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US5930215A (en) * 1993-10-06 1999-07-27 Sony Corporation CD-Rom with machine-readable I.D. code
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
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
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
US5761301A (en) * 1994-11-17 1998-06-02 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
USRE41032E1 (en) 1994-11-17 2009-12-01 Panasonic Corporation Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk
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USRE43230E1 (en) 1994-11-17 2012-03-06 Panasonic Corporation Optical disk including a barcode pattern formed by a laser using pulse width modulation
WO1996016401A1 (en) * 1994-11-17 1996-05-30 Matsushita Electric Industrial Co., Ltd. Marking generating apparatus, method of forming laser marking on optical disk, reproducing apparatus, optical disk and optical disk producing method
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
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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
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
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
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
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
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
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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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
USRE42398E1 (en) 1998-10-05 2011-05-24 Kabushiki Kaisha Toshiba Memory system
USRE44503E1 (en) 1998-10-05 2013-09-17 Kabushiki Kaisha Toshiba Memory device storing identifying information and memory card including 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
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
US7721338B2 (en) 2004-02-19 2010-05-18 Macrovision Corporation Defeat of the copy protection of optical discs
US8059937B2 (en) 2004-02-19 2011-11-15 Rovi Solutions Corporation Relating to the copy protection of optical discs
GB2411282A (en) * 2004-02-19 2005-08-24 Macrovision Corp Optical Disc Copy Protection
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Secure Content Storage Association, LLC. A simple non-autonomous peering media duplication 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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