JP2006196179A - 記録媒体の複写防止情報管理方法と、複写防止情報が記録された記録媒体及びその記録媒体の再生方法 - Google Patents
記録媒体の複写防止情報管理方法と、複写防止情報が記録された記録媒体及びその記録媒体の再生方法 Download PDFInfo
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- G—PHYSICS
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- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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- G—PHYSICS
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- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
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- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
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- G—PHYSICS
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- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
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- G11B20/00297—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in a management area, e.g. the video manager [VMG] of a DVD
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
- G11B20/00326—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being embossed on the record carrier
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- G—PHYSICS
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- 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
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1288—Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2541—Blu-ray discs; Blue laser DVR discs
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Abstract
【解決手段】本発明は、再生専用ブルーレイディスク(BD−ROM)のような高密度光ディスクのデータ領域に記録された暗号化されたコンテンツの無断複写を防止するための情報(CPI)の管理方法に係り、記録媒体に暗号化されたデータを記録するとき、前記暗号化されたデータを解読するのに必要な複写防止情報を予め決めたPIC領域に記録し、かつPIC領域でない他の領域にも少なくとも1回以上複写して記録しておく。
【選択図】図8
Description
Claims (21)
- (a)データの記録または再生を制御するための、複写を防止したデータを再生及び処理のいずれか又は双方を行うのに必要とされる複写防止情報がどこに記録されているかを示すための標識を含む制御情報ユニットを生成するステップと;
(b)前記制御情報ユニットを記録媒体の特定の領域に記録するステップとを含むことを特徴とする
記録媒体上にデータを記録する方法。 - (c)前記複写を防止したデータを前記記録媒体のメインデータ領域内に記録するステップをさらに含むことを特徴とする請求項1に記載の方法。
- 前記特定の領域は、前記記録媒体内に決められたリードイン領域またはリードアウト領域内の領域であることを特徴とする請求項1に記載の方法。
- (d)前記複写防止情報を前記記録媒体内に記録するステップをさらに含むことを特徴とする請求項1に記載の方法。
- 前記ステップ(d)は、前記複写防止情報を、前記制御情報ユニットが記録されるリードイン領域内の特定の領域以外の領域内に記録することを特徴とする請求項4に記載の方法。
- 前記ステップ(d)は、前記記録媒体上に事前に記録されたオリジナルの複写防止情報から複写された複写防止情報を記録することを特徴とする請求項5に記載の方法。
- 前記ステップ(a)において、前記標識は、前記複写された複写防止情報が記録されている位置を示すことを特徴とする請求項6に記載の方法。
- 前記複写防止情報は、前記複写を防止したデータの再生及び処理のいずれか又は双方を行うのに必要とされるキー値を含むことを特徴とする請求項4に記載の方法。
- 前記記録媒体は光ディスクであり、前記ステップ(a)は、少なくともディスク型式情報、ディスクサイズ情報、ディスク構造情報、データ領域割当情報を含むディスク情報を含む制御情報ユニットを生成することを特徴とする請求項1に記載の方法。
- 前記ステップ(a)で、前記記録媒体内に事前記録されたオリジナルの制御情報ユニットから複写された制御情報ユニットを生成し、前記複写防止情報が、前記記録媒体内に事前記録されたオリジナルの複写防止情報から複写された情報であり、前記複写された制御情報ユニット内に含まれる前記標識が、少なくとも前記複写された複写防止情報が記録されている特定の領域を示すことを特徴とする請求項9に記載の方法。
- データの記録または再生を制御するための、複写を防止したデータを再生及び処理のいずれか又は双方を行うのに必要とされる複写防止情報がどこに記録されているかを示すための標識を含む制御情報ユニットを含む制御データ領域と;
データが記録されたまたは記録されるべきメインデータ領域とを備えることを特徴とする
記録媒体。 - 前記メインデータ領域は、前記複写防止情報によって生成された複写を防止したデータを含むことを特徴とする請求項11に記載の記録媒体。
- 前記複写防止情報は、前記制御情報ユニットが記録されている制御データ領域内の特定の領域以外の領域内に記録されることを特徴とする請求項11に記載の記録媒体。
- 前記複写防止情報は、前記記録媒体上に事前記録されたオリジナルの複写防止情報から複写された情報であることを特徴とする請求項13に記載の記録媒体。
- 前記標識は、前記複写された複写防止情報が記録されている領域を示すことを特徴とする請求項14に記載の記録媒体。
- 前記制御データ領域は、前記記録媒体内に決められたリードイン領域またはリードアウト領域であることを特徴とする請求項11に記載の記録媒体。
- 前記制御データ領域は、前記複写防止情報が記録される領域と、前記制御情報ユニットが記録される他の領域に分割されることを特徴とする請求項16に記載の記録媒体。
- 前記記録媒体は光ディスクであり、前記制御情報ユニットは、少なくともディスク型式情報、ディスクサイズ情報、ディスク構造情報、データ領域割当情報を含むディスク情報を含むことを特徴とする請求項11に記載の記録媒体。
- 前記制御情報ユニットは、前記記録媒体内に事前記録されたオリジナルの制御情報ユニットから複写された情報ユニットであり、前記複写防止情報は、前記記録媒体内に事前記録されたオリジナルの複写防止情報から複写された情報であり、前記複写された制御情報ユニット内に含まれる前記標識は、少なくとも前記複写された複写防止情報が記録されている特定の領域を示すことを特徴とする請求項18に記載の記録媒体。
- 前記複写防止情報は、前記複写を防止したデータの再生及び処理のいずれか又は双方を行うのに必要とされるキー値を含むことを特徴とする請求項11に記載の記録媒体。
- 前記キー値は、ウォーブル形状及び直線状プレピット形状のいずれか又は双方で記録されることを特徴とする請求項20に記載の記録媒体。
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KR10-2003-0004930 | 2003-01-24 | ||
KR1020030004930A KR100952949B1 (ko) | 2003-01-24 | 2003-01-24 | 고밀도 광디스크의 복사 방지 정보 관리방법 |
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JP2006076370A Expired - Fee Related JP4790457B2 (ja) | 2003-01-24 | 2006-03-20 | 記録媒体の複写防止情報管理方法と、複写防止情報が記録された記録媒体及びその記録媒体の再生方法 |
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US (2) | US8090103B2 (ja) |
EP (2) | EP1650758B1 (ja) |
JP (2) | JP2006516788A (ja) |
KR (1) | KR100952949B1 (ja) |
CN (2) | CN1822172A (ja) |
AT (1) | ATE494613T1 (ja) |
AU (1) | AU2004206485B2 (ja) |
BR (1) | BRPI0403961A (ja) |
CA (1) | CA2487408C (ja) |
DE (1) | DE602004030917D1 (ja) |
MX (1) | MXPA04012594A (ja) |
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EP1586094A1 (en) | 2005-10-19 |
EP1650758A2 (en) | 2006-04-26 |
DE602004030917D1 (de) | 2011-02-17 |
AU2004206485A1 (en) | 2004-08-05 |
JP2006516788A (ja) | 2006-07-06 |
CN1698115B (zh) | 2012-07-11 |
EP1586094B1 (en) | 2013-08-21 |
BRPI0403961A (pt) | 2005-03-01 |
US8009832B2 (en) | 2011-08-30 |
CA2487408A1 (en) | 2004-08-05 |
AU2004206485B2 (en) | 2009-01-08 |
CN1698115A (zh) | 2005-11-16 |
EP1586094A4 (en) | 2006-12-27 |
US8090103B2 (en) | 2012-01-03 |
KR20040067699A (ko) | 2004-07-30 |
CA2487408C (en) | 2012-10-23 |
RU2005121703A (ru) | 2006-01-20 |
WO2004066298A1 (en) | 2004-08-05 |
AU2004206485A2 (en) | 2004-08-05 |
RU2322707C2 (ru) | 2008-04-20 |
MXPA04012594A (es) | 2005-07-01 |
EP1650758A3 (en) | 2006-11-29 |
JP4790457B2 (ja) | 2011-10-12 |
CN1822172A (zh) | 2006-08-23 |
US20060143480A1 (en) | 2006-06-29 |
RU2006109209A (ru) | 2007-09-27 |
US20050209971A1 (en) | 2005-09-22 |
EP1650758B1 (en) | 2011-01-05 |
ATE494613T1 (de) | 2011-01-15 |
RU2328778C2 (ru) | 2008-07-10 |
KR100952949B1 (ko) | 2010-04-15 |
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