JP4091602B2 - 高密度光ディスクと、その光ディスクへの暗号化記録方法及び光ディスクからの再生方法 - Google Patents
高密度光ディスクと、その光ディスクへの暗号化記録方法及び光ディスクからの再生方法 Download PDFInfo
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- JP4091602B2 JP4091602B2 JP2004512129A JP2004512129A JP4091602B2 JP 4091602 B2 JP4091602 B2 JP 4091602B2 JP 2004512129 A JP2004512129 A JP 2004512129A JP 2004512129 A JP2004512129 A JP 2004512129A JP 4091602 B2 JP4091602 B2 JP 4091602B2
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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
-
- 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
-
- 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
- G11B20/00485—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
- G11B20/00492—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted
- G11B20/00507—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted wherein consecutive physical data units of the record carrier are encrypted with separate encryption keys, e.g. the key changes on a cluster or sector basis
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Description
Claims (7)
- データがディスクトラックの外周から内周方向へ記録され、
前記データが不連続な記録フォーマットで記録されると共に、前記データが記録されるデータ記録領域のアドレスユニットには、ディスクの外周から該当位置までの離隔距離を表すディスク半径情報とアドレスユニット番号とが記録され、前記データは、前記ディスク半径情報とアドレスユニット番号とに基づき暗号化されて記録されていることを特徴とする高密度光ディスク。 - 前記高密度光ディスクは、再生専用ブルーレイディスク(BD−ROM)であることを特徴とする請求項1に記載の高密度光ディスク。
- 高密度光ディスクに記録され、前記ディスクの外周から該当位置までの離隔距離を表すディスク半径情報とアドレスユニット番号とを基にして、前記高密度光ディスクに記録されるデータを暗号化する1段階と、
前記暗号化したデータを、ディスク外周から内周方向へ記録する2段階とを含むことを特徴とする高密度光ディスクへの暗号化記録方法。 - 前記2段階は、前記暗号化したデータを、再記録可能な高密度光ディスクに対応する不連続な記録フォーマットで記録することを特徴とする請求項3に記載の高密度光ディスクへの暗号化記録方法。
- 高密度光ディスクに記録され、前記ディスクの外周から該当位置までの離隔距離を表すディスク半径情報とアドレスユニット番号とを探索して読み出す1段階と、
その読み出したディスク半径情報とアドレスユニット番号とを基にして、データを解読する2段階と、
前記解読したデータを元の信号にデコーディングして再生信号処理する3段階とを含むことを特徴とする高密度光ディスクからの暗号化データ再生方法。 - 前記2段階は、前記読み出したディスク半径情報とアドレスユニット番号を組合せて利用して、事前に設定された暗号化方式に対応する方式で解読することを特徴とする請求項5に記載の高密度光ディスクからの暗号化データ再生方法。
- 前記第2段階は、前記暗号化したデータが所定のデータブロック内でディスクトラックの外周から内周方向へ記録されて、ディスクトラックの外周から内周方向へデコーディングを実施することを特徴とする請求項5に記載の高密度光ディスクからの暗号化データ再生方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020031744A KR100915875B1 (ko) | 2002-06-05 | 2002-06-05 | 고밀도 재생 전용 광디스크와, 그 광디스크의 암호화 기록및 재생방법 |
PCT/KR2003/001109 WO2003105138A1 (en) | 2002-06-05 | 2003-06-05 | High-density optical disc, method for recording and reproducing encrypted data thereon |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005529441A JP2005529441A (ja) | 2005-09-29 |
JP4091602B2 true JP4091602B2 (ja) | 2008-05-28 |
Family
ID=29728613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004512129A Expired - Fee Related JP4091602B2 (ja) | 2002-06-05 | 2003-06-05 | 高密度光ディスクと、その光ディスクへの暗号化記録方法及び光ディスクからの再生方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US20040264694A1 (ja) |
EP (1) | EP1509912A4 (ja) |
JP (1) | JP4091602B2 (ja) |
KR (1) | KR100915875B1 (ja) |
CN (2) | CN100353430C (ja) |
AU (1) | AU2003232672A1 (ja) |
TW (1) | TWI275081B (ja) |
WO (1) | WO2003105138A1 (ja) |
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KR20040016536A (ko) * | 2002-08-17 | 2004-02-25 | 엘지전자 주식회사 | 고밀도 재생 전용 광디스크의 어드레스 정보 기록방법과,그에 따른 고밀도 재생 전용 광디스크 |
KR20040028469A (ko) | 2002-09-30 | 2004-04-03 | 엘지전자 주식회사 | 1 회 기록 가능한 광디스크의 디펙트 영역 관리방법 |
US7233550B2 (en) | 2002-09-30 | 2007-06-19 | Lg Electronics Inc. | Write-once optical disc, and method and apparatus for recording management information on write-once optical disc |
KR101036473B1 (ko) | 2002-12-11 | 2011-05-24 | 엘지전자 주식회사 | 1회 기록가능한 광디스크에 있어서의 중첩기록 관리방법 및관리정보 기록방법 |
TWI314315B (en) | 2003-01-27 | 2009-09-01 | Lg Electronics Inc | Optical disc of write once type, method, and apparatus for managing defect information on the optical disc |
US7313065B2 (en) | 2003-08-05 | 2007-12-25 | Lg Electronics Inc. | Write-once optical disc, and method and apparatus for recording/reproducing management information on/from optical disc |
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CN1996479B (zh) * | 2006-12-29 | 2010-11-24 | 清华大学 | 多阶游长数据转换方法及装置以及蓝光多阶光存储装置 |
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JP5011326B2 (ja) | 2009-02-24 | 2012-08-29 | 株式会社日立製作所 | 情報記録媒体、アドレス生成及び検出方法、再生及び記録装置 |
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-
2002
- 2002-06-05 KR KR1020020031744A patent/KR100915875B1/ko not_active IP Right Cessation
-
2003
- 2003-06-05 TW TW092115325A patent/TWI275081B/zh not_active IP Right Cessation
- 2003-06-05 CN CNB038009439A patent/CN100353430C/zh not_active Expired - Fee Related
- 2003-06-05 JP JP2004512129A patent/JP4091602B2/ja not_active Expired - Fee Related
- 2003-06-05 EP EP03757210A patent/EP1509912A4/en not_active Withdrawn
- 2003-06-05 AU AU2003232672A patent/AU2003232672A1/en not_active Abandoned
- 2003-06-05 US US10/485,912 patent/US20040264694A1/en not_active Abandoned
- 2003-06-05 WO PCT/KR2003/001109 patent/WO2003105138A1/en active Application Filing
- 2003-06-05 CN CN2007101427786A patent/CN101114493B/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO2003105138A1 (en) | 2003-12-18 |
AU2003232672A1 (en) | 2003-12-22 |
EP1509912A1 (en) | 2005-03-02 |
CN101114493B (zh) | 2010-09-01 |
TWI275081B (en) | 2007-03-01 |
JP2005529441A (ja) | 2005-09-29 |
CN101114493A (zh) | 2008-01-30 |
KR20030093859A (ko) | 2003-12-11 |
KR100915875B1 (ko) | 2009-09-07 |
EP1509912A4 (en) | 2005-11-09 |
TW200405294A (en) | 2004-04-01 |
CN1550008A (zh) | 2004-11-24 |
CN100353430C (zh) | 2007-12-05 |
US20040264694A1 (en) | 2004-12-30 |
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