CN1131796A - 数字磁记录/再现系统的防复制方法及装置 - Google Patents
数字磁记录/再现系统的防复制方法及装置 Download PDFInfo
- Publication number
- CN1131796A CN1131796A CN95121501A CN95121501A CN1131796A CN 1131796 A CN1131796 A CN 1131796A CN 95121501 A CN95121501 A CN 95121501A CN 95121501 A CN95121501 A CN 95121501A CN 1131796 A CN1131796 A CN 1131796A
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Images
Classifications
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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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
-
- 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
- G11B20/00217—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
- G11B20/00333—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 header data, e.g. in sector headers
-
- 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
- G11B20/00557—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 further management data is encrypted, e.g. sector headers, TOC or the lead-in or lead-out areas
-
- 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
- G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
- G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
- G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
-
- 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
- G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
- G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
- G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
- G11B20/00768—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
- G06F2211/007—Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
- H04N2005/91328—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
- H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Technology Law (AREA)
- Television Signal Processing For Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims (38)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR33336/1994 | 1994-12-08 | ||
KR33336/94 | 1994-12-08 | ||
KR1019940033336A KR0136458B1 (ko) | 1994-12-08 | 1994-12-08 | 디지탈 자기 기록재생 시스템의 복사 방지장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1131796A true CN1131796A (zh) | 1996-09-25 |
CN1074888C CN1074888C (zh) | 2001-11-14 |
Family
ID=19400751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN95121501A Expired - Lifetime CN1074888C (zh) | 1994-12-08 | 1995-12-08 | 数字磁记录/再现系统的防复制方法及装置 |
Country Status (6)
Country | Link |
---|---|
US (7) | US5689559A (zh) |
EP (1) | EP0716544B1 (zh) |
JP (1) | JP3105777B2 (zh) |
KR (1) | KR0136458B1 (zh) |
CN (1) | CN1074888C (zh) |
DE (1) | DE69526310T2 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1294568C (zh) * | 1996-12-19 | 2007-01-10 | 松下电器产业株式会社 | 光盘记录再生装置 |
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- 1995-12-01 US US08/566,000 patent/US5689559A/en not_active Ceased
- 1995-12-01 EP EP95308674A patent/EP0716544B1/en not_active Expired - Lifetime
- 1995-12-06 JP JP07318398A patent/JP3105777B2/ja not_active Expired - Lifetime
- 1995-12-08 CN CN95121501A patent/CN1074888C/zh not_active Expired - Lifetime
-
1998
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- 1998-06-12 US US09/097,162 patent/USRE36919E/en not_active Expired - Lifetime
-
2007
- 2007-07-17 US US11/826,680 patent/USRE44068E1/en not_active Expired - Lifetime
- 2007-07-17 US US11/826,682 patent/USRE43993E1/en not_active Expired - Lifetime
-
2009
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CN1294568C (zh) * | 1996-12-19 | 2007-01-10 | 松下电器产业株式会社 | 光盘记录再生装置 |
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USRE44121E1 (en) | 2013-04-02 |
EP0716544B1 (en) | 2002-04-10 |
USRE36919E (en) | 2000-10-17 |
CN1074888C (zh) | 2001-11-14 |
USRE43993E1 (en) | 2013-02-12 |
USRE37052E1 (en) | 2001-02-13 |
JPH08237596A (ja) | 1996-09-13 |
DE69526310D1 (de) | 2002-05-16 |
DE69526310T2 (de) | 2002-10-02 |
EP0716544A3 (en) | 1997-06-18 |
KR960025595A (ko) | 1996-07-20 |
USRE44106E1 (en) | 2013-03-26 |
USRE44068E1 (en) | 2013-03-12 |
US5689559A (en) | 1997-11-18 |
EP0716544A2 (en) | 1996-06-12 |
KR0136458B1 (ko) | 1998-05-15 |
JP3105777B2 (ja) | 2000-11-06 |
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Application publication date: 19960925 Assignee: SHENZHEN CHUANGWEI ELECTRONIC APPLIANCE TECH CO., LTD. Assignor: Stable Reid limited liability company Contract record no.: 2013990000563 Denomination of invention: Copy prevention method and apparatus of digital magnetic recording/reproducing system Granted publication date: 20011114 License type: Common License Record date: 20130909 Application publication date: 19960925 Assignee: Huizhou Aihua Media Co. Ltd. Assignor: Stable Reid limited liability company Contract record no.: 2013990000565 Denomination of invention: Copy prevention method and apparatus of digital magnetic recording/reproducing system Granted publication date: 20011114 License type: Common License Record date: 20130909 Application publication date: 19960925 Assignee: Nanjing Malata Technology Co., Ltd. Assignor: Stable Reid limited liability company Contract record no.: 2013990000559 Denomination of invention: Copy prevention method and apparatus of digital magnetic recording/reproducing system Granted publication date: 20011114 License type: Common License Record date: 20130909 Application publication date: 19960925 Assignee: Dongguan Changhe Electronic Co., Ltd. Assignor: Stable Reid limited liability company Contract record no.: 2013990000568 Denomination of invention: Copy prevention method and apparatus of digital magnetic recording/reproducing system Granted publication date: 20011114 License type: Common License Record date: 20130909 Application publication date: 19960925 Assignee: Guangzhou Changjia Electronic Co., Ltd. Assignor: Stable Reid limited liability company Contract record no.: 2013990000560 Denomination of invention: Copy prevention method and apparatus of digital magnetic recording/reproducing system Granted publication date: 20011114 License type: Common License Record date: 20130909 Application publication date: 19960925 Assignee: Putian Hanjiang Baili Electronic Plastic Co., Ltd. Assignor: Stable Reid limited liability company Contract record no.: 2013990000566 Denomination of invention: Copy prevention method and apparatus of digital magnetic recording/reproducing system Granted publication date: 20011114 License type: Common License Record date: 20130909 Application publication date: 19960925 Assignee: Huizhou Desay Automotive Electronics Co., Ltd. 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