KR0136458B1 - 디지탈 자기 기록재생 시스템의 복사 방지장치 - Google Patents
디지탈 자기 기록재생 시스템의 복사 방지장치Info
- Publication number
- KR0136458B1 KR0136458B1 KR1019940033336A KR19940033336A KR0136458B1 KR 0136458 B1 KR0136458 B1 KR 0136458B1 KR 1019940033336 A KR1019940033336 A KR 1019940033336A KR 19940033336 A KR19940033336 A KR 19940033336A KR 0136458 B1 KR0136458 B1 KR 0136458B1
- Authority
- KR
- South Korea
- Prior art keywords
- marker
- copy protection
- unit
- cpf
- copy
- 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.)
- Expired - Lifetime
Links
- 239000003550 marker Substances 0.000 claims abstract description 77
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002789 length control Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
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- 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
- G11B20/10—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
- G11B20/00086—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 (5)
- 입력되는 데이타중의 암호화된 CPF(Copy Protection Function Information)를 분리하는 CPF분리부와,암호화 키가 저장되어 있는 암호화 키 저장부와,상기 암호화 키 저장부에 저장된 암호화 키를 이용하여 상기 CPF분리부에서 분리된 CPF를 해독하는 CPF해독부와,상기 CPF해독부의 출력을 분석하여 프로그램 공급업자가 원하는 복사방지기능이 어느 종류의 복사방지기능인지를 판단하는 CPF분석부와,상기 CPF분석부에서 분석된 복사방지기능을 선택하는 제 1 기능 선택부를 포함하여 구성됨을 특징으로 하는 디지탈 자기 기록재생 시스템의 복사 방지장치.
- 제 1 항에 있어서,복사불가를 나타내는 복사방지마커(No Copy Marker)를 암호화하는 마커 암호화부와,상기 마커 암호화부에서 암호화된 복사방지마커를 비트 스트림에 삽입하는 마커삽입부가 더 추가됨을 특징으로 하는 디지탈 자기기록재생시스템의 복사방지장치.
- 제 2 항에 있어서,테이프 재생시 기록시 암호화디어 기록된 복사방지마커를 분리하는 마커 분리부와,상기 암호화 키 저장부에 저장되어 있는 암호화 키를 이용하여 복사방지마커를 해독하는 마커 해독부와,상기 마커 해독부의 출력으로 부터 복사방지마커를 인식하여 재생되는 신호가 어느 복사방지기능에 해당되는 신호인지를 판단하는 마커 분석부와,상기 마커 분리부 및 마커 분석부의 분석결과에 따라 기록된 신호가 어느 복사방지기능에 해당되는가를 선택하는 제 2 기능 선택부와,상기 마커 분석부에서 1세대 복사마커(First Generation Copy Marker)가 검출되면 1세대 복사마커를 복사방지마커로 대체하는 마커 대체부가 더 구비됨을 특징으로 하는 디지탈 자기 기록재생 시스템의 복사 방지장치.
- 제 2 항 또는 제 3 항에 있어서,상기 제 1 기능 선택부와 마커 암호화부 사이에 데이타를 스크램블링하는 스크램블러가 구성되며, TV출력단에 상기 스크램블러에 의해 스크램블링된 데이타를 디스크램블링하는 디스크램블러가 더 구성됨을 특징으로 하는 디지탈 자기 기록재생 시스템의 복사 방지장치.
- 제 2 항 또는 제 3 항에 있어서,상기 CPF와 복사방지마커와 1세대 복사마커는 GA비트스트림의 전송 프라이비트 데이타 필드에 삽입됨을 특징으로 하는 디지탈 자기 기록재생 시스템의 복사 방지장치.
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940033336A KR0136458B1 (ko) | 1994-12-08 | 1994-12-08 | 디지탈 자기 기록재생 시스템의 복사 방지장치 |
US08/566,000 US5689559A (en) | 1994-12-08 | 1995-12-01 | Copy prevention method and apparatus of a digital magnetic recording/reproducing system |
EP95308674A EP0716544B1 (en) | 1994-12-08 | 1995-12-01 | Copy prevention method and apparatus of a digital magnetic recording/reproduction system |
DE69526310T DE69526310T2 (de) | 1994-12-08 | 1995-12-01 | Verfahren und Anlage zur Verhinderung von Kopien für digitales magnetisches Aufnahme-/Wiedergabesystem |
JP07318398A JP3105777B2 (ja) | 1994-12-08 | 1995-12-06 | ディジタル磁気記録再生システムの複写防止方法及び装置 |
CN95121501A 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 |
US09/094,575 USRE37052E1 (en) | 1994-12-08 | 1998-06-12 | Copy prevention method and apparatus of a digital recording/reproducing system employing a marker including copy protection information and code data for descrambling |
US09/097,162 USRE36919E (en) | 1994-12-08 | 1998-06-12 | Method and apparatus for communicating scrambled digital data |
US11/826,682 USRE43993E1 (en) | 1994-12-08 | 2007-07-17 | Method and apparatus for scrambling and/or descrambling digital video data and digital audio data using control data |
US11/826,680 USRE44068E1 (en) | 1994-12-08 | 2007-07-17 | Method and apparatus for descrambling digital video data and digital audio data using control data |
US12/318,746 USRE44106E1 (en) | 1994-12-08 | 2009-01-07 | Copy prevention method and apparatus of a digital recording/reproducing system |
US12/318,745 USRE44121E1 (en) | 1994-12-08 | 2009-01-07 | Copy prevention method and apparatus of a digital recording/reproducing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940033336A KR0136458B1 (ko) | 1994-12-08 | 1994-12-08 | 디지탈 자기 기록재생 시스템의 복사 방지장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960025595A KR960025595A (ko) | 1996-07-20 |
KR0136458B1 true KR0136458B1 (ko) | 1998-05-15 |
Family
ID=19400751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940033336A Expired - Lifetime KR0136458B1 (ko) | 1994-12-08 | 1994-12-08 | 디지탈 자기 기록재생 시스템의 복사 방지장치 |
Country Status (6)
Country | Link |
---|---|
US (7) | US5689559A (ko) |
EP (1) | EP0716544B1 (ko) |
JP (1) | JP3105777B2 (ko) |
KR (1) | KR0136458B1 (ko) |
CN (1) | CN1074888C (ko) |
DE (1) | DE69526310T2 (ko) |
Cited By (1)
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---|---|---|---|---|
KR100575817B1 (ko) * | 1998-12-31 | 2006-08-31 | 엘지전자 주식회사 | 디지탈데이터의복사방지장치 |
Families Citing this family (117)
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US7089212B2 (en) | 1992-12-15 | 2006-08-08 | Sl Patent Holdings Llc | System and method for controlling access to protected information |
US6266654B1 (en) | 1992-12-15 | 2001-07-24 | Softlock.Com, Inc. | Method for tracking software lineage |
US7831516B2 (en) | 1992-12-15 | 2010-11-09 | Sl Patent Holdings Llc | System and method for redistributing and licensing access to protected information among a plurality of devices |
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US6560349B1 (en) | 1994-10-21 | 2003-05-06 | Digimarc Corporation | Audio monitoring using steganographic information |
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JPH09297798A (ja) * | 1996-05-08 | 1997-11-18 | Matsushita Electric Ind Co Ltd | マルチメディア機器のコピー防止装置 |
MY121267A (en) | 1996-09-05 | 2006-01-28 | Sony Corp | Digital recording apparatus and copyright protection method thereof |
JP3941178B2 (ja) | 1996-09-05 | 2007-07-04 | ソニー株式会社 | 記録媒体、デジタル記録機器、及び制御用ic |
US7221853B1 (en) * | 1996-09-05 | 2007-05-22 | Sony Corporation | Digital recording apparatus and copyright protection method thereof |
JPH1093914A (ja) * | 1996-09-18 | 1998-04-10 | Sony Corp | データ伝送方法、データ送信装置、データ受信装置のパラメータ設定方法、データ受信装置、データ伝送システム、再生方法、及び再生装置 |
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CN1482542A (zh) * | 1997-01-27 | 2004-03-17 | �ʼҷ����ֵ�������˾ | 传递内容信息和与其相关的附加信息的方法和系统 |
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KR0186210B1 (ko) | 1995-11-10 | 1999-04-15 | 구자홍 | 디지탈 데이터의 저작권 보호와 변속 재생을 위한 자기 기록 테이프의 기록방법 |
US5790664A (en) | 1996-02-26 | 1998-08-04 | Network Engineering Software, Inc. | Automated system for management of licensed software |
US5925127A (en) | 1997-04-09 | 1999-07-20 | Microsoft Corporation | Method and system for monitoring the use of rented software |
EP0970585A2 (en) | 1998-01-23 | 2000-01-12 | Koninklijke Philips Electronics N.V. | Conditional access |
US6009401A (en) | 1998-04-06 | 1999-12-28 | Preview Systems, Inc. | Relicensing of electronically purchased software |
US7069250B2 (en) | 2001-10-15 | 2006-06-27 | Payformance Corporation | Check based online payment and verification system and method |
DE20219124U1 (de) | 2002-12-10 | 2003-04-17 | TRW Automotive Safety Systems GmbH, 63743 Aschaffenburg | Kontrollsystem für Rastverbindungen |
-
1994
- 1994-12-08 KR KR1019940033336A patent/KR0136458B1/ko not_active Expired - Lifetime
-
1995
- 1995-12-01 EP EP95308674A patent/EP0716544B1/en not_active Expired - Lifetime
- 1995-12-01 DE DE69526310T patent/DE69526310T2/de not_active Expired - Lifetime
- 1995-12-01 US US08/566,000 patent/US5689559A/en not_active Ceased
- 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
- 1998-06-12 US US09/094,575 patent/USRE37052E1/en not_active Expired - Lifetime
- 1998-06-12 US US09/097,162 patent/USRE36919E/en not_active Expired - Lifetime
-
2007
- 2007-07-17 US US11/826,682 patent/USRE43993E1/en not_active Expired - Lifetime
- 2007-07-17 US US11/826,680 patent/USRE44068E1/en not_active Expired - Lifetime
-
2009
- 2009-01-07 US US12/318,746 patent/USRE44106E1/en not_active Expired - Lifetime
- 2009-01-07 US US12/318,745 patent/USRE44121E1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100575817B1 (ko) * | 1998-12-31 | 2006-08-31 | 엘지전자 주식회사 | 디지탈데이터의복사방지장치 |
Also Published As
Publication number | Publication date |
---|---|
EP0716544A3 (en) | 1997-06-18 |
EP0716544A2 (en) | 1996-06-12 |
US5689559A (en) | 1997-11-18 |
USRE36919E (en) | 2000-10-17 |
CN1131796A (zh) | 1996-09-25 |
JP3105777B2 (ja) | 2000-11-06 |
DE69526310D1 (de) | 2002-05-16 |
USRE44106E1 (en) | 2013-03-26 |
EP0716544B1 (en) | 2002-04-10 |
CN1074888C (zh) | 2001-11-14 |
KR960025595A (ko) | 1996-07-20 |
USRE43993E1 (en) | 2013-02-12 |
USRE44068E1 (en) | 2013-03-12 |
JPH08237596A (ja) | 1996-09-13 |
USRE37052E1 (en) | 2001-02-13 |
DE69526310T2 (de) | 2002-10-02 |
USRE44121E1 (en) | 2013-04-02 |
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