DE69419739T2 - Kopierschutz für hybride digitale aufzeichnung von video auf band - Google Patents

Kopierschutz für hybride digitale aufzeichnung von video auf band

Info

Publication number
DE69419739T2
DE69419739T2 DE69419739T DE69419739T DE69419739T2 DE 69419739 T2 DE69419739 T2 DE 69419739T2 DE 69419739 T DE69419739 T DE 69419739T DE 69419739 T DE69419739 T DE 69419739T DE 69419739 T2 DE69419739 T2 DE 69419739T2
Authority
DE
Germany
Prior art keywords
copy
analog
video
digital
input
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
Application number
DE69419739T
Other languages
English (en)
Other versions
DE69419739D1 (de
Inventor
John Ryan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rovi Corp
Original Assignee
Macrovision Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=21867426&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69419739(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Macrovision Corp filed Critical Macrovision Corp
Publication of DE69419739D1 publication Critical patent/DE69419739D1/de
Application granted granted Critical
Publication of DE69419739T2 publication Critical patent/DE69419739T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H04N2005/91314—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 pulse signal inserted in blanking intervals of the video signal, e.g. pseudo-AGC pulses, pseudo-sync pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Adhesive Tapes (AREA)
  • Facsimile Transmission Control (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
DE69419739T 1993-03-18 1994-03-04 Kopierschutz für hybride digitale aufzeichnung von video auf band Expired - Lifetime DE69419739T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/032,894 US5315448A (en) 1993-03-18 1993-03-18 Copy protection for hybrid digital video tape recording and unprotected source material
PCT/US1994/002351 WO1994022266A2 (en) 1993-03-18 1994-03-04 Copy protection for hybrid digital video tape recording and unprotected source material

Publications (2)

Publication Number Publication Date
DE69419739D1 DE69419739D1 (de) 1999-09-02
DE69419739T2 true DE69419739T2 (de) 1999-12-02

Family

ID=21867426

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69419739T Expired - Lifetime DE69419739T2 (de) 1993-03-18 1994-03-04 Kopierschutz für hybride digitale aufzeichnung von video auf band

Country Status (18)

Country Link
US (1) US5315448A (de)
EP (1) EP0689751B1 (de)
JP (1) JP2895629B2 (de)
KR (1) KR100306005B1 (de)
CN (4) CN1143531C (de)
AT (1) ATE182731T1 (de)
AU (1) AU677999B2 (de)
BR (1) BR9406002A (de)
CA (1) CA2158021C (de)
DE (1) DE69419739T2 (de)
ES (1) ES2133547T3 (de)
HK (2) HK1013757A1 (de)
HU (1) HU221769B1 (de)
MY (1) MY110468A (de)
NZ (1) NZ263049A (de)
PL (1) PL173292B1 (de)
RU (1) RU2139639C1 (de)
WO (1) WO1994022266A2 (de)

Families Citing this family (142)

* Cited by examiner, † Cited by third party
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JP2895629B2 (ja) 1999-05-24
AU677999B2 (en) 1997-05-15
HK1099873A1 (en) 2007-08-24
ATE182731T1 (de) 1999-08-15
MY110468A (en) 1998-05-30
HK1013757A1 (en) 1999-09-03
CN1523882A (zh) 2004-08-25
AU6359394A (en) 1994-10-11
JPH08507912A (ja) 1996-08-20
US5315448A (en) 1994-05-24
NZ263049A (en) 1997-11-24
HU221769B1 (hu) 2003-01-28
DE69419739D1 (de) 1999-09-02
CN1921601A (zh) 2007-02-28
EP0689751B1 (de) 1999-07-28
HUT73989A (en) 1996-10-28
CN1292589C (zh) 2006-12-27
CN1143531C (zh) 2004-03-24
KR100306005B1 (ko) 2002-07-08
PL173292B1 (pl) 1998-02-27
CN1921601B (zh) 2011-04-06
CN1122177A (zh) 1996-05-08
EP0689751A1 (de) 1996-01-03
RU2139639C1 (ru) 1999-10-10
BR9406002A (pt) 1996-01-02
PL310623A1 (en) 1995-12-27
WO1994022266A3 (en) 1995-01-19
KR960701446A (ko) 1996-02-24
HU9502657D0 (en) 1995-11-28
ES2133547T3 (es) 1999-09-16
CA2158021C (en) 2003-05-13
CA2158021A1 (en) 1994-09-29
WO1994022266A2 (en) 1994-09-29
CN102025958A (zh) 2011-04-20

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