HK1013757A1 - Copy protection for hybrid digital video tape recording and unprotected source material - Google Patents

Copy protection for hybrid digital video tape recording and unprotected source material

Info

Publication number
HK1013757A1
HK1013757A1 HK98114983A HK98114983A HK1013757A1 HK 1013757 A1 HK1013757 A1 HK 1013757A1 HK 98114983 A HK98114983 A HK 98114983A HK 98114983 A HK98114983 A HK 98114983A HK 1013757 A1 HK1013757 A1 HK 1013757A1
Authority
HK
Hong Kong
Prior art keywords
copy
analog
digital
video
input
Prior art date
Application number
HK98114983A
Other languages
English (en)
Inventor
John O Ryan
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=HK1013757(A1) "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 HK1013757A1 publication Critical patent/HK1013757A1/xx

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)
HK98114983A 1993-03-18 1998-12-23 Copy protection for hybrid digital video tape recording and unprotected source material HK1013757A1 (en)

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 (1)

Publication Number Publication Date
HK1013757A1 true HK1013757A1 (en) 1999-09-03

Family

ID=21867426

Family Applications (2)

Application Number Title Priority Date Filing Date
HK98114983A HK1013757A1 (en) 1993-03-18 1998-12-23 Copy protection for hybrid digital video tape recording and unprotected source material
HK07105530.9A HK1099873A1 (en) 1993-03-18 2007-05-25 An apparatus and a method of providing a serial copy protection scheme for a digital video signal

Family Applications After (1)

Application Number Title Priority Date Filing Date
HK07105530.9A HK1099873A1 (en) 1993-03-18 2007-05-25 An apparatus and a method of providing a serial copy protection scheme for a digital video signal

Country Status (18)

Country Link
US (1) US5315448A (de)
EP (1) EP0689751B1 (de)
JP (1) JP2895629B2 (de)
KR (1) KR100306005B1 (de)
CN (4) CN102025958A (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)

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HUT73989A (en) 1996-10-28
WO1994022266A2 (en) 1994-09-29
KR100306005B1 (ko) 2002-07-08
CN1921601A (zh) 2007-02-28
EP0689751B1 (de) 1999-07-28
AU677999B2 (en) 1997-05-15
US5315448A (en) 1994-05-24
BR9406002A (pt) 1996-01-02
DE69419739D1 (de) 1999-09-02
ES2133547T3 (es) 1999-09-16
JPH08507912A (ja) 1996-08-20
PL310623A1 (en) 1995-12-27
CN1292589C (zh) 2006-12-27
CN1143531C (zh) 2004-03-24
HU9502657D0 (en) 1995-11-28
RU2139639C1 (ru) 1999-10-10
JP2895629B2 (ja) 1999-05-24
KR960701446A (ko) 1996-02-24
ATE182731T1 (de) 1999-08-15
CN1122177A (zh) 1996-05-08
HK1099873A1 (en) 2007-08-24
DE69419739T2 (de) 1999-12-02
CA2158021C (en) 2003-05-13
AU6359394A (en) 1994-10-11
PL173292B1 (pl) 1998-02-27
CN1523882A (zh) 2004-08-25
CN102025958A (zh) 2011-04-20
CA2158021A1 (en) 1994-09-29
HU221769B1 (hu) 2003-01-28
NZ263049A (en) 1997-11-24
WO1994022266A3 (en) 1995-01-19
EP0689751A1 (de) 1996-01-03
CN1921601B (zh) 2011-04-06
MY110468A (en) 1998-05-30

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