PT970581E - Metodo para detectar sinais de rajada de sincronizacao de cor modificadas para evitar a copia de um programa de vidro - Google Patents

Metodo para detectar sinais de rajada de sincronizacao de cor modificadas para evitar a copia de um programa de vidro

Info

Publication number
PT970581E
PT970581E PT98915157T PT98915157T PT970581E PT 970581 E PT970581 E PT 970581E PT 98915157 T PT98915157 T PT 98915157T PT 98915157 T PT98915157 T PT 98915157T PT 970581 E PT970581 E PT 970581E
Authority
PT
Portugal
Prior art keywords
video signal
modified
recorder
signal
color burst
Prior art date
Application number
PT98915157T
Other languages
English (en)
Inventor
John O Ryan
Gerow D Brill
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
Application filed by Macrovision Corp filed Critical Macrovision Corp
Publication of PT970581E publication Critical patent/PT970581E/pt

Links

Classifications

    • 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
    • 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
    • H04N2005/91371—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video color burst signal being modified

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Television Signal Processing For Recording (AREA)
  • Color Television Systems (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
PT98915157T 1997-03-21 1998-03-20 Metodo para detectar sinais de rajada de sincronizacao de cor modificadas para evitar a copia de um programa de vidro PT970581E (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4083297P 1997-03-21 1997-03-21

Publications (1)

Publication Number Publication Date
PT970581E true PT970581E (pt) 2003-06-30

Family

ID=21913216

Family Applications (1)

Application Number Title Priority Date Filing Date
PT98915157T PT970581E (pt) 1997-03-21 1998-03-20 Metodo para detectar sinais de rajada de sincronizacao de cor modificadas para evitar a copia de um programa de vidro

Country Status (13)

Country Link
EP (1) EP0970581B1 (pt)
JP (1) JP4171789B2 (pt)
KR (1) KR100531968B1 (pt)
CN (1) CN1132420C (pt)
AT (1) ATE232668T1 (pt)
AU (1) AU720847B2 (pt)
CA (1) CA2283849C (pt)
DE (1) DE69811349T2 (pt)
DK (1) DK0970581T3 (pt)
ES (1) ES2192766T3 (pt)
HK (1) HK1024368A1 (pt)
PT (1) PT970581E (pt)
WO (1) WO1998043420A1 (pt)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4626890A (en) * 1984-07-03 1986-12-02 Macrovision Method and apparatus for removing phase modulation from the color burst
KR930008167B1 (ko) * 1986-08-11 1993-08-26 매크로비젼 코포레이션 비데오 레코더의 비데오 디스에이블링 회로를 이용하여 비데오 프로그램의 복사를 방지하는 방법 및 장치
EP0824825B1 (en) * 1995-05-09 2001-10-17 Macrovision Corporation Method and apparatus for defeating effects of color burst modifications to a video signal
DK1152611T3 (da) * 1996-01-16 2003-07-21 Macrovision Corp Apparatur til at forbedre virkningerne af farvepulsmodifikationer på et videosignal

Also Published As

Publication number Publication date
CA2283849A1 (en) 1998-10-01
DK0970581T3 (da) 2003-05-19
EP0970581B1 (en) 2003-02-12
AU720847B2 (en) 2000-06-15
KR100531968B1 (ko) 2005-11-30
KR20010005575A (ko) 2001-01-15
CA2283849C (en) 2002-12-10
WO1998043420A1 (en) 1998-10-01
CN1251239A (zh) 2000-04-19
CN1132420C (zh) 2003-12-24
EP0970581A1 (en) 2000-01-12
ES2192766T3 (es) 2003-10-16
HK1024368A1 (en) 2000-10-05
DE69811349T2 (de) 2003-08-28
ATE232668T1 (de) 2003-02-15
JP2001518270A (ja) 2001-10-09
DE69811349D1 (de) 2003-03-20
AU6940798A (en) 1998-10-20
JP4171789B2 (ja) 2008-10-29

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