DK0409211T3 - Universaldekoder - Google Patents

Universaldekoder

Info

Publication number
DK0409211T3
DK0409211T3 DK90113788.5T DK90113788T DK0409211T3 DK 0409211 T3 DK0409211 T3 DK 0409211T3 DK 90113788 T DK90113788 T DK 90113788T DK 0409211 T3 DK0409211 T3 DK 0409211T3
Authority
DK
Denmark
Prior art keywords
universal decoder
decoder
universal
Prior art date
Application number
DK90113788.5T
Other languages
English (en)
Inventor
Ralph P Harney
Michael L Hightower
Anthony J Wechselberger
Original Assignee
Tv Com Tech Inc
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 Tv Com Tech Inc filed Critical Tv Com Tech Inc
Application granted granted Critical
Publication of DK0409211T3 publication Critical patent/DK0409211T3/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/171—Systems operating in the amplitude domain of the television signal
    • H04N7/1713—Systems operating in the amplitude domain of the television signal by modifying synchronisation signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/171—Systems operating in the amplitude domain of the television signal
    • H04N7/1716—Systems operating in the amplitude domain of the television signal by inverting the polarity of active picture signal portions

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Synchronizing For Television (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Details Of Television Scanning (AREA)
  • Semiconductor Lasers (AREA)
DK90113788.5T 1989-07-21 1990-07-18 Universaldekoder DK0409211T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38289989A 1989-07-21 1989-07-21

Publications (1)

Publication Number Publication Date
DK0409211T3 true DK0409211T3 (da) 1995-11-20

Family

ID=23510887

Family Applications (1)

Application Number Title Priority Date Filing Date
DK90113788.5T DK0409211T3 (da) 1989-07-21 1990-07-18 Universaldekoder

Country Status (14)

Country Link
EP (1) EP0409211B1 (da)
JP (1) JP2635202B2 (da)
AR (1) AR244481A1 (da)
AT (1) ATE124833T1 (da)
AU (1) AU621762B2 (da)
BR (1) BR9003532A (da)
CA (1) CA2020313C (da)
DE (1) DE69020654T2 (da)
DK (1) DK0409211T3 (da)
ES (1) ES2077612T3 (da)
GR (1) GR3017056T3 (da)
IL (1) IL94988A0 (da)
NO (1) NO179060C (da)
PL (1) PL163971B1 (da)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4222068A (en) * 1978-11-02 1980-09-09 American Television And Communications Corporation Subscription television apparatus and methods
US4338628A (en) * 1979-12-19 1982-07-06 Dynacom International, Inc. Scrambled video communication system
US4336553A (en) * 1980-05-14 1982-06-22 Oak Industries Method of coding audio and video signals
US4965825A (en) * 1981-11-03 1990-10-23 The Personalized Mass Media Corporation Signal processing apparatus and methods
JPS60103789A (ja) * 1983-11-10 1985-06-08 Sanyo Electric Co Ltd テレビジヨン信号のスクランブル方式
US4571615A (en) * 1983-06-10 1986-02-18 General Instrument Corporation Timing generator for sync suppressed television signals
US4815129A (en) * 1985-01-02 1989-03-21 General Instrument Corp. Video encryption system
JPS6260383A (ja) * 1985-09-10 1987-03-17 Matsushita Electric Ind Co Ltd 映像信号処理装置
JPS63122388A (ja) * 1986-11-12 1988-05-26 Hitachi Ltd 同期再生回路
US4928309A (en) * 1989-03-31 1990-05-22 General Instrument Corporation Method and apparatus for descrambling a television signal

Also Published As

Publication number Publication date
PL286151A1 (en) 1992-01-27
EP0409211B1 (en) 1995-07-05
JP2635202B2 (ja) 1997-07-30
CA2020313A1 (en) 1991-01-22
DE69020654T2 (de) 1995-11-30
EP0409211A2 (en) 1991-01-23
EP0409211A3 (en) 1992-06-03
GR3017056T3 (en) 1995-11-30
NO179060B (no) 1996-04-15
AR244481A1 (es) 1993-10-29
IL94988A0 (en) 1991-06-10
AU621762B2 (en) 1992-03-19
CA2020313C (en) 1996-06-11
PL163971B1 (pl) 1994-06-30
NO903252L (no) 1991-01-22
BR9003532A (pt) 1991-08-27
ATE124833T1 (de) 1995-07-15
AU5890390A (en) 1991-01-24
JPH03101577A (ja) 1991-04-26
NO903252D0 (no) 1990-07-20
DE69020654D1 (de) 1995-08-10
NO179060C (no) 1996-08-28
ES2077612T3 (es) 1995-12-01

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