DK379284D0 - Fremgangsmaade og udstyr til sloering og afsloering af et fjernsynsbilede - Google Patents

Fremgangsmaade og udstyr til sloering og afsloering af et fjernsynsbilede

Info

Publication number
DK379284D0
DK379284D0 DK379284A DK379284A DK379284D0 DK 379284 D0 DK379284 D0 DK 379284D0 DK 379284 A DK379284 A DK 379284A DK 379284 A DK379284 A DK 379284A DK 379284 D0 DK379284 D0 DK 379284D0
Authority
DK
Denmark
Prior art keywords
segments
pair
dividing
signal
reception
Prior art date
Application number
DK379284A
Other languages
English (en)
Other versions
DK379284A (da
DK169090B1 (da
Inventor
Christian Jean Francoi Gautier
Original Assignee
Telediffusion Fse
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 Telediffusion Fse filed Critical Telediffusion Fse
Publication of DK379284D0 publication Critical patent/DK379284D0/da
Publication of DK379284A publication Critical patent/DK379284A/da
Application granted granted Critical
Publication of DK169090B1 publication Critical patent/DK169090B1/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
    • H04N7/169—Systems operating in the time domain of the television signal
    • H04N7/1696—Systems operating in the time domain of the television signal by changing or reversing the order of active picture signal portions

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Systems (AREA)
  • Stereophonic System (AREA)
  • Studio Circuits (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Silicon Polymers (AREA)
  • Buffer Packaging (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
DK379284A 1983-03-21 1984-08-06 Fremgangsmåde og udstyr til kodning og dekodning af et fjernsynsbillede samt system hvor udstyret anvendes DK169090B1 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8305076 1983-03-21
FR8305076A FR2543386B1 (fr) 1983-03-21 1983-03-21 Procedes et dispositifs d'embrouillage et de desembrouillage pour images de television

Publications (3)

Publication Number Publication Date
DK379284D0 true DK379284D0 (da) 1984-08-06
DK379284A DK379284A (da) 1986-02-07
DK169090B1 DK169090B1 (da) 1994-08-08

Family

ID=9287308

Family Applications (1)

Application Number Title Priority Date Filing Date
DK379284A DK169090B1 (da) 1983-03-21 1984-08-06 Fremgangsmåde og udstyr til kodning og dekodning af et fjernsynsbillede samt system hvor udstyret anvendes

Country Status (7)

Country Link
US (2) US4633310A (da)
EP (1) EP0119945B1 (da)
AT (1) ATE27756T1 (da)
DE (1) DE3464188D1 (da)
DK (1) DK169090B1 (da)
FR (1) FR2543386B1 (da)
NO (1) NO165940C (da)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2543386B1 (fr) * 1983-03-21 1987-03-20 Telediffusion Fse Procedes et dispositifs d'embrouillage et de desembrouillage pour images de television
FR2575891B1 (fr) * 1985-01-08 1987-02-20 Labo Electronique Physique Dispositif de decodage et de dechiffrement de signaux ayant subi un codage de type mac et un chiffrement par permutation circulaire autour d'un ou de deux points de coupure, et dispositif de codage et de chiffrement fonctionnant de facon similaire
US4723282A (en) * 1985-01-08 1988-02-02 U.S. Philips Corporation Method and apparatus of decoding and deciphering a rotated video signal
BE901468A (fr) * 1985-01-09 1985-05-02 Belge Radio Television Procede de codage et de decodage d'informations et appareil pour sa mise en oeuvre.
FR2584556B1 (fr) * 1985-07-02 1987-09-18 France Etat Procede d'embrouillage et de desembrouillage d'images de television
US4964162A (en) * 1985-09-09 1990-10-16 Trw Inc. Secure television signal encoding and decoding system
US4827510A (en) * 1986-02-24 1989-05-02 Trw Inc. Minimization of amplitude gaps in a line-spin scrambled video signal
DE3822345C1 (en) * 1988-07-01 1989-10-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De Method of improving coding security
US5249229A (en) * 1989-04-04 1993-09-28 Laboratoire Europeen De Recherches Electroniques Avancees Societe En Nom Collectif Device and method for generating control signals
FR2645384B1 (fr) * 1989-04-04 1995-09-01 Europ Rech Electr Lab Dispositif et procede de generation de signaux de controle
NL194657C (nl) * 1989-08-04 2002-10-04 Samsung Electronics Co Ltd Kanaal+ decoderschakelketen voor videocassetteregistratie-inrichtingen.
KR930004823B1 (ko) * 1990-04-14 1993-06-08 삼성전자 주식회사 텔레비젼 신호의 스크램블링 및 디스크램블링 회로
CA2084453A1 (en) * 1991-12-06 1993-06-07 Stephen S. Walker Method and apparatus for tagging video frames
US5455860A (en) * 1992-04-17 1995-10-03 Matsushita Electric Industrial Co., Ltd. Scramble codec
JP3372611B2 (ja) * 1993-10-18 2003-02-04 キヤノン株式会社 映像伝送システム、映像処理装置及び映像処理方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1097794A (en) * 1975-08-08 1981-03-17 Harold B. Shutterly Secure television transmission system
GB1602119A (en) * 1977-11-18 1981-11-04 Shiu Hung Cheung Pay-tv system
FR2431809A1 (fr) * 1978-07-20 1980-02-15 Telediffusion Fse Procedes et dispositifs de brouillage et de debrouillage pour images de television
US4266243A (en) * 1979-04-25 1981-05-05 Westinghouse Electric Corp. Scrambling system for television sound signals
CA1182555A (en) * 1980-02-25 1985-02-12 Robert S. Block Method and system for secure transmission and reception of video information, particularly for television
US4389671A (en) * 1980-09-29 1983-06-21 Harris Corporation Digitally-controlled analog encrypton
US4405942A (en) * 1981-02-25 1983-09-20 Telease, Inc. Method and system for secure transmission and reception of video information, particularly for television
US4600942A (en) * 1982-07-29 1986-07-15 Telease, Inc. Secure coding and decoding system and method for television program signals
FR2533099A1 (fr) * 1982-09-14 1984-03-16 Radiotechnique Procede de brouillage d'images de television et dispositif de dechiffrage d'images ainsi brouillees
FR2543386B1 (fr) * 1983-03-21 1987-03-20 Telediffusion Fse Procedes et dispositifs d'embrouillage et de desembrouillage pour images de television

Also Published As

Publication number Publication date
EP0119945A1 (fr) 1984-09-26
EP0119945B1 (fr) 1987-06-10
FR2543386B1 (fr) 1987-03-20
NO843412L (no) 1986-02-28
US4731837A (en) 1988-03-15
ATE27756T1 (de) 1987-06-15
FR2543386A1 (fr) 1984-09-28
NO165940B (no) 1991-01-21
DK379284A (da) 1986-02-07
NO165940C (no) 1991-05-02
US4633310A (en) 1986-12-30
DK169090B1 (da) 1994-08-08
DE3464188D1 (en) 1987-07-16

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