DE3176785D1 - Method and system for secure transmission and reception of video information particularly for television - Google Patents

Method and system for secure transmission and reception of video information particularly for television

Info

Publication number
DE3176785D1
DE3176785D1 DE8181900783T DE3176785T DE3176785D1 DE 3176785 D1 DE3176785 D1 DE 3176785D1 DE 8181900783 T DE8181900783 T DE 8181900783T DE 3176785 T DE3176785 T DE 3176785T DE 3176785 D1 DE3176785 D1 DE 3176785D1
Authority
DE
Germany
Prior art keywords
television
reception
video information
secure transmission
information particularly
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
Application number
DE8181900783T
Other languages
English (en)
Inventor
Robert S Block
John R Martin
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.)
Telease Inc
Original Assignee
Telease 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 Telease Inc filed Critical Telease Inc
Application granted granted Critical
Publication of DE3176785D1 publication Critical patent/DE3176785D1/de
Expired legal-status Critical Current

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
DE8181900783T 1980-02-25 1981-02-25 Method and system for secure transmission and reception of video information particularly for television Expired DE3176785D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12465680A 1980-02-25 1980-02-25
PCT/US1981/000227 WO1981002499A1 (en) 1980-02-25 1981-02-25 Method and system for secure transmission and reception of video information particularly for television

Publications (1)

Publication Number Publication Date
DE3176785D1 true DE3176785D1 (en) 1988-07-14

Family

ID=22416098

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181900783T Expired DE3176785D1 (en) 1980-02-25 1981-02-25 Method and system for secure transmission and reception of video information particularly for television

Country Status (9)

Country Link
EP (1) EP0046798B1 (de)
JP (1) JPH065955B2 (de)
AU (1) AU544397B2 (de)
BR (1) BR8107088A (de)
CA (1) CA1182555A (de)
DE (1) DE3176785D1 (de)
DK (1) DK158433C (de)
GB (1) GB2086181B (de)
WO (1) WO1981002499A1 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2105953B (en) * 1981-08-14 1985-05-22 Sony Corp Methods of and apparatus for coding television signals
JPS59500694A (ja) * 1982-04-23 1984-04-19 インデペンデント・ブロ−ドキヤステイング・オ−ソリテイ 信号を確実に伝送するための信号コ−ド化装置
CA1338158C (en) * 1982-07-15 1996-03-12 John D. Lowry Encryption and decryption (scrambling and unscrambling) of video signals
FR2543386B1 (fr) * 1983-03-21 1987-03-20 Telediffusion Fse Procedes et dispositifs d'embrouillage et de desembrouillage pour images de television
FR2607341A1 (fr) * 1983-03-21 1988-05-27 Telediffusion Fse Procede d'embrouillage et de desembrouillage pour images de television
WO1984004013A1 (en) * 1983-03-28 1984-10-11 Indep Broadcasting Authority Encryption of television signals
EP0123422A3 (de) * 1983-03-28 1985-04-03 Plessey Overseas Limited Einrichtung zur Signalverwürflung und Entwürflung
DE3479952D1 (en) * 1983-04-21 1989-11-02 Gen Instrument Corp Scrambling system for television video signal
US4563702A (en) * 1983-05-27 1986-01-07 M/A-Com Linkabit, Inc. Video signal scrambling and descrambling systems
FR2561478B1 (fr) * 1984-03-16 1987-06-26 Labo Electronique Physique Dispositif de dechiffrement et de decodage d'images de television codees selon le standard mac et brouillees par application aux signaux video de permutations circulaires
CA1284211C (en) * 1985-04-29 1991-05-14 Terrence Henry Pocock Cable television system selectively distributing pre-recorder video and audio messages
FR2584556B1 (fr) * 1985-07-02 1987-09-18 France Etat Procede d'embrouillage et de desembrouillage d'images de television
US4736420A (en) * 1986-09-19 1988-04-05 M/A-Com Government Systems, Inc. Video scrambling by segmenting video information lines
DE3832611C2 (de) * 1987-09-30 1998-05-14 Thomson Brandt Gmbh Verschachtelung eines Videosignals
FR2626131B1 (fr) * 1988-01-14 1990-06-22 Telediffusion Fse Procede et dispositif de permutation de lignes de television par bloc
FR2631192A1 (fr) * 1988-05-06 1989-11-10 Europ Rech Electr Lab Procede d'embrouillage d'images de television
MY108367A (en) * 1991-09-30 1996-09-30 Thomson Consumer Electronics S A Method and apparatus for secure transmisson of video signals.
US5384497A (en) * 1992-11-04 1995-01-24 At&T Corp. Low-skew signal routing in a programmable array
US10110233B2 (en) 2016-06-23 2018-10-23 Altera Corporation Methods for specifying processor architectures for programmable integrated circuits

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972008A (en) * 1956-04-23 1961-02-14 Paramount Pictures Corp Coding methods and system
JPS5754986B2 (de) * 1974-12-30 1982-11-20
CA1097794A (en) 1975-08-08 1981-03-17 Harold B. Shutterly Secure television transmission system

Also Published As

Publication number Publication date
EP0046798A4 (de) 1985-07-30
EP0046798B1 (de) 1988-06-08
DK158433B (da) 1990-05-14
DK469581A (da) 1981-10-23
BR8107088A (pt) 1982-01-05
DK158433C (da) 1990-10-22
GB2086181A (en) 1982-05-06
CA1182555A (en) 1985-02-12
AU7039581A (en) 1981-09-11
JPS57500402A (de) 1982-03-04
JPH065955B2 (ja) 1994-01-19
GB2086181B (en) 1985-04-17
WO1981002499A1 (en) 1981-09-03
AU544397B2 (en) 1985-05-23
EP0046798A1 (de) 1982-03-10

Similar Documents

Publication Publication Date Title
US4554584B1 (en) Video and audio blanking system
GB2093662B (en) Multiple signal transmission method and system particularly for television
GB2086181B (en) Method and system for secure transmission and reception of video information particularly for television
HK76186A (en) Method of and system for the transmission of data packets
GB2147769B (en) Information transmission/reception system using pushphone and information reception apparatus
DE3567345D1 (en) Method and system for reducing the flow of digital data transmitted between a television transmitter and receiver
EP0424060A3 (en) Method of coding video signals and transmission system thereof
ZA84991B (en) Data transmission system and method of operating same
PL237288A1 (en) Method of and system for providing synchronisation between a microprocessor and video signals
DE3465159D1 (en) Apparatus for, and method of, recording scrambled or coded television signals
GB2187606B (en) Television system with transmission of additional information
DE3574441D1 (en) Television picture and sound scrambler and method
IL63117A0 (en) Apparatus and method for transmission of digital information
EP0110726A3 (en) Method and system for transmitting and receiving data
DE3366621D1 (en) Method and installation for digital data transmission
DE3478657D1 (en) Method of and apparatus for decoding scrambled video signals
GB8323055D0 (en) Digital television signal processing and transmission system
DE3374639D1 (en) Method and system for data rate compression of data transmitted between at least a transmitter and a receiver of television pictures
EP0127125A3 (en) Video signal transmission system
DE3377190D1 (en) Transmission method, especially for recording and reproducing television signals
DE3479952D1 (en) Scrambling system for television video signal
GB2120897B (en) Method and system for recording video information
EP0118123A3 (en) System for the transmission and the reception of digital information signals
AU1888183A (en) Secure coding and decoding system and method for television program signals
DE3463717D1 (en) Method for transmission especially for recording and reproduction of colour television signals

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee