DK469581A - Fremgangsmaade og anlaeg til sikret udsendelse og modtagelse af videoinformation isaer til fjernsyn - Google Patents

Fremgangsmaade og anlaeg til sikret udsendelse og modtagelse af videoinformation isaer til fjernsyn

Info

Publication number: DK469581A
Authority: DK; Denmark
Prior art keywords: video; video signal; parts; sequence; reorganized
Prior art date: 1980-02-25

Application number

DK469581A

Other languages

English (en)

Other versions

DK158433B (da

DK158433C (da

Inventor

R S Block

J R Martin

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.)

1980-02-25

Filing date

1981-10-23

Publication date

1981-10-23

1981-10-23 Application filed by Telease Inc filed Critical Telease Inc

1981-10-23 Publication of DK469581A publication Critical patent/DK469581A/da

1990-05-14 Publication of DK158433B publication Critical patent/DK158433B/da

1990-10-22 Application granted granted Critical

1990-10-22 Publication of DK158433C publication Critical patent/DK158433C/da

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)
Television Systems (AREA)
Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Compression Or Coding Systems Of Tv Signals (AREA)

DK469581A 1980-02-25 1981-10-23 Fremgangsmaade og anlaeg til sikret udsendelse og modtagelse af videoinformation, isaer til fjernsyn DK158433C (da)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
US12465680A	1980-02-25	1980-02-25
US12465680		1980-02-25
US8100227		1981-02-25
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 (3)

Publication Number	Publication Date
DK469581A true DK469581A (da)	1981-10-23
DK158433B DK158433B (da)	1990-05-14
DK158433C DK158433C (da)	1990-10-22

Family

ID=22416098

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK469581A DK158433C (da)	1980-02-25	1981-10-23	Fremgangsmaade og anlaeg til sikret udsendelse og modtagelse af videoinformation, isaer til fjernsyn

Country Status (9)

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

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
EP0105897A1 (en) *	1982-04-23	1984-04-25	Independent Broadcasting Authority	Signal coding for secure transmission
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
EP0123422A3 (en) *	1983-03-28	1985-04-03	Plessey Overseas Limited	Apparatus for scrambling and unscrambling signals
US4757531A (en) *	1983-03-28	1988-07-12	Independent Broadcasting Authority	Encryption of television signals
EP0123505B1 (en) *	1983-04-21	1989-09-27	General Instrument Corporation	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 (da) *	1974-12-30	1982-11-20
CA1097794A (en) *	1975-08-08	1981-03-17	Harold B. Shutterly	Secure television transmission system

1981
- 1981-02-24 CA CA000371615A patent/CA1182555A/en not_active Expired
- 1981-02-25 EP EP81900783A patent/EP0046798B1/en not_active Expired
- 1981-02-25 BR BR8107088A patent/BR8107088A/pt unknown
- 1981-02-25 JP JP56501071A patent/JPH065955B2/ja not_active Expired - Lifetime
- 1981-02-25 AU AU70395/81A patent/AU544397B2/en not_active Ceased
- 1981-02-25 DE DE8181900783T patent/DE3176785D1/de not_active Expired
- 1981-02-25 WO PCT/US1981/000227 patent/WO1981002499A1/en active IP Right Grant
- 1981-02-25 GB GB8132049A patent/GB2086181B/en not_active Expired
- 1981-10-23 DK DK469581A patent/DK158433C/da not_active IP Right Cessation

Also Published As

Publication number	Publication date
GB2086181A (en)	1982-05-06
AU7039581A (en)	1981-09-11
DK158433B (da)	1990-05-14
EP0046798A1 (en)	1982-03-10
BR8107088A (pt)	1982-01-05
EP0046798B1 (en)	1988-06-08
JPH065955B2 (ja)	1994-01-19
AU544397B2 (en)	1985-05-23
EP0046798A4 (en)	1985-07-30
DK158433C (da)	1990-10-22
DE3176785D1 (en)	1988-07-14
GB2086181B (en)	1985-04-17
JPS57500402A (da)	1982-03-04
WO1981002499A1 (en)	1981-09-03
CA1182555A (en)	1985-02-12

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Legal Events

Date	Code	Title	Description
1991-10-21	PBP	Patent lapsed