CH452000A - Encrypted link device to transmit messages - Google Patents

Encrypted link device to transmit messages

Info

Publication number
CH452000A
CH452000A CH722566A CH722566A CH452000A CH 452000 A CH452000 A CH 452000A CH 722566 A CH722566 A CH 722566A CH 722566 A CH722566 A CH 722566A CH 452000 A CH452000 A CH 452000A
Authority
CH
Switzerland
Prior art keywords
link device
transmit messages
encrypted link
encrypted
messages
Prior art date
Application number
CH722566A
Other languages
French (fr)
Inventor
Vasseur Jean-Pierre
Original Assignee
Csf
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 Csf filed Critical Csf
Publication of CH452000A publication Critical patent/CH452000A/en

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/44—Secrecy systems
    • H04N1/448—Rendering the image unintelligible, e.g. scrambling
    • H04N1/4486—Rendering the image unintelligible, e.g. scrambling using digital data encryption
CH722566A 1965-05-21 1966-05-18 Encrypted link device to transmit messages CH452000A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR17935A FR1444250A (en) 1965-05-21 1965-05-21 Link synchronization device

Publications (1)

Publication Number Publication Date
CH452000A true CH452000A (en) 1968-05-15

Family

ID=8579439

Family Applications (1)

Application Number Title Priority Date Filing Date
CH722566A CH452000A (en) 1965-05-21 1966-05-18 Encrypted link device to transmit messages

Country Status (4)

Country Link
CH (1) CH452000A (en)
DE (1) DE1487255A1 (en)
FR (1) FR1444250A (en)
GB (1) GB1144831A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2110468C1 (en) * 1971-03-05 1978-04-27 Siemens Ag Procedure for the transfer of information
FR2509559B1 (en) * 1981-07-10 1986-03-21 Thomson Csf METHOD FOR THE DIGITAL TRANSMISSION OF VIDEO IMAGES OF THE TELEVISION TYPE AND TRANSCEIVER THEREFOR
GB2217949B (en) * 1988-03-29 1992-08-05 Aisin Seiki Data encryption
GB2262418A (en) * 1991-10-17 1993-06-16 Jennifer Mallows Data transmission

Also Published As

Publication number Publication date
DE1487255A1 (en) 1969-02-27
GB1144831A (en) 1969-03-12
FR1444250A (en) 1966-07-01

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