DK99080A - PROCEDURE FOR CHANGED FAX TRANSMISSION DATA - Google Patents

PROCEDURE FOR CHANGED FAX TRANSMISSION DATA

Info

Publication number
DK99080A
DK99080A DK99080A DK99080A DK99080A DK 99080 A DK99080 A DK 99080A DK 99080 A DK99080 A DK 99080A DK 99080 A DK99080 A DK 99080A DK 99080 A DK99080 A DK 99080A
Authority
DK
Denmark
Prior art keywords
procedure
transmission data
fax transmission
changed
changed fax
Prior art date
Application number
DK99080A
Other languages
Danish (da)
Inventor
W Rauch
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of DK99080A publication Critical patent/DK99080A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
    • 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
DK99080A 1979-03-08 1980-03-07 PROCEDURE FOR CHANGED FAX TRANSMISSION DATA DK99080A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792908979 DE2908979C3 (en) 1979-03-08 1979-03-08 Process for encrypted transmission of facsimile data

Publications (1)

Publication Number Publication Date
DK99080A true DK99080A (en) 1980-09-09

Family

ID=6064767

Family Applications (1)

Application Number Title Priority Date Filing Date
DK99080A DK99080A (en) 1979-03-08 1980-03-07 PROCEDURE FOR CHANGED FAX TRANSMISSION DATA

Country Status (3)

Country Link
EP (1) EP0015534B1 (en)
DE (1) DE2908979C3 (en)
DK (1) DK99080A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2510497B2 (en) * 1985-10-07 1996-06-26 キヤノン株式会社 Data communication system
JP3190056B2 (en) * 1991-03-26 2001-07-16 キヤノン株式会社 Image transmission device, image encoding device, image decoding device, and methods thereof
DE4439032C2 (en) * 1994-11-02 1996-09-26 Andreas Jung Method and device for encrypted data transmission
DE29501988U1 (en) * 1995-02-08 1995-04-27 Ruland Werner Ortwin Dr Med Pr Security arrangement for fax machines

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2690475A (en) * 1953-04-17 1954-09-28 Ii Edward R Gaul Synchronous teletypewriter mixer
DE978042C (en) * 1959-05-08 1976-10-21 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Method and device for encrypting and decrypting information to be transmitted via facsimile devices
NL272974A (en) * 1960-12-29
DE978013C (en) * 1961-02-20 1975-03-27 Fa. Dr.-Ing. Rudolf Hell. 2300 Kiel Method and device for establishing the synchronization of the key devices in encrypted facsimile transmissions
GB1429469A (en) * 1961-07-19 1976-03-24 Hell Rudolf Method for subsequently setting data receivers in a contrinuous transmission of encoded data transmitted in binary code form
NL6906145A (en) * 1968-05-15 1969-11-18
DE978033C (en) * 1970-05-28 1976-04-22 Fa. Dr.-Ing. Rudolf Hell, 2300 Kiel Method for encrypting and decrypting halftone images in image telegraphy
CH539989A (en) * 1971-04-19 1973-07-31 Gretag Ag Method and device for encrypted message transmission
GB1393920A (en) * 1972-12-12 1975-05-14 Ibm Electric digital data processing systems
DE2517073C1 (en) * 1975-04-18 1978-02-09 Siemens Ag Transmission system working with two-way traffic
DE2706421C2 (en) * 1977-02-16 1979-03-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Procedure for setting ciphertext generators in encryption devices

Also Published As

Publication number Publication date
DE2908979A1 (en) 1980-09-11
DE2908979C3 (en) 1982-03-18
EP0015534A1 (en) 1980-09-17
EP0015534B1 (en) 1983-05-18
DE2908979B2 (en) 1981-07-16

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