DE68922166T2 - Chiffrierverfahren mit nachträglicher Quellenkodierung. - Google Patents

Chiffrierverfahren mit nachträglicher Quellenkodierung.

Info

Publication number
DE68922166T2
DE68922166T2 DE1989622166 DE68922166T DE68922166T2 DE 68922166 T2 DE68922166 T2 DE 68922166T2 DE 1989622166 DE1989622166 DE 1989622166 DE 68922166 T DE68922166 T DE 68922166T DE 68922166 T2 DE68922166 T2 DE 68922166T2
Authority
DE
Germany
Prior art keywords
encryption method
source coding
subsequent source
subsequent
coding
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 - Fee Related
Application number
DE1989622166
Other languages
English (en)
Other versions
DE68922166D1 (de
Inventor
Lars-Erik Eriksson
Robert Forchheimer
Michael Bertilsson
Jonas Wallberg
Ingemar Ingemarsson
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.)
Telia AB
Original Assignee
Telia AB
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 Telia AB filed Critical Telia AB
Application granted granted Critical
Publication of DE68922166D1 publication Critical patent/DE68922166D1/de
Publication of DE68922166T2 publication Critical patent/DE68922166T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C5/00—Ciphering apparatus or methods not provided for in the preceding groups, e.g. involving the concealment or deformation of graphic data such as designs, written or printed messages
    • 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
    • H04L9/34—Bits, or blocks of bits, of the telegraphic message being interchanged in time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Facsimile Transmission Control (AREA)
  • Storage Device Security (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
DE1989622166 1988-09-15 1989-08-29 Chiffrierverfahren mit nachträglicher Quellenkodierung. Expired - Fee Related DE68922166T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8803264A SE503549C2 (sv) 1988-09-15 1988-09-15 Kryptering med efterföljande källkodning

Publications (2)

Publication Number Publication Date
DE68922166D1 DE68922166D1 (de) 1995-05-18
DE68922166T2 true DE68922166T2 (de) 1995-08-10

Family

ID=20373342

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1989622166 Expired - Fee Related DE68922166T2 (de) 1988-09-15 1989-08-29 Chiffrierverfahren mit nachträglicher Quellenkodierung.

Country Status (3)

Country Link
EP (1) EP0359729B1 (de)
DE (1) DE68922166T2 (de)
SE (2) SE503549C2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW223690B (de) * 1991-02-13 1994-05-11 Ampex
JPH09509750A (ja) * 1992-09-04 1997-09-30 ９９８３５８ オンタリオ インコーポレーテッド ドゥーイング ビジネス アズ ロトコード インターナショナル 暗号文字盤
CA2077576A1 (en) * 1992-09-04 1994-03-05 Gera J. Roth Encryption template
US6311297B1 (en) 1997-10-23 2001-10-30 Sony Corporation Apparatus and method for mapping an image to blocks to provide for robust error recovery in a lossy transmission environment
FR2771581B1 (fr) 1997-11-26 1999-12-17 Thomson Multimedia Sa Procede d'embrouillage et procede de desembrouillage de donnees video numeriques et dispositifs mettant en oeuvre les procedes
US6535148B1 (en) 1999-02-12 2003-03-18 Sony Corporation Method and apparatus for truncated decoding
US6505299B1 (en) * 1999-03-01 2003-01-07 Sharp Laboratories Of America, Inc. Digital image scrambling for image coding systems
US6493842B1 (en) 1999-06-29 2002-12-10 Sony Corporation Time-varying randomization for data synchronization and implicit information transmission
US6473876B1 (en) * 1999-06-29 2002-10-29 Sony Corporation Method and apparatus for encoding of bitstreams using rotation
US6389562B1 (en) 1999-06-29 2002-05-14 Sony Corporation Source code shuffling to provide for robust error recovery
DE19932769A1 (de) * 1999-07-14 2001-03-08 Roellgen Bernd Während der Laufzeit veränderbare kryptographische Methode
US6539517B1 (en) 1999-11-09 2003-03-25 Sony Corporation Data transformation for explicit transmission of control information
FR2805066B1 (fr) * 2000-02-15 2003-12-05 Sagem Procede de codage d'une image detectee d'une caracteristique biometrique d'une personne, procede d'authentification securise pour une autorisation d'acces en faisant application, dispositifs de mise en oeuvre correspondants
US7372975B2 (en) * 2004-12-06 2008-05-13 Mitsubishi Electric Research Laboratory, Inc. Method for secure background modeling in images
US7742597B2 (en) * 2007-12-28 2010-06-22 Lewis James M Exclusive encryption system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0105897A1 (de) * 1982-04-23 1984-04-25 Independent Broadcasting Authority Signalkodierung für geheimübertragung
JPS59111441A (ja) * 1982-12-17 1984-06-27 Sony Corp 音声信号の秘話方式
US4575754A (en) * 1983-01-06 1986-03-11 Rca Corporation Video scrambler system
JPS62226785A (ja) * 1986-03-28 1987-10-05 Hitachi Ltd デイジタル画像デ−タの暗号化方式
IL83549A (en) * 1987-08-16 1992-08-18 Yossi Matias Video scrambling apparatus and method based on space filling curves
DE3731532A1 (de) * 1987-09-18 1989-03-30 Siemens Ag Verfahren zur uebertragung von verschluesselten bildsignalen

Also Published As

Publication number Publication date
EP0359729A2 (de) 1990-03-21
SE465051B (sv) 1991-07-15
SE503549C2 (sv) 1996-07-01
EP0359729A3 (de) 1991-11-21
SE8903694L (sv) 1989-11-06
SE8803264L (sv) 1990-03-16
SE8903694D0 (sv) 1989-11-06
EP0359729B1 (de) 1995-04-12
DE68922166D1 (de) 1995-05-18
SE8803264D0 (sv) 1988-09-15

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Legal Events

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