SE503549C2 - Kryptering med efterföljande källkodning - Google Patents

Kryptering med efterföljande källkodning

Info

Publication number
SE503549C2
SE503549C2 SE8803264A SE8803264A SE503549C2 SE 503549 C2 SE503549 C2 SE 503549C2 SE 8803264 A SE8803264 A SE 8803264A SE 8803264 A SE8803264 A SE 8803264A SE 503549 C2 SE503549 C2 SE 503549C2
Authority
SE
Sweden
Prior art keywords
encryption
blocks
coding
source coding
transform
Prior art date
Application number
SE8803264A
Other languages
English (en)
Swedish (sv)
Other versions
SE8803264D0 (sv
SE8803264L (sv
Inventor
Lars-Erik Eriksson
Robert Forchheimer
Michael Bertilsson
Jonas Wallberg
Ingemar Ingemarsson
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
Priority to SE8803264A priority Critical patent/SE503549C2/sv
Publication of SE8803264D0 publication Critical patent/SE8803264D0/xx
Priority to DE1989622166 priority patent/DE68922166T2/de
Priority to EP19890850278 priority patent/EP0359729B1/fr
Priority to SE8903694A priority patent/SE465051B/sv
Publication of SE8803264L publication Critical patent/SE8803264L/xx
Publication of SE503549C2 publication Critical patent/SE503549C2/sv

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 Of Band Width Or Redundancy In Fax (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
SE8803264A 1988-09-15 1988-09-15 Kryptering med efterföljande källkodning SE503549C2 (sv)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE8803264A SE503549C2 (sv) 1988-09-15 1988-09-15 Kryptering med efterföljande källkodning
DE1989622166 DE68922166T2 (de) 1988-09-15 1989-08-29 Chiffrierverfahren mit nachträglicher Quellenkodierung.
EP19890850278 EP0359729B1 (fr) 1988-09-15 1989-08-29 Chiffrage de code avec codage de source ultérieure
SE8903694A SE465051B (sv) 1988-09-15 1989-11-06 Foerfarande foer kryptering och kaellkodning av en informationsfoeljd som representerar roerliga bilder

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 (3)

Publication Number Publication Date
SE8803264D0 SE8803264D0 (sv) 1988-09-15
SE8803264L SE8803264L (sv) 1990-03-16
SE503549C2 true SE503549C2 (sv) 1996-07-01

Family

ID=20373342

Family Applications (2)

Application Number Title Priority Date Filing Date
SE8803264A SE503549C2 (sv) 1988-09-15 1988-09-15 Kryptering med efterföljande källkodning
SE8903694A SE465051B (sv) 1988-09-15 1989-11-06 Foerfarande foer kryptering och kaellkodning av en informationsfoeljd som representerar roerliga bilder

Family Applications After (1)

Application Number Title Priority Date Filing Date
SE8903694A SE465051B (sv) 1988-09-15 1989-11-06 Foerfarande foer kryptering och kaellkodning av en informationsfoeljd som representerar roerliga bilder

Country Status (3)

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

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW223690B (fr) * 1991-02-13 1994-05-11 Ampex
AU693432B2 (en) * 1992-09-04 1998-07-02 998358 Ontario Inc. Doing Business As Rotocode International Encryption template
CA2077576A1 (fr) * 1992-09-04 1994-03-05 Gera J. Roth Gabarit de cryptage
US6212663B1 (en) 1997-10-23 2001-04-03 Sony Corporation Apparatus and method for recovery of quantization codes 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
US6473876B1 (en) 1999-06-29 2002-10-29 Sony Corporation Method and apparatus for encoding of bitstreams using rotation
US6493842B1 (en) 1999-06-29 2002-12-10 Sony Corporation Time-varying randomization for data synchronization and implicit information transmission
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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003942A1 (fr) * 1982-04-23 1983-11-10 Independent Broadcasting Authority Codage de signaux pour une transmission sure
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
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 (fr) 1990-03-21
EP0359729B1 (fr) 1995-04-12
SE465051B (sv) 1991-07-15
SE8803264D0 (sv) 1988-09-15
DE68922166D1 (de) 1995-05-18
SE8803264L (sv) 1990-03-16
DE68922166T2 (de) 1995-08-10
EP0359729A3 (fr) 1991-11-21
SE8903694D0 (sv) 1989-11-06
SE8903694L (sv) 1989-11-06

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Legal Events

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