FI924941A - Förfarande och system för chiffrering av en videobild - Google Patents

Förfarande och system för chiffrering av en videobild Download PDF

Info

Publication number
FI924941A
FI924941A FI924941A FI924941A FI924941A FI 924941 A FI924941 A FI 924941A FI 924941 A FI924941 A FI 924941A FI 924941 A FI924941 A FI 924941A FI 924941 A FI924941 A FI 924941A
Authority
FI
Finland
Prior art keywords
video image
image encryption
encryption
video
image
Prior art date
Application number
FI924941A
Other languages
English (en)
Finnish (fi)
Other versions
FI924941A0 (sv
FI92542B (sv
FI92542C (sv
Inventor
Ari Heikkinen
Mauri Kangas
Juha Raussi
Reino Hiltunen
Original Assignee
Salon Televisiotehdas Oy
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 Salon Televisiotehdas Oy filed Critical Salon Televisiotehdas Oy
Priority to FI924941A priority Critical patent/FI92542C/sv
Publication of FI924941A0 publication Critical patent/FI924941A0/sv
Priority to DE1993610670 priority patent/DE69310670T2/de
Priority to EP19930117130 priority patent/EP0595216B1/en
Publication of FI924941A publication Critical patent/FI924941A/sv
Publication of FI92542B publication Critical patent/FI92542B/sv
Application granted granted Critical
Publication of FI92542C publication Critical patent/FI92542C/sv

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
    • 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)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
FI924941A 1992-10-30 1992-10-30 Förfarande och system för chiffrering av en videobild FI92542C (sv)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI924941A FI92542C (sv) 1992-10-30 1992-10-30 Förfarande och system för chiffrering av en videobild
DE1993610670 DE69310670T2 (de) 1992-10-30 1993-10-22 Verfahren und System zur Verschlüsselung eines Videobildes
EP19930117130 EP0595216B1 (en) 1992-10-30 1993-10-22 Method and system for the encryption of a video picture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI924941 1992-10-30
FI924941A FI92542C (sv) 1992-10-30 1992-10-30 Förfarande och system för chiffrering av en videobild

Publications (4)

Publication Number Publication Date
FI924941A0 FI924941A0 (sv) 1992-10-30
FI924941A true FI924941A (sv) 1994-05-01
FI92542B FI92542B (sv) 1994-08-15
FI92542C FI92542C (sv) 1994-11-25

Family

ID=8536136

Family Applications (1)

Application Number Title Priority Date Filing Date
FI924941A FI92542C (sv) 1992-10-30 1992-10-30 Förfarande och system för chiffrering av en videobild

Country Status (3)

Country Link
EP (1) EP0595216B1 (sv)
DE (1) DE69310670T2 (sv)
FI (1) FI92542C (sv)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2749999B1 (fr) * 1996-06-17 1998-07-17 France Telecom Procede d'embrouillage et/ou de desembrouillage d'un signal d'image respectant la signature de signal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH682614A5 (fr) * 1990-02-21 1993-10-15 Kudelski Sa Procédé d'embrouillage et de désembrouillage d'un signal vidéo.
GB9004901D0 (en) * 1990-03-05 1990-05-02 Space Communications Sat Tel L Television scrambler
US5161188A (en) * 1991-07-19 1992-11-03 Pires H George Scrambling video by horizontal and vertical time shifting

Also Published As

Publication number Publication date
DE69310670T2 (de) 1997-11-13
FI924941A0 (sv) 1992-10-30
DE69310670D1 (de) 1997-06-19
EP0595216B1 (en) 1997-05-14
FI92542B (sv) 1994-08-15
FI92542C (sv) 1994-11-25
EP0595216A1 (en) 1994-05-04

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Legal Events

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BB Publication of examined application