FI924940A0 - Förfarande och system för chiffrering av en videobild - Google Patents

Förfarande och system för chiffrering av en videobild

Info

Publication number
FI924940A0
FI924940A0 FI924940A FI924940A FI924940A0 FI 924940 A0 FI924940 A0 FI 924940A0 FI 924940 A FI924940 A FI 924940A FI 924940 A FI924940 A FI 924940A FI 924940 A0 FI924940 A0 FI 924940A0
Authority
FI
Finland
Prior art keywords
video image
encryption method
image encryption
video
image
Prior art date
Application number
FI924940A
Other languages
English (en)
Finnish (fi)
Other versions
FI92541B (sv
FI924940A (sv
FI92541C (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 FI924940A priority Critical patent/FI92541C/sv
Publication of FI924940A0 publication Critical patent/FI924940A0/sv
Priority to DE1993611671 priority patent/DE69311671T2/de
Priority to EP19930117129 priority patent/EP0595215B1/en
Publication of FI924940A publication Critical patent/FI924940A/sv
Publication of FI92541B publication Critical patent/FI92541B/sv
Application granted granted Critical
Publication of FI92541C publication Critical patent/FI92541C/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)
FI924940A 1992-10-30 1992-10-30 Förfarande och system för chiffrering av en videobild FI92541C (sv)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI924940A FI92541C (sv) 1992-10-30 1992-10-30 Förfarande och system för chiffrering av en videobild
DE1993611671 DE69311671T2 (de) 1992-10-30 1993-10-22 Vorrichtung und Verfahren zur Verschlüsselung eines Videobildes
EP19930117129 EP0595215B1 (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
FI924940A FI92541C (sv) 1992-10-30 1992-10-30 Förfarande och system för chiffrering av en videobild
FI924940 1992-10-30

Publications (4)

Publication Number Publication Date
FI924940A0 true FI924940A0 (sv) 1992-10-30
FI924940A FI924940A (sv) 1994-05-01
FI92541B FI92541B (sv) 1994-08-15
FI92541C FI92541C (sv) 1994-11-25

Family

ID=8536135

Family Applications (1)

Application Number Title Priority Date Filing Date
FI924940A FI92541C (sv) 1992-10-30 1992-10-30 Förfarande och system för chiffrering av en videobild

Country Status (3)

Country Link
EP (1) EP0595215B1 (sv)
DE (1) DE69311671T2 (sv)
FI (1) FI92541C (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7006257B1 (en) * 1999-11-19 2006-02-28 Canon Kabushiki Kaisha Image processing apparatus, image processing method, and storage medium
FR2818075B1 (fr) * 2000-12-13 2003-02-07 Telediffusion De France Tdf Procede de diffusion de signaux d'image electronique en trame embrouillee

Family Cites Families (2)

* 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

Also Published As

Publication number Publication date
DE69311671T2 (de) 1997-11-27
FI92541B (sv) 1994-08-15
FI924940A (sv) 1994-05-01
EP0595215A1 (en) 1994-05-04
DE69311671D1 (de) 1997-07-24
FI92541C (sv) 1994-11-25
EP0595215B1 (en) 1997-06-18

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Legal Events

Date Code Title Description
BB Publication of examined application