DE68927708D1 - Method and device for concealing and unveiling composite video signals - Google Patents

Method and device for concealing and unveiling composite video signals

Info

Publication number
DE68927708D1
DE68927708D1 DE68927708T DE68927708T DE68927708D1 DE 68927708 D1 DE68927708 D1 DE 68927708D1 DE 68927708 T DE68927708 T DE 68927708T DE 68927708 T DE68927708 T DE 68927708T DE 68927708 D1 DE68927708 D1 DE 68927708D1
Authority
DE
Germany
Prior art keywords
unveiling
concealing
video signals
composite video
composite
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
DE68927708T
Other languages
German (de)
Other versions
DE68927708T2 (en
Inventor
Patrick Daniel
Francis Renard
Jean-Claude Guillon
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.)
EUROP RECH ELECTR LAB
Original Assignee
EUROP RECH ELECTR LAB
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 EUROP RECH ELECTR LAB filed Critical EUROP RECH ELECTR LAB
Priority claimed from EP89403070A external-priority patent/EP0426923B1/en
Application granted granted Critical
Publication of DE68927708D1 publication Critical patent/DE68927708D1/en
Publication of DE68927708T2 publication Critical patent/DE68927708T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

DE1989627708 1989-11-08 1989-11-08 Method and device for concealing and unveiling composite video signals Expired - Fee Related DE68927708T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89403070A EP0426923B1 (en) 1988-05-06 1989-11-08 Compound video signal scrambling and unscrambling method and apparatus

Publications (2)

Publication Number Publication Date
DE68927708D1 true DE68927708D1 (en) 1997-03-06
DE68927708T2 DE68927708T2 (en) 1997-05-15

Family

ID=8203003

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1989627708 Expired - Fee Related DE68927708T2 (en) 1989-11-08 1989-11-08 Method and device for concealing and unveiling composite video signals

Country Status (2)

Country Link
AT (1) ATE148289T1 (en)
DE (1) DE68927708T2 (en)

Also Published As

Publication number Publication date
DE68927708T2 (en) 1997-05-15
ATE148289T1 (en) 1997-02-15

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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