DE3685621D1 - Fernsehsignal-verschluesselungs- und datenuebertragungsanordnung. - Google Patents
Fernsehsignal-verschluesselungs- und datenuebertragungsanordnung.Info
- Publication number
- DE3685621D1 DE3685621D1 DE8686902964T DE3685621T DE3685621D1 DE 3685621 D1 DE3685621 D1 DE 3685621D1 DE 8686902964 T DE8686902964 T DE 8686902964T DE 3685621 T DE3685621 T DE 3685621T DE 3685621 D1 DE3685621 D1 DE 3685621D1
- Authority
- DE
- Germany
- Prior art keywords
- data transfer
- television signal
- transfer arrangement
- signal encryption
- encryption
- 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
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
- H04N7/171—Systems operating in the amplitude domain of the television signal
- H04N7/1713—Systems operating in the amplitude domain of the television signal by modifying synchronisation signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Systems (AREA)
- Television Receiver Circuits (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/711,947 US4706283A (en) | 1985-03-15 | 1985-03-15 | Television signal scrambling system |
US06/712,949 US4706284A (en) | 1985-03-15 | 1985-03-15 | Television signal data transmission system |
PCT/US1986/000548 WO1986005647A1 (en) | 1985-03-15 | 1986-03-14 | Television signal scrambling and data transmission system |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3685621D1 true DE3685621D1 (de) | 1992-07-16 |
DE3685621T2 DE3685621T2 (de) | 1993-01-28 |
Family
ID=27108735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686902964T Expired - Fee Related DE3685621T2 (de) | 1985-03-15 | 1986-03-14 | Fernsehsignal-verschluesselungs- und datenuebertragungsanordnung. |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0215946B1 (de) |
DE (1) | DE3685621T2 (de) |
FI (1) | FI84126C (de) |
WO (1) | WO1986005647A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2038913B1 (es) * | 1991-10-02 | 1996-05-16 | Iglesias Angel Sa | Sistema de codificacion simultanea de varias señales de television y decodificacion de las mismas en radiofrecuencia. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2983781A (en) * | 1955-01-12 | 1961-05-09 | Skiatron Elect & Tele | Television |
US4333108A (en) * | 1980-03-10 | 1982-06-01 | Ampex Corporation | Apparatus and method for transmitting a pulse width modulated audio signal on a video signal |
US4467353A (en) * | 1982-03-25 | 1984-08-21 | Zenith Electronics Corporation | Television signal scrambling system and method |
-
1986
- 1986-03-14 EP EP19860902964 patent/EP0215946B1/de not_active Expired
- 1986-03-14 DE DE8686902964T patent/DE3685621T2/de not_active Expired - Fee Related
- 1986-03-14 WO PCT/US1986/000548 patent/WO1986005647A1/en active IP Right Grant
- 1986-11-14 FI FI864640A patent/FI84126C/fi not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI864640A (fi) | 1986-11-14 |
WO1986005647A1 (en) | 1986-09-25 |
FI84126C (fi) | 1991-10-10 |
EP0215946A1 (de) | 1987-04-01 |
EP0215946B1 (de) | 1992-06-10 |
FI864640A0 (fi) | 1986-11-14 |
DE3685621T2 (de) | 1993-01-28 |
FI84126B (fi) | 1991-06-28 |
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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 |