SE9100986A - - Google Patents
Info
- Publication number
- SE9100986A SE9100986A SE9100986A SE9100986A SE9100986A SE 9100986 A SE9100986 A SE 9100986A SE 9100986 A SE9100986 A SE 9100986A SE 9100986 A SE9100986 A SE 9100986A SE 9100986 A SE9100986 A SE 9100986A
- Authority
- SE
- Sweden
- Prior art keywords
- signal
- transmitter
- receivers
- signals according
- subscribed
- Prior art date
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
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9100986A SE466727B (sv) | 1991-04-04 | 1991-04-04 | Tv-signaloeverfoerande betal-tv-system |
PCT/SE1992/000148 WO1992017984A1 (en) | 1991-04-04 | 1992-03-10 | Tv-signal transmission pay-tv-system |
AU13477/92A AU1347792A (en) | 1991-04-04 | 1992-03-10 | Tv-signal transmission pay-tv-system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9100986A SE466727B (sv) | 1991-04-04 | 1991-04-04 | Tv-signaloeverfoerande betal-tv-system |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9100986D0 SE9100986D0 (sv) | 1991-04-04 |
SE466727B SE466727B (sv) | 1992-03-23 |
SE9100986A true SE9100986A (xx) | 1992-03-30 |
Family
ID=20382350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9100986A SE466727B (sv) | 1991-04-04 | 1991-04-04 | Tv-signaloeverfoerande betal-tv-system |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU1347792A (xx) |
SE (1) | SE466727B (xx) |
WO (1) | WO1992017984A1 (xx) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2541841A1 (fr) * | 1983-02-25 | 1984-08-31 | Radiotechnique | Dispositif de dechiffrement d'images de television brouillees par application aux signaux video de permutations circulaires |
US4642688A (en) * | 1983-06-24 | 1987-02-10 | Scientific Atlanta, Inc. | Method and apparatus for creating encrypted and decrypted television signals |
-
1991
- 1991-04-04 SE SE9100986A patent/SE466727B/sv not_active IP Right Cessation
-
1992
- 1992-03-10 AU AU13477/92A patent/AU1347792A/en not_active Abandoned
- 1992-03-10 WO PCT/SE1992/000148 patent/WO1992017984A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
SE466727B (sv) | 1992-03-23 |
SE9100986D0 (sv) | 1991-04-04 |
AU1347792A (en) | 1992-11-02 |
WO1992017984A1 (en) | 1992-10-15 |
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