JPS57500908A - - Google Patents
Info
- Publication number
- JPS57500908A JPS57500908A JP56502319A JP50231981A JPS57500908A JP S57500908 A JPS57500908 A JP S57500908A JP 56502319 A JP56502319 A JP 56502319A JP 50231981 A JP50231981 A JP 50231981A JP S57500908 A JPS57500908 A JP S57500908A
- Authority
- JP
- Japan
- 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.)
- Pending
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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15316480A | 1980-05-27 | 1980-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57500908A true JPS57500908A (fr) | 1982-05-20 |
Family
ID=22546033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56502319A Pending JPS57500908A (fr) | 1980-05-27 | 1981-04-06 |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0052655A4 (fr) |
| JP (1) | JPS57500908A (fr) |
| WO (1) | WO1981003593A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1338158C (fr) * | 1982-07-15 | 1996-03-12 | John D. Lowry | Chiffrement et dechiffrement (brouillage et debrouillage) de signaux video |
| EP0140705B1 (fr) * | 1983-10-31 | 1992-04-08 | R F Monolithics, Inc. | Procédé et appareil pour embrouillage et désembrouillage de télévision |
| US4682223A (en) * | 1983-10-31 | 1987-07-21 | R. F. Monolithics, Inc. | Descrambler unit method and apparatus for television signal descrambling |
| US4682224A (en) * | 1983-10-31 | 1987-07-21 | R. F. Monolithics, Inc. | System, method, and apparatus for television signal scrambling and descrambling |
| EP0140704A3 (fr) * | 1983-10-31 | 1987-05-20 | R F Monolithics, Inc. | Procédé et appareil pour embrouillage et désembrouillage de télévision |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2972008A (en) * | 1956-04-23 | 1961-02-14 | Paramount Pictures Corp | Coding methods and system |
| US3936749A (en) * | 1961-06-23 | 1976-02-03 | The United States Of America As Represented By The Secretary Of The Army | Matched filter communication systems |
| US4002825A (en) * | 1973-07-25 | 1977-01-11 | Summit Systems, Inc. | System for encoding and decoding amplitude modulated signals |
| SU656239A1 (ru) * | 1975-07-28 | 1979-04-05 | Рязанский Радиотехнический Институт | Устройство дл передачи и приема телевизионных сигналов |
| JPS5931241B2 (ja) * | 1975-11-12 | 1984-08-01 | 松下電器産業株式会社 | ゴ−ストジヨキヨソウチ |
| US4060833A (en) * | 1976-04-26 | 1977-11-29 | Rca Corporation | Transducer arrangement for a surface acoustic wave device to inhibit the generation of multiple reflection signals |
| US4170757A (en) * | 1977-12-30 | 1979-10-09 | The United States Of America As Represented By The Secretary Of The Army | Method of and apparatus for transmitting clandestine radio signals |
-
1981
- 1981-04-06 JP JP56502319A patent/JPS57500908A/ja active Pending
- 1981-04-06 EP EP19810901828 patent/EP0052655A4/fr not_active Withdrawn
- 1981-04-06 WO PCT/US1981/000441 patent/WO1981003593A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP0052655A1 (fr) | 1982-06-02 |
| WO1981003593A1 (fr) | 1981-12-10 |
| EP0052655A4 (fr) | 1986-01-07 |