CH655628B - - Google Patents
Info
- Publication number
- CH655628B CH655628B CH311381A CH311381A CH655628B CH 655628 B CH655628 B CH 655628B CH 311381 A CH311381 A CH 311381A CH 311381 A CH311381 A CH 311381A CH 655628 B CH655628 B CH 655628B
- Authority
- CH
- Switzerland
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/149,706 US4336553A (en) | 1980-05-14 | 1980-05-14 | Method of coding audio and video signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH655628B true CH655628B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1986-04-30 |
Family
ID=22531455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH311381A CH655628B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1980-05-14 | 1981-05-13 |
Country Status (13)
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4471379A (en) * | 1981-08-13 | 1984-09-11 | Focus Communications, Inc. | Codified field polarity television system |
| US4965825A (en) | 1981-11-03 | 1990-10-23 | The Personalized Mass Media Corporation | Signal processing apparatus and methods |
| US7831204B1 (en) | 1981-11-03 | 2010-11-09 | Personalized Media Communications, Llc | Signal processing apparatus and methods |
| USRE47642E1 (en) | 1981-11-03 | 2019-10-08 | Personalized Media Communications LLC | Signal processing apparatus and methods |
| JPS595790A (ja) * | 1982-07-01 | 1984-01-12 | Pioneer Electronic Corp | テレビ映像のスクランブル方法 |
| US4523228A (en) * | 1983-02-15 | 1985-06-11 | Scientific Atlanta Inc. | Sync suppression scrambling of television signals for subscription TV |
| EP0119751B1 (en) * | 1983-02-18 | 1987-09-30 | Sanyo Electric Co., Ltd. | Scrambling system of television signal |
| US4590519A (en) * | 1983-05-04 | 1986-05-20 | Regency Electronics, Inc. | Television signal scrambling/descrambling system |
| US4613901A (en) * | 1983-05-27 | 1986-09-23 | M/A-Com Linkabit, Inc. | Signal encryption and distribution system for controlling scrambling and selective remote descrambling of television signals |
| US4608456A (en) * | 1983-05-27 | 1986-08-26 | M/A-Com Linkabit, Inc. | Digital audio scrambling system with error conditioning |
| JPS59228489A (ja) * | 1983-06-09 | 1984-12-21 | Pioneer Electronic Corp | テレビ受像機のスクランブル方式 |
| JPS60130283A (ja) * | 1983-12-16 | 1985-07-11 | Matsushita Electric Ind Co Ltd | スクランブル方法 |
| US4599646A (en) * | 1984-05-18 | 1986-07-08 | D-Tec Industries, Inc. | Method and apparatus for identifying unauthorized or defective converter/decoder boxes in CATV system |
| US4815129A (en) * | 1985-01-02 | 1989-03-21 | General Instrument Corp. | Video encryption system |
| US4709266A (en) * | 1985-01-14 | 1987-11-24 | Oak Industries Inc. | Satellite scrambling communication network using geographically separated uplinks |
| JPS6232048A (ja) * | 1985-08-02 | 1987-02-12 | 帝人株式会社 | 金属薄膜磁気テープ用ポリエステルフィルム |
| JPS6276878A (ja) * | 1985-09-30 | 1987-04-08 | Toshiba Corp | 映像スクランブル信号処理装置 |
| US4688246A (en) * | 1985-12-20 | 1987-08-18 | Zenith Electronics Corporation | CATV scrambling system with compressed digital audio in synchronizing signal intervals |
| US4870682A (en) * | 1987-02-25 | 1989-09-26 | Household Data Services (Hds) | Television scrambling system |
| US4924498A (en) * | 1988-04-29 | 1990-05-08 | Scientific Atlanta, Inc. | Method and apparatus for improving video scrambling and employing split snyc pulses |
| US5142575A (en) * | 1988-04-29 | 1992-08-25 | Scientific-Atlanta, Inc. | Method and apparatus for improving video scrambling and employing split sync pulses |
| US5177787A (en) * | 1989-05-01 | 1993-01-05 | Scientific-Atlanta, Inc | Scrambler with self-calibration |
| CA2020313C (en) * | 1989-07-21 | 1996-06-11 | Ralph P. Harney | Universal decoder |
| JPH0785582B2 (ja) * | 1990-03-16 | 1995-09-13 | パイオニア株式会社 | テレビジョン信号のデスクランブル装置 |
| JPH03284087A (ja) * | 1990-03-30 | 1991-12-13 | Matsushita Electric Ind Co Ltd | ペイ・テレビ装置 |
| US5272751A (en) * | 1990-03-30 | 1993-12-21 | Matsushita Electric Industrial Co., Ltd. | Pay television |
| US5153723A (en) * | 1991-07-24 | 1992-10-06 | Zenith Electronics Corporation | HDTV audio subsystem with timing characteristics compatible with video subsystem |
| US5737417A (en) * | 1995-04-24 | 1998-04-07 | Technicolor Videocassette, Inc. | Videotape anti-copying encryption scheme |
| US5710815A (en) * | 1995-06-07 | 1998-01-20 | Vtech Communications, Ltd. | Encoder apparatus and decoder apparatus for a television signal having embedded viewer access control data |
| US6208737B1 (en) * | 1998-07-07 | 2001-03-27 | General Instruments Corporation | Method and apparatus for television signal scrambling using the replacement of synchronizing and color subcarrier signals with an alternative time base inherent in a QPSK audio subcarrier |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2510046A (en) * | 1947-04-18 | 1950-05-30 | Zenith Radio Corp | Radio-wire signaling system |
| US2705740A (en) * | 1949-12-14 | 1955-04-05 | Zenith Radio Corp | Subscription type signalling system |
| US3081376A (en) * | 1959-03-23 | 1963-03-12 | Zenith Radio Corp | Subscription television system |
| US3184537A (en) * | 1960-10-04 | 1965-05-18 | Paramount Pictures Corp | Subscription-television system employing suppression of synchronizing signals |
| GB1028025A (en) * | 1962-08-30 | 1966-05-04 | R & R Res Ltd | Improvements in or relating to television systems |
| US3485941A (en) * | 1965-04-12 | 1969-12-23 | R & R Research Ltd | Television system with modified sync signals and auxiliary timing information |
| US3530232A (en) * | 1966-06-17 | 1970-09-22 | Intern Telemeter Corp | Subscription television system |
| US3736369A (en) * | 1972-03-13 | 1973-05-29 | Theatre Vision Inc | Technique for encoding and decoding scrambled t.v. transmissions by the simultaneous transmission of the encoding and decoding signals |
| JPS5236593B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-08-09 | 1977-09-16 | ||
| DE2529728A1 (de) * | 1973-10-08 | 1977-01-20 | Standard Elektrik Lorenz Ag | Fernsehsystem mit integrierter tonuebertragung |
| CH575694A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1974-03-15 | 1976-05-14 | Oak Industries Inc | |
| US4081832A (en) * | 1976-06-08 | 1978-03-28 | Pay Television Corporation | Pay television system, method and apparatus |
| US4095258A (en) * | 1976-10-15 | 1978-06-13 | Blonder-Tongue Laboratories, Inc. | Apparatus for decoding scrambled television and similar transmissions |
| US4163252A (en) * | 1976-11-03 | 1979-07-31 | Blonder-Tongue Laboratories, Inc. | Subscription television decoder apparatus |
| US4215366A (en) * | 1977-10-19 | 1980-07-29 | Feature Film Services | Subscriber-limited reception television broadcast security encoder-decoder system |
| IL58735A (en) * | 1978-12-04 | 1982-01-31 | Oak Industries Inc | Subscription television coding system |
-
1980
- 1980-05-14 US US06/149,706 patent/US4336553A/en not_active Expired - Lifetime
-
1981
- 1981-04-28 IL IL62735A patent/IL62735A/xx not_active IP Right Cessation
- 1981-05-05 GB GB8113686A patent/GB2078051B/en not_active Expired
- 1981-05-05 CA CA000376905A patent/CA1172747A/en not_active Expired
- 1981-05-13 CH CH311381A patent/CH655628B/de unknown
- 1981-05-13 NL NL8102352A patent/NL8102352A/nl not_active Application Discontinuation
- 1981-05-13 DE DE3119014A patent/DE3119014C2/de not_active Expired
- 1981-05-13 FR FR8109502A patent/FR2482813B1/fr not_active Expired
- 1981-05-13 BR BR8102972A patent/BR8102972A/pt not_active IP Right Cessation
- 1981-05-14 JP JP7286681A patent/JPS5717289A/ja active Pending
- 1981-05-14 MX MX187312A patent/MX150240A/es unknown
- 1981-05-14 AU AU70562/81A patent/AU534857B2/en not_active Expired
- 1981-05-14 GR GR64953A patent/GR74915B/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU534857B2 (en) | 1984-02-16 |
| DE3119014A1 (de) | 1982-02-25 |
| GR74915B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1984-07-12 |
| IL62735A (en) | 1984-03-30 |
| DE3119014C2 (de) | 1983-12-22 |
| AU7056281A (en) | 1981-11-19 |
| JPS5717289A (en) | 1982-01-28 |
| IL62735A0 (en) | 1981-06-29 |
| GB2078051A (en) | 1981-12-23 |
| BR8102972A (pt) | 1982-02-02 |
| CA1172747A (en) | 1984-08-14 |
| FR2482813A1 (fr) | 1981-11-20 |
| NL8102352A (nl) | 1981-12-01 |
| GB2078051B (en) | 1984-05-23 |
| FR2482813B1 (fr) | 1985-12-06 |
| MX150240A (es) | 1984-04-04 |
| US4336553A (en) | 1982-06-22 |