DE3484115D1 - Videosignaluebertragungssystem. - Google Patents
Videosignaluebertragungssystem.Info
- Publication number
- DE3484115D1 DE3484115D1 DE8484105891T DE3484115T DE3484115D1 DE 3484115 D1 DE3484115 D1 DE 3484115D1 DE 8484105891 T DE8484105891 T DE 8484105891T DE 3484115 T DE3484115 T DE 3484115T DE 3484115 D1 DE3484115 D1 DE 3484115D1
- Authority
- DE
- Germany
- Prior art keywords
- video signal
- signal transmission
- transmission system
- video
- transmission
- 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
- 230000008054 signal transmission Effects 0.000 title 1
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
-
- 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
- H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
-
- 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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58090939A JPS59216378A (ja) | 1983-05-24 | 1983-05-24 | テレビ信号用クランプ回路 |
JP58090940A JPS59216389A (ja) | 1983-05-24 | 1983-05-24 | 映像信号伝送方式 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3484115D1 true DE3484115D1 (de) | 1991-03-28 |
Family
ID=26432346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8484105891T Expired - Fee Related DE3484115D1 (de) | 1983-05-24 | 1984-05-23 | Videosignaluebertragungssystem. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4599648A (de) |
EP (1) | EP0127125B1 (de) |
CA (1) | CA1224264A (de) |
DE (1) | DE3484115D1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6276880A (ja) * | 1985-09-30 | 1987-04-08 | Toshiba Corp | 映像スクランブル方式 |
US4888799A (en) * | 1986-01-03 | 1989-12-19 | Scientific Atlanta, Inc. | Scrambling of signals by inversion |
CA2015392A1 (en) * | 1989-05-01 | 1990-11-01 | William T. Murphy | Scrambler with self calibration |
US5177787A (en) * | 1989-05-01 | 1993-01-05 | Scientific-Atlanta, Inc | Scrambler with self-calibration |
US5029210A (en) * | 1990-01-29 | 1991-07-02 | Compfax Corp. | Cooperative communication system |
KR0152270B1 (ko) * | 1990-04-30 | 1998-10-15 | 구자홍 | 유료 티브이 시스템의 합성 영상신호 암호화 해독 처리 시스템 |
US5179446A (en) * | 1991-10-22 | 1993-01-12 | Samsung Electronics Co., Ltd. | Radio transmitting and receiving circuits of a video camera having a detached view finder |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3440338A (en) * | 1963-11-15 | 1969-04-22 | Teleglobe Pay Tv System Inc | Subscription television system |
US3801732A (en) * | 1971-11-22 | 1974-04-02 | J Reeves | Method and apparatus for scrambled television |
US4022972A (en) * | 1975-05-13 | 1977-05-10 | Teleglobe Pay Tv System Inc. | Transient suppression and grey level coincidence in a subscription television system |
GB1602119A (en) * | 1977-11-18 | 1981-11-04 | Shiu Hung Cheung | Pay-tv system |
US4222068A (en) * | 1978-11-02 | 1980-09-09 | American Television And Communications Corporation | Subscription television apparatus and methods |
US4257065A (en) * | 1979-12-17 | 1981-03-17 | Pay Television Corporation | Video clamp and inverter circuit |
US4340906A (en) * | 1980-05-14 | 1982-07-20 | Oak Industries Inc. | Video signal coding by video signal polarity reversal on the basis of brightness level comparison |
US4389671A (en) * | 1980-09-29 | 1983-06-21 | Harris Corporation | Digitally-controlled analog encrypton |
US4514761A (en) * | 1982-08-23 | 1985-04-30 | Zenith Electronics Corporation | Data encryption technique for subscription television system |
-
1984
- 1984-05-22 US US06/612,835 patent/US4599648A/en not_active Expired - Fee Related
- 1984-05-23 CA CA000454893A patent/CA1224264A/en not_active Expired
- 1984-05-23 DE DE8484105891T patent/DE3484115D1/de not_active Expired - Fee Related
- 1984-05-23 EP EP84105891A patent/EP0127125B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0127125A3 (en) | 1986-07-16 |
US4599648A (en) | 1986-07-08 |
EP0127125B1 (de) | 1991-02-20 |
CA1224264A (en) | 1987-07-14 |
EP0127125A2 (de) | 1984-12-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3483056D1 (de) | Fernsehsignaluebertragungssystem. | |
NL191818C (nl) | Signaaltransmissiestelsel. | |
DE3482568D1 (de) | Digitales uebertragungssystem. | |
DE3486108T2 (de) | Videoanzeigesystem. | |
DE3382220D1 (de) | Fernsehuebertragungssystem. | |
DE3480765D1 (de) | Videospiel-system. | |
DK163625C (da) | Digitaldatatransmissionsanlaeg | |
FI852489L (fi) | Foerbaettrat system foer tagande kaernan fraon en bild representerande signal. | |
DE3481474D1 (de) | Verwuerfelte fernsehsignale. | |
DE3381375D1 (de) | Fernsehuebertragungssystem. | |
GB2150793B (en) | Signal transmission system | |
ES538185A0 (es) | Sistema de transmision de relacion variable-continuamente | |
DE3687234D1 (de) | Video-uebertragungs-systeme. | |
NO165010C (no) | Fjernsynstransmisjonssystem. | |
DE3485159D1 (de) | Lageuebermittlungssystem. | |
DE3483089D1 (de) | Radiouebertragungssystem. | |
DK162675C (da) | Digitaltransmissionsanlaeg | |
DE3853385T2 (de) | Fernsehübertragungssystem. | |
IT8819445A0 (it) | Sistema di trasmissione di segnali di televisione. | |
DE3483125D1 (de) | Sicheres fernsehuebertragungssystem. | |
GB8400496D0 (en) | Signal transmission system | |
DE3484115D1 (de) | Videosignaluebertragungssystem. | |
FI842526A0 (fi) | Signalvaeg foer videoanordning. | |
NO830357L (no) | Asynkront data-overfoeringssystem. | |
DE3585584D1 (de) | Digitales videosignalverarbeitungssystem. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |