JPS56103582A - Process system of video signal - Google Patents
Process system of video signalInfo
- Publication number
- JPS56103582A JPS56103582A JP17310479A JP17310479A JPS56103582A JP S56103582 A JPS56103582 A JP S56103582A JP 17310479 A JP17310479 A JP 17310479A JP 17310479 A JP17310479 A JP 17310479A JP S56103582 A JPS56103582 A JP S56103582A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- switch
- synchronous
- video signal
- output
- 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.)
- Granted
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 (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17310479A JPS56103582A (en) | 1979-12-29 | 1979-12-29 | Process system of video signal |
US06/220,782 US4390899A (en) | 1979-12-29 | 1980-12-29 | Television signal processing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17310479A JPS56103582A (en) | 1979-12-29 | 1979-12-29 | Process system of video signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56103582A true JPS56103582A (en) | 1981-08-18 |
JPS625507B2 JPS625507B2 (ja) | 1987-02-05 |
Family
ID=15954239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17310479A Granted JPS56103582A (en) | 1979-12-29 | 1979-12-29 | Process system of video signal |
Country Status (2)
Country | Link |
---|---|
US (1) | US4390899A (ja) |
JP (1) | JPS56103582A (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4542407A (en) * | 1983-06-10 | 1985-09-17 | North American Philips Corporation | Method and apparatus for scrambling and descrambling television programs |
US5142575A (en) * | 1988-04-29 | 1992-08-25 | Scientific-Atlanta, Inc. | Method and apparatus for improving video scrambling and employing split sync pulses |
US5606612A (en) * | 1994-07-25 | 1997-02-25 | General Instrument Corporation, Jerrold Communications Division | Method and apparatus for television signal scrambling using a line expansion technique |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2755333A (en) * | 1950-03-28 | 1956-07-17 | Zenith Radio Corp | Subscription television system |
US3439113A (en) * | 1963-11-15 | 1969-04-15 | Teleglobe Pay Tv System Inc | Subscription television communication system |
US3485941A (en) * | 1965-04-12 | 1969-12-23 | R & R Research Ltd | Television system with modified sync signals and auxiliary timing information |
US4095258A (en) * | 1976-10-15 | 1978-06-13 | Blonder-Tongue Laboratories, Inc. | Apparatus for decoding scrambled television and similar transmissions |
-
1979
- 1979-12-29 JP JP17310479A patent/JPS56103582A/ja active Granted
-
1980
- 1980-12-29 US US06/220,782 patent/US4390899A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US4390899A (en) | 1983-06-28 |
JPS625507B2 (ja) | 1987-02-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5564477A (en) | Television receiver | |
JPS5539444A (en) | Scramble/descramble system for catv broadcast | |
JPS56103582A (en) | Process system of video signal | |
GB1470090A (en) | Circuit arrangement for synchronizing a television receiver | |
JPS5246709A (en) | Signal receiving equipment | |
EP0287053A3 (en) | Method and circuit arrangement for the digital tuning of a control frequency | |
ES8202230A1 (es) | Perfeccionamientos en receptores de television en color para elaborar una senal de television en color compuesta | |
JPS5617583A (en) | Television picture receiver | |
JPS55130275A (en) | Television camera device | |
JPS54150917A (en) | Pal synchronous signal generating system | |
JPS5662484A (en) | Synchronizing separation circuit | |
JPS55125780A (en) | Time axis correction unit | |
JPS572168A (en) | Generating system of synchronous signal | |
JPS51147105A (en) | Auto-tuning receiver | |
JPS54109478A (en) | Detection of corona discharge of fly-back transformer | |
JPS5575382A (en) | Video signal process method | |
JPS5552687A (en) | Synchronous signal generating device | |
JPS5240016A (en) | Synchronizing system for picture signal electric transmission | |
JPS5652978A (en) | Skew generating position detection circuit | |
JPS5720072A (en) | Television receiver | |
JPS5318910A (en) | Ghost reducing device | |
JPS52112222A (en) | Horizontal afc circuit | |
JPS52144221A (en) | Ghost delection circuit system | |
JPS57103419A (en) | Notch rejecting filter | |
JPS567576A (en) | Television audio receiver |