GR82329B - - Google Patents
Info
- Publication number
- GR82329B GR82329B GR60551A GR790160551A GR82329B GR 82329 B GR82329 B GR 82329B GR 60551 A GR60551 A GR 60551A GR 790160551 A GR790160551 A GR 790160551A GR 82329 B GR82329 B GR 82329B
- Authority
- GR
- Greece
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
- H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/084—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the horizontal blanking interval only
- H04N7/085—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the horizontal blanking interval only the inserted signal being digital
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US96594078A | 1978-12-04 | 1978-12-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GR82329B true GR82329B (el) | 1984-12-13 |
Family
ID=25510704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GR60551A GR82329B (el) | 1978-12-04 | 1979-11-20 |
Country Status (12)
Country | Link |
---|---|
JP (2) | JPS5588481A (el) |
AU (1) | AU526049B2 (el) |
BR (1) | BR7907803A (el) |
CA (1) | CA1150818A (el) |
CH (1) | CH661398A5 (el) |
DE (1) | DE2947943C2 (el) |
FR (1) | FR2443778B1 (el) |
GB (1) | GB2038137B (el) |
GR (1) | GR82329B (el) |
IL (1) | IL58735A (el) |
MX (1) | MX147755A (el) |
NL (1) | NL188137C (el) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4336553A (en) * | 1980-05-14 | 1982-06-22 | Oak Industries | Method of coding audio and video signals |
US4353088A (en) * | 1980-05-14 | 1982-10-05 | Oak Industries, Inc. | Coding and decoding system for video and audio signals |
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 |
US4621285A (en) * | 1980-12-10 | 1986-11-04 | Jerrold Division, General Instrument Corporation | Protected television signal distribution system |
CA1338158C (en) * | 1982-07-15 | 1996-03-12 | John D. Lowry | Encryption and decryption (scrambling and unscrambling) of video signals |
JPS59152786A (ja) * | 1983-02-18 | 1984-08-31 | Sanyo Electric Co Ltd | Catv放送におけるスクランブル方式 |
DE3466636D1 (en) * | 1983-02-18 | 1987-11-05 | Sanyo Electric Co | Scrambling system of television signal |
DE3479952D1 (en) * | 1983-04-21 | 1989-11-02 | Gen Instrument Corp | Scrambling system for television video signal |
US4594609A (en) * | 1983-06-30 | 1986-06-10 | Viewstar Inc. | Scrambling system for television video signal |
EP0133190A1 (en) * | 1983-08-01 | 1985-02-20 | Payview Limited | Encoding and decoding of a television signal |
AU560508B2 (en) * | 1984-02-15 | 1987-04-09 | Matsushita Electric Industrial Co., Ltd. | Pay tv delta encoded sound signal processing apparatus |
DE3432653C1 (de) * | 1984-09-05 | 1986-01-16 | Westdeutscher Rundfunk, Anstalt des öffentlichen Rechts, 5000 Köln | Verfahren zum Übertragen von Fersehprogrammen an berechtigte Teilnehmer |
FR2572612B1 (fr) * | 1984-10-31 | 1986-12-26 | Cgv Comp Gen Videotech | Interface entre decodeur video et recepteur de television |
US4815129A (en) * | 1985-01-02 | 1989-03-21 | General Instrument Corp. | Video encryption system |
DE3638554A1 (de) * | 1986-11-12 | 1988-05-26 | Siemens Ag | Verfahren und anordnung zum verschluesseln von digitalen videosignalen |
GB2216359B (en) * | 1988-03-18 | 1992-05-20 | Marconi Gec Ltd | Synchronisation |
AU6013394A (en) * | 1993-01-15 | 1994-08-15 | Nauchno-Proizvodstvennaya Firma 'elektronika Ltd.' | Method of relaying data via teevision channels and a system for carrying out same |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3184537A (en) * | 1960-10-04 | 1965-05-18 | Paramount Pictures Corp | Subscription-television system employing suppression of synchronizing signals |
FR1287695A (fr) * | 1960-10-04 | 1962-03-16 | Paramount Pictures Corp | Systèmes de télévision payante |
US3485941A (en) * | 1965-04-12 | 1969-12-23 | R & R Research Ltd | Television system with modified sync signals and auxiliary timing information |
NL7016628A (el) * | 1970-11-13 | 1972-05-16 | ||
JPS4924530A (el) * | 1972-06-30 | 1974-03-05 | ||
JPS5236593B2 (el) * | 1973-08-09 | 1977-09-16 | ||
US3919462A (en) * | 1973-08-15 | 1975-11-11 | System Dev Corp | Method and apparatus for scrambling and unscrambling communication signals |
JPS5120623A (ja) * | 1974-08-14 | 1976-02-19 | Matsushita Electric Ind Co Ltd | Shingodensohoshiki |
JPS5169927A (ja) * | 1974-12-13 | 1976-06-17 | Fujitsu Ltd | Terebijonfukugoeizoshingohoshiki |
FR2313825A1 (fr) * | 1975-06-06 | 1976-12-31 | Telediffusion Fse | Systeme de diffusion de donnees |
US4095258A (en) * | 1976-10-15 | 1978-06-13 | Blonder-Tongue Laboratories, Inc. | Apparatus for decoding scrambled television and similar transmissions |
JPS53113427A (en) * | 1977-03-15 | 1978-10-03 | Matsushita Electric Ind Co Ltd | Sampling clock reproducer |
-
1979
- 1979-11-16 IL IL58735A patent/IL58735A/xx unknown
- 1979-11-20 CA CA000340211A patent/CA1150818A/en not_active Expired
- 1979-11-20 GR GR60551A patent/GR82329B/el unknown
- 1979-11-22 AU AU53097/79A patent/AU526049B2/en not_active Expired
- 1979-11-26 NL NLAANVRAGE7908569,A patent/NL188137C/xx not_active IP Right Cessation
- 1979-11-27 GB GB7940978A patent/GB2038137B/en not_active Expired
- 1979-11-28 DE DE2947943A patent/DE2947943C2/de not_active Expired
- 1979-11-29 CH CH10621/79A patent/CH661398A5/de not_active IP Right Cessation
- 1979-11-30 BR BR7907803A patent/BR7907803A/pt unknown
- 1979-12-03 FR FR7929682A patent/FR2443778B1/fr not_active Expired
- 1979-12-04 MX MX180309A patent/MX147755A/es unknown
- 1979-12-04 JP JP15732979A patent/JPS5588481A/ja active Pending
-
1988
- 1988-01-18 JP JP1988004588U patent/JPS63131287U/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
CH661398A5 (de) | 1987-07-15 |
IL58735A0 (en) | 1980-02-29 |
JPS63131287U (el) | 1988-08-26 |
MX147755A (es) | 1983-01-10 |
FR2443778A1 (fr) | 1980-07-04 |
CA1150818A (en) | 1983-07-26 |
BR7907803A (pt) | 1980-07-29 |
GB2038137B (en) | 1983-04-13 |
AU526049B2 (en) | 1982-12-16 |
DE2947943A1 (de) | 1980-06-26 |
FR2443778B1 (fr) | 1986-04-11 |
IL58735A (en) | 1982-01-31 |
AU5309779A (en) | 1980-06-12 |
NL188137B (nl) | 1991-11-01 |
JPS5588481A (en) | 1980-07-04 |
NL7908569A (nl) | 1980-06-06 |
DE2947943C2 (de) | 1985-04-18 |
GB2038137A (en) | 1980-07-16 |
NL188137C (nl) | 1992-04-01 |