FR2264448B1 - - Google Patents
Info
- Publication number
- FR2264448B1 FR2264448B1 FR7508105A FR7508105A FR2264448B1 FR 2264448 B1 FR2264448 B1 FR 2264448B1 FR 7508105 A FR7508105 A FR 7508105A FR 7508105 A FR7508105 A FR 7508105A FR 2264448 B1 FR2264448 B1 FR 2264448B1
- Authority
- FR
- France
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US45149074A | 1974-03-15 | 1974-03-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2264448A1 FR2264448A1 (el) | 1975-10-10 |
| FR2264448B1 true FR2264448B1 (el) | 1979-03-30 |
Family
ID=23792432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7508105A Expired FR2264448B1 (el) | 1974-03-15 | 1975-03-14 |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE826727A (el) |
| CH (1) | CH575694A5 (el) |
| DE (2) | DE2510348C2 (el) |
| FI (1) | FI67284C (el) |
| FR (1) | FR2264448B1 (el) |
| GB (1) | GB1500743A (el) |
| NL (1) | NL7502883A (el) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH575694A5 (el) * | 1974-03-15 | 1976-05-14 | Oak Industries Inc | |
| FR2385281A2 (fr) * | 1974-03-15 | 1978-10-20 | Oak Industries Inc | Dispositif de decodage de signaux de television |
| US4112464A (en) * | 1977-05-11 | 1978-09-05 | Oak Industries Inc. | Subscription TV decoder logic system |
| US4145717A (en) * | 1977-05-11 | 1979-03-20 | Oak Industries Inc. | Subscription TV audio carrier recovery system |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3081376A (en) * | 1959-03-23 | 1963-03-12 | Zenith Radio Corp | Subscription television system |
| US3333198A (en) * | 1965-12-29 | 1967-07-25 | Ampli Vision Corp | Television converter for catv system |
| US3729576A (en) * | 1971-02-08 | 1973-04-24 | Optical Sys Corp | Encoding and decoding system for catv |
| CH575694A5 (el) * | 1974-03-15 | 1976-05-14 | Oak Industries Inc |
-
1975
- 1975-03-06 CH CH286775A patent/CH575694A5/xx not_active IP Right Cessation
- 1975-03-10 DE DE19752510348 patent/DE2510348C2/de not_active Expired
- 1975-03-10 FI FI750683A patent/FI67284C/fi not_active IP Right Cessation
- 1975-03-11 NL NL7502883A patent/NL7502883A/xx not_active Application Discontinuation
- 1975-03-14 BE BE154371A patent/BE826727A/xx not_active IP Right Cessation
- 1975-03-14 FR FR7508105A patent/FR2264448B1/fr not_active Expired
- 1975-09-09 GB GB3714675A patent/GB1500743A/en not_active Expired
-
1977
- 1977-03-17 DE DE19772711756 patent/DE2711756C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1500743A (en) | 1978-02-08 |
| DE2711756C2 (de) | 1984-03-01 |
| DE2711756A1 (de) | 1978-09-21 |
| DE2510348C2 (de) | 1983-11-03 |
| NL7502883A (nl) | 1975-09-17 |
| FI750683A (el) | 1975-09-16 |
| FR2264448A1 (el) | 1975-10-10 |
| FI67284B (fi) | 1984-10-31 |
| BE826727A (fr) | 1975-06-30 |
| DE2510348A1 (de) | 1975-09-18 |
| FI67284C (fi) | 1985-02-11 |
| CH575694A5 (el) | 1976-05-14 |