JPS4842620A - - Google Patents
Info
- Publication number
- JPS4842620A JPS4842620A JP47095829A JP9582972A JPS4842620A JP S4842620 A JPS4842620 A JP S4842620A JP 47095829 A JP47095829 A JP 47095829A JP 9582972 A JP9582972 A JP 9582972A JP S4842620 A JPS4842620 A JP S4842620A
- Authority
- JP
- Japan
- 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.)
- Pending
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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18447471A | 1971-09-28 | 1971-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4842620A true JPS4842620A (enExample) | 1973-06-21 |
Family
ID=22677026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP47095829A Pending JPS4842620A (enExample) | 1971-09-28 | 1972-09-26 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3769448A (enExample) |
| JP (1) | JPS4842620A (enExample) |
| BE (1) | BE789101A (enExample) |
| CH (1) | CH549918A (enExample) |
| DE (1) | DE2247547A1 (enExample) |
| FR (1) | FR2154615A1 (enExample) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4928215A (enExample) * | 1972-07-11 | 1974-03-13 | ||
| JPS51150912A (en) * | 1975-06-20 | 1976-12-24 | Hiroshi Saito | Pay television system |
| JPS5767473U (enExample) * | 1980-10-08 | 1982-04-22 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3826863A (en) * | 1973-02-09 | 1974-07-30 | Oak Industries Inc | Subscription television system using audio and video carrier reversal |
| USRE33189E (en) * | 1981-11-19 | 1990-03-27 | Communications Satellite Corporation | Security system for SSTV encryption |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3231818A (en) * | 1961-11-09 | 1966-01-25 | Paramount Pictures Corp | Audio secrecy system for subscription television |
-
0
- BE BE789101D patent/BE789101A/xx unknown
-
1971
- 1971-09-28 US US00184474A patent/US3769448A/en not_active Expired - Lifetime
-
1972
- 1972-09-26 JP JP47095829A patent/JPS4842620A/ja active Pending
- 1972-09-26 CH CH1401772A patent/CH549918A/xx not_active IP Right Cessation
- 1972-09-27 FR FR7234080A patent/FR2154615A1/fr not_active Withdrawn
- 1972-09-28 DE DE19722247547 patent/DE2247547A1/de active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4928215A (enExample) * | 1972-07-11 | 1974-03-13 | ||
| JPS51150912A (en) * | 1975-06-20 | 1976-12-24 | Hiroshi Saito | Pay television system |
| JPS5767473U (enExample) * | 1980-10-08 | 1982-04-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| CH549918A (de) | 1974-05-31 |
| FR2154615A1 (enExample) | 1973-05-11 |
| US3769448A (en) | 1973-10-30 |
| BE789101A (fr) | 1973-01-15 |
| DE2247547A1 (de) | 1973-04-05 |