JPS6363152B2 - - Google Patents
Info
- Publication number
- JPS6363152B2 JPS6363152B2 JP56081624A JP8162481A JPS6363152B2 JP S6363152 B2 JPS6363152 B2 JP S6363152B2 JP 56081624 A JP56081624 A JP 56081624A JP 8162481 A JP8162481 A JP 8162481A JP S6363152 B2 JPS6363152 B2 JP S6363152B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- center
- terminal device
- channel
- status search
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 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
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56081624A JPS57196680A (en) | 1981-05-27 | 1981-05-27 | Piracy preventing device in catv system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56081624A JPS57196680A (en) | 1981-05-27 | 1981-05-27 | Piracy preventing device in catv system |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29347989A Division JPH02256335A (ja) | 1989-11-10 | 1989-11-10 | Catvシステムにおける盗視防止装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57196680A JPS57196680A (en) | 1982-12-02 |
JPS6363152B2 true JPS6363152B2 (fr) | 1988-12-06 |
Family
ID=13751478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56081624A Granted JPS57196680A (en) | 1981-05-27 | 1981-05-27 | Piracy preventing device in catv system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57196680A (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5344894U (fr) * | 1976-09-21 | 1978-04-17 | ||
JPS5552683A (en) * | 1978-10-12 | 1980-04-17 | Micron Kiki Kk | Control system for specified video program |
-
1981
- 1981-05-27 JP JP56081624A patent/JPS57196680A/ja active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5344894U (fr) * | 1976-09-21 | 1978-04-17 | ||
JPS5552683A (en) * | 1978-10-12 | 1980-04-17 | Micron Kiki Kk | Control system for specified video program |
Also Published As
Publication number | Publication date |
---|---|
JPS57196680A (en) | 1982-12-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4322745A (en) | Television signal scrambling method for CATV system | |
US4558358A (en) | Cable network monitoring system for CATV system | |
US4616214A (en) | Security system | |
US4450481A (en) | Tamper-resistant, expandable communications system | |
US6996837B1 (en) | Terminal equipment for cable television | |
US4553204A (en) | Central processing unit restoring mechanism for a system having a plurality of central processing units | |
US4347604A (en) | Bi-directional data communications system | |
US4361903A (en) | Data transmission process in a CATV system | |
US4550341A (en) | Unauthorized observation preventing device for CATV system | |
JPS5819087A (ja) | Catvシステムにおけるデ−タ | |
GB2232031A (en) | CATV display with superimposed character information | |
JPH09130773A (ja) | 対話型通信サービスのためのカーブサイド回路 | |
US3347982A (en) | Subscription television distribution with controlled rejection filters for carrier and interference signals | |
US5296932A (en) | Non-program signal acquisition system for a television signal receiver | |
JP3122500B2 (ja) | Catvシステム | |
US4427995A (en) | Fail-safe CATV system center facility | |
JPS6363152B2 (fr) | ||
US4398214A (en) | Wired television broadcasting system | |
JPS622758B2 (fr) | ||
US20030079232A1 (en) | Transmission device, reception device, repeating device, frequency list transmitting device, transmission system, and transmission/reception system | |
JPH02256335A (ja) | Catvシステムにおける盗視防止装置 | |
JPS6247395B2 (fr) | ||
JPS5841016B2 (ja) | Fm放送システム | |
KR0135478B1 (ko) | 유선방송망의 쌍방향 데이타 통신 시스템 | |
JPS625394B2 (fr) |