JPS5539440A - Tuning system of terminal unit for catv system - Google Patents
Tuning system of terminal unit for catv systemInfo
- Publication number
- JPS5539440A JPS5539440A JP11283278A JP11283278A JPS5539440A JP S5539440 A JPS5539440 A JP S5539440A JP 11283278 A JP11283278 A JP 11283278A JP 11283278 A JP11283278 A JP 11283278A JP S5539440 A JPS5539440 A JP S5539440A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- data
- sent
- channel
- tuning
- 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.)
- 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
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17309—Transmission or handling of upstream communications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11283278A JPS5539440A (en) | 1978-09-13 | 1978-09-13 | Tuning system of terminal unit for catv system |
US06/074,486 US4317215A (en) | 1978-09-13 | 1979-09-11 | Tuning system for CATV terminal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11283278A JPS5539440A (en) | 1978-09-13 | 1978-09-13 | Tuning system of terminal unit for catv system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5539440A true JPS5539440A (en) | 1980-03-19 |
Family
ID=14596642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11283278A Pending JPS5539440A (en) | 1978-09-13 | 1978-09-13 | Tuning system of terminal unit for catv system |
Country Status (2)
Country | Link |
---|---|
US (1) | US4317215A (ja) |
JP (1) | JPS5539440A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58127770U (ja) * | 1982-02-22 | 1983-08-30 | ミクロン機器株式会社 | テレビジヨン有料化方式 |
JPS58212281A (ja) * | 1982-06-04 | 1983-12-09 | Fujitsu General Ltd | 受信装置の有料チヤンネル設定装置 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4965825A (en) * | 1981-11-03 | 1990-10-23 | The Personalized Mass Media Corporation | Signal processing apparatus and methods |
US7831204B1 (en) * | 1981-11-03 | 2010-11-09 | Personalized Media Communications, Llc | Signal processing apparatus and methods |
USRE47642E1 (en) | 1981-11-03 | 2019-10-08 | Personalized Media Communications LLC | Signal processing apparatus and methods |
US4405946A (en) * | 1982-02-16 | 1983-09-20 | Rca Corporation | Television signal converting apparatus providing an on-screen tuning display |
US4550341A (en) * | 1982-08-03 | 1985-10-29 | Pioneer Electronic Corporation | Unauthorized observation preventing device for CATV system |
US4520508A (en) * | 1982-12-21 | 1985-05-28 | General Instrument Corporation | Subscriber terminal for monitoring radio-frequency signal ingress into cable television systems |
DE3318919C2 (de) * | 1983-05-25 | 1985-03-21 | TeleMetric S.A., Internationale Gesellschaft für Fernsehzuschauerforschung, Zug | Verfahren und Vorrichtung zum Erfassen von Daten über das Fernseheinschaltverhalten von Fernsehzuschauern |
US4751732A (en) * | 1984-07-06 | 1988-06-14 | Kabushiki Kaisha Toshiba | Broadcasting system |
JP2663919B2 (ja) * | 1995-05-31 | 1997-10-15 | 日本電気株式会社 | 周波数分割多元接続方式の通信システム |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3733430A (en) * | 1970-12-28 | 1973-05-15 | Rca Corp | Channel monitoring system |
US3885089A (en) * | 1973-02-16 | 1975-05-20 | Hughes Aircraft Co | Television scrambling system |
US3978411A (en) * | 1973-11-30 | 1976-08-31 | Matsushita Electric Industrial Co., Ltd. | Sweep output generator having a frequency modulated local oscillator for the station selector of a television receiver |
DE2437974C3 (de) * | 1974-08-07 | 1979-04-26 | Texas Instruments Deutschland Gmbh, 8050 Freising | Kanalsuch- und Kanalwählanordnung |
US4077006A (en) * | 1975-03-14 | 1978-02-28 | Victor Nicholson | Bidirectional unicable switching system |
US4074310A (en) * | 1975-11-26 | 1978-02-14 | Artel Manufacturing Corporation | Selective cctv communicating |
US4207529A (en) * | 1976-04-08 | 1980-06-10 | Fujitsu Ten Limited | Radio receiver |
JPS5946143B2 (ja) * | 1976-04-16 | 1984-11-10 | パイオニア株式会社 | 双方向catvシステムにおける伝送確認方法および装置 |
-
1978
- 1978-09-13 JP JP11283278A patent/JPS5539440A/ja active Pending
-
1979
- 1979-09-11 US US06/074,486 patent/US4317215A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58127770U (ja) * | 1982-02-22 | 1983-08-30 | ミクロン機器株式会社 | テレビジヨン有料化方式 |
JPS58212281A (ja) * | 1982-06-04 | 1983-12-09 | Fujitsu General Ltd | 受信装置の有料チヤンネル設定装置 |
Also Published As
Publication number | Publication date |
---|---|
US4317215A (en) | 1982-02-23 |
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