JPS55127778A - Terminal control unit of catv system - Google Patents
Terminal control unit of catv systemInfo
- Publication number
- JPS55127778A JPS55127778A JP3493279A JP3493279A JPS55127778A JP S55127778 A JPS55127778 A JP S55127778A JP 3493279 A JP3493279 A JP 3493279A JP 3493279 A JP3493279 A JP 3493279A JP S55127778 A JPS55127778 A JP S55127778A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power source
- transmission circuit
- original
- data
- 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.)
- Granted
Links
Abstract
PURPOSE: To reduce power consumption by providing an original oscillator, which is always operated, a transmission circuit which is normally stopped and is operated only at need, and a power source circuit for this transmission circuit.
CONSTITUTION: Terminal 10 transfers call to power source control circuit 35 when call from the center comes. Then, power source part 34 and transmission circuit 36 are connected by this call. Power is always supplied to original oscillator 39 to cause original oscillator 39 to hold a stable original oscillation frequency previously, and stable transmission can be performed immediately by connection of the power source to transmission circuit 36. Meanwhile, data indicating a channel of current receiving is stored in I/O part 32 through connector 33 previously, and is inputted to frequency division modulating circuit 37 through I/O part 32 when polling is received. Circuit 37 not only sets the original oscillation wave to a carrier frequency but also modulates the original oscillation wave with up data signal b to send data to data transmission circuit 38. Then, data is sent to the center.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3493279A JPS55127778A (en) | 1979-03-24 | 1979-03-24 | Terminal control unit of catv system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3493279A JPS55127778A (en) | 1979-03-24 | 1979-03-24 | Terminal control unit of catv system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55127778A true JPS55127778A (en) | 1980-10-02 |
JPS622758B2 JPS622758B2 (en) | 1987-01-21 |
Family
ID=12427961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3493279A Granted JPS55127778A (en) | 1979-03-24 | 1979-03-24 | Terminal control unit of catv system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55127778A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04188923A (en) * | 1990-11-21 | 1992-07-07 | Sharp Corp | Light receiving element and information equipment using the same |
JPH04188922A (en) * | 1990-11-21 | 1992-07-07 | Sharp Corp | Optical coupler and information equipment using the same |
JPH04188924A (en) * | 1990-11-21 | 1992-07-07 | Sharp Corp | Optical coupler and information equipment using the same |
US8893177B1 (en) | 1981-11-03 | 2014-11-18 | {Personalized Media Communications, LLC | Signal processing apparatus and methods |
-
1979
- 1979-03-24 JP JP3493279A patent/JPS55127778A/en active Granted
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9674560B1 (en) | 1981-11-03 | 2017-06-06 | Personalized Media Communications LLC | Signal processing apparatus and methods |
US8893177B1 (en) | 1981-11-03 | 2014-11-18 | {Personalized Media Communications, LLC | Signal processing apparatus and methods |
US8973034B1 (en) | 1981-11-03 | 2015-03-03 | Personalized Media Communications LLC | Signal processing apparatus and methods |
US9038124B1 (en) | 1981-11-03 | 2015-05-19 | Personalized Media Communications, Llc | Signal processing apparatus and methods |
US10334292B1 (en) | 1981-11-03 | 2019-06-25 | Personalized Media Communications LLC | Signal processing apparatus and methods |
US10523350B1 (en) | 1981-11-03 | 2019-12-31 | Personalized Media Communications LLC | Signal processing apparatus and methods |
USRE47867E1 (en) | 1981-11-03 | 2020-02-18 | Personalized Media Communications LLC | Signal processing apparatus and methods |
US10609425B1 (en) | 1981-11-03 | 2020-03-31 | Personalized Media Communications, L.L.C. | Signal processing apparatus and methods |
US10616638B1 (en) | 1981-11-03 | 2020-04-07 | Personalized Media Communications LLC | Signal processing apparatus and methods |
US10715835B1 (en) | 1981-11-03 | 2020-07-14 | John Christopher Harvey | Signal processing apparatus and methods |
JPH04188922A (en) * | 1990-11-21 | 1992-07-07 | Sharp Corp | Optical coupler and information equipment using the same |
JPH04188924A (en) * | 1990-11-21 | 1992-07-07 | Sharp Corp | Optical coupler and information equipment using the same |
JPH04188923A (en) * | 1990-11-21 | 1992-07-07 | Sharp Corp | Light receiving element and information equipment using the same |
Also Published As
Publication number | Publication date |
---|---|
JPS622758B2 (en) | 1987-01-21 |
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