JPS55127779A - Channel sensor in catv system - Google Patents
Channel sensor in catv systemInfo
- Publication number
- JPS55127779A JPS55127779A JP3493379A JP3493379A JPS55127779A JP S55127779 A JPS55127779 A JP S55127779A JP 3493379 A JP3493379 A JP 3493379A JP 3493379 A JP3493379 A JP 3493379A JP S55127779 A JPS55127779 A JP S55127779A
- Authority
- JP
- Japan
- Prior art keywords
- channel
- holding circuit
- center
- circuit
- counter
- 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
Abstract
PURPOSE: To make it possible to detect easily from the center side a channel which is received by the television receiver of the terminal equipment in each home, by transmitting information to the center.
CONSTITUTION: Counter 43 counts the oscillation frequency of oscillator 44 and outputs a pulse wave to a holding circuit at every time τ and calculates the time difference of the signal from demodulating circuit 48 till input to holding circuit 45 and decides a channel of current receiving on a basis of the time difference. In holding circuit 45, coded information corresponding to the decided channel is transferred to transmission circuit 46, and the decided channel is stored and held, thus reporting always coded information to the center independently of the operation of counter 43.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3493379A JPS55127779A (en) | 1979-03-24 | 1979-03-24 | Channel sensor in catv system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3493379A JPS55127779A (en) | 1979-03-24 | 1979-03-24 | Channel sensor in catv system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55127779A true JPS55127779A (en) | 1980-10-02 |
Family
ID=12427985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3493379A Pending JPS55127779A (en) | 1979-03-24 | 1979-03-24 | Channel sensor in catv system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55127779A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62286388A (en) * | 1986-06-04 | 1987-12-12 | Maspro Denkoh Corp | Catv system |
-
1979
- 1979-03-24 JP JP3493379A patent/JPS55127779A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62286388A (en) * | 1986-06-04 | 1987-12-12 | Maspro Denkoh Corp | Catv system |
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