JPS55127779A - Channel sensor in catv system - Google Patents

Channel sensor in catv system

Info

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
Application number
JP3493379A
Other languages
Japanese (ja)
Inventor
Masayuki Saito
Hiroki Uemura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP3493379A priority Critical patent/JPS55127779A/en
Publication of JPS55127779A publication Critical patent/JPS55127779A/en
Pending legal-status Critical Current

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
JP3493379A 1979-03-24 1979-03-24 Channel sensor in catv system Pending JPS55127779A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62286388A (en) * 1986-06-04 1987-12-12 Maspro Denkoh Corp Catv system

Cited By (1)

* Cited by examiner, † Cited by third party
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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