JPS5628575A - Audient channel selecting method in catv system - Google Patents

Audient channel selecting method in catv system

Info

Publication number
JPS5628575A
JPS5628575A JP10444879A JP10444879A JPS5628575A JP S5628575 A JPS5628575 A JP S5628575A JP 10444879 A JP10444879 A JP 10444879A JP 10444879 A JP10444879 A JP 10444879A JP S5628575 A JPS5628575 A JP S5628575A
Authority
JP
Japan
Prior art keywords
channel
sound
signal
audient
center
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
Application number
JP10444879A
Other languages
Japanese (ja)
Other versions
JPS6247395B2 (en
Inventor
Yoshitsugu Oota
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 JP10444879A priority Critical patent/JPS5628575A/en
Publication of JPS5628575A publication Critical patent/JPS5628575A/en
Publication of JPS6247395B2 publication Critical patent/JPS6247395B2/ja
Granted legal-status Critical Current

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

Abstract

PURPOSE:To detect a channel, which is received by the receiver, and report it to the center, by mixing the channel discrimination signal of a frequency outside the audible band into the sound signal of each channel transmitted from the center and by transmitting them to the receiving side. CONSTITUTION:The sound signal is included in the video signal, and the channel discrimination signal is mixed in the sound signal with an ultrasonic wave, and they are transmitted from the center to the receiving side. When the video signal is input to converter 31 through branching equipment 30 in the receiving side, a channel selected by control box 12 is converted to a specific frequency to cause TV receiver 11 to receive the selected channel. When the selected channel is received, sound of the channel is emitted from the speaker, and this sound is picked up by microphone 32 to detect the channel discrimination signal in sound by channel discriminating circuit 33. The audient channel is discriminated and is sent from transmission circuit 34.
JP10444879A 1979-08-16 1979-08-16 Audient channel selecting method in catv system Granted JPS5628575A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10444879A JPS5628575A (en) 1979-08-16 1979-08-16 Audient channel selecting method in catv system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10444879A JPS5628575A (en) 1979-08-16 1979-08-16 Audient channel selecting method in catv system

Publications (2)

Publication Number Publication Date
JPS5628575A true JPS5628575A (en) 1981-03-20
JPS6247395B2 JPS6247395B2 (en) 1987-10-07

Family

ID=14380910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10444879A Granted JPS5628575A (en) 1979-08-16 1979-08-16 Audient channel selecting method in catv system

Country Status (1)

Country Link
JP (1) JPS5628575A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5630203A (en) * 1993-01-12 1997-05-13 Weinblatt; Lee S. Technique for surveying a radio or a television audience

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4950819A (en) * 1972-05-16 1974-05-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4950819A (en) * 1972-05-16 1974-05-17

Also Published As

Publication number Publication date
JPS6247395B2 (en) 1987-10-07

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