JPS6489728A - Private broadcasting control system - Google Patents

Private broadcasting control system

Info

Publication number
JPS6489728A
JPS6489728A JP24408987A JP24408987A JPS6489728A JP S6489728 A JPS6489728 A JP S6489728A JP 24408987 A JP24408987 A JP 24408987A JP 24408987 A JP24408987 A JP 24408987A JP S6489728 A JPS6489728 A JP S6489728A
Authority
JP
Japan
Prior art keywords
private broadcasting
broadcasting unit
signal
private
outputted
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
JP24408987A
Other languages
Japanese (ja)
Inventor
Shigeki Sakurai
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP24408987A priority Critical patent/JPS6489728A/en
Publication of JPS6489728A publication Critical patent/JPS6489728A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To control a private broadcasting unit without using an exclusive-use control signal line by outputting a sound signal by an information receiving timing signal for a private broadcasting unit and when it is not outputted, controlling not to output acoustic information. CONSTITUTION:When a private broadcasting unit 106 is activated through an extension telephone set 110a, a handset is picked up and off-hooked and a private broadcasting unit activating button is pushed down and inputted. A central control part 102 confirms that the private broadcasting unit 106 is not used and instructs a frame signal sending toward the private broadcasting unit 106 to a frame signal control part 104. Thus, an SYNCS signal 109n is outputted with the output timing of an SYNCn signal 204n. The private broadcasting unit 106, when the SYNCS signal 109n is sent, energizes a speaker driving circuit 304 and acoustically outputs a voice pattern sent from the extension telephone set.
JP24408987A 1987-09-30 1987-09-30 Private broadcasting control system Pending JPS6489728A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24408987A JPS6489728A (en) 1987-09-30 1987-09-30 Private broadcasting control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24408987A JPS6489728A (en) 1987-09-30 1987-09-30 Private broadcasting control system

Publications (1)

Publication Number Publication Date
JPS6489728A true JPS6489728A (en) 1989-04-04

Family

ID=17113575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24408987A Pending JPS6489728A (en) 1987-09-30 1987-09-30 Private broadcasting control system

Country Status (1)

Country Link
JP (1) JPS6489728A (en)

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