JPS59104657U - Circuit to prevent forgetting to hang up the handset - Google Patents

Circuit to prevent forgetting to hang up the handset

Info

Publication number
JPS59104657U
JPS59104657U JP20114382U JP20114382U JPS59104657U JP S59104657 U JPS59104657 U JP S59104657U JP 20114382 U JP20114382 U JP 20114382U JP 20114382 U JP20114382 U JP 20114382U JP S59104657 U JPS59104657 U JP S59104657U
Authority
JP
Japan
Prior art keywords
circuit
signal
hook
output
handset
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
JP20114382U
Other languages
Japanese (ja)
Inventor
大野　和年
田辺　薫
Original Assignee
ホーチキ株式会社
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 ホーチキ株式会社 filed Critical ホーチキ株式会社
Priority to JP20114382U priority Critical patent/JPS59104657U/en
Publication of JPS59104657U publication Critical patent/JPS59104657U/en
Pending legal-status Critical Current

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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の掛は忘れ防止回路を備えたインターホ
ン設備の回路ブロック図、第２図は来者゛案の一実施例
を示した回路ブ町ンク図である。 １・・・インターホン親！１．２・・・信号線、３・・
・インターホン子機、４．１１・・・送話器、５．１０
・・・受話器、６，７・・・アシプ、８ａ、　　８ｂ・
・・フックスイッチ、９・・・呼出検出回路、１２・・
・押釦スイッチ、１３・・・警報回路、１４・・・警報
器、１５・・・増幅回路、１６町・・比較回路、１７，
２５．２６・・・インバータ、１Ｂ、　　１９．　２３
・・・アンドゲーート、２０・・・発振回路、２１．２
４・・・カウンタタイマ回路、２２・・・警報信号発生
回路。FIG. 1 is a circuit block diagram of an intercom equipment equipped with a forget-preventing circuit according to the present invention, and FIG. 2 is a circuit block diagram showing an embodiment of the visitor's idea. 1... Intercom parent! 1.2...Signal line, 3...
・Intercom handset, 4.11...Telephone, 5.10
...Receiver, 6,7...Asip, 8a, 8b.
...Hook switch, 9...Call detection circuit, 12...
・Push button switch, 13...Alarm circuit, 14...Alarm device, 15...Amplification circuit, 16 Town...Comparison circuit, 17,
25.26...Inverter, 1B, 19. 23
...and gate, 20...oscillation circuit, 21.2
4...Counter timer circuit, 22...Alarm signal generation circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 送受話器をフックから外しているときにフック信号を出
力するフックスイッチと、送受話器相互間での通話によ
る音声信号を検出する音声検出回路と、前記フックスイ
ッチよりのフック信号の出力と、前記音声検出回路より
の音声信号検出出力の遮断を検出したときに掛は忘れ検
出信号を出力する掛は忘れ検出回路と、該掛は忘れ検出
回路の出力が一定時間継続したときに出力するタイマ回
路と、該タイマ回路の出力により警報信号を送出する警
報信号発生回路とを設けたことを特徴とする送受話器掛
は忘れ防止回路。a hook switch that outputs a hook signal when the handset is off the hook; a voice detection circuit that detects a voice signal from a conversation between the handsets; output of the hook signal from the hook switch; A forget detection circuit outputs a forget detection signal when detecting interruption of the audio signal detection output from the detection circuit, and a timer circuit outputs when the output of the forget detection circuit continues for a certain period of time. , and an alarm signal generation circuit that sends out an alarm signal based on the output of the timer circuit.
JP20114382U 1982-12-28 1982-12-28 Circuit to prevent forgetting to hang up the handset Pending JPS59104657U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20114382U JPS59104657U (en) 1982-12-28 1982-12-28 Circuit to prevent forgetting to hang up the handset

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20114382U JPS59104657U (en) 1982-12-28 1982-12-28 Circuit to prevent forgetting to hang up the handset

Publications (1)

Publication Number Publication Date
JPS59104657U true JPS59104657U (en) 1984-07-14

Family

ID=30426653

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20114382U Pending JPS59104657U (en) 1982-12-28 1982-12-28 Circuit to prevent forgetting to hang up the handset

Country Status (1)

Country Link
JP (1) JPS59104657U (en)

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