JPH03123344U - - Google Patents
Info
- Publication number
- JPH03123344U JPH03123344U JP3306090U JP3306090U JPH03123344U JP H03123344 U JPH03123344 U JP H03123344U JP 3306090 U JP3306090 U JP 3306090U JP 3306090 U JP3306090 U JP 3306090U JP H03123344 U JPH03123344 U JP H03123344U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- detection circuit
- ringing signal
- footswitch
- 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
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例を示す構成図、第２
図は第１図の各部の波形図である。
１，２……フツクスイツチ、３……フツクスイ
ツチ検出回路、４……呼出し信号検出回路、５…
…カウンタ回路、６……ＯＲゲート、７……ガー
ドタイマ回路、８……メモリ回路、９……整流器
、１０……通話回路、１１……１次回路側、１２
……２次回路側。
Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The figure is a waveform diagram of each part of FIG. 1. 1, 2...Hook switch, 3...Hook switch detection circuit, 4...Call signal detection circuit, 5...
... Counter circuit, 6 ... OR gate, 7 ... Guard timer circuit, 8 ... Memory circuit, 9 ... Rectifier, 10 ... Call circuit, 11 ... Primary circuit side, 12
...Secondary circuit side.
Claims (1)
イツチ検出回路と、呼出し信号を検出する呼出し
信号検出回路と、前記呼出し信号検出回路からの
継続信号を連続信号に変換するカウンタ回路と、
前記フツクスイツチ検出回路と前記カウンタ回路
との出力信号の論理和をとる論理回路と、前記論
理回路の出力に基づきメモリ回路にノイズが入力
することを阻止する回路とを備えることを特徴と
する多機能電話機。 a footswitch detection circuit that detects opening/closing operations of a footswitch; a ringing signal detection circuit that detects a ringing signal; and a counter circuit that converts a continuous signal from the ringing signal detection circuit into a continuous signal;
A multifunctional device characterized by comprising: a logic circuit that ORs output signals of the foot switch detection circuit and the counter circuit; and a circuit that prevents noise from being input to the memory circuit based on the output of the logic circuit. telephone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3306090U JPH03123344U (en) | 1990-03-29 | 1990-03-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3306090U JPH03123344U (en) | 1990-03-29 | 1990-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03123344U true JPH03123344U (en) | 1991-12-16 |
Family
ID=31536422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3306090U Pending JPH03123344U (en) | 1990-03-29 | 1990-03-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03123344U (en) |
-
1990
- 1990-03-29 JP JP3306090U patent/JPH03123344U/ja active Pending