JPH0277954U - - Google Patents
Info
- Publication number
- JPH0277954U JPH0277954U JP15668388U JP15668388U JPH0277954U JP H0277954 U JPH0277954 U JP H0277954U JP 15668388 U JP15668388 U JP 15668388U JP 15668388 U JP15668388 U JP 15668388U JP H0277954 U JPH0277954 U JP H0277954U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- dial
- push button
- high impedance
- key input
- 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 2
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は、本考案の一実施例を示す電話機の主
要機能ブロツク図である。
１０１……ダイヤルＩＣ、１０２……２メーク
ダイヤルスイツチ（ダイヤル１）、１０３……汎
用ＣＰＵ、１０４……ＣＰＵを動作させるための
独立電源、１０５……電圧検出回路、１０６……
インターフエース回路、１０７……ダイヤル送出
回路、１０８，１０９……制御線、１１０……キ
ー入力情報遮断回路。
FIG. 1 is a block diagram of the main functions of a telephone illustrating an embodiment of the present invention. 101...Dial IC, 102...2 make dial switch (dial 1), 103...General-purpose CPU, 104...Independent power supply for operating the CPU, 105...Voltage detection circuit, 106...
Interface circuit, 107...Dial sending circuit, 108, 109...Control line, 110...Key input information cutoff circuit.
Claims (1)
源を備え、各押釦と連動する２メークのダイヤル
スイツチを具備し、各押釦に対応する数字または
記号を入力する電話機において、電源有り時と無
し時とを電圧検出回路の出力を用いてキー入力情
報遮断回路とＣＰＵを制御し、電源有り時に、キ
ー入力情報遮断回路を高インピーダンスとし、押
釦が押下されたとき２メークダイヤルスイツチの
一方のメーク接点は、キー情報入力回路を高イン
ピーダンスのキー入力遮断回路により遮断し、他
方のメーク接点は、ＣＰＵ、インターフエース回
路、ダイヤルＩＣを経てダイヤル送出回路へキー
情報を入力することを特徴とする押しボタンダイ
ヤルインターフエース回路。 A push-button telephone connected to a central office line is equipped with an independent power supply, has a two-way dial switch that works with each push button, and inputs numbers or symbols corresponding to each push button, with and without power. The output of the voltage detection circuit is used to control the key input information cutoff circuit and the CPU, and when the power is on, the key input information cutoff circuit is set to high impedance, and when the push button is pressed, one make contact of the 2 make dial switch is set to high impedance. is a push button characterized in that a key information input circuit is cut off by a high impedance key input cutoff circuit, and the other make contact inputs key information to a dial output circuit via a CPU, an interface circuit, and a dial IC. Dial interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15668388U JPH0277954U (en) | 1988-12-02 | 1988-12-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15668388U JPH0277954U (en) | 1988-12-02 | 1988-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0277954U true JPH0277954U (en) | 1990-06-14 |
Family
ID=31435441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15668388U Pending JPH0277954U (en) | 1988-12-02 | 1988-12-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0277954U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61212947A (en) * | 1985-03-19 | 1986-09-20 | Tamura Electric Works Ltd | Function telephone set |
| JPS62237845A (en) * | 1986-04-09 | 1987-10-17 | Taiko Denki Seisakusho:Kk | Control system for dial circuit of telephone set |
| JPS6349853A (en) * | 1986-08-19 | 1988-03-02 | Fujitsu Ltd | Logic simulation processing system |
-
1988
- 1988-12-02 JP JP15668388U patent/JPH0277954U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61212947A (en) * | 1985-03-19 | 1986-09-20 | Tamura Electric Works Ltd | Function telephone set |
| JPS62237845A (en) * | 1986-04-09 | 1987-10-17 | Taiko Denki Seisakusho:Kk | Control system for dial circuit of telephone set |
| JPS6349853A (en) * | 1986-08-19 | 1988-03-02 | Fujitsu Ltd | Logic simulation processing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0277954U (en) | ||
| JPH04593Y2 (en) | ||
| JPS6242336U (en) | ||
| JPS63113966U (en) | ||
| JPS6316326U (en) | ||
| JPS639636U (en) | ||
| JPS6364148U (en) | ||
| JPS6347690U (en) | ||
| JPS60104906U (en) | Plant failure confirmation operation circuit | |
| JPS62105648U (en) | ||
| JPH01135533U (en) | ||
| JPS59140537U (en) | Pressure signal generation circuit | |
| JPS6064525U (en) | operating device | |
| JPS6155736U (en) | ||
| JPH0170428U (en) | ||
| JPS6435426U (en) | ||
| JPS62138236U (en) | ||
| JPH0363895U (en) | ||
| JPS61128731U (en) | ||
| JPS63192618U (en) | ||
| JPS6244336U (en) | ||
| JPH02141137U (en) | ||
| JPH0216622U (en) | ||
| JPS6271947U (en) | ||
| JPH02847U (en) |