JPH0286257U - - Google Patents
Info
- Publication number
- JPH0286257U JPH0286257U JP16640188U JP16640188U JPH0286257U JP H0286257 U JPH0286257 U JP H0286257U JP 16640188 U JP16640188 U JP 16640188U JP 16640188 U JP16640188 U JP 16640188U JP H0286257 U JPH0286257 U JP H0286257U
- Authority
- JP
- Japan
- Prior art keywords
- reference data
- detection signal
- switch
- controls
- microphone
- 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 3
- 238000010586 diagram Methods 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Selective Calling Equipment (AREA)
Description
第１図は本考案の第１の実施例のブロツク図、
第２図は本考案の第２の実施例のブロツク図、第
３図は第２図の第２の実施例の動作を説明するた
めのタイム図、第４図は従来のスイツチ制御回路
の第１の例のブロツク図、第５図は従来のスイツ
チ制御回路の第２の例のブロツク図である。
１……電話機、１ａ……ベル、２……マイクロ
ホン、３，３ａ……フイルタ回路、４，４ａ……
増幅器、５……Ａ−Ｄ変換器、６，６ａ，６ｂ…
…制御部、７……スイツチ回路、８，８ａ……メ
モリ、９，１０……タイマ回路、１１……赤外線
発光ダイオード、１２……受光素子、１３……検
波器、１４……波形整形回路、１５……キー入力
、１６……タイマ回路。
FIG. 1 is a block diagram of the first embodiment of the present invention;
FIG. 2 is a block diagram of a second embodiment of the present invention, FIG. 3 is a time diagram for explaining the operation of the second embodiment of FIG. 2, and FIG. 4 is a diagram of a conventional switch control circuit. FIG. 5 is a block diagram of a second example of a conventional switch control circuit. 1... Telephone, 1a... Bell, 2... Microphone, 3, 3a... Filter circuit, 4, 4a...
Amplifier, 5...A-D converter, 6, 6a, 6b...
...control unit, 7...switch circuit, 8, 8a...memory, 9, 10...timer circuit, 11...infrared light emitting diode, 12...light receiving element, 13...detector, 14...waveform shaping circuit , 15...key input, 16...timer circuit.
Claims (1)
力するマイクロホンと、前記検出信号をデイジタ
ル信号に変換するＡ−Ｄ変換器と、スイツチの接
及び断の設定条件にもとづく基準データを格納す
るメモリと、前記基準データの格納と読出制御を
行いかつ前記検出信号と前記基準データを比較し
その比較結果に応じて前記スイツチの接及び断の
制御を行う制御部とを含むことを特徴とするスイ
ツチ制御回路。 A microphone that detects the intermittent sound of a telephone bell and outputs a detection signal, an A-D converter that converts the detection signal into a digital signal, and a memory that stores reference data based on the connection/disconnection setting conditions of the switch. and a control unit that controls storage and readout of the reference data, compares the detection signal with the reference data, and controls turning on and off of the switch according to the comparison result. control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16640188U JPH0286257U (en) | 1988-12-22 | 1988-12-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16640188U JPH0286257U (en) | 1988-12-22 | 1988-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0286257U true JPH0286257U (en) | 1990-07-09 |
Family
ID=31453747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16640188U Pending JPH0286257U (en) | 1988-12-22 | 1988-12-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0286257U (en) |
-
1988
- 1988-12-22 JP JP16640188U patent/JPH0286257U/ja active Pending
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