JPS6411016U - - Google Patents
Info
- Publication number
- JPS6411016U JPS6411016U JP10584087U JP10584087U JPS6411016U JP S6411016 U JPS6411016 U JP S6411016U JP 10584087 U JP10584087 U JP 10584087U JP 10584087 U JP10584087 U JP 10584087U JP S6411016 U JPS6411016 U JP S6411016U
- Authority
- JP
- Japan
- Prior art keywords
- volume
- reference voltage
- voltage
- comparator
- sensor
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図は本考案の一実施例のブロツク回路図で
ある。
１……センサ、２……基準電圧発生回路、３…
…コンパレータ、４……制御回路、５……リレー
スイツチ、６，７……リレースイツチの接点、８
……リレースイツチの接片、９……増幅回路、１
０……電話機受話回線、１１……拡声器。
FIG. 1 is a block circuit diagram of one embodiment of the present invention. 1...Sensor, 2...Reference voltage generation circuit, 3...
... Comparator, 4 ... Control circuit, 5 ... Relay switch, 6, 7 ... Relay switch contact, 8
... Relay switch contact piece, 9 ... Amplifier circuit, 1
0... Telephone receiving line, 11... Loudspeaker.
Claims (1)
の値で検出するセンサと、予め設定された基準電
圧を発生する基準電圧発生回路と、前記センサが
検出した音量に対応する電圧および前記基準電圧
を受けて、これらの電圧を比較するコンパレータ
と、このコンパレータが前記音量に対応する電圧
と前記基準電圧を比較した結果により前記電話機
の受話音量を制御する手段とを有することを特徴
とする電話受話器。 A sensor that captures sound around the phone and detects its volume as a voltage value, a reference voltage generation circuit that generates a preset reference voltage, and a voltage corresponding to the volume detected by the sensor and the reference voltage. A telephone receiver comprising: a comparator for receiving and comparing these voltages; and means for controlling a listening volume of the telephone based on the result of the comparison between the voltage corresponding to the volume and the reference voltage by the comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10584087U JPS6411016U (en) | 1987-07-08 | 1987-07-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10584087U JPS6411016U (en) | 1987-07-08 | 1987-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6411016U true JPS6411016U (en) | 1989-01-20 |
Family
ID=31338817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10584087U Pending JPS6411016U (en) | 1987-07-08 | 1987-07-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6411016U (en) |
-
1987
- 1987-07-08 JP JP10584087U patent/JPS6411016U/ja active Pending