JPH024350U - - Google Patents
Info
- Publication number
- JPH024350U JPH024350U JP8161988U JP8161988U JPH024350U JP H024350 U JPH024350 U JP H024350U JP 8161988 U JP8161988 U JP 8161988U JP 8161988 U JP8161988 U JP 8161988U JP H024350 U JPH024350 U JP H024350U
- Authority
- JP
- Japan
- Prior art keywords
- variable gain
- speaker
- setting
- handset
- amplifying
- 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.)
- Granted
Links
- 230000003321 amplification Effects 0.000 claims 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の一実施例による電話機用音量
調整装置の構成を示すブロツク図、第２図は第１
図のマイクロコンピユータの動作を説明するため
のフローチヤートである。
１０……スピーカ、１２……受話器、１６，１
７……可変利得増幅回路、２０……信号／音声源
、３０……マイクロコンピユータ（ＣＰＵ）、５
０……設定器、５４……スピーカ／受話器切替ス
イツチ。
FIG. 1 is a block diagram showing the configuration of a telephone volume adjustment device according to an embodiment of the present invention, and FIG.
3 is a flowchart for explaining the operation of the microcomputer shown in the figure. 10...Speaker, 12...Telephone receiver, 16,1
7...Variable gain amplifier circuit, 20...Signal/audio source, 30...Microcomputer (CPU), 5
0...Setting device, 54...Speaker/handset changeover switch.
Claims (1)
を調整する装置において、 前記スピーカの信号入力端子に接続され、入力
信号を増幅して該スピーカへ供給すると共に、利
得が可変な第１の可変利得増幅手段と、 前記受話器の信号入力端子に接続され、前記入
力信号を増幅して該受話器へ供給すると共に、利
得が可変な第２の可変利得増幅手段と、 前記利得を設定するための設定手段と、 前記第１及び第２の可変利得増幅手段のどちら
か一方を選択するための選択手段と、 該選択手段、前記第１及び第２の可変利得増幅
手段、及び前記設定手段に結合され、前記選択手
段により選択された前記第１及び第２の可変利得
増幅手段のどちらか一方を前記設定手段により設
定された利得で駆動する制御手段と を有することを特徴とする電話機用音量調整装
置。[Claims for Utility Model Registration] A device for adjusting the volume of a speaker and a handset installed in a telephone, which is connected to a signal input terminal of the speaker, amplifies the input signal and supplies it to the speaker, and has a variable gain. a first variable gain amplifying means connected to the signal input terminal of the handset, amplifying the input signal and supplying it to the handset, and having a variable gain; a second variable gain amplifying means having a variable gain; setting means for setting; selection means for selecting one of the first and second variable gain amplification means; the selection means, the first and second variable gain amplification means, and the selection means for selecting one of the first and second variable gain amplification means; and control means coupled to a setting means and driving either one of the first and second variable gain amplification means selected by the selection means with the gain set by the setting means. Volume adjustment device for telephones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988081619U JPH0523005Y2 (en) | 1988-06-22 | 1988-06-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988081619U JPH0523005Y2 (en) | 1988-06-22 | 1988-06-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH024350U true JPH024350U (en) | 1990-01-11 |
| JPH0523005Y2 JPH0523005Y2 (en) | 1993-06-14 |
Family
ID=31306395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988081619U Expired - Lifetime JPH0523005Y2 (en) | 1988-06-22 | 1988-06-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0523005Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11136346A (en) * | 1997-10-31 | 1999-05-21 | Sanyo Electric Co Ltd | Telephone system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6167390A (en) * | 1984-09-11 | 1986-04-07 | Matsushita Electric Ind Co Ltd | Key telephone set |
| JPS61205058A (en) * | 1985-03-08 | 1986-09-11 | Nec Corp | Loudspeaking telephone |
| JPS6214561A (en) * | 1985-07-11 | 1987-01-23 | Toa Tokushu Denki Kk | Sound volume controller for loudening telephone set |
-
1988
- 1988-06-22 JP JP1988081619U patent/JPH0523005Y2/ja not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6167390A (en) * | 1984-09-11 | 1986-04-07 | Matsushita Electric Ind Co Ltd | Key telephone set |
| JPS61205058A (en) * | 1985-03-08 | 1986-09-11 | Nec Corp | Loudspeaking telephone |
| JPS6214561A (en) * | 1985-07-11 | 1987-01-23 | Toa Tokushu Denki Kk | Sound volume controller for loudening telephone set |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11136346A (en) * | 1997-10-31 | 1999-05-21 | Sanyo Electric Co Ltd | Telephone system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0523005Y2 (en) | 1993-06-14 |
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