JPH02123117U - - Google Patents
Info
- Publication number
- JPH02123117U JPH02123117U JP3274589U JP3274589U JPH02123117U JP H02123117 U JPH02123117 U JP H02123117U JP 3274589 U JP3274589 U JP 3274589U JP 3274589 U JP3274589 U JP 3274589U JP H02123117 U JPH02123117 U JP H02123117U
- Authority
- JP
- Japan
- Prior art keywords
- switch
- volume
- turning
- decreased
- pressed
- 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
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method 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を示すブロツク図で
第２図及び第３図は減衰量データの入力方法を示
したものであり、第４図は本考案の一実施例を制
御するソフトウエアのフローチヤートである。
１は電子ボリウム用ＩＣ、１ａは１０ｄＢステ
ツプアツテネータ、１ｂは２ｄＢステツプアツテ
ネータ、１ｃはストローブ端子、１ｄはクロツク
端子、１ｅはデータ端子、２はオペアンプ、３は
インプツト端子、４はマイクロコンピユータ、５
は音量増大の為のキー、６は音量減少の為のキー
、７は減衰量の変化を早める為のキー、８は制御
線、９はアウトプツト端子である。
Fig. 1 is a block diagram showing an embodiment of the present invention, Figs. 2 and 3 show a method of inputting attenuation data, and Fig. 4 shows software for controlling an embodiment of the present invention. This is a flowchart of clothing. 1 is an electronic volume IC, 1a is a 10 dB step attenuator, 1b is a 2 dB step attenuator, 1c is a strobe terminal, 1d is a clock terminal, 1e is a data terminal, 2 is an operational amplifier, 3 is an input terminal, 4 is a microcomputer, 5
6 is a key for increasing the volume, 6 is a key for decreasing the volume, 7 is a key for accelerating the change in attenuation amount, 8 is a control line, and 9 is an output terminal.
Claims (1)
ＦＦを検出し、この検出により抵抗値を変化せし
め、第１のスイツチのＯＮ／ＯＦＦにより音量を
増大させ、第２のスイツチのＯＮ／ＯＦＦにより
音量を減少する様構成し、さらに第３のスイツチ
を設け、第１のスイツチと第３のスイツチもしく
は第２のスイツチと第３のスイツチが同時もしく
は交互に押された時、音量の変化する速度を第１
のスイツチ又は第２のスイツチが単独に押された
ときと異なる様にしたことを特徴とした音響機器
の電子式ボリウム回路。 ON/O of the first switch and second switch
FF is detected, the resistance value is changed by this detection, the volume is increased by turning on/off the first switch, and the volume is decreased by turning the second switch ON/OFF, and the sound volume is decreased by turning the second switch ON/OFF. is provided, and when the first switch and the third switch or the second switch and the third switch are pressed simultaneously or alternately, the speed at which the volume changes is set to the first switch.
An electronic volume circuit for an audio device, characterized in that the switch or the second switch behaves differently from when pressed individually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3274589U JPH02123117U (en) | 1989-03-23 | 1989-03-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3274589U JPH02123117U (en) | 1989-03-23 | 1989-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02123117U true JPH02123117U (en) | 1990-10-09 |
Family
ID=31259311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3274589U Pending JPH02123117U (en) | 1989-03-23 | 1989-03-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02123117U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61146007A (en) * | 1984-12-20 | 1986-07-03 | Matsushita Electric Ind Co Ltd | Electron volume device |
-
1989
- 1989-03-23 JP JP3274589U patent/JPH02123117U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61146007A (en) * | 1984-12-20 | 1986-07-03 | Matsushita Electric Ind Co Ltd | Electron volume device |
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