JPH01107055U - - Google Patents
Info
- Publication number
- JPH01107055U JPH01107055U JP20082787U JP20082787U JPH01107055U JP H01107055 U JPH01107055 U JP H01107055U JP 20082787 U JP20082787 U JP 20082787U JP 20082787 U JP20082787 U JP 20082787U JP H01107055 U JPH01107055 U JP H01107055U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- mute
- amplifier
- input
- selector
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Description
第１図はこの考案の一実施例に係るアンプの構
成を示すブロツク図、第２図は第１図中のマイク
ロコンピユータの動作を説明するフローチヤート
、第３図は従来のアンプの構成を示すブロツク図
、第４図は第３図中のマイクロコンピユータの動
作を説明するフローチヤートである。
１０：セレクタ回路、１２：増幅器、１４：ス
ピーカ、１６Ａ：マイクロコンピユータ、Ｔｒ：
トランジスタ。
Figure 1 is a block diagram showing the configuration of an amplifier according to an embodiment of this invention, Figure 2 is a flowchart explaining the operation of the microcomputer in Figure 1, and Figure 3 shows the configuration of a conventional amplifier. The block diagram, FIG. 4, is a flowchart explaining the operation of the microcomputer shown in FIG. 10: Selector circuit, 12: Amplifier, 14: Speaker, 16A: Microcomputer, Tr:
transistor.
Claims (1)
出力するセレクタ回路と、 このセレクタ回路の制御を行い、ソースが指定
されたときは、指定された１つの入力ソースを出
力せしめるセレクタ制御回路と、 前記セレクタ回路の出力信号を増幅する増幅器
と、 この増幅器の入力を必要に応じて零とするミユ
ート回路と、 このミユート回路の制御を行い、電源オン後、
ミユート回路を作動させて増幅器入力にミユート
を掛けさせ、電源オンから所定時間経過後ミユー
ト回路を不作動にしてミユートを解除させるミユ
ート制御回路と、 を備え、 前記セレクタ制御回路は電源オンから前記所定
時間経過するまで前記セレクタ回路の出力をオー
プン状態に保たせ、電源オンから前記所定時間経
過後、予め設定された或る１つの入力ソースをセ
レクト回路より出力させるようにしたことを特徴
とするオーデイオ増幅器。[Claims for Utility Model Registration] A selector circuit that selectively selects and outputs one from a plurality of input sources; A selector control circuit that outputs an input source, an amplifier that amplifies the output signal of the selector circuit, a mute circuit that zeroes out the input of this amplifier as necessary, and controls the mute circuit, and after turning on the power,
a mute control circuit that activates a mute circuit to apply mute to the amplifier input, and deactivates the mute circuit to release the mute after a predetermined period of time has elapsed since power-on; The output of the selector circuit is maintained in an open state until a time elapses, and after the predetermined time has elapsed since the power is turned on, one preset input source is output from the select circuit. amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20082787U JPH0617218Y2 (en) | 1987-12-30 | 1987-12-30 | Audio amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20082787U JPH0617218Y2 (en) | 1987-12-30 | 1987-12-30 | Audio amplifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01107055U true JPH01107055U (en) | 1989-07-19 |
| JPH0617218Y2 JPH0617218Y2 (en) | 1994-05-02 |
Family
ID=31491216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20082787U Expired - Lifetime JPH0617218Y2 (en) | 1987-12-30 | 1987-12-30 | Audio amplifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0617218Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04207300A (en) * | 1990-11-29 | 1992-07-29 | Fujitsu Ten Ltd | Muting device for sound field control |
| JP2018125798A (en) * | 2017-02-03 | 2018-08-09 | メモリーテック・ホールディングス株式会社 | Portable voice reproducer |
-
1987
- 1987-12-30 JP JP20082787U patent/JPH0617218Y2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04207300A (en) * | 1990-11-29 | 1992-07-29 | Fujitsu Ten Ltd | Muting device for sound field control |
| JP2018125798A (en) * | 2017-02-03 | 2018-08-09 | メモリーテック・ホールディングス株式会社 | Portable voice reproducer |
| JP2021145353A (en) * | 2017-02-03 | 2021-09-24 | メモリーテック・ホールディングス株式会社 | Portable voice player |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0617218Y2 (en) | 1994-05-02 |