JPS6413865U - - Google Patents
Info
- Publication number
- JPS6413865U JPS6413865U JP10634587U JP10634587U JPS6413865U JP S6413865 U JPS6413865 U JP S6413865U JP 10634587 U JP10634587 U JP 10634587U JP 10634587 U JP10634587 U JP 10634587U JP S6413865 U JPS6413865 U JP S6413865U
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- main channel
- audio mute
- surround
- head
- 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 4
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図はこの考案に係る映像機器の音声ミユー
ト回路の一実施例を示す回路図、第２図は第１図
の動作を説明するための説明図、第３図は従来の
音声ミユート回路の一例を示す回路図である。
１２……メインアンプ、１３……ヘツドフオン
ジヤツク、１４……主スピーカ、１７……サラウ
ンドアンプ、１８……サラウンドスピーカ、１７
ａ……音声ミユート端子、Ｖｃ……電圧源端子、
Ｒ１，Ｒ２……抵抗、Ｓ３……可動接片。
FIG. 1 is a circuit diagram showing an embodiment of the audio mute circuit for video equipment according to this invention, FIG. 2 is an explanatory diagram for explaining the operation of FIG. 1, and FIG. 3 is a circuit diagram of a conventional audio mute circuit. FIG. 2 is a circuit diagram showing an example. 12... Main amplifier, 13... Headphone jack, 14... Main speaker, 17... Surround amplifier, 18... Surround speaker, 17
a...Audio mute terminal, Vc...Voltage source terminal,
R1, R2...resistance, S3...movable contact piece.
Claims (1)
ウンド音を作成するサラウンド回路と、 音声ミユート端子を有し、前記サラウンド回路
からの信号をサラウンド用スピーカに導く第２の
アンプと、 電圧源及び基準電位点間に直列接続された第１
、及び第２の抵抗を含み、その接続点より前記電
圧源からの電圧を分圧して前記音声ミユート端子
に導びき、第２のアンプを動作させる動作電圧供
給手段と、 前記音声ミユート端子に接続された可動接片を
有し、第１のアンプからの信号をヘツドフオンプ
ラグの挿入、非挿入に応じてそれぞれ主チヤンネ
ルスピーカ、及びヘツドフオンに切換選択出力す
ると共に、ヘツドフオンプラグの挿入時は、前記
可動接片を主チヤンネルスピーカと接続して前記
第１及び第２の抵抗による分圧電圧を変化し、第
２のアンプを音色ミユート動作せしめるヘツドフ
オンジヤツクと、 を具備したことを特徴とする映像機器の音声ミ
ユート回路。[Claims for Utility Model Registration] A first amplifier that amplifies a main channel signal, a surround circuit that electrically processes the main channel signal to create surround sound, and an audio mute terminal, the surround circuit having: a second amplifier that guides the signal from the amplifier to the surround speakers, and a first amplifier connected in series between the voltage source and the reference potential point.
and a second resistor, operating voltage supply means for dividing the voltage from the voltage source from the connection point thereof and guiding it to the audio mute terminal to operate the second amplifier; and connected to the audio mute terminal. It has a movable contact piece that selectively outputs the signal from the first amplifier to the main channel speaker and the head-on depending on whether the head-on plug is inserted or not, and when the head-on plug is inserted, and a headphone jack that connects the movable contact piece to the main channel speaker to change the voltage divided by the first and second resistors to cause the second amplifier to perform a tone muting operation. audio mute circuit for video equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10634587U JPS6413865U (en) | 1987-07-13 | 1987-07-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10634587U JPS6413865U (en) | 1987-07-13 | 1987-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6413865U true JPS6413865U (en) | 1989-01-24 |
Family
ID=31339767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10634587U Pending JPS6413865U (en) | 1987-07-13 | 1987-07-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6413865U (en) |
-
1987
- 1987-07-13 JP JP10634587U patent/JPS6413865U/ja active Pending
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