JPH0356238U - - Google Patents
Info
- Publication number
- JPH0356238U JPH0356238U JP11574589U JP11574589U JPH0356238U JP H0356238 U JPH0356238 U JP H0356238U JP 11574589 U JP11574589 U JP 11574589U JP 11574589 U JP11574589 U JP 11574589U JP H0356238 U JPH0356238 U JP H0356238U
- Authority
- JP
- Japan
- Prior art keywords
- power
- audio signal
- radio
- circuit
- detection
- 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
Landscapes
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Description
第１図はこの考案の１つの実施例に係る車載オ
ーデイオシステムのブロツク図、第２図は従来の
車載オーデイオシステムのブロツク図である。
主な符号の説明、１０Ａ……ラジオ切換装置、
２０……オーデイオ信号検出回路、Ｔｒ１……ト
ランジスタ。
FIG. 1 is a block diagram of an in-vehicle audio system according to one embodiment of this invention, and FIG. 2 is a block diagram of a conventional in-vehicle audio system. Explanation of main codes, 10A...radio switching device,
20...Audio signal detection circuit, Tr1...transistor.
Claims (1)
側へ出力するとともに、車載ラジオの電源スイツ
チのオン・オフを検出する電源オン・オフ検出回
路と、この電源オン・オフ検出回路の検出出力に
基づき後段へパワーコントロール信号を出力する
パワーコントロール回路と、を含むラジオ切換装
置において、 電源オン・オフ検出回路を、車載ラジオから入
力するオーデイオ信号の有無を検出するオーデイ
オ信号検出回路で構成したこと、 を特徴とするラジオ切換装置。[Scope of claim for utility model registration] A power on/off detection circuit that inputs an audio signal from an in-vehicle radio and outputs it to the subsequent stage, and also detects whether the power switch of the in-vehicle radio is turned on or off, and this power on/off detection. In a radio switching device that includes a power control circuit that outputs a power control signal to a subsequent stage based on the detection output of the circuit, a power on/off detection circuit and an audio signal detection circuit that detects the presence or absence of an audio signal input from an in-vehicle radio. A radio switching device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11574589U JPH0356238U (en) | 1989-09-30 | 1989-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11574589U JPH0356238U (en) | 1989-09-30 | 1989-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0356238U true JPH0356238U (en) | 1991-05-30 |
Family
ID=31664063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11574589U Pending JPH0356238U (en) | 1989-09-30 | 1989-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0356238U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006516347A (en) * | 2003-01-09 | 2006-06-29 | エアリエル，インク． | Circuit and method for providing audio device with auto-off and / or auto-off function |
| KR200452160Y1 (en) * | 2008-06-19 | 2011-02-08 | 유태우 | Portable Low Frequency Stimulator |
-
1989
- 1989-09-30 JP JP11574589U patent/JPH0356238U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006516347A (en) * | 2003-01-09 | 2006-06-29 | エアリエル，インク． | Circuit and method for providing audio device with auto-off and / or auto-off function |
| JP4679503B2 (en) * | 2003-01-09 | 2011-04-27 | エアリエル，インク． | Circuit and method for providing audio device with auto-off and / or auto-off function |
| KR200452160Y1 (en) * | 2008-06-19 | 2011-02-08 | 유태우 | Portable Low Frequency Stimulator |