JPH01110534U - - Google Patents
Info
- Publication number
- JPH01110534U JPH01110534U JP470388U JP470388U JPH01110534U JP H01110534 U JPH01110534 U JP H01110534U JP 470388 U JP470388 U JP 470388U JP 470388 U JP470388 U JP 470388U JP H01110534 U JPH01110534 U JP H01110534U
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- power amplifier
- vehicle power
- acoustic signal
- light
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 2
- 230000008054 signal transmission Effects 0.000 claims 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 1
Landscapes
- Selective Calling Equipment (AREA)
- Optical Communication System (AREA)
Description
第１図ａはこの考案の一実施例の構成の主要部
を示すブロツク図。第１図ｂはこの考案の一実施
例による車載用電力増幅器の音響信号側をも含め
たブロツク図。第２図はこの考案の一実施例にお
ける作用の説明に供する波形図。
１０１…エンジンキースイツチ、１０２…スイ
ツチ、１１および１５…デジタルオーデイオイン
タフエース回路、１２…発光器、１３…光フアイ
バーケーブル、１４…受光器、１６…光検出回路
、１７…電源供給制御回路、１８…デジタルフイ
ルタ、１９…デジタル／アナログ変換器、２０…
車載用電力増幅器、２０１…増幅器本体。
FIG. 1a is a block diagram showing the main part of the configuration of an embodiment of this invention. FIG. 1b is a block diagram including the audio signal side of an on-vehicle power amplifier according to an embodiment of this invention. FIG. 2 is a waveform diagram for explaining the operation in one embodiment of this invention. 10 1 ... Engine key switch, 10 2 ... Switch, 11 and 15... Digital audio interface circuit, 12... Light emitter, 13... Optical fiber cable, 14... Light receiver, 16... Photo detection circuit, 17... Power supply control circuit , 18...Digital filter, 19...Digital/analog converter, 20...
Automotive power amplifier, 20 1 ...Amplifier body.
Claims (1)
段により光に変換し、光フアイバーケーブルを介
して車載用電力増幅器に伝送する車載用音響装置
における信号伝送方式において、車載用電力増幅
器に光に変換された音響信号が光フアイバーケー
ブルを介して供給されたことを検出する検出手段
と、検出手段の出力にともなつて車載用電力増幅
器に電源電圧を印加する電源供給制御手段とを車
載用電力増幅器に設けたことを特徴とする車載用
音響装置における信号伝送方式。 In a signal transmission method for in-vehicle audio equipment in which an acoustic signal from an in-vehicle acoustic signal generation source is converted into light by a light emitting means and transmitted to an in-vehicle power amplifier via an optical fiber cable, the signal is converted into light by the in-vehicle power amplifier. An on-vehicle power amplifier includes a detection means for detecting that the acoustic signal is supplied via an optical fiber cable, and a power supply control means for applying a power supply voltage to the on-vehicle power amplifier in accordance with the output of the detection means. A signal transmission method for an in-vehicle audio device characterized by being provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP470388U JPH01110534U (en) | 1988-01-20 | 1988-01-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP470388U JPH01110534U (en) | 1988-01-20 | 1988-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01110534U true JPH01110534U (en) | 1989-07-26 |
Family
ID=31207450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP470388U Pending JPH01110534U (en) | 1988-01-20 | 1988-01-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01110534U (en) |
-
1988
- 1988-01-20 JP JP470388U patent/JPH01110534U/ja active Pending
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