JPS60186731U - Audio mute circuit of SHF broadcast receiver - Google Patents
Audio mute circuit of SHF broadcast receiverInfo
- Publication number
- JPS60186731U JPS60186731U JP1984073305U JP7330584U JPS60186731U JP S60186731 U JPS60186731 U JP S60186731U JP 1984073305 U JP1984073305 U JP 1984073305U JP 7330584 U JP7330584 U JP 7330584U JP S60186731 U JPS60186731 U JP S60186731U
- Authority
- JP
- Japan
- Prior art keywords
- shf
- signal
- broadcast receiver
- audio
- circuit
- 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
Landscapes
- Noise Elimination (AREA)
- Stereo-Broadcasting Methods (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例を示す回路ブロック図、第２
図はそのミュート動作を示す説明図、第３図は従来の音
声ミュート回路を備えるＳＨＦ放送受信機の要部を示す
回路ブロック図である。
１・・・音声信号復調回路、２・・・音声信号切換回路
、３Ａ、３Ｂ・・・音声信号増幅回路、４・・・選局兼
モード制御回路、Ｓ１，Ｓ２，Ｓ３・・・モード切換用
スイッチ。Fig. 1 is a circuit block diagram showing one embodiment of the present invention;
FIG. 3 is an explanatory diagram showing the mute operation, and FIG. 3 is a circuit block diagram showing the main parts of an SHF broadcast receiver equipped with a conventional audio mute circuit. DESCRIPTION OF SYMBOLS 1... Audio signal demodulation circuit, 2... Audio signal switching circuit, 3A, 3B... Audio signal amplification circuit, 4... Tuning and mode control circuit, S1, S2, S3... Mode switching Switch for.
Claims (1)
声信号の復調再生を行なう音声信号復調回路と、この復
調回路から出力される二組の音声信号をそれぞれ増幅す
る二系統の音声信号増幅回路と、前記復調回路で再生さ
れた各音声信号の導出モードの切換を行なうと共に、チ
ャンネル選択時は第１のミュート信号を出力し、上記モ
ードの切換時は第２のミュート信号を出力する制御回路
とを備えるＳＨＦ放送受信機に於いて、前記第１のミュ
ト信号は常に前記二系統の章声信号増幅回路の各々に印
加され、第２のミュート信号は上記両増幅回路に同一の
音声信号が入力される恭通モードのときのみ婆の各増幅
回路に印加され、その他のモードのときはモー１切換が
行なわれた癲の増幅回路にのみ印加されるようにしたＳ
ＨＦ放送受信機の音声ミュート回路。An audio signal demodulation circuit that demodulates and reproduces two sets of audio signals transmitted within one channel of SHF broadcasting, and two audio signal amplification circuits that amplify each of the two sets of audio signals output from this demodulation circuit. and a control circuit that switches the derivation mode of each audio signal reproduced by the demodulation circuit, outputs a first mute signal when selecting a channel, and outputs a second mute signal when switching the mode. In the SHF broadcast receiver, the first mute signal is always applied to each of the two voice signal amplification circuits, and the second mute signal is applied when the same audio signal is applied to both the amplification circuits. S is applied to each of the amplifier circuits only when the mode is inputted, and when it is in other modes, it is applied only to the amplifier circuit where the mode 1 switching has been performed.
Audio mute circuit for HF broadcast receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984073305U JPS60186731U (en) | 1984-05-18 | 1984-05-18 | Audio mute circuit of SHF broadcast receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984073305U JPS60186731U (en) | 1984-05-18 | 1984-05-18 | Audio mute circuit of SHF broadcast receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60186731U true JPS60186731U (en) | 1985-12-11 |
| JPH0241957Y2 JPH0241957Y2 (en) | 1990-11-08 |
Family
ID=30612540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984073305U Granted JPS60186731U (en) | 1984-05-18 | 1984-05-18 | Audio mute circuit of SHF broadcast receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60186731U (en) |
-
1984
- 1984-05-18 JP JP1984073305U patent/JPS60186731U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0241957Y2 (en) | 1990-11-08 |
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