JPS5976170U - TV tuner audio information processing circuit - Google Patents
TV tuner audio information processing circuitInfo
- Publication number
- JPS5976170U JPS5976170U JP17257182U JP17257182U JPS5976170U JP S5976170 U JPS5976170 U JP S5976170U JP 17257182 U JP17257182 U JP 17257182U JP 17257182 U JP17257182 U JP 17257182U JP S5976170 U JPS5976170 U JP S5976170U
- Authority
- JP
- Japan
- Prior art keywords
- audio information
- information processing
- processing circuit
- signal
- intermediate frequency
- 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
- Television Receiver Circuits (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のテレビチューナのブロック図、第２図は
本考案の実施例のテレビチューナのブロック図、第３図
は第２図のブロックにおけるＡＧＣアンプの一具体例回
路図である。
主要部分の符号の説明、３・・・・・・ＩＦアンプ、６
゜１６・・・・・・ビデオアンプ、１５・・・・・・Ａ
ＧＣアンプ。FIG. 1 is a block diagram of a conventional television tuner, FIG. 2 is a block diagram of a television tuner according to an embodiment of the present invention, and FIG. 3 is a circuit diagram of a specific example of an AGC amplifier in the block of FIG. 2. Explanation of symbols of main parts, 3...IF amplifier, 6
゜16...Video amplifier, 15...A
GC amplifier.
Claims (2)
入力として音声情報を抽出するようにしたテレビチュー
ナの音声情報処理回路であって、前記中間周波信号の映
像信号による振幅変動成分を除去する除去手段と、前記
除去手段の出力を用いて音声信号の検波をなす手段とを
含むことを特徴とする音声情報処理回路。(1) An audio information processing circuit for a television tuner that extracts audio information by inputting an intermediate frequency signal of an intermediate frequency signal processing stage of a received signal, the circuit removing an amplitude fluctuation component of the intermediate frequency signal due to a video signal. 1. An audio information processing circuit comprising: removal means for detecting an audio signal; and means for detecting an audio signal using the output of the removal means.
得が制御される中間周波増幅器を含むことを特徴とする
実用新案登録請求の範囲第１項記載の音声情報処理回路
。(2) The audio information processing circuit according to claim 1, wherein the removing means includes an intermediate frequency amplifier whose gain is controlled according to the level of the video signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17257182U JPS5976170U (en) | 1982-11-15 | 1982-11-15 | TV tuner audio information processing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17257182U JPS5976170U (en) | 1982-11-15 | 1982-11-15 | TV tuner audio information processing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5976170U true JPS5976170U (en) | 1984-05-23 |
Family
ID=30376142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17257182U Pending JPS5976170U (en) | 1982-11-15 | 1982-11-15 | TV tuner audio information processing circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5976170U (en) |
-
1982
- 1982-11-15 JP JP17257182U patent/JPS5976170U/en active Pending
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