JPS59114631U - Automatic channel selection tuner - Google Patents
Automatic channel selection tunerInfo
- Publication number
- JPS59114631U JPS59114631U JP673583U JP673583U JPS59114631U JP S59114631 U JPS59114631 U JP S59114631U JP 673583 U JP673583 U JP 673583U JP 673583 U JP673583 U JP 673583U JP S59114631 U JPS59114631 U JP S59114631U
- Authority
- JP
- Japan
- Prior art keywords
- tuner
- automatic tuning
- channel selection
- automatic channel
- generating
- 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
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Noise Elimination (AREA)
- Circuits Of Receivers In General (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図は自動選局チューナの概略を示すブロック図、第
２図は第１図のブロックの１部具体例を示す回路図、第
３図は第２図の回路の動作を示す波形図、第４図は本考
案の実施例の回路図、第５図は第４図の回路動作を説明
するための図である。
主要部分の符号の説明、１・・・・・・受信感度設定回
路、２・・・・・・コントローラ、８・・・・・・ミュ
ーティング回路、９・・・・・・π℃回路、１０・・・
・・・サーチストップ信号発生回路、Ｑ工・・・・・・
スイッチングトランジスタ、Ｑ３・・・・・・制御トラ
ンジスタ。FIG. 1 is a block diagram schematically showing an automatic channel selection tuner, FIG. 2 is a circuit diagram showing a specific example of a part of the blocks in FIG. 1, and FIG. 3 is a waveform diagram showing the operation of the circuit in FIG. 2. FIG. 4 is a circuit diagram of an embodiment of the present invention, and FIG. 5 is a diagram for explaining the operation of the circuit shown in FIG. Explanation of the symbols of the main parts, 1... Receiving sensitivity setting circuit, 2... Controller, 8... Muting circuit, 9... π℃ circuit, 10...
...Search stop signal generation circuit, Q engineering...
Switching transistor, Q3... Control transistor.
Claims (1)
ング信号をなすミューティング信号を発生スる手段と、
このミューティング信号の発生期間受信感度を低下せし
める受信感度切替手段とを含む自動選局チューナであっ
て、自動選局動作時に受信局が存在したことを検出して
自動選局動作停止のためのストップ信号を発生する手段
と、このストップ信号の発生に応答して前記受信感度切
替手段あ動作停止をなす手段とを含むことを特徴とする
チューナ。means for generating a muting signal for cutting off noise in the selection poem;
The automatic tuning tuner includes a reception sensitivity switching means for reducing the reception sensitivity during the generation period of the muting signal, and the automatic tuning tuner detects the presence of a receiving station during the automatic tuning operation and stops the automatic tuning operation. A tuner comprising: means for generating a stop signal; and means for stopping the operation of the receiving sensitivity switching means in response to generation of the stop signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP673583U JPS59114631U (en) | 1983-01-20 | 1983-01-20 | Automatic channel selection tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP673583U JPS59114631U (en) | 1983-01-20 | 1983-01-20 | Automatic channel selection tuner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59114631U true JPS59114631U (en) | 1984-08-02 |
Family
ID=30138281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP673583U Pending JPS59114631U (en) | 1983-01-20 | 1983-01-20 | Automatic channel selection tuner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59114631U (en) |
-
1983
- 1983-01-20 JP JP673583U patent/JPS59114631U/en active Pending
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