JPH03484U - - Google Patents
Info
- Publication number
- JPH03484U JPH03484U JP1989059940U JP5994089U JPH03484U JP H03484 U JPH03484 U JP H03484U JP 1989059940 U JP1989059940 U JP 1989059940U JP 5994089 U JP5994089 U JP 5994089U JP H03484 U JPH03484 U JP H03484U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- tuning
- channel
- predetermined
- television receiver
- 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
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Structure Of Receivers (AREA)
Description
第１図は本考案の一実施例を示す一般的なブロ
ツク図、第２図は第１図に示した本考案一実施例
の具体的回路構成例を示す図である。
１……同調回路、２……同調コンデンサ、３…
…スイツチ、４……セツテイングチヤンネル切換
えスイツチ、５……検波回路、６……コンパレー
タ回路、７……システムコントロール用マイコン
である。
FIG. 1 is a general block diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing an example of a specific circuit configuration of the embodiment of the present invention shown in FIG. 1... Tuning circuit, 2... Tuning capacitor, 3...
...switch, 4...setting channel changeover switch, 5...detection circuit, 6...comparator circuit, 7...system control microcomputer.
Claims (1)
定のチヤンネル周波数に同調する同調回路と、同
同調回路の出力信号を検波する検波回路と、同検
波回路の直流出力電圧により駆動されるコンパレ
ータ回路と、同コンパレータ回路出力信号により
チヤンネルの選局制御信号を出力するシステムマ
イコンを有し、同システムマイコンにて所定入力
チヤンネルを自動的に選局することを特徴とする
テレビ受信機。 (2) 前記同調回路の同調コンデンサを切換えて
複数の所定チヤンネル周波数に対応するスイツチ
回路を有し、所定チヤンネルを選択してなる請求
項(1)記載のテレビ受信機。[Scope of claim for utility model registration] (1) In the antenna circuit of a television receiver, a tuning circuit that tunes to a predetermined channel frequency, a detection circuit that detects the output signal of the tuning circuit, and a DC output voltage of the detection circuit. and a system microcomputer that outputs a channel selection control signal based on the output signal of the comparator circuit, and the system microcomputer automatically selects a predetermined input channel. Receiving machine. (2) The television receiver according to claim (1), further comprising a switch circuit that switches a tuning capacitor of the tuning circuit to correspond to a plurality of predetermined channel frequencies, and selects a predetermined channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989059940U JPH03484U (en) | 1989-05-24 | 1989-05-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989059940U JPH03484U (en) | 1989-05-24 | 1989-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03484U true JPH03484U (en) | 1991-01-07 |
Family
ID=31586884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989059940U Pending JPH03484U (en) | 1989-05-24 | 1989-05-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03484U (en) |
-
1989
- 1989-05-24 JP JP1989059940U patent/JPH03484U/ja active Pending
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