JPH0246476U - - Google Patents
Info
- Publication number
- JPH0246476U JPH0246476U JP1988125908U JP12590888U JPH0246476U JP H0246476 U JPH0246476 U JP H0246476U JP 1988125908 U JP1988125908 U JP 1988125908U JP 12590888 U JP12590888 U JP 12590888U JP H0246476 U JPH0246476 U JP H0246476U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- controller
- channel selection
- circuit
- station
- 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 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案を用いたカラーテレビの選局表
示回路の回路図。第２図は第１図の動作を示すタ
イミンングチヤート図。第３図ａ，ｂは選局表示
の例を示す図。
１…電子同調チユーナ、２…映像検波回路、３
…映像増幅器、４…色復調回路、５…表示信号重
畳回路、６…画像表示部、７…同期分離回路、８
…コントローラ。
FIG. 1 is a circuit diagram of a color television channel selection display circuit using the present invention. FIG. 2 is a timing chart showing the operation of FIG. 1. FIGS. 3a and 3b are diagrams showing examples of channel selection displays. 1...Electronic tuning tuner, 2...Video detection circuit, 3
...Video amplifier, 4...Color demodulation circuit, 5...Display signal superimposition circuit, 6...Image display section, 7...Synchronization separation circuit, 8
…controller.
Claims (1)
選局表示回路において (b) 電子同調チユーナからのＩＦ信号を検波し
、映像信号を出力する映像検波回路 (c) 該映像信号から同期信号を抽出する同期分
離回路 (d) 選局周波数の表示を制御し、かつ局の有無
を判別し、その判別信号を出力するコントローラ (e) 前記コントローラの局有無により出力され
る判別信号により、その利得を変られる増幅器 (f) 前記コントローラによつて出力される選局
状態の表示信号を、映像信号に重畳する信号重畳
回路。 （ｇ） 前記増幅器を前記信号重畳回路より前段
に置くことにより、前記コントローラの信号で局
の有無により選局状態の表示用信号と映像信号の
振幅差を可変し、その両信号を重畳することを特
徴とする選局表示回路。[Scope of Claim for Utility Model Registration] (a) In a television channel selection display circuit that displays the channel selection status on an image display section, (b) A video detection circuit that detects an IF signal from an electronic tuner and outputs a video signal. (c) A synchronization separation circuit that extracts a synchronization signal from the video signal. (d) A controller that controls the display of the selected channel frequency, determines the presence or absence of a station, and outputs the determination signal. (e) A controller that determines whether or not a station is present in the controller. (f) an amplifier whose gain can be changed in accordance with a discrimination signal outputted by the controller; (g) By placing the amplifier before the signal superimposing circuit, the amplitude difference between the channel selection display signal and the video signal is varied depending on the presence or absence of a station using the signal from the controller, and both signals are superimposed. A channel selection display circuit featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988125908U JPH0246476U (en) | 1988-09-27 | 1988-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988125908U JPH0246476U (en) | 1988-09-27 | 1988-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0246476U true JPH0246476U (en) | 1990-03-29 |
Family
ID=31376931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988125908U Pending JPH0246476U (en) | 1988-09-27 | 1988-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246476U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6226985A (en) * | 1985-07-26 | 1987-02-04 | Mitsubishi Electric Corp | Television receiver |
-
1988
- 1988-09-27 JP JP1988125908U patent/JPH0246476U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6226985A (en) * | 1985-07-26 | 1987-02-04 | Mitsubishi Electric Corp | Television receiver |
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