JPH0213380U

JPH0213380U -

Info

Publication number: JPH0213380U
Application number: JP1988089949U
Authority: JP
Priority date: 1988-07-08
Filing date: 1988-07-08
Publication date: 1990-01-26

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例のカラーテレビジヨ
ン受像機を示すブロツク図、第２図は画像調整時
の画面表示の一例を示す説明図、第３図は第１図
の実施例の制御回路内の特徴的な部分の構成を示
すブロツク図、第４図は第１図の実施例の制御回
路の動作を説明するフローチヤートである。１…アンテナ、２…チユーナ、３…映像中間周
波増幅及び映像検波回路、４…映像信号処理回路
、５…色信号処理回路、６…マトリツクス回路、
７…スイツチ回路、８…受像管、９…選局制御回
路、１０…制御回路、１１…リモコン、１２…モ
ード選択スイツチ、１３…モード設定回路、１４
…キヤラクタジエネレータ、１５…入力回路、１
６…モード判別回路、１７…表示制御回路。 Fig. 1 is a block diagram showing a color television receiver according to an embodiment of the present invention, Fig. 2 is an explanatory diagram showing an example of a screen display during image adjustment, and Fig. 3 is a control diagram of the embodiment of Fig. 1. FIG. 4 is a block diagram showing the configuration of characteristic parts in the circuit, and FIG. 4 is a flowchart explaining the operation of the control circuit of the embodiment shown in FIG. DESCRIPTION OF SYMBOLS 1... Antenna, 2... Tuner, 3... Video intermediate frequency amplification and video detection circuit, 4... Video signal processing circuit, 5... Color signal processing circuit, 6... Matrix circuit,
7... Switch circuit, 8... Picture tube, 9... Tuning control circuit, 10... Control circuit, 11... Remote control, 12... Mode selection switch, 13... Mode setting circuit, 14
...Character generator, 15...Input circuit, 1
6...Mode discrimination circuit, 17...Display control circuit.

Claims

[Scope of Claim for Utility Model Registration] A receiving circuit that receives and selects a color television signal, converts it to a video intermediate frequency signal, amplifies it, and then performs video detection to obtain a baseband composite color video signal; a color signal processing circuit that inputs a composite color video signal, separates a carrier color signal from the composite color video signal, performs color demodulation to obtain a color difference signal, performs color adjustment and hue adjustment, and outputs the resultant signal; a video signal processing circuit that inputs a composite color video signal from a circuit, separates a luminance signal from the composite color video signal, performs image quality adjustment, brightness adjustment, contrast adjustment, DC reproduction, and outputs the result; and the color signal processing circuit. a matrix circuit which inputs the color difference signal from the video signal processing circuit and the luminance signal from the video signal processing circuit, creates three primary color signals and supplies them to the three-axis cathode of the picture tube; and a character generating means which generates characters such as letters and symbols. a switching means for switching between the three primary color signals from the matrix circuit and a character signal from the character generating means and supplying the same to the picture tube to superimpose the character on a normal image; a mode selection means for selecting a sepia or black and white video mode; a means for specifying various image adjustments and inputting the amount of adjustment by key; and a means for inputting a signal from the mode selection means to determine the video mode. mode determining means for setting the color signal processing circuit, the video signal processing circuit, and the matrix circuit to a function corresponding to each mode based on the determination output of the mode determining means; Display control means for controlling the character generation means in response to the discrimination output of the discrimination means and displaying on the picture tube the type of image adjustment necessary for each mode and the amount of adjustment thereof during image adjustment. Characteristic color television receiver.