JPS6011389U

JPS6011389U - image display device

Info

Publication number: JPS6011389U
Application number: JP10259683U
Authority: JP
Inventors: 芳春森
Original assignee: 三洋電機株式会社
Priority date: 1983-06-30
Filing date: 1983-06-30
Publication date: 1985-01-25

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の画像表示装置のブロック図、第２図はこ
の考案の画像表示装置の１実施例の要部のブロック図、
第３図は第２図の水平同期パルスの波形図である。３ｒ、　　３ｇ、　　３ｂ・・・・・・第１ないし第３
色信号入力端子、３ｔ・・・・・・テレビ信号入力端子
、４・・・・・・色信号処理回路、５・・・・・・レベ
ル調整回路、７ａ〜７ｄ・・・・・・第１ないし第４切
り換えスイッチ、８・・・・・・テレビ信号処理回路、
９・・・・・・受像管ドライブ回路、１２ａ〜１２Ｃ・
・・・・・第１ないし第３コンデンサ、１３ａ〜１３Ｃ
・・・・・・第１ないし第３抵抗、１４ａ〜１４Ｃ・・
・・・・電源端子、１５ａ〜１５Ｃ・・・・・・第１な
いし第３トランジスタ、ｒｙ、　ｇｙ、　ｂｙ・・・・
・・第１ないし第３色差信号出力端子。FIG. 1 is a block diagram of a conventional image display device, and FIG. 2 is a block diagram of essential parts of an embodiment of the image display device of this invention.
FIG. 3 is a waveform diagram of the horizontal synchronizing pulse of FIG. 2. 3r, 3g, 3b... 1st to 3rd
Color signal input terminal, 3t...TV signal input terminal, 4...Color signal processing circuit, 5...Level adjustment circuit, 7a to 7d...No. 1 to 4th changeover switch, 8...TV signal processing circuit,
9... Picture tube drive circuit, 12a to 12C.
...First to third capacitors, 13a to 13C
...First to third resistors, 14a to 14C...
...Power terminal, 15a to 15C...First to third transistor, ry, gy, by...
...First to third color difference signal output terminals.

Claims

[Scope of utility model registration request]

The three primary color color signals inputted to the first to third color signal input terminals and the three primary color color difference signals formed from the television signal are selectively supplied to the picture tube drive circuit, based on the respective color signals. In an image display device that selectively displays one image and the other image based on each of the color difference signals on a picture tube, first to third capacitors each having one end to which each color signal is input, A terminal is connected to the other end of each of the capacitors, and an output terminal is connected to the drive circuit, and is provided between the power terminal and the other end of each of the capacitors. and first to third color difference signal output terminals respectively connected to the other input terminal of each of the changeover switch bodies, and each of the color difference signals is output during the display period of the one image. The terminal is held at the pedestal DC level for each terminal, and the color difference signal is set to the pedestal DC level by processing the television signal during the display period of the other image. The television signal processing circuit outputs from the output terminal, and the other end of each capacitor is connected to each of the color difference signal output terminals through conduction by a horizontal synchronizing pulse during the display period of the one image, and the other end of the capacitor is connected to the color difference signal output terminal, a first one for maintaining the DC level at the other end of each capacitor at the DC level for each pedestal during the display period;
or a third opening/closing switch body.