JPS60132080U

JPS60132080U - Color image monitor white balance adjustment device

Info

Publication number: JPS60132080U
Application number: JP1853384U
Authority: JP
Inventors: 進武藤; 矢島　俊朗
Original assignee: 株式会社　シバソク
Priority date: 1984-02-10
Filing date: 1984-02-10
Publication date: 1985-09-04
Also published as: JPH0321108Y2

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図は本考案カラー画像モニタ白バランス調整装置の
基本構成を示すブロック線図、第２図は同じくその詳細
構成の一例を示すブロック線図、第３図Ａ〜Ｃ１第４図
Ａ、　Ｂ、第５図および第６図は同じくその白バランス
調整の種々の段階における処理過程を順次に示すケロー
チャート、第７図は残光補償の説明用タイミングチャー
トであを。１・・・較正用信号源、２Ｒ，２Ｇ、２Ｂ・・・減衰器
、３Ｒ，３Ｇ、３Ｂ、ＩＩＭ、１１Ｓ・・・増幅器、４
・・・カラー表示管、５Ｒ，５Ｇ、　５Ｂ・・・調整制
御部、６Ｈ，６Ｌ・・・保持メモリ、７Ｈ，７Ｌ・・・
基準メモリ、８Ｈ，８Ｌ、　　３０・・・比較器、９・
・・光センサ・プローブ、ＩＯＭ・・・主光電変換素子
、１０Ｓ・・・副光電変換素子、１２・・・外光相殺調
整用トリマ抵抗、１３・・・減算器、１４−１．１４−
２・・・モー　Ｆ　＋ｆＪ３換スイッチ、１５−１〜１
５−４・・・マニュアルセレクタスイッチ、１６・・・
初期設定用スイッチ、ｌ　７．−ＲＨ’、　　ｌ　７−
ＧＨ，ｌ　７−ＢＨ・・・増幅器初期設定用スイッチ、
ｌ　７−ＲＬ、　　ｌ　７−ＧＬ。１７−ＢＬ・・・減衰器初期設定用スイッチ、１８−Ｒ
Ｈ，１Ｂ−ＧＨ，１Ｂ−”ＢＨ，１８−ＲＬ、　”１８
−ＧＬ、１３−ＢＬ・・・初期設定値入力用可変抵抗、
２０Ｙ・・・輝度信号源、２０Ｃ・・・色度信号源、２
１・・・マトリックス回路、２２，２２Ｒ，２２Ｇ、２
２、Ｂ・・・Ｄ−Ａ変換器、２３・・・カウンタ、２４
・・・リミッタ、２５・・・制御ユニット、２６・・・
ピークホールド回路、２７・・・Ａ−Ｄ変換器、２８・
・・平均値回路、２９・・・メモリ装置、３１Ｒ，３１
Ｇ、　　３１Ｂ・・・γ補正回路、４０・・・信号レベ
ル切換制御回路、４１・・・微分回路、４２・・・零ク
ロス検出回路、４３・・・遅延回路。埜 α〜」」口轡出１　　　ｔｉＬ口罰１Ｌｉ１３８　　　口±Ｖ想月一１吠ｐβ吃１トＳ　１０１　　１　〉スイッチにで銅竪する　　　　　　１１　
　　　　　　　　　１−１　　マユ１アＩＬ／ｌし７７
をＲ−Ｌ、Ｇ−Ｌ、　　ｉ’■゛　　　謬彌像労寵下５〜Ｓ＋６FIG. 1 is a block diagram showing the basic configuration of the color image monitor white balance adjustment device of the present invention, FIG. 2 is a block diagram showing an example of its detailed configuration, FIGS. 3 A to C1, and FIGS. 4 A and B. , FIGS. 5 and 6 are Keroh charts sequentially showing the processing steps at various stages of white balance adjustment, and FIG. 7 is a timing chart for explaining afterglow compensation. 1... Calibration signal source, 2R, 2G, 2B... Attenuator, 3R, 3G, 3B, IIM, 11S... Amplifier, 4
...Color display tube, 5R, 5G, 5B...Adjustment control section, 6H, 6L...Holding memory, 7H, 7L...
Reference memory, 8H, 8L, 30... Comparator, 9.
... Optical sensor probe, IOM... Main photoelectric conversion element, 10S... Sub-photoelectric conversion element, 12... Trimmer resistor for external light offset adjustment, 13... Subtractor, 14-1.14-
2...Mo F +fJ3 conversion switch, 15-1~1
5-4...Manual selector switch, 16...
Initial setting switch, l 7. -RH', l 7-
GH, l 7-BH...Amplifier initial setting switch,
l7-RL, l7-GL. 17-BL...Attenuator initial setting switch, 18-R
H, 1B-GH, 1B-"BH, 18-RL, "18
-GL, 13-BL...variable resistor for initial setting value input,
20Y... Luminance signal source, 20C... Chromaticity signal source, 2
1... Matrix circuit, 22, 22R, 22G, 2
2, B...D-A converter, 23... Counter, 24
...Limiter, 25...Control unit, 26...
Peak hold circuit, 27...A-D converter, 28.
...Average value circuit, 29...Memory device, 31R, 31
G, 31B...γ correction circuit, 40...signal level switching control circuit, 41...differentiation circuit, 42...zero cross detection circuit, 43...delay circuit.埜α〜” ” verbal out 1 tiL verbal punishment 1 Li 138 mouth±V sozukiichi 1 barkpβ 吃1toS 10 1 1 〉Switch with copper 11
1-1 Mayu 1AIL/lshi77
R-L, G-L, i'■゛謬彌子Ｇａｒｏｎ 5 〜S+6

Claims

[Scope of utility model registration request]

(1) In a color image monitor equipped with a color display tube and signal level adjustment means and amplification means for each primary color for input image signals, an adjustment signal source that generates a reference input image signal for each primary color, and the color display. a photoelectric conversion means for receiving display image light of the tube; a memory means for storing a reference level corresponding to the reference light of the color display tube; and a converted output from the photoelectric conversion means and the reference level read from the memory means. a comparison means for comparing seven images, and a comparison means for comparing seven images corresponding to the display images of the color display tube when reference input image signals of at least a high signal level and a low signal level are sequentially supplied for each primary color from the adjustment signal source. Based on the comparison output from the comparing means, the signal level adjusting means is feedback-controlled for each primary color for the high signal level, and the clamping potential of the amplifying means is controlled for each primary color for the low signal level. comprising a control means for performing feedback control; and a switching means for switching the signal level of the reference input image signal from the adjustment signal source at a timing related to the conversion output from the photoelectric conversion means; A color image monitor white balance adjustment device, characterized in that the white balance of the color display tube is adjusted sequentially.

(2) Utility Model Registration Scope of Claims 1. The apparatus according to claim 1, further comprising an auxiliary photoelectric conversion means for receiving external light incident on the color display tube, and converting the converted output of the auxiliary photoelectric conversion means into the photoelectric conversion means. A color image monitor white balance adjustment device, characterized in that the conversion output of the color image monitor is corrected.

(3) In the device according to claim 1 or 2 of the utility model registration, the circuit connection corresponding to the high signal level and the circuit connection corresponding to the low signal level are arranged in a predetermined order for each primary color. - A color image monitor white balance adjustment device, characterized in that the white balance adjustment device for an image monitor is provided with means for automatically adjusting the white balance of the color display tube.