一种新型白平衡仪的研究

本文介绍一种新一代的白平衡仪。它用二组色度型探测器分别测量彩色电视机亮暗白场的三刺激值Ｘｒ、Ｙ、Ｚ得到色品坐标和亮度；并利用刺激值Ｘｒ、Ｙ、Ｚ与红绿蓝三色光强Ｒ、Ｇ、Ｂ间的关系，得到三角光的相对强度。

Research on a New Type of White Balance Meter

In this paper,we introduce a new type of white balance meter,which uses chroma probes to measure the high and low luminous white fields tristimulus values X r,Y and Z of color TV,and then the chromaticity coordinates of the fields can been obtained.According to the tristimulus values,the luminous intensities of red,green and blue lights can been known from the relation of them.The white belance signal and brightness feedback circuit are designed inside the meter.The white balance adjustment process and results are showed by numerical and analogue displays.In addition,these can been transmitted by series port to the computer and finely showed by the monitor,also the white balance automatic adjustment can been realized by the color TV with I 2C bus.