White balance automatic adjusting system and method for color TV set

Abstract

The invention discloses a white balance automatic adjustment system for a color TV set and a method thereof, belonging to the field of system debug of the color TV set, and solving the problem that the white balance of the color TV set is adjusted with low efficiency and high cost. The system comprises a white balance measuring apparatus and the color TV set to be measured, wherein the white balance measuring apparatus is connected with a radio-frequency head of the color TV set to be measured through a cable, and a high-brightness probe and a low-brightness probe of the white balance measuring apparatus are respectively positioned in a high-brightness display area and a low-brightness display area outside a kinescope of the color TV to be measured; and the white balance measuring apparatus is connected with a microprocessor of the color TV to be measured through a communication interface. The method comprises the following steps: a measuring standard for the white balance is set; the white balance measuring apparatus sends a television signal used for the measurement of the white balance to the radio-frequency head of the color TV set to be measured; the high-brightness probe and the low-brightness probe capture white balance measured data; the microprocessor of the color TV set to be measured receives the measured data through the communication interference; and the microprocessor of the color TV set to be measured performs the white balance adjustment according to the measured data and the set measuring standard. The invention is suitable for the white balance adjustment for the color TV set.

Description

technical field [0001] The invention relates to the field of system debugging of a color TV, in particular to a system and method for automatically adjusting the white balance of a color TV. Background technique [0002] The color of the object will change due to the projected light, and the objects photographed under different light will have different color temperatures. When we look at the vast world with the naked eye, we have basically the same feeling for the same color under different lights: for example, when the sun rises in the morning, we see a white object and feel it is white; In the dim light at night, seeing a white object feels like it is still white. This is because the human brain has adapted to the color reproduction of objects under different light during the growth of human beings from birth. However, the picture tube of a color TV has no way to automatically correct the change of light like the human eye. Under different light, due to the unbalanced o...

AI Technical Summary

Problems solved by technology

However, this system needs to use peripheral equipment such as a computer to realize the automatic adjustment of white balance, the system is complex, and the relative cost is relatively high.

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