Gamma correction buffer circuit, display device and anti-interference method

Abstract

The invention provides a gamma correction buffer circuit which comprises a judgment unit and a control unit. According to judgment unit, when a circuit system where the gamma correction buffer circuit is located is powered on, whether digital working voltage of the gamma correction buffer circuit is larger than or equal to threshold value voltage of the gamma correction buffer circuit or nor is judged. According to the control unit, when the digital working voltage is determined to be smaller than the threshold value voltage, an IIC serial bus of the gamma correction buffer circuit is prohibited from being operated, data are not allowed to be written into a storage unit of the gamma correction buffer circuit through the IIC serial bus, and when the digital working voltage is larger than or equal to the threshold value voltage, the control unit controls the IIC serial bus to be allowed to be operated, and the data can be written into the storage unit of the gamma correction buffer circuit through the IIC serial bus. The invention further provides an anti-interference method and a display device. According to the technical scheme, external disturbance can be prevented from affecting the data in a register of the gamma correction buffer circuit, the capacity of resisting the disturbance of a system is enhanced, and stability of the system is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a gamma correction buffer circuit, a display device and an anti-interference method. Background technique [0002] Due to the inconsistency of the electro-optical characteristics of the red, green and blue colors of the LCD TV display, the color difference of each gray scale is relatively large, and the color of each gray scale needs to be corrected, especially the gray scale error of the dark field is very obvious, and it cannot be adjusted by white balance. To clear the color error of each gray scale. Only after the colors of each gray scale are consistent, can the color temperature be adjusted to the required color temperature through the white balance adjustment of bright and dark fields. On the other hand, the brightness of the LCD TV display is relatively high. In order to increase the transmittance of the LCD TV display and better express colors, it is nece...

AI Technical Summary

Problems solved by technology

However, because this method uses the IIC bus form, it is susceptible to interference from other buses or power sources in the system. Therefore, the Gamma chip may be interfered, resulting in abnormal display of some gray-scale graphics cards on the LCD display or system abnormalities, which is harmful to consumers. adverse effects

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