Patent ID: 9626892
Date: 2017-04-18
CPC Classifications: G09G

Claim:
1. An optimization system of real-time LCD white balance selection, comprising: an RGB to YUV conversion unit for receiving an image signal and converting the image signal from an RGB domain to a YUV domain to generate a first YUV image signal; a white balance adjustment unit connected to the RGB to YUV conversion unit for performing a white balance adjustment on the first YUV image signal to generate a second YUV image signal, wherein the white balance adjustment unit includes: a white point setting unit for storing multiple sets of white point settings, each set having a plurality of first chrominance shift signals and a plurality of second chrominance shift signals; a setting generator connected to the white point setting unit for receiving the plurality of first chrominance shift signals and the plurality of second chrominance shift signals in the multiple sets of white point settings, and a white balance level selection signal for generating respective N first chrominance shift interpolation signals and N second chrominance shift interpolation signals, where N is a positive integer; a U/V shift value generator connected to the setting generator for receiving the N first chrominance shift interpolation signals and the N second chrominance shift interpolation signals to generate a first chrominance offset and a second chrominance offset; and a white point adjustment unit connected to the U/V shift value generator and the RGB to YUV conversion unit for adjusting the first YUV image signal based on the first chrominance offset and the second chrominance offset to generate the second YUV image signal; and a YUV to RGB conversion unit for converting the second YUV image signal from the YUV domain to the RGB domain, wherein the U/V shift value generator generates the first chrominance offset and the second chrominance offset by interpolation.