Gamma adjusting device for video equipment
A gamma coefficient and adjustment device technology, applied in the direction of color signal processing circuits, etc., can solve the problems of complicated adjustment process and time-consuming, etc., and achieve the effect of simple adjustment
Inactive Publication Date: 2005-09-07
NANJING LG TONGCHUANG COLOR DISPLAYS SYST CO LTD
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Problems solved by technology
The traditional gamma adjustment method is not only complicated in the adjustment process, but also takes a lot of time
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The invention relates to a gray coefficient regulator of video equipment for regulating the white balance of video picture. The invention comprises a processor, converting the format of input video signal into digital signal compatible with display signal of the system; a display driver, regulating the gray coefficient (GAMMA) of the signal outputted by the processor and then outputting the regulated signal to a display device; a CPU, regulating the scale, color and gray coefficient of the gray coefficient-corrected picture displayed in the display device. As regulating the pictures of color TV sets or other video equipments, a user can very visually regulate the gray coefficient curve by display screen of display device, and also use the buttons to make the operations of scale change, color change, gray coefficient regulation, etc., thus quickly and simply regulating an optimum picture.
Description
technical field The invention is a technology adopted for adjusting white balance (WHITE BALANCE) on video equipment. Specifically, it is a gamma adjustment device for a video device in which a user can use a button to adjust a look-up table (LUT: LOOK-UP-TABLE) parameter according to a gamma (GAMMA) curve displayed on a display device (14) . Background technique Recently, TV sets that adopt panels such as LCD, DLP, and PDP continue to appear, but a common problem that these TV sets face is that all must solve the adjustment problem of white balance. As far as the TV set that adopts the CRT mode is concerned, because the VCD that outputs the analog signal has a register (REGISTER) that can specifically adjust the white balance, so in general, the TV set that adopts the CRT mode can easily solve the white balance problem. However, the output signals of new TVs such as DLP are digital signals, so the white balance function that VCD has can not be used. In order to solve t...
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IPC IPC(8): H04N9/73
Inventor 李相善
Owner NANJING LG TONGCHUANG COLOR DISPLAYS SYST CO LTD