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Lighteness adjusting apparatus and method thereof

A brightness adjustment and brightness technology, applied in cathode ray tube indicators, instruments, static indicators, etc., can solve the problems of picture brightness adjustment, contrast reduction, affecting video display effect, etc., to achieve the best video quality and improve picture contrast. Effect

Active Publication Date: 2007-09-26
QUANTA COMPUTER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned prior art only adjusts the backlight according to the ambient light, and does not adjust according to the brightness and darkness of the screen
When the ambient light is dark and the picture is also dark, the contrast will still drop, which will affect the display effect of the video

Method used

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  • Lighteness adjusting apparatus and method thereof
  • Lighteness adjusting apparatus and method thereof
  • Lighteness adjusting apparatus and method thereof

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Embodiment Construction

[0022] Please refer to FIG. 1 . FIG. 1 is a functional block diagram of a brightness adjustment device 1 according to a preferred embodiment of the present invention. In this embodiment, an input video sequence (Video sequence) is input to a display system (Display system) (not shown), wherein the input video sequence includes N image frames (Image frame), where N is a natural number. The brightness adjusting device 1 of the present invention is used for adjusting the output backlight brightness of the i-th image frame in the input video sequence 10 in a display system (not shown), where i is an integer index in the range of 1 to N. The input video sequence 10 conforms to the RGB color space or other color spaces.

[0023] As shown in Figure 1, the brightness adjustment device 1 includes a light sensing module (Light sensing module) 12, an analog / digital converter (Analog to digital converter, AD converter) 14, a storage unit (Memory unit) 16, an image processing module ( Ima...

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Abstract

This invention relates to one brightness adjust device in small display system to adjust input visual frequency sequence and to send the ith image frame to output brightness, which comprises light sense module, memory unit, image process module and aphototropism module, wherein, the light sensor module is to sense current environment light; memory unit is to store comparison list to record multiple environment lights with each one responding multiple brightness rate and multiple aphototropism adjust parameters; the image process module is to compute ith image frame brightness express rate.

Description

technical field [0001] The present invention relates to a brightness adjustment device and method thereof, in particular to a brightness adjustment device and method for adjusting output brightness of an input video sequence (Video sequence) in a display system (Display system). Background technique [0002] The brightness of the existing liquid crystal display (LCD) is produced by the backlight module. By controlling the twist of the liquid crystal, the transmittance of the backlight can be changed to determine the brightness of the video. At present, most LCD display methods are based on cold cathode fluorescent lamps (Cold cathode fluorescent lamp, CCFL). When the user uses the LCD to watch a bright picture in a dark ambient light, the eyes will feel uncomfortable due to the strong light. When using an LCD to watch a dark picture, the contrast of the overall picture will decrease because the brightness of the backlight is fixed. [0003] In the prior art, the existing L...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34G09G3/36G09G3/20G09G5/10G02F1/133
Inventor 黄煜翔徐名黉李信宏
Owner QUANTA COMPUTER INC