Brightness adjuster and adjusting method

A grayscale adjustment and brightness technology, applied in lighting devices, electric lamp circuit layouts, cathode ray tube indicators, etc., can solve the problems of human eye load, pupil cannot be zoomed in real time, eye fatigue, etc., to avoid drastic changes, reduce human Excessive burden on the eyes, the effect of enhancing the sense of contrast
CN1855208AActive Publication Date: 2006-11-01QUANTA COMPUTER INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QUANTA COMPUTER INC
Publication Date
2006-11-01

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Abstract

A brightness adjustment installment for a display system, adjust the No.i image brightness of the inputting image list which includes some images and every image consists of some pixels. The installment includes: a first computational module computes a present brightness indicative rate of the No.i image, a second computational module computes a indicative rate of average brightness, a judgment module chooses an indicative rate of the outputting brightness between the indicative rate of the present brightness and the indicative rate of the average brightness, a confirming module which saves some groups of brightness indicative rate and the corresponding gain value, and determine the gain value which correspond to the output brightness indicative rate, a adjustment module which multiply the gray-scale value of every pixel in the No.i image and the gain value of the outputting brightness indicative rate to completes the adjustment of the brightness.
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Description

technical field

[0001] The invention relates to a device and method for adjusting output brightness of an input image sequence (Video sequence) in a display system. In particular, the brightness adjusting device of the present invention is applicable to various color spaces. Background technique

[0002] Flat panel display (Flat panel display) is the main trend of future displays, and liquid crystal display (LCD) is the most attention-grabbing among them. Because LCD has the advantages of thin thickness, light weight, low radiation, low power consumption, high resolution and high brightness, and its application range covers personal computers, commercial billboards and home theaters, etc., it can be said to be the most widely used flat-panel display. .

[0003] The brightness of the existing LCD is produced by the backlight module, and the pass rate of the backlight can be changed by controlling the twist of the liquid crystal to determine the brightness (gray scale) of th...

Claims

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