Method and apparatus for liquid crystal image processing

An image processing and liquid crystal technology, applied in the field of liquid crystal image display processing, to achieve the effect of improving contrast, reducing background color, and reducing fatigue

Active Publication Date: 2009-02-11
SHENZHEN TCL IND RES INST
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a method and device for liquid crystal image processing, aiming to solve the problems of dynamic adjustment of backlight brightness of liquid crystal display and dynamic processing of video images

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  • Method and apparatus for liquid crystal image processing
  • Method and apparatus for liquid crystal image processing
  • Method and apparatus for liquid crystal image processing

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Embodiment Construction

[0046] The technical solution provided by the present invention is: firstly remove the DC component in the R / G / B signal of a frame image respectively, perform linear or non-linear amplification on the R / G / B signal from which the DC component has been removed, and then amplify On the basis of the AC component, a DC component smaller than the original DC component is added to output, and the brightness of the backlight is controlled according to the amplification factor of the AC component.

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0048] Generally, images contain a DC component, which is manifested in the image, that is, the image contras...

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Abstract

The invention discloses a method for processing a liquid crystal image and a device thereof. The method comprises the following steps: (1) amplifying alternating-current components of video signal components R / G / B in a frame of image according to a correcting function after removing a direct-current component from the each of the components R / G / B respectively; (2) supplementing a direct-current component which is lower than the removed direct-current component based on the amplified alternating-current components respectively, and outputting; and (3) reducing a backlight adjustment coefficient according to the correcting function so as to dynamically control the backlight brightness. The technical proposal provided by the invention can improve the depth of field and the three-dimensional effect of the displayed images, increase and expand the contrast of various images, reduce background color, and reduce fatigue due to watching TV; and realizes the dynamic control of the backlight of a liquid crystal display, so as to save energy consumption.

Description

technical field [0001] The invention belongs to the field of display technology, in particular to the technology of liquid crystal image display processing. Background technique [0002] The rapid development of display technology has made liquid crystal display devices replace CRT (cathode ray tube) display devices. , wide color gamut, and fast response. [0003] Compared with CRT display devices, LCD TVs in flat-panel TVs have the following defects in display: [0004] The backlight is a fixed brightness, which has nothing to do with the signal, because the light leakage of the liquid crystal light valve causes the contrast of the liquid crystal to be low; [0005] The general TV signal load is 30% of the full white field signal (100% level). If the signal is calculated according to 8BIT, the main part of the signal is below 128 gray levels. Because the backlight and the signal cannot be linked, nearly 50% of the signal will be wasted. Backlight luminous energy; these w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G3/34G09G3/20G09G5/02G09G5/10H04N9/64G02F1/133
Inventor 冯万良
Owner SHENZHEN TCL IND RES INST
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