Method and system for regulating backlight of liquid crystal display television

A technology for LCD TV and backlight adjustment, which is applied in the field of TV, can solve the problem that the backlight of LCD TV cannot be adjusted automatically in multiple variables, and achieve the effect of protecting human eyesight and achieving a harmonious and unified effect

Inactive Publication Date: 2009-10-28
SHENZHEN TCL NEW-TECH CO LTD
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method and system for adjusting the backlight of LCD TV, aiming ...

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  • Method and system for regulating backlight of liquid crystal display television
  • Method and system for regulating backlight of liquid crystal display television
  • Method and system for regulating backlight of liquid crystal display television

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Embodiment Construction

[0037] The technical solution provided by the embodiments of the present invention is to detect factors closely related to the visual experience of TV viewers, such as the distance between the viewer and the TV screen, the brightness of ambient light, etc., and then adjust the brightness of the TV screen according to the detection results, thereby realizing the adjustment of the brightness of the TV screen. auto-adjust.

[0038] The method provided by the embodiment of the present invention includes the following steps:

[0039] 1. The ambient light detection module detects the brightness of the ambient light, and then the MCU calculates the best reference brightness value L2 according to the detection result, that is, the ambient light coefficient Ls is determined to be 1.0;

[0040] 2. The distance detection module detects the distance between the viewer and the TV screen, and then the MCU calculates the average useful brightness value Ld of the picture corresponding to the ...

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Abstract

The invention is suitable to the technical field of liquid crystal display televisions and provides a method and a system for regulating backlight of a liquid crystal display television. The method comprises the following steps: a, the distance of between a watcher and the liquid crystal display television and the ambient brightness of the environment where the liquid crystal display television is in are detected, and then the average useful brightness value L of a liquid crystal display frame of the liquid crystal display television is determined; b, the backlight voltage of the liquid crystal display television is regulated according to the average useful brightness value L of the liquid crystal display frame, and the liquid crystal display television controls the backlight according to the backlight voltage. The technical scheme describes the relations of the ambient brightness, the distance between the watcher and the television, the watcher attribute and the liquid crystal display brightness, therefore, human eyesight is indirectly protected while the best sight sensibility is provided for the watcher, and the human eye protection and the frame reception effect are united.

Description

technical field [0001] The invention belongs to the technical field of televisions, in particular to the backlight control technology of liquid crystal televisions. Background technique [0002] There are two types of backlight adjustment methods for LCD TVs: active and passive. The active type usually leaves the adjustable variable to the user to adjust by himself, and its implementation is relatively simple; while the automatic adjustment of the backlight through the external environment light feedback (such as a photosensitive sensor) is called passive backlight adjustment. The active adjustment method cannot respond to changes in the external environment such as changes in the ambient light in real time, but only uses a photosensitive sensor to detect changes in the external ambient light to achieve changes in the brightness mapping of the LCD screen. It is univariate, and this univariate adjustment method exists weakness is: [0003] 1. The external brightness obtaine...

Claims

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Application Information

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IPC IPC(8): G09G3/36G09G3/34
Inventor 张常省陈纪颖
Owner SHENZHEN TCL NEW-TECH CO LTD
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