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Backlight adjusting method and electronic device with backlight adjusting function

A backlight adjustment, electronic device technology, applied in lighting devices, electric lamp circuit layout, light source and other directions, can solve the problem of image display quality degradation, affecting image quality, etc.

Active Publication Date: 2014-02-12
AMBIT MICROSYSTEMS (SHANGHAI) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a problem with this backlight brightness adjustment method. For different input images, random increase or decrease of backlight brightness will affect the output image quality
Generally speaking, when the brightness of the backlight is reduced, the image display quality is also reduced

Method used

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  • Backlight adjusting method and electronic device with backlight adjusting function
  • Backlight adjusting method and electronic device with backlight adjusting function

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] Please refer to figure 1 . It is a schematic diagram of a module structure of an electronic device 100 with a backlight adjustment function in an embodiment of the present invention. The electronic device 100 includes a main control unit 30 and a display unit 40 . The display unit 40 includes a liquid crystal display module 41 and a backlight module 42 .

[0023] In this embodiment, the main control unit 30 includes a backlight control module 31 , a brightness adjustment module 32 , a conversion module 33 and an image output module 34 .

[0024] The backlight control module 31 is used for controlling and adjusting the brightness of the backlight of the backlight module 42 in response to an adjustment signal. Specifically, the backlight control module 31 adjusts the brightness of the backlight of the backlight module 42 according to a backlight adjustment parameter α in response to an adjustment signal. Wherein, the backlight adjustment parameter α is a percentage of...

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Abstract

The invention provides a backlight adjusting method. The method includes the first step of responding to an adjusting signal including backlight adjusting parameters and controlling and adjusting the brightness of backlight according to the backlight adjusting parameters, the second step of adjusting the brightness of a YUV image signal in a YUV mode according to the brightness adjusting parameters when the brightness of the backlight is adjusted, the third step of converting the YUV image signal in the YUV mode to an RGB image signal in an RGB mode according to the adjusted brightness value, and the fourth step of outputting and displaying the RGB image signal obtained through conversion. Through the method, the brightness of the backlight is lowered while the brightness of the YUV image signal is adjusted. Consequently, the corresponding RGB image signal is correspondingly adjusted, and image color distortion and image display quality caused by the brightness reduction of the backlight are compensated and improved. The invention further provides an electronic device with the backlight adjusting function.

Description

technical field [0001] The invention relates to a backlight adjustment method, in particular to a backlight adjustment method without reducing image display quality and an electronic device with the backlight adjustment function. Background technique [0002] Most of the display screens of present TV sets, computer monitors, mobile phones and other multimedia playback devices are liquid crystal display screens. The liquid crystal display adopts a backlight structure. Usually, in order to save the power consumption of the liquid crystal display, a backlight brightness adjustment function is designed on the backlight module. Users can adjust the backlight brightness according to their own needs. However, there is still a problem in this backlight brightness adjustment method. For different input images, random increase or decrease of the backlight brightness will affect the output image quality. In general, when the brightness of the backlight is reduced, the image display qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36H05B37/02
Inventor 吴建陞
Owner AMBIT MICROSYSTEMS (SHANGHAI) LTD
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