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Backlight control device and control method of backlight control device

A backlight control and backlight panel technology, applied in the direction of cathode ray tube indicators, instruments, static indicators, etc., can solve the problems of incorrect switching time, flickering of display devices, and reduced display quality, so as to avoid flickering and improve quality. Effect

Inactive Publication Date: 2011-08-17
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing content-adaptive backlight control technology, when the brightness of the backlight panel is switched, often due to the incorrect switching time, the picture displayed on the display device will flicker and the display quality will be reduced.

Method used

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  • Backlight control device and control method of backlight control device
  • Backlight control device and control method of backlight control device
  • Backlight control device and control method of backlight control device

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Embodiment Construction

[0025] Please refer to figure 1 , figure 1 It is a schematic diagram of a backlight control device 100 according to an embodiment of the present invention. The backlight control device 100 is used to control the brightness of the backlight panel 180 and includes an I / O interface 110 , a control register 121 , a memory 122 , an image analyzer 130 , a mode switch 140 , an image processor 150 and a backlight regulator 170 . Wherein, the I / O interface 110 receives the information DATA transmitted from the host terminal (host) 190 , and transmits the information DATA to the control register 121 and the memory 122 respectively. Here, the information DATA transmitted by the host terminal 190 generally includes image display data for the display panel and command data for controlling the operation of the backlight control device 100 . The image display data is sent to the memory 122 for storage, and the command data is sent to the control register 121 for temporary storage.

[0026...

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PUM

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Abstract

The invention provides a backlight control device and a control method of the backlight control device, wherein the backlight control device is used for controlling the luminance of a backlight board, and composed of an image analyzer and a mode switcher. The image analyzer receives current frame information and previous frame information, compares and obtains the variable quantity of the current frame information and the previous frame information. The mode switcher receives the variable quantity and sets a display mode for adjusting the luminance of the backlight board according to the variable quantity.

Description

technical field [0001] The present invention relates to a backlight control device and method, and in particular to a control device and method for a backlight panel of a display panel. Background technique [0002] In a passive light-emitting display device (such as a liquid crystal display device), providing a backlight as a light source is the most well-known technology. While the display quality of the display device is continuously improved due to the needs of users, the backlight panel is not only used to simply provide a light source. The brightness of the backlight is also adjusted according to different display conditions and power consumption, so that the performance of the display device can be effectively improved. [0003] Content adaptive backlight control (Content Adaptive Back-light Control, CABC) technology is a technology that utilizes the content of a displayed image to adjust the brightness of a backlight panel. This content-adaptive backlight control t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/10
Inventor 李重建李宗原林清淳
Owner NOVATEK MICROELECTRONICS CORP