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Backlight brightness control system

A technology of backlight brightness and control system, applied in energy-saving control technology, light source, electric light source, etc., can solve problems such as certification

Active Publication Date: 2016-08-03
苏州市天启新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the all-in-one computer is used as a simple display, because the backlight brightness control of the all-in-one computer display is controlled by the display chip, it cannot pass WHQL (Microsoft Windows Hardware Quality Lab, Windows Hardware Equipment Quality Laboratory) certification under the Windows8 operating system

Method used

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  • Backlight brightness control system

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Experimental program
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Embodiment Construction

[0011] see figure 1 , in a preferred embodiment of the present invention, a backlight brightness control system includes a control unit 100 , a first adjustment unit 200 and a second adjustment unit 300 . The first adjustment unit 200 and the second adjustment unit 300 are used to control the brightness of the backlight of an electronic device 400 . Wherein, the electronic device 400 is an all-in-one computer.

[0012] see figure 2 , the control unit 100 includes a first switch Q1 and a second switch Q2. The first switch Q1 and the second switch Q2 respectively include a first terminal, a second terminal and a third terminal. The first end of the first switch Q1 receives a first control signal from a display chip (not shown). The second end of the first switch Q1 is grounded. The third end of the first switch Q1 receives a first DC voltage Vcc through a first resistor R1. The third terminal of the first switch Q1 outputs a first switch signal. The third end of the firs...

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PUM

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Abstract

The invention discloses a backlight brightness control system for controlling the backlight brightness of an electronic device. The backlight brightness control system comprises a control unit, a first adjusting unit and a second adjusting unit. When the electronic device is in a power-on state, the control unit outputs a first switch signal for a first potential and a second switch signal for a second potential, the electronic device receives a first adjusting signal from a central processor via the first adjusting unit, and the backlight brightness is adjusted according to the first adjusting signal. When the electronic device is in a power-off state, the control unit outputs a first switch signal of a second potential and a second switch signal of a first potential, the electronic device receives a second adjusting signal from a display chip via the second adjusting unit, and the backlight brightness is adjusted according to the second adjusting signal.

Description

technical field [0001] The invention relates to a backlight brightness control system. Background technique [0002] There are two ways to control the brightness of the backlight of the all-in-one computer display: one is to control it through the central processing unit on the motherboard of the all-in-one computer; the other is to control it through a display chip built into the all-in-one computer display. When the all-in-one computer is used as a simple display, the all-in-one computer can be connected to a desktop computer host. Under the current Windows8 operating system, the brightness control of the backlight of the all-in-one computer display must be controlled by the central processing unit on the motherboard of the all-in-one computer. When the all-in-one computer is used as a simple display, because the backlight brightness control of the all-in-one computer display is controlled by the display chip, it cannot pass WHQL (Microsoft Windows Hardware Quality Lab, W...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
CPCH05B47/11Y02B20/40
Inventor 阙正胜陈俊生
Owner 苏州市天启新材料科技有限公司
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