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Backlight Brightness Control System

A backlight brightness and control system technology, applied in energy-saving control technology, light source, electric light source, etc.

Active Publication Date: 2019-01-22
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) under the Windows 8 operating system. certified

Method used

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  • Backlight Brightness Control System
  • Backlight Brightness Control System

Examples

Experimental program
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Effect test

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

A backlight brightness control system, used to control the backlight brightness of an electronic device, the backlight brightness control system includes a control unit, a first adjustment unit and a second adjustment unit, when the electronic device is in the power-on state When down, the control unit outputs a first switch signal of a first potential and a second switch signal of a second potential, and the electronic device receives a first adjustment signal from a central processing unit via the first adjustment unit , and adjust the brightness of its backlight according to the first adjustment signal; when the electronic device is in the shutdown 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 adjustment signal from the display chip via the second adjustment unit, and adjusts the brightness of its backlight according to the second adjustment 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 Windows 8 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) ...

Claims

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Application Information

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Patent Type & Authority Patents(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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