Light source control device and method for projection system

A technology of light source control and projection system, which is applied in the parts, projection devices, optics, etc. of TV systems, can solve the problems of wasting time and electricity, and achieve the goal of improving reliability, prolonging life, and shortening the time required for restart. Effect

Inactive Publication Date: 2005-09-14
LEIJIN ELECTRONIC SHENYANG CO LTD
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  • Summary
  • Abstract
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Problems solved by technology

[0019] There is a problem like this: when the user wants to watch TV, no matter what the previous state is, no matter whether the shutdown is normal or abnormal, the light source will be turned on after the fan is turned on according to the set time length, which causes a problem. Unnecessary waste of time and waste of electric energy, this is where the disadvantages of traditional methods

Method used

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  • Light source control device and method for projection system
  • Light source control device and method for projection system
  • Light source control device and method for projection system

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Embodiment Construction

[0045] The light source control device and method for a projection system based on the present invention will be described in more detail below with reference to the accompanying drawings.

[0046] The light source control device based on the projection system of the present invention, such as image 3 As shown, it consists of the following parts:

[0047] The fan 600; the fan driving unit 500 that controls the operation of the fan 600; the light source 800; the light source driving unit 700 that controls and drives the light source 800; the power input unit 100 that inputs the power required for driving the entire system; The voltage measurement unit 200 of the charge / discharge voltage value; the A / D converter 300 that converts the voltage value measured by the above voltage measurement unit 200 into a digital signal; the fan 600 is changed according to the digital value converted by the above A / D converter 300 The length of running time, the control signal sent to the fan d...

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PUM

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Abstract

The invention relates to a projection system light source control apparatus and method, wherein, the apparatus comprises an main input unit of main power source needed by inputting drive system, a voltage measuring unit, an A / D converter converting voltage measured by voltage measuring unit to digital signal, a microcomputer which changes fan run-on time according to digital signal from A / D converter and controls light source on-off.If last closedown is innormal, the appatatus is able to identify its process and sets different fan run-on time when restarting.

Description

technical field [0001] The invention relates to a projection system, in particular to a light source control device and method for the projection system. The light source control device and method provided by the present invention can recognize the previous system state and shorten the start-up time when the system restarts. Background technique [0002] In recent years, we have ushered in the age of Home Theater. It turns out that projection TVs or other projection devices over 40 inches that can only be seen in companies or public buildings have spread rapidly and entered families. Now, the average household is using a large projection device to watch TV broadcasts. [0003] Projection equipment and projection TVs used in this area, in order to pursue high brightness and vividness, a large number of liquid crystal displays are used. The development and production of such products for families is increasing rapidly, which is a major trend. The determining factor of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/18G03B21/20H04N5/74
Inventor 朴圭东
Owner LEIJIN ELECTRONIC SHENYANG CO LTD
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