Environment optical detection system and method

A technology of ambient light detection and light detection, which is applied in the field of ambient light detection systems, can solve problems such as increasing production costs and increasing system complexity, and achieve the effect of reducing noise tolerance

Inactive Publication Date: 2008-07-16
AU OPTRONICS CORP
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  • Abstract
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Problems solved by technology

However, this kind of photodetection system using multiple optional photodetection-related components to generate readout voltages corresponding to different ambient light levels will significantly increase system complexity and increase production costs

Method used

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  • Environment optical detection system and method
  • Environment optical detection system and method

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Embodiment Construction

[0071] In order to make the present invention more clear and understandable, hereinafter, the ambient light detection system and related method of the present invention will be described in detail with specific embodiments in conjunction with the accompanying drawings, but the provided embodiments are not intended to limit the scope of the present invention. , and the numbering of the method process steps is not used to limit the sequence of execution. Any recombined execution process of the method steps, resulting in a method with equal functions and effects, is within the scope of the present invention.

[0072] Please refer to FIG. 3 , which is a functional block diagram of an ambient light detection system 300 according to an embodiment of the present invention. The ambient light detection system 300 mainly includes a light detection circuit 310 , an integration circuit 320 , an integration period control circuit 330 , a comparison circuit 350 and a signal processing circui...

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Abstract

The invention provides an environment light inspecting system and a method; the system mainly comprises a light inspecting circuit used for executing a light inspection program to generate light inspection signals, an integral period control circuit used for generating control signals according to the light inspection signals, and an integral circuit used for regulating integral period according to the control signals and executing integral program for the light inspection signals in the regulated integral period so as to read signals. The invention also provides an environment light inspection method, mainly including the steps of providing a plurality of integral periods, executing the light inspection program to generate the light inspection signals, selecting integral periods from the plurality of integral periods according to the light inspection signals and executing integral programs for the light inspection signals in the selected integral period. The invention can avoid the problems that environment illumination cannot be distinguished, for the read signals with saturation voltages are generated and the noise tolerance is reduced as the read signals have a low voltage. The invention is suitable for inspecting environment illumination in a wide range.

Description

technical field [0001] The present invention relates to an ambient light detection system and method, and in particular to an ambient light detection system and method with an adjustable integration period. Background technique [0002] Today's various consumer electronic products, whether it is computer monitors, LCD TVs, plasma TVs or mobile phones, personal digital assistants (PDAs), digital cameras and handheld game consoles display screens, as well as automatic teller machines (ATMs). Touch screens are widely used in flat-panel display technology. Therefore, consumers' requirements for the color and brightness acuity of flat-panel display images are greatly increased. Based on the above requirements, most of today's displays are equipped with a light detection system that can sense external light, so that the flat panel display can appropriately change the brightness and color of the picture when the external ambient light changes, so that consumers can A better visua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J1/10G02F1/13
Inventor 陈纪文赖明升江明峰刘柏源
Owner AU OPTRONICS CORP
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