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Automatic detection method and portable electronic device using same

An automatic detection and electronic device technology, applied to instruments, static indicators, etc., can solve problems such as poor display effect and miscontrol, and achieve the effect of improving accuracy

Active Publication Date: 2013-09-18
PIXART IMAGING INC
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Problems solved by technology

However, in some cases, when the ambient light sensor 91 is covered by an object, the detected ambient light will also become weaker, but if the brightness of the backlight is correspondingly reduced at this time, the display effect will be deteriorated.
[0004] In view of this, the present invention proposes an automatic detection method and a portable electronic device using the method, which can avoid the situation of miscontrol in the above-mentioned known technology

Method used

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  • Automatic detection method and portable electronic device using same
  • Automatic detection method and portable electronic device using same
  • Automatic detection method and portable electronic device using same

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Embodiment Construction

[0026] In order to make the above and other objects, features and advantages of the present invention more apparent, the following will be described in detail with accompanying drawings. In the description of the present invention, the same components are denoted by the same symbols, and will be described first.

[0027] refer to figure 2 As shown, it shows a schematic diagram of a portable electronic device 10 according to an embodiment of the present invention, and the portable electronic device 10 uses a liquid crystal panel as the display unit 11; the portable electronic device 10 can be a notebook computer, a mobile phone, an MP3 player, for example and personal digital assistants (PDAs), etc., but the present invention is not limited thereto. Generally, a liquid crystal panel includes a backlight module. In this embodiment, the backlight brightness of the backlight module can be adjusted according to the detection result of the detection module 2. For example, when the...

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Abstract

The invention relates to a portable electronic device which comprises a backlight module, an ambient light sensor, a proximity sensor and a processing unit, wherein the backlight module can give out light by backlight brightness; the ambient light sensor is used for detecting the ambient light intensity; the proximity sensor is used for detecting an article; the processing unit is used for starting the proximity sensor when the ambient light intensity detected by the ambient light sensor is reduced and exceeds the preset value or preset amplitude, and maintaining or reducing the backlight brightness according to the detection result of the proximity sensor. The invention also provides an automatic detection method.

Description

technical field [0001] The invention relates to a sensing device and a sensing method, in particular to an automatic detection method and a portable electronic device using the method. Background technique [0002] Portable electronic devices have gradually become an indispensable product in daily life due to their convenience. However, the batteries used in portable electronic devices generally have limited capacity. In order to prolong the power supply time of the batteries, how to reduce the power consumption of the devices has become an important research topic. [0003] For example, in an electronic device including a liquid crystal display panel, adjusting the brightness of the backlight of the liquid crystal display panel in real time is an effective energy saving method. refer to figure 1 As shown, the aforementioned electronic device usually includes an ambient light sensor 91 for detecting changes in ambient light. The light-transmitting window 93 enables ambien...

Claims

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Application Information

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IPC IPC(8): G09G3/00G09G3/34
Inventor 许恩峰谢孟寰
Owner PIXART IMAGING INC
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