Image processing circuit and method
An image processing and circuit technology, applied in cathode ray tube indicators, instruments, static indicators, etc., can solve problems such as clear, inability to see the screen image, power consumption and unable to display the image, and achieve the effect of improving quality
Active Publication Date: 2015-07-29
ACER INC
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Therefore, the user may only see the surrounding environment reflected by the screen, but cannot see the picture displayed on the screen clearly
Especially when the content of the picture to be displayed on the screen is dark, the problem that the user cannot clearly see the picture will be more serious
At present, the backlight brightness of the screen is increased to reduce the reflected light of the screen, but the above method consumes a lot of power and cannot make the picture clear
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[0033] figure 1 A schematic diagram showing an image processing circuit according to an embodiment of the present invention. The image processing circuit 100 is applicable to electronic devices such as smart phones (Smart phones), personal digital assistants (Personal Digital Assistant, PDA for short), mobile phones, and tablet computers (Table PC). The image processing circuit 100 includes a light sensor 102 , an image control unit 104 , an image analysis unit 105 , a gamma curve lookup table 106 , a backlight control unit 108 and an image processing unit 110 .
[0034] The light sensor 102 is used to sense the intensity of ambient light sources around the electronic device and output an intensity signal IN correspondingly, such as a photo diode (Photo Diode), a photoelectric crystal or other electronic components with a light sensing function. When the user uses the electronic device outdoors, the ambient light source sensed by the light sensor 102 is relatively strong, tha...
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The invention relates to an image processing circuit and method. The image processing circuit comprises a light sensor, an image control unit, a gamma curve look-up table, a backlight control unit and an image processing unit, wherein the light sensor senses the ambient light intensity and outputs an intensity signal; the image control unit receives an image signal, and determines an image brightness value corresponding to first image data of the image signal according to the intensity signal; the gamma curve look-up table outputs a brightness value signal corresponding the image brightness value; the backlight control unit outputs a backlight brightness signal corresponding the image brightness value; and the image processing unit outputs corresponding first and second image data according to the brightness value signal and the backlight brightness signal.
Description
technical field [0001] The present invention relates to a display technology, and in particular to an image processing circuit and its method. Background technique [0002] In order for the current electronic products to allow users to watch the images displayed on the screen under different ambient light sources, most electronic products are often equipped with a light sensor (Light Sensor) to sense changes in the ambient light sources around the electronic product. And adjust the backlight brightness of the screen. However, when the user's ambient light source is too strong (such as using electronic products outdoors), the specular reflection of the screen of the electronic product is stronger than the brightness of the image presented by the screen itself. Therefore, the user may only see the surrounding environment reflected by the screen, but cannot clearly see the picture displayed on the screen. Especially when the content of the picture to be displayed on the scree...
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IPC IPC(8): G09G5/10
Inventor 黄湘婷
Owner ACER INC