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Image sensing method and image sensor using the method

An image sensor and image sensing technology, which is applied in the direction of instruments, image communication, and color TV parts, etc., can solve problems such as large height difference, uneven distribution of background light image brightness, and error between position and center of gravity. The effect of wide, uniform brightness distribution of the background image

Inactive Publication Date: 2014-09-17
PIXART IMAGING INC
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Problems solved by technology

However, the dark image area Ob 3 , Ob 4 The location where the brightness distribution of the background light image is relatively uneven, and the height difference is large, so there may be errors in calculating its position and center of gravity

Method used

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  • Image sensing method and image sensor using the method
  • Image sensing method and image sensor using the method
  • Image sensing method and image sensor using the method

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Embodiment Construction

[0037] image 3 An image sensor 300 according to an embodiment of the present invention is shown. please note image 3 The embodiments are used for illustration only, and are not intended to limit the present invention. The image sensor 300 includes an image sensing matrix 301 , a control unit 302 , a signal reading circuit 303 , an amplifier 305 , an analog-to-digital converter 307 and an operation circuit 309 . The image sensing matrix 301 has at least one image sensing unit PIX 11 -PIX nm (In this example, the image sensing unit is a pixel, and the image sensing matrix 301 is a pixel matrix, but other types of image sensing units can also be used). These image sensing units PIX 11 -PIX nm Generate at least one image sensing signal IS according to a sensed image 11 -IS nm . The signal reading circuit 303 is used to read out the image sensing signal IS 11 -IS nm . The amplifier 305 is used for the image sensing signal IS according to at least one amplification par...

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Abstract

The invention discloses an image sensor. The image sensor comprises an image sensing matrix provide with multiple image sensing units capable of generating image sensing signals according to sensed images, an amplifier used for amplifying the image sensing signals to amplified image sensing signals according to amplification parameters, an operation circuit for calculating a part of brightness of the images sensed by the multiple image sensing units according to the amplified image sensing signals so as to obtain operation brightness signals, and a control unit for adjusting amplification parameters to enable brightness information formed by brightness corresponding to the operation brightness signals to fall within a predetermined range.

Description

technical field [0001] The invention relates to an image sensing method and an image sensor using the method, in particular to an image sensing method for adjusting the background image brightness distribution of the image sensor to make the distribution more uniform and an image sensor using the method. Background technique [0002] The image sensor can convert light into electric charge, and after processing the electric charge, output the digital signal that constitutes the image. This type of digital signal can be stored in a storage device, or output to a display device, so that the corresponding image can be based on the digital signal. There are quite a few types of electronic devices that use this technology, such as digital cameras, digital video cameras, mobile phones or mice. [0003] Image sensors can also be used in touch technology. figure 1 A prior art optical touch device 100 is shown. like figure 1 As shown, the optical touch device 100 includes an image...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/335H04N5/378G06F3/042H04N25/00
Inventor 郑信基许恩峯廖祈杰
Owner PIXART IMAGING INC
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