Switch circuit of an image sensor for changing resolution and a method thereof

摘要

A resolution switch circuit for an image sensor uses a control unit to control a plurality of image gathering units to generate and store image signals. A resolution control unit controls a plurality of shift registers through the resolution control signals so that the shift registers control the image gathering units to output image signals. The signal combining unit is used to combine the image signals output from the image gathering units to achieve resolution change. Since the resolution switch circuit for the image sensor according to invention does not require additional resolution switch wiring, the affect of noise can be avoided and cost of the circuits can be reduced. The transmission of the image signals in the form of charges prevents any signal distortion due to resistance of wiring during transmission.