CMOS IMAGE SENSOR, TIMING CONTROL METHOD AND EXPOSURE METHOD THEREOF

摘要

The prevent invention discloses a CMOS image sensor, the timing control method and exposure method thereof. The CMOS image sensor includes a pixel array composed of a plurality of pixel lines and a control chip for controlling the pixel array. The control chip controls the pixel lines to expose in the exposure time during one exposure period of each pixel line, and then wait predetermined time after exposure time to output data. In the prevent invention, the exposure time of the CMOS image sensor is separated from the time of outputting data. Therefore, the working mode of the CMOS image sensor can be controlled more flexibly. Furthermore, by adopting the exposure method of controlling the pixel lines in the sub-array of the CMOS image sensor to expose synchronously provided by the present invention, the flash time of the light source is the same as the exposure time of each single sub-array, thereby improving the utilization efficiency of the light source power and ensuring real-time image sampling.