Patent ID: 8427711

Claim:
A scanning controller for a scanner which comprises at least one image sensor, an analog front end unit used for performing a signal conversion from an analog image signal sensed by the at least one image sensor to a digital image signal, at least one motor and an image buffer, and the scanning controller comprising: an image data processing unit used to process the digital image signal from the analog front end unit and accordingly generate an image data to be stored within the image buffer in an image data generating rate; a motor controlling unit used to generate a motor driving timing for driving the at least one motor; and a relation control unit used to control the motor controlling unit either accelerating the motor driving timing to increase the image data generating rate or decelerating the motor driving timing to decrease the image data generating rate, without immediate controls of stopping the at least one image sensor sensing and the at least one motor driving, by at least one timing variance predetermined in corresponding to a manner when an available capacity of the image buffer approaches at least one storage condition.