Patent ID: 6493114
Filing Date: 2002-12-10
Classification: H04N

Abstract:
An improved image sensing module comprising:an image sensor comprising a plurality of photodetectors: an illumination source; a control signals circuitry providing a sensor control signal controlling a light integration process in which said image sensor images a scanning object to produce a signal thereof, said sensor control signal, applied to said photodetectors, adaptively maintaining a predefined time interval for said light integration process so that each of said photodetectors is ensured in said light integration process to produce a non-saturated electronic signal even if said illumination source is still on, wherein said sensor control signal includes a series of pulses, each of said pulses ensures that said light integration process lasts for said predefined time interval and does not start said light integration process till said predefined time interval finishes upon an arrival of a following pulse in said pulses.