Patent ID: 7038215

Claim:
An image data processing system, comprising: a photoelectric conversion device comprising a substrate provided with a plurality of photoelectric conversion elements, and a light source for emitting light having no image data to the plurality of the photoelectric conversion elements, a radiation source; a control means for independently controlling the radiation source, the light source and the photoelectric conversion device, wherein the image data processing system has a non-reading-out period having a first photoelectric conversion period for generating electric charges in the photoelectric conversion elements by the emitted light having no image data after a bias potential is applied to the photoelectric conversion elements, and a first read-out period for reading out the electric charges generated by the light having no image data from the photoelectric conversion elements, and a reading-out period having a second photoelectric conversion period for generating electric charges in the photoelectric conversion elements by light corresponding to radiation incident thereon, and a second read-out period for reading out the electric charges from the photoelectric conversion elements; and wherein the control means drives the light source during the first photoelectric conversion period and drives the radiation source during the second photoelectric conversion period.