DEVICE FOR NORMALIZATION OF READ IMAGE SIGNAL Russian patent published in 1997 - IPC

FIELD: image scanning devices. SUBSTANCE: proposed device includes clock pulse generator 1, former 3 of controlling pulses, line photosensitive charge-coupled device 4, comparators 8, 9 and reversible counter 11. Maximum sensitivity of line photosensitive charge- coupled device 4 is provided with change of illumination of object (source 5 of optical signal) and kept within specified bounds thanks to insertion of controlled frequency divider 3, analog-to-digital converter 6, shift register 7 and comparator 10. EFFECT: increased accuracy in reading of images. 3 dwg