Compensation for a scanning system

摘要: A sensitivity profile of photodiodes forming a self-scanned photodiode array operating in the charge storage mode is obtained as scans standard background or white level while non-operational write mode. The serial output integrated and predetermined grey subtracted to limit resultant signal range affected by variations illumination non-uniformities. digitized stored under control signal. Compensation then takes place an operational digital signals are converted analog added thereto. This applied compensation differential amplifier divider circuit. uncorrected video information from integrator also whose circuit where removed provide corrected