FIELD: physics.
SUBSTANCE: invention can be used in television cameras working on photosensitive matrix charge coupled devices (PMCCD) designed for operation in optical overload conditions and having electronic sensitivity adjustment by varying intra-frame accumulation time. According to the disclosed method of generating an image signal, frame (half-frame) transfer of signal charges in the PMCCD from the accumulation section to the memory section takes place at the final retrace interval of frame scanning to achieve the corresponding time delay of the duration of accumulation of signal charges, and in the retrace interval of frame scanning preceding transfer of signal charges, parasitic charges are cleared from the memory section in accordance with two embodiments, specifically: embodiment 1 - due to displacement with frame (half-frame) transfer frequency in the output register or in embodiment 2 - due to tapping parasitic charges into the photodetector substrate by engineering an anti-blooming region and an electronic shutter in the memory section.
EFFECT: wider dynamic range of PMCCD through elimination of parasitic charges in the memory section under optical overloading conditions of the photodetector independent of its conduction channel.
6 dwg
