FIELD: television technology.
SUBSTANCE: invention relates to television technology and is oriented to use in television cameras, made on the basis of matrix television sensors based on the technology of charge-coupled devices (CCDs), in which electronic sensitivity control is provided due to changes in the intraframe accumulation time. Result is achieved by the fact that the magnitude of AAAT (automatic adjustment of accumulation time) control voltage and, accordingly, the duration of accumulation of information charges per frame are determined separately for each individual target by the peak value of the video signal generated at the output of the photodetector during the corresponding time interval within the forward course of the frame.
EFFECT: technical result is the automatic organization of increasing sensitivity for low-illumination fragments of a television frame by increasing the accumulation time for them.
1 cl, 7 dwg
