Smear reduction in solid state television camera

Claim 1

A solid state television camera having a solid state image sensing device which reduces extraneous charges including a plurality of individual light sensing units arranged in both horizontal and vertical rows and for sequentially generating a signal corresponding to an image by transferring a charge generated by said light sensing units and said device does not contain any horizontal rows of shielded photodetection regions, said solid state television camera comprising: (A) a synchronizing signal generator for generating horizontal and vertical synchronizing signals; (B) a clock pulse generator for generating clock pulses corresponding to said horizontal synchronizing signal and controlling the sequential transfer of the charge representing one horizontal line of the image, the number of said clock pulses being equal to the sum of the number of said horizontal rows and a predetermined number "n"; (C) detecting means for detecting the output signal of the image sensing device during a period equal to the number of said clock pulses, and said period occurring after the signal corresponding to said image is obtained and during a part of a vertical blanking period; (D) a compensating signal generator supplied with the output of said detecting means for generating a compensating signal; and (E) a compensating circuit for reducing the undesirable signal caused by said extraneous charges which mix with the charge representing the image during the transfer of the latter charge by using said compensating signal.