| 摘要 |
PURPOSE:To obtain a video signal processing circuit for video camera where mosaic-formed step is corrected from a screen by sampling alternately an interpolation signal and an original signal to two adjacent picture element outputs formed with a delay means. CONSTITUTION:The signal delaying an output signal of a two-dimensional sensor 11 by means of a delay line 14 for one driving clock period tCK and the original signal are added at an adder 16 and halved by an amplifier 17, then the interpolation signal is obtained. Since the phase of the interpolation is coincident with that of the original signal, the step difference between a video output signal where the step difference between horizontal picture elements is decreased is obtained by delaying the orginal signal by tDK/2 at a delay line 15, sampling and holding alternately by the sampling pulse frequency at a sample holding circuit 12 and filtering the signal by an LPF 13. |
