| 摘要 |
PURPOSE:To reduce the noise generated at a correcting circuit and to increase the S/N ratio of a video signal, by amplifying a video signal including a missing part obtained from a solid-state image pickup device of a color VT camera at the front stage correcting the missing part and attenuating it at the rear stage. CONSTITUTION:The video signal including the missing part obtained from a solid-state image pickup device 11 is amplified into a prescribed level at an amplifier 31. The amplified video signal is corrected for the missing part of the video signal at a correcting circuit 12. The corrected video signal is attenuated to a prescribed level at an attenuator 32 and applied to a signal processing circuit 29 to be a video signal of the prescribed system. The noise generated at the correcting circuit 12 is reduced by amplifying the video signal at the front stage of the correcting circuit 12 and attenuating the video signal at the rear stage. Thus, the S/N ratio of the video signal corrected for the failure is improved and the picture quality is improved. |
