| 摘要 |
PURPOSE:To reduce triangular noise to obtain the reproducing picture signal of a good S/N, by adding signals from the solid image pickup device after subjecting them to the processing in two-sequence circuits having half bands respectively. CONSTITUTION:In solid image pickup device 14', photoelectrons stored photodiodes arranged into a plane are read out alternately by horizontal scanning pulses of band fs/2 and phase difference 180 deg. and are separated to respective output lines, and signals are transmitted to terminals 38 and 39 successively by vertical and horizontal scanning. Signals at respective terminals are added in 41 through two-sequence fixed pattern noise eliminating circuits 15, preamplifying circuits 16, LPFs 39 having approximately half bands of video frequency band fs/2, and sampling circuits 40 and are led out as the video signal of band fs/2 through LPF33. In this case, sampling pulses of phase difference 180 deg. are used in circuits 40a and 40b. |
