| 摘要 |
PURPOSE:To eliminate the need of an operation matrix circuit, by inverting the phase of a color burst signal, in obtaining an NTSC signal from a signal obtained through the use of a complamentary color filter as a color separation filter. CONSTITUTION:CY,MG,Ye signals from complementary color filters for magenta MG, cyane CY and yellow Ye pass respectively through a preamplifier 1 and a process circuit 2 and are given to a matrix circuit 3 to obtain outputs 31-33. The output 31 is inputted to a Y process circuit 4 and the output 32 is inputted to an R-Y balance modulation circuit 5. In inputting the output 32 to a B-Y balance modulation circuit 6, a burst pickup pulse 71 of a color burst signal fromed at a synchronizing signal generator 7 is added as a signal 71' after phase inversion at a phase inverting circuit 8. The output signals of the circuits 4-6 and a synchronizing signal 72 are summed to obtain an NTSC signal at an output terminal 9. |
