Time division multiple digital audio and video signal recording and reproducing system

摘要

PURPOSE:To prevent the deterioration of quality in a reproducing analog video signal due to the difference of number of scanning lines, by dividing an analog video signal relating to color still picture information into a luminance signal and two color difference signals, and subjecting to digital pulse modulation and recording them on a disc recording medium in time series. CONSTITUTION:An analog audio signal of 3-channel is applied to an AD converter 4, where it is converted into a digital audio signal and applied to a signal processing circuit 6. On the other hand, a still picture is picked up at a color television camera 10 with 625 of scanning lines, R, G, B signals are picked up and they are converted into a luminance signal Y, and color difference signals R-Y and B-Y are obtained at a matrix circuit 11, and AD conversion is performed into digital signals and read out in time series from a memory 15. A signal processing circuit 6 rearranges the input digital signals of 4-channel in total into a serial data, each digital signal is sectioned at each specified section and time division multiplexing can be performed by interleaving the digital signals.