Digital chrominance carrier filter for TV signals - supplied to series connection of specified band pass filter and delay member

摘要

The filter is also for the chrominace carrier side bands in a TV signal, generated by scanning an analog TV signal, pref. of NTSC standard. The latter has a chrominance carrier, on which are modulated chrominance signals, which has a phase offset between adjacent image lines. The digital TV signal in the filter is supplied to a series connection of a band pass filter and delay member (9), with the filter characteristic at a max. in the region of the chrominance carrier. The series connection output signal and the filter input signal are supplied to an adder (10). The delay is such that in both signals the chrominance carriers are mutually ADVANTAGE - Simple design without usual drawbacks. Dwg.No.1/1)