Patent ID: 6266380
Filing Date: 2001-07-24
Classification: H04L,H04N

Abstract:
In a system for processing a received Vestigial Sideband (VSB) modulated datastream containing high definition video data represented by a constellation of symbols including a DC component, said data having a data frame format constituted by a succession of data frames comprising a field sync component prefacing a plurality of data segments having an associated segment sync component, apparatus comprising:an input network responsive to said received signal for producing a demodulated symbol datastream which is oversampled at a rate which is a multiple of the symbol rate of said received datastream;a decoder network for providing a decoded datastream to an output channel;a compensation network, coupled to said input network and to said decoder network, operative at said oversampling rate for attenuating said DC component from said demodulated symbol datastream, whereinsaid decoder network is responsive to the DC attenuated demodulated output from said compensation network.