Patent Document ID: 4615026
Application ID: 06572442
Patent Flag: 1

Claim One:
1. A finite impulse response filter comprising: a source of digital input signal samples; a first tapped delay line having an input port coupled to said source and a plurality of output ports at which successively delayed signal samples are available; a signal scaling circuit having an input port coupled to said source and having an output port; a second tapped delay line having an input port coupled to said scaling circuit and having a plurality of output ports at which successively delayed scaled signal samples are available; a plurality of weighting circuits respectively coupled to said output ports, for producing representations of said input signal samples weighted by respective coefficient values, at least one of said weighting circuits being coupled to receive both scaled and non-scaled samples equally delayed from signal samples at said source, said at least one weighting circuit utilizing both said scaled and non-scaled samples to produce a weighted sample; and means for summing weighted samples from said plurality of weighting circuits including said at least one of said weighting circuits for producing filtered samples representative of said input signal samples.