Patent ID: 7467172
Filing Date: 2008-12-16
Classification: G06F,H03H,H03M

Abstract:
1. An extended digital filter apparatus comprising one or more D scale data multiresolution samplers comprised of multi-resolution uniform data samplers outputting a consolidated, concatenated stream of nonuniformly spaced samples sufficient to satisfy the Nyquist criteria for signal reconstruction; a filter bank router directing the nonuniformly spaced samples from the D scale multiresolution sampler to a digital filter bank; said digital filter bank comprising independently operating transversal FIR or IIR digital filters, each adapted to process a uniformly spaced subset of the nonuniform samples; a sampler controller receiving the nonuniform samples from said filter bank router and providing a second data stream to a phase shifter, said phase shifter adapted to modify the phase of uniformly spaced sample streams output to a stream consolidator, said stream consolidator adapted to consolidate the uniformly spaced sample streams into an interleaved digitally filtered stream; and arithmetic tables for mapping measurements or sampled values to D scale points.