Patent ID: 6845124
Filing Date: 2005-01-18
Classification: G01S,H03H

Abstract:
1. A semiconductor integrated circuit for processing a received broadcast signal of a type having a known digital code to acquire the signal, the semiconductor integrated circuit comprising: a digital sampler configured to sample the received broadcast signal to produce a serial digital bit stream at a first clock rate; a sample reducer arranged to receive the serial digital bit stream and to combine groups of N samples to produce a reduced serial digital bit stream; a serial to parallel converter arranged to convert the reduced serial digital bit stream to a parallel bit stream of words comprising M bits, and to output the M bit words at a second clock rate being higher than the first clock rate; and a correlator arrangement arranged to receive the parallel bit stream of M bit words and to correlate in parallel with a locally generated version of the known digital code by correlating one of the M bit words of the parallel bit stream with an M bit word of the locally generated version of the known digital code every cycle of the second clock, wherein an increase in throughput correlation speed is achieved.