Patent ID: 6351500
Filing Date: 2002-02-26
Classification: H03C,H03D,H04H

Abstract:
An in-band on-channel (IBOC) digital broadcast receiver for receiving redundantly transmitted source bit information, the receiver comprising:receiving means for receiving a transmitted IBOC digital signal that is at least partially redundantly transmitted, said IBOC digital signal including encoded source bit information, said receiving means for receiving said encoded source bit information that is duplicated by modulation of signals in each of upper outer and lower outer sidebands of a predetermined radio frequency (RF) mask thereby attaining at least partial codeword redundancy; demodulation means for demodulating the received IBOC digital signals in the upper outer sideband and the lower outer sideband, in order to determine duplicate demodulated source bit information for each at least partially redundantly transmitted codeword that is made up of source bit information; determination means for determining for each codeword whether the source bit information for the codeword that is at least partially redundantly transmitted in the upper outer sideband or source bit information for the codeword that is at least partially redundantly transmitted in the lower outer sideband is less likely to be erroneous; and selection means for selecting the demodulated source bit information determined by said determination means to be less likely erroneous.