Patent ID: 8213546

Claim:
A method performed by a receiver integrated circuit, the method comprising: receiving radio-frequency (RF) signals with receiver circuitry within a receiver integrated circuit, the RF signals including Radio Data System/Radio Broadcast Data System (RDS/RBDS) information; converting the RF signals to digital signals within the receiver integrated circuit; processing the digital signals with processing circuitry within the receiver integrated circuit to generate a set of RDS/RBDS candidate codewords from a set of RDS/RBDS symbols, a first one of the set of RDS/RBDS candidate codewords having a first subset of RDS/RBDS values that differs from corresponding subsets of RDS/RBDS values in all other RDS/RBDS candidate codewords in the set of RDS/RBDS candidate codewords; and determining with the processing circuitry whether the first one of the set of RDS/RBDS candidate codewords meets an acceptance criterion by comparing a first subset of reliability values determined from the set of RDS/RBDS symbols and having sign values that differ from corresponding sign values in the first subset of RDS/RBDS values with a second subset of reliability values determined from the set of RDS/RBDS symbols and mutually exclusive with the first subset of the reliability values; and wherein a first number of values in the first and the second subsets of reliability values is less than a second number of values in the first one of the set of RDS/RBDS candidate codewords.