US Patent 7502589 Supplemental broadcast data processing

Scan a plurality of broadcast signals, select and receive one of the scanned broadcast signals and determine parameters about the received broadcast signal. Assign a priority to the received broadcast signal based on the parameters, and store the parameters and priority in memory. Redetermine the parameters in priority order in a manner that reduces the time for redetermining. Reassign a priority to the received broadcast signal based on the redetermined parameters, and update in memory the redetermined parameters and priority.