Patent ID: 7228100

Claim:
A method of providing program data in association with a main audio program to a receiver of a duplicative radio broadcasting system wherein a duplicative broadcast includes a primary channel and a backup channel in a predetermined frequency allocation, wherein both said primary channel and said backup channel transmit said main audio program to said receiver, wherein said primary channel transmits program data not included in said backup channel, and wherein said receiver includes an audio output for reproducing said main audio program and a display for displaying said program data, said method comprising the steps of: recurrently compiling a program event list of said program data corresponding to a current program event and a plurality of upcoming program events of said main audio program; recurrently transmitting said event list within said primary channel; recurrently recovering said program event list in said receiver and storing said program data in a memory; displaying said program data of said current program event of said main audio program; blending said audio output from said primary channel to said backup channel in response to detection of an impaired primary channel; and updating said display to show program data of one of said upcoming program events of said main audio program from said memory during impairment of said program data in said primary channel.