DIGITAL RADIO RECEIVER SYSTEM AND METHOD

摘要

Provided is a method of scanning for broadcast services in a broadcast signal to generate a broadcast service list for use with a digital radio receiver system, and the digital radio receiver system used for scanning for broadcast services to generate a broadcast service list. The system utilises spectrum awareness data, which includes data defining one or more frequencies at which broadcast services may be receivable, in order to reduce the number of frequencies to scan such that the overall scan time may be reduced. The data in the spectrum awareness data is a filtered subset of the plurality of frequencies at which the broadcast services may be received, which allows the controller of a digital radio receiver to tune a tuner to only the frequencies that are likely to contain a broadcast service when generating or updating a broadcast service list.

主权项

1. A method of scanning for broadcast services in a broadcast signal to generate a broadcast service list for use with a digital radio receiver system, the broadcast signal comprising a plurality of frames, each frame comprising a plurality of time-interleaved channels, each channel comprising broadcast data associated with one or more broadcast services, the broadcast service list comprising data defining available broadcast services for a digital radio receiver at one or more frequencies, the method comprising the steps of:
controlling a tuner of a receiver to tune to a first frequency; receiving a first broadcast signal at the first frequency; demodulating the first received broadcast signal; decoding a broadcast data corresponding with a service information channel in a first frame of the first received broadcast signal, the service information channel comprising broadcast service data defining available broadcast services for one or more frequencies; and generating a broadcast service list using the broadcast service data received at the first frequency, wherein the controller selects the first frequency from a plurality of frequencies at which a broadcast signal is receivable based on spectrum awareness data, the spectrum awareness data defining one or more frequencies at which a broadcast signal is receivable by the receiver, and wherein the one or more frequencies of the spectrum awareness data are a filtered subset of the plurality of frequencies.