| 摘要 |
A channel mapping system has a data source containing data indicative of the geographic range of channels broadcast in at least one selected region and a channel determination module that uses data indicative of a location in conjunction with the data source to determine a preferred channel. The preferred channel may be an FM channel. A transmitter is used with a portable media player to broadcast audio data contained on or received by the portable media player over the preferred channel. The media can be received by a corresponding receiver set to the same preferred channel. Adjustments to the channel settings can be determined repeatedly so that, as a preferred channel changes with location, an automated process or a user facilitated process can be used to change the channel settings on each of the transmitter and the receive. A location identification system such as GPS can be used to identify the location.
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