Yesterday, September 25, 2007, XM was granted a patent for a Method and Apparatus for Determining Location in a Satellite Communication System. The application was one that initially struck fear in the heart of the NAB. The NAB feared that the technology could be used to implement local advertising in satellite radio receivers. This patent describes the method of using two satellites and terrestrial repeaters for determine approximate location within the coverage area. The patent has many applications and is consistent with some XM's other applications for regional information provided to dealerships. The grant of the patent should ruffle a few feathers once again.
This patent is among a string of patents that have been granted to XM recently. This was the fourth patent granted over the last 3 months. Others include:
METHOD AND APPARATUS FOR CONTINUOUS CROSS-CHANNEL INTERLEAVING
METHOD AND APPARATUS FOR NAVIGATING, PREVIEWING AND SELECTING BROADBAND CHANNELS VIA A RECEIVING USER INTERFACE
METHOD AND APPARATUS FOR TIMING RECOVERY IN AN OFDM SYSTEM
Sirius was also granted an interesting patent at the end of July:
SYSTEM AND METHOD FOR CREATING AND RECEIVING PERSONALIZED BROADCASTS
One has to wonder whether a service such as Slacker would run afoul of this patent.
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