| US 7,577,457 B2 | ||
| System and apparatus for performing broadcast and localcast communications | ||
| Lawrence J. Karr, Santa Monica, Calif. (US); and William H. Mitchell, Redmond, Wash. (US) | ||
| Assigned to Microsoft Corporation, Redmond, Wash. (US) | ||
| Filed on Nov. 13, 2003, as Appl. No. 10/713,627. | ||
| Application 10/713627 is a division of application No. 10/044294, filed on Oct. 26, 2001. | ||
| Claims priority of provisional application 60/302831, filed on Jul. 03, 2001. | ||
| Prior Publication US 2004/0102215 A1, May 27, 2004 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H04M 1/00 (2006.01); H04W 4/00 (2006.01); H04B 1/40 (2006.01) | ||
| U.S. Cl. 455—550.1 [455/552.1; 455/426.1; 455/154.1; 455/77] | 18 Claims |
| 15. A mobile device, comprising:
a digital processing circuit that generates receive commands in response to received tracking information received when the
device is in a broadcast mode such that the tracking information is received on a different channel than the mobile device
transmits on, wherein the receive commands describe a receive frequency and a duration of capture time;
an antenna assembly configured to be tuned in response to the receive commands;
a transceiver that is coupled to the antenna assembly, wherein the transceiver is arranged to provide communication over the
antenna assembly in one of the broadcast mode and a localcast mode; wherein the broadcast mode operates on a wide area channel
and the localcast mode operates on a local area channel that is different from the wide area channel; and
a microcomputer assembly that is coupled to the antenna assembly, wherein the microcomputer assembly is arranged to control
operation of the transceiver in both the broadcast mode and the localcast mode.
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