| US 7,511,620 B2 | ||
| Methods and apparatus for antenna failover in an RFID system with multi-antenna zones | ||
| Ajay Malik, Santa Clara, Calif. (US) | ||
| Assigned to Symbol Technologies, Inc., Holtsville, N.Y. (US) | ||
| Filed on Mar. 31, 2006, as Appl. No. 11/394,604. | ||
| Prior Publication US 2007/0229275 A1, Oct. 04, 2007 | ||
| Int. Cl. G08B 13/14 (2006.01) | ||
| U.S. Cl. 340—572.7 [340/572.1; 340/10.1] | 10 Claims |
| 7. A method of processing radio-frequency identification (RFID) tag information comprising:
providing a first RFID antenna having a first read point, and a second RFID antenna having a second read point;
providing a failover RFID antenna having a third read point intersecting the first read point;
providing a controller communicatively coupled to the first, second, and failover RFID antennas;
configuring the controller to assign the first RFID antenna, the second RFID antenna, and the failover RFID antenna to a read
point zone;
receiving a failure notification indicative of failure of the first RFID antenna;
activating the failover RFID antenna in accordance with a set of failover conditions;
receiving, from the failover RFID antenna, a first signal from an RFID tag;
receiving from the second RFID antenna, a second signal from the RFID tag;
aggregating, via the controller, the first and second signals and attributing the first and second signals to the read point
zone.
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