G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 13/91 (2006.01) G01S 13/78 (2006.01) G06K 7/00 (2006.01) G07B 15/00 (2006.01) G08G 1/017 (2006.01)
Patent
CA 2115476
ABSTRACT A method of identifying an object and determining in which of at least two areas the object is located is disclosed. The method includes the steps of: focusing a first directional antenna (18) on a first area (28a), focusing a second directional antenna on a second area (28b), transmitting a first field strength pulse (44) from said first directional antenna (18), transmitting a second field strength pulse (46) from said second directional antenna (18), and comparing in a transponder (14) the first field strength pulse (44) to the second field strength pulse (46) to determine in which of the two areas (28a,28b) the transponder (14) is located. Other devices, systems and methods are also disclosed.
Kirby Eades Gale Baker
Texas Instruments Incorporated
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