G - Physics – 01 – S
Patent
G - Physics
01
S
343/19
G01S 13/75 (2006.01) A01K 11/00 (2006.01) B61L 25/04 (2006.01) G06K 7/00 (2006.01) G06K 19/067 (2006.01) G06Q 10/00 (2006.01) G07C 9/00 (2006.01)
Patent
CA 1204485
19 REMOTE PASSIVE IDENTIFICATION SYSTEM ABSTRACT OF THE DISCLOSURE A system for passively identifying remote objects such as livestock is disclosed. A power transmitter transmits a plurality of radio frequency burst signals at a given frequency, and a uniquely coded transponder associated with the object to be identified produces a plurality of coded identification signals in response to the burst signals from the transmitter. The coded identification signals are read by a receiver to identify the object. The transmitter and receiver are time division multiplexed for alternate operation. Accordingly, when an object is to be identified, the transmitter is switched on to transmit the burst signals, thereby activating the transponder to produce the coded identification signals. The transmitter is then switched off and the receiver switched on to receive the identification signals for identifying the object. The on/off operation takes place at a speed of 20,000 times per second.
434129
Scott Norman R.
Sigrimis Nick A.
Cornell Research Foundation Inc.
G. Ronald Bell & Associates
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