E - Fixed Constructions – 05 – F
Patent
E - Fixed Constructions
05
F
E05F 15/20 (2006.01) E01F 13/10 (2006.01) G07C 9/00 (2006.01) G08C 17/02 (2006.01) G08C 21/00 (2006.01)
Patent
CA 2471975
Disclosed is a system and method for proximity control of a barrier comprising a stationary wireless signal receiving device and a mobile transmitting device. The wireless signal receiving device may monitor at least one transmitting device within a predetermined coverage area and may be a radio frequency receiver or a spread spectrum receiver located near the barrier. In one embodiment, the transmitter device emits a control signal that is received by the receiving device when the transmitter is within a reception range. In one embodiment, the control signal includes transmitter identification information, directional information and position information.
Tsui Gallen Ka Leung
Tsui Philip Y. W.
Riches Mckenzie & Herbert Llp
Tsui Gallen Ka Leung
Tsui Philip Y. W.
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