Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Gallen Ka Leung Tsui0
Philip Y. W. Tsui0
Date of Patent
August 8, 2006
0Patent Application Number
108753430
Date Filed
June 23, 2004
0Patent Citations Received
0
Patent Primary Examiner
Patent abstract
A system and method for proximity control of a barrier comprise 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.
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