Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Martin S. Wilcox0
Date of Patent
October 5, 2010
0Patent Application Number
125777960
Date Filed
October 13, 2009
0Patent Primary Examiner
Patent abstract
A device measures distance using a wireless signal that has two simultaneously transmitted components. Each of the two components includes a respective repeated code, the two codes having different durations. On receipt of the signal, the propagation distance is calculated separately for each code and compared. The calculated distance is considered to be valid only if the two calculations yield the same result. The durations of the two codes may be proportional to numbers having a relative prime relationship. The signal is generated and transmitted by the same device that performs the distance calculation, with the signal being retransmitted back to the device by a remote device, or may be generated and transmitted by the remote device.
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