Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Albert W. Chau0
John E. Mercer0
Date of Patent
February 8, 2011
0Patent Application Number
125128530
Date Filed
July 30, 2009
0Patent Citations Received
Patent Primary Examiner
Patent abstract
Discriminating between a cable locating signal and a false cable locating signal is described. A reference signal, which contains a locating signal frequency impressed on it, is transmitted in a way which provides for detection of a phase shift between the locating signal and the false locating signal. Based on the phase shift, a receiver is used to distinguish the locating signal from the false locating signal.
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