Cable detection apparatus and method
1 Assignment
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Accused Products
Abstract
A cable detection apparatus is disclosed having a filter, the filter transmitting components of a signal detected substantially at certain harmonics of a first frequency. The filter may also attenuate the signal at certain even harmonics thereof. A method of detecting and/or locating cables in the same manner is also disclosed.
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Citations
41 Claims
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17. A method of noise reduction in a cable detection apparatus, the method comprising:
filtering a cable detection input signal to increase the relative strength of signal components at a plurality of harmonics of a first frequency to at least one non-harmonic frequency between two of said harmonics of the first frequency. - View Dependent Claims (18, 19, 20, 21, 22)
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38. A processing system for noise reduction in a cable detection apparatus, the processing system comprising:
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a program memory storing instructions for controlling a processor; and
a processor for reading and implementing the instructions stored in the program memory;
wherein the program instructions stored in the program memory comprise instructions for controlling the processor to filter a cable detection input signal to increase the relative strength of signal components at a plurality of harmonics of a first frequency to at least one non-harmonic frequency between two of said of harmonics.
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40. A carrier medium carrying processor readable code for controlling a processor to filter a cable detection input signal to increase the relative strength of signal components at a plurality of harmonics of a first frequency to at least one non-harmonic frequency thereof between two of said harmonics.
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Specification