Intel Corporation

Landis+gyr, Inc.

William Jenrette

Bruce Everett Randall

A method, apparatus, and system for detecting a signal of interest. According to some embodiments, a power of a frequency component of a signal is determined. The power is accumulated for a first period and a second period, the second period being shorter than the first period. Power spectrum information may be found, and high and normalized power spectrum information may be determined and compared.

Signal detection

A method, apparatus, and system for detecting a signal of interest. According to some embodiments, a power of a frequency component of a signal is determined. The power is accumulated for the long and short term, and a delta integrated power spectrum (e.g., a difference between the accumulated power for the long-term and the accumulated power for the short-term) is found. A high delta integrated power spectrum and a normalized delta integrated power spectrum may also be found. It may then be determined whether the high delta integrated power spectrum represents a signal of interest by comparing the power of the high delta integrated power spectrum to the power of the normalized delta integrated power spectrum.

An apparatus for generating precision time signals includes a source of power line timing information, a source of precision time signals, and a timing circuit. The timing circuit is coupled to the source of precision time signals to receive a precision time signal there from, and is operable to generate clock information based on the precision time signal. The timing circuit is further operable to generate clock information based on the power line timing information.

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Raleigh, NC, United States of America

William Jenrette