Method, computer program, and system for automated real-time signal analysis for detection, quantification, and prediction of signal changes
First Claim
1. A method of detecting a change in at least one feature of an input signal, the method comprising the steps of:
- (a) receiving the input signal;
(b) determining at least one time-weighted cumulative distribution function of the input signal;
(c) comparing the time-weighted cumulative distribution function to a reference function in order to detect the change in the feature of the input signal; and
(d) communicating detection of the change in the feature.
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Abstract
A method, computer program, and system for real-time signal analysis providing characterization of temporally-evolving densities and distributions of signal features of arbitrary-type signals in a moving time window by tracking output of order statistic filters (also known as percentile, quantile, or rank-order filters). Given a raw input signal of arbitrary type, origin, or scale, the present invention enables automated quantification and detection of changes in the distribution of any set of quantifiable features of that signal as they occur in time. Furthermore, the present invention'"'"'s ability to rapidly and accurately detect changes in certain features of an input signal can also enable prediction in cases where the detected changes associated with an increased likelihood of future signal changes.
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Citations
35 Claims
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1. A method of detecting a change in at least one feature of an input signal, the method comprising the steps of:
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(a) receiving the input signal;
(b) determining at least one time-weighted cumulative distribution function of the input signal;
(c) comparing the time-weighted cumulative distribution function to a reference function in order to detect the change in the feature of the input signal; and
(d) communicating detection of the change in the feature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A system for detecting a change in at least one feature of an input signal, the system comprising circuitry operable to:
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receive the input signal;
determine at least one time-weighted cumulative distribution function of the input signal;
compare the time-weighted cumulative distribution function to a reference function in order to detect the change in the feature of the input signal; and
communicate detection of the change in the feature. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification