Automated Diagnosis-Assisting Medical Devices Utilizing Pattern Localization Of Quasi-Periodic Signals
OwnerAndreas J. Schriefl, Andreas J. Reinischinventors
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Abstract
A method for localizing a pattern in a quasi-periodic signal includes estimating, using a controller, a rate or a frequency of a quasi-periodic signal, and defining a search window based on the estimated rate or frequency of the quasi-periodic signal. A starting position is defined in the received quasi-periodic signal, the starting position corresponding to a first maximum. A portion of the quasi-periodic signal in the search window is cross-correlated with a template signal pattern to be matched to produce a second maximum. The second maximum is defined by the controller as a new starting position. The new starting position is stored.
Claims20
A method for localizing a pattern in a quasi-periodic signal, the method comprising:
- estimating, using a controller, a rate or a frequency of a quasi-periodic signal;
- defining, using the controller, a search window based on the estimated rate or frequency of the quasi-periodic signal;
- defining, using the controller, a starting position in the received quasi-periodic signal, the starting position corresponding to a first maximum;
- cross-correlating, using the controller, a portion of the quasi-periodic signal in the search window with a template signal pattern to be matched to produce a second maximum that is defined by the controller as a new starting position;
- and
- storing, using the controller, the new starting position.
A system for localizing a pattern in a quasi-periodic signal, the system comprising:
- a processor;
- and
- a memory device with stored instructions that, when executed by the processor, cause the system to:
- estimate a rate or a frequency of a quasi-periodic signal;
- define a search window based on the estimated rate or frequency of the quasi-periodic signal;
- define a starting position in the received quasi-periodic signal, the starting position corresponding to a first maximum;
- cross-correlate a portion of the quasi-periodic signal in the search window with a template signal pattern to be matched to produce a second maximum that is defined by the controller as a new starting position;
- and
- store the new starting position.
Dependencies are inferred from the claim text.