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US 7,294,109 B2Granted
Method and apparatus for a morphology-preserving smoothing filter
AssigneeCardiac Pacemakers, Inc.
InventorsEric G. Lovett, Robert J. Sweeney
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AssigneeCardiac Pacemakers, Inc.
InventorsEric G. Lovett, Robert J. Sweeney
Estimating the term…
A method and apparatus for implementing a signal morphology preservation smoothing scheme. The smoothing scheme includes generating an output signal representative of a filtered version of the input signal, wherein the output signal is generated by adaptively removing low amplitude, high frequency noise components while simultaneously preserving signal morphology of the input signal. The smoothing scheme includes comparison of a distance metric against a distance threshold to determine whether an initial smoothed version of the input signal would be oversmoothed or undersmoothed. Then the smoothing scheme appropriately increments, decrements, or maintains the initial level of smoothing to generate an optimal smoothed signal representative of the output signal.
A method for processing a physiologically sensed input signal representative of a desired waveform for analysis to identify or monitor a physiologic state or event, the input signal including a noise component, the desired waveform having spikes with a larger amplitude than an amplitude of the noise component, the method comprising:
A method for processing a physiologically sensed input signal representative of a desired waveform for analysis to identify or monitor a physiologic state or event, the input signal including a noise component, the desired waveform having spikes with a larger amplitude than an amplitude of the noise component, the method comprising:
A system for filtering a physiologically sensed input signal representative of a desired waveform for analysis to identify or monitor a physiologic state or event, the input signal including a noise component, the desired waveform having spikes with a larger amplitude than an amplitude of the noise component, the system comprising a processor to:
A system for processing a physiologically sensed input signal representative of a desired waveform for analysis to identify or monitor a physiologic state or event, the input signal including a noise component, the desired waveform having spikes with a larger amplitude than an amplitude of the noise component, the system comprising:
A system for processing a physiologically sensed input signal representative of a desired waveform for analysis to identify or monitor a physiologic state or event, the input signal including a noise component, the desired waveform having spikes with a larger amplitude than an amplitude of the noise component, comprising:
A system for processing a physiologically sensed input signal detected by at least one detector, the input signal representative of a desired waveform for analysis to identify or monitor a physiologic state or event, the input signal including a noise component, the desired waveform having spikes with a larger amplitude than an amplitude of the noise component, the system comprising:
Dependencies are inferred from the claim text.