Systems and methods for variable filter adjustment by heart rate metric feedback
First Claim
1. A physiological signal processing apparatus, comprising:
- a memory comprising a non-transitory computer readable medium having computer program instructions stored therein; and
at least one processor coupled to the memory, wherein the at least one processor is configured to execute the computer program instructions stored in the memory to perform operations comprising;
extracting, via the at least one processor, a heart rate metric for a subject from a cardiovascular signal component of a physiological waveform provided by a physiological sensor that is coupled to the at least one processor; and
resetting the extracting of the at least one processor in response to determining that the physiological waveform is no longer being obtained, wherein the determining that the physiological waveform is no longer being obtained is responsive to detecting a loss of proximity of the physiological sensor to a body of the subject.
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Accused Products
Abstract
A physiological signal processing system for a physiological waveform that includes a cardiovascular signal component provides a variable high pass filter that is responsive to the physiological waveform, and that is configured to high pass filter the physiological waveform in response to a corner frequency that is applied. A heart rate metric extractor is responsive to the variable high pass filter and is configured to extract a heart rate metric from the physiological waveform that is high pass filtered. A corner frequency adjuster is responsive to the heart rate metric extractor and is configured to determine the corner frequency that is applied to the variable high pass filter, based on the heart rate metric that was extracted. Analogous methods may also be provided.
535 Citations
19 Claims
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1. A physiological signal processing apparatus, comprising:
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a memory comprising a non-transitory computer readable medium having computer program instructions stored therein; and at least one processor coupled to the memory, wherein the at least one processor is configured to execute the computer program instructions stored in the memory to perform operations comprising; extracting, via the at least one processor, a heart rate metric for a subject from a cardiovascular signal component of a physiological waveform provided by a physiological sensor that is coupled to the at least one processor; and resetting the extracting of the at least one processor in response to determining that the physiological waveform is no longer being obtained, wherein the determining that the physiological waveform is no longer being obtained is responsive to detecting a loss of proximity of the physiological sensor to a body of the subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A physiological signal processing method for a physiological waveform that includes a cardiovascular signal component therein, the physiological signal processing method comprising:
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executing, by at least one processor, computer program instructions stored in a non- transitory computer readable medium to perform operations comprising; extracting a heart rate metric for a subject from the cardiovascular signal component of the physiological waveform, wherein the physiological waveform is provided by a physiological sensor that is coupled to the at least one processor; and resetting the extracting in response to determining that the physiological waveform is no longer being obtained, wherein the determining that the physiological waveform is no longer being obtained is responsive to detecting a loss of proximity of the physiological sensor to a body of the subject. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A computer program product for physiological signal processing, the computer program product comprising:
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a non-transitory computer readable medium having computer program instructions stored therein that, when executed by at least one processor, causes the at least one processor to perform operations comprising; extracting a heart rate metric for a subject from a cardiovascular signal component of a physiological waveform provided by a physiological sensor that is coupled to the at least one processor; and resetting the extracting in response to determining that the physiological waveform is no longer being obtained, wherein the determining that the physiological waveform is no longer being obtained is responsive to detecting a loss of proximity of the physiological sensor to a body of the subject.
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Specification