METHODS AND SYSTEMS FOR CONDITIONING PHYSIOLOGICAL INFORMATION BASED ON A STABILITY FUNCTION
First Claim
1. A subject monitoring system for conditioning a physiological intensity signal, comprising:
- a sensor configured to generate a physiological signal, wherein the sensor detects light attenuated by a subject; and
processing equipment coupled to the sensor, wherein the processing equipment is configured to;
generate a first signal based on a Lyapunov function applied to the physiological signal;
generate a difference signal based on the first signal; and
generate a modified physiological signal based on the difference signal.
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Accused Products
Abstract
A physiological monitoring system may determine physiological information, such as physiological rate information, from a physiological signal. The system may condition the physiological signal to assist in the determination of the physiological information. The system may generate a signal based on a stability function applied to the physiological signal. The stability function may include a Lyapunov function. The system may generate a difference signal based on the stability function, and modify the physiological signal based on the difference signal. The modification may include reducing, or otherwise limiting, some differences between adjacent values in the physiological signal, removing portions of the physiological signal, or other modifications.
8 Citations
28 Claims
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1. A subject monitoring system for conditioning a physiological intensity signal, comprising:
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a sensor configured to generate a physiological signal, wherein the sensor detects light attenuated by a subject; and processing equipment coupled to the sensor, wherein the processing equipment is configured to; generate a first signal based on a Lyapunov function applied to the physiological signal; generate a difference signal based on the first signal; and generate a modified physiological signal based on the difference signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A processing module for conditioning a physiological intensity signal, wherein the processing module is configured to:
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receive a physiological signal derived from a detector output, wherein the detector detects light attenuated by a subject; generate a first signal based on a Lyapunov function applied to the physiological signal; generate a difference signal based on the first signal; and generate a modified physiological signal based on the difference signal. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for conditioning a physiological intensity signal, comprising:
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receiving, using processing equipment, a physiological signal derived from a detector output, wherein the detector detects light attenuated by a subject; generating, using the processing equipment, a first signal based on a Lyapunov function applied to the physiological signal; generating, using the processing equipment, a difference signal based on the first signal; and generating, using the processing equipment, a modified physiological signal based on the difference signal. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A computer-readable medium for use in conditioning a physiological intensity signal, the computer-readable medium having computer program instructions recorded thereon for:
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receiving a physiological signal derived from a detector output, wherein the detector detects light attenuated by a subject; generating a first signal based on a Lyapunov function applied to the physiological signal; generating a difference signal based on the first signal; and generating a modified physiological signal based on the difference signal. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification