Apparatus and method for processing signal
First Claim
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1. A signal processing method, comprising:
- receiving smoothing parameters and a to-be-separated signal, wherein the to-be-separated signal is generated according to a physiological signal, and the smoothing parameters are adjusted according to the physiological signal;
establishing an upper extreme envelope and a lower extreme envelope of the to-be-separated signal, wherein the upper extreme envelope and the lower extreme envelope respectively represent every local maxima and every local minima of the to-be-separated signal;
calculating a mean envelope between the upper extreme envelope and the lower extreme envelope;
performing smoothing according to the smoothing parameters and the mean envelope to generate a smoothed mean envelope;
determining a trend component or a non-trend component of the to-be-separated signal according to the smoothed mean envelope, wherein the trend component represents tendency of the to-be-separated signal, and the non-trend component of the to-be-separated signal represents fluctuation on the trend component; and
using the trend component to represent a physiological signal of a patient representative of a health aspect of the patient.
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Abstract
An apparatus and a method for processing signal are provided. The signal processing apparatus comprises an input interface and a processing unit. The input interface receives smoothing parameters and a to-be-separated signal. The processing unit establishes an upper extreme envelope and a lower extreme envelope of the to-be-separated signal, and calculates a mean envelope between the upper extreme envelope and the lower extreme envelope. The processing unit performs smoothing according to the smoothing parameters and the mean envelope to generate a smoothed mean envelope, and determines a trend component or a non-trend component according to the smoothed mean envelope.
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Citations
27 Claims
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1. A signal processing method, comprising:
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receiving smoothing parameters and a to-be-separated signal, wherein the to-be-separated signal is generated according to a physiological signal, and the smoothing parameters are adjusted according to the physiological signal; establishing an upper extreme envelope and a lower extreme envelope of the to-be-separated signal, wherein the upper extreme envelope and the lower extreme envelope respectively represent every local maxima and every local minima of the to-be-separated signal; calculating a mean envelope between the upper extreme envelope and the lower extreme envelope; performing smoothing according to the smoothing parameters and the mean envelope to generate a smoothed mean envelope; determining a trend component or a non-trend component of the to-be-separated signal according to the smoothed mean envelope, wherein the trend component represents tendency of the to-be-separated signal, and the non-trend component of the to-be-separated signal represents fluctuation on the trend component; and using the trend component to represent a physiological signal of a patient representative of a health aspect of the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A signal processing apparatus, comprising:
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an input interface used for receiving smoothing parameters and a to-be-separated signal, wherein the to-be-separated signal is generated according to a physiological signal, and the smoothing parameters are adjusted according to the physiological signal; and a processing unit used for establishing an upper extreme envelope and a lower extreme envelope of the to-be-separated signal, wherein the upper extreme envelope and the lower extreme envelope respectively represent every local maxima and every local minima of the to-be-separated signal, calculating a mean envelope between the upper extreme envelope and the lower extreme envelope, wherein the processing unit performs smoothing according to the smoothing parameters and the mean envelope to generate a smoothed mean envelope, and determines a trend component or a non-trend component of the to-be-separated signal according to the smoothed mean envelope, wherein the trend component represents tendency of the to-be-separated signal, and the non-trend component of the to-be-separated signal represents fluctuation on the trend component; and using the trend component to represent a physiological signal of a patient representative of a health aspect of the patient. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification