Biosignal processing method and biosignal processing apparatus

• US 10,265,027 B2
• Filed: 03/23/2015
• Issued: 04/23/2019
• Est. Priority Date: 08/27/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Moonsook, Park, Jinyoung, Cho, Seongho, Lee, Woochang, Lee, Juneyoung
• Primary Examiner(s): Downey, John R
• Application Number:
  US14/665,482
• Publication Number:
  US 20160058389A1
• Time in Patent Office: 1,492 Days
• Field of Search: None
• CPC Class Codes: A61B 2560/0252 using ambient temperature
• CPC Class Codes: A61B 2560/0257 using atmospheric pressure
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/02055 Simultaneously evaluating both cardiovascular condition and temperature
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/1102 Ballistocardiography
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/389 Electromyography [EMG]
• CPC Class Codes: A61B 5/4872 Body fat
• CPC Class Codes: A61B 5/4875 Hydration status, fluid retention of the body
• CPC Class Codes: A61B 5/681 Wristwatch-type devices
• CPC Class Codes: A61B 5/7221 Determining signal validity, reliability or quality A61B5/7207 and A61B5/7217 take precedence
• CPC Class Codes: A61B 5/7246 using correlation, e.g. template matching or determination of similarity

Abstract

A biosignal processing apparatus and a biosignal processing method are provided. The biosignal processing method includes: detecting a biosignal of a subject; detecting status information; and determining a correlation between the biosignal and the status information.

Claims

1. A biosignal processing method by a biosignal processing apparatus, the method comprising:

detecting a biosignal of a subject by the biosignal processing apparatus;

determining, by the biosignal processing apparatus, at least one external environmental factor that influences a type of the detected biosignal, based on a lookup table storing a plurality of external factors in association with a plurality of types of biosignals;

determining, by the biosignal processing apparatus, a degree of a correlation between the biosignal and a value of the determined at least one external environmental factor; and

displaying the type of the detected biosignal, a value of the detected biosignal, the value of the determined at least one external environmental factor, and a percentage of the degree of the correlation on a same screen.

2. The biosignal processing method of claim 1, wherein the determining comprising determining the degree of the correlation in response to the at least one external environmental factor having a probability of influencing the type of the detected biosignal.

3. The biosignal processing method of claim 1, wherein the type of the detected biosignal is a blood pressure signal, and the determined at least one external environmental factor is a current temperature of an external environment, and

wherein the displaying comprises displaying, on the same screen, the current temperature, the type indicating that the detected biosignal is the blood pressure signal, a value of the blood pressure signal, and the percentage of the degree of the correlation between the current temperature and the value of the blood pressure signal.

4. The biosignal processing method of claim 1, wherein the biosignal includes at least one of information about an amount of a material contained in the subject and information about a motion of the subject.

5. The biosignal processing method of claim 1, wherein the biosignal includes information about at least one of blood sugar, cholesterol, body fat, blood pressure, an electrocardiogram, ballistocardiography, photoplethysmography, and an electromyogram of the subject.

6. The biosignal processing method of claim 1, wherein the at least one external environmental factor includes at least one of a temperature of an external environment, a humidity of the external environment, and an atmospheric pressure of the external environment.

7. The biosignal processing method of claim 1, wherein the degree of the correlation represents a degree of a change in the biosignal according to a change in the value of the at least one external environmental factor.

8. The biosignal processing method of claim 1, wherein the degree of the correlation represents a range of the value of the at least one external environmental factor corresponding to a reference range of the biosignal.

9. The biosignal processing method of claim 1, wherein the determining comprises:

generating a biosignal pattern based on the biosignal in time domain;

generating an external environmental pattern based on the value of the at least one external environmental factor in the time domain; and

determining the degree of the correlation between the biosignal pattern and the external environmental pattern.

10. The biosignal processing method of claim 9, further comprising correcting the biosignal pattern based on the external environmental pattern.

11. A biosignal processing apparatus comprising:

a first sensor configured to detect a biosignal of a subject;

a second sensor configured to determine at least one external environmental factor that influences a type of the detected biosignal based on a lookup table storing a plurality of external factors in association with a plurality of types of biosignals;

a processor configured to determine a degree of a correlation between the biosignal and a value of the determined at least one external environmental factor; and

a display configured to display the type of the detected biosignal, a value of the detected biosignal, the value of the determined at least one external environmental factor, and a percentage of the degree of the correlation on a same screen.

12. The biosignal processing apparatus of claim 11, wherein the processor is further configure to determine the degree of the correlation in response to the value of the at least one external environmental factor being determined as having a probability of influencing the biosignal.

13. The biosignal processing apparatus of claim 11, further comprising a controller configured to control the first sensor based on the value of the at least one external environmental factor and the degree of the correlation.

14. The biosignal processing apparatus of claim 13, wherein the controller is further configured to activate the first sensor to detect the biosignal in response to the value of the at least one external environmental factor being in a reference range.

15. The biosignal processing apparatus of claim 14, wherein the reference range corresponds to an abnormal range of the biosignal.

16. The biosignal processing apparatus of claim 11, wherein the type of the detected biosignal is a blood pressure signal, and the determined at least one external environmental factor is a current temperature of an external environment, and

wherein the processor is further configured to control the display to display, on the same screen, the current temperature, the type indicating that the detected biosignal is the blood pressure signal, a value of the blood pressure signal, and the percentage of the degree of the correlation between the current temperature and the value of the blood pressure signal.

17. The biosignal processing apparatus of claim 11, wherein the biosignal includes at least one of information of an amount of a material contained in the subject and status information of an object contained in the subject.

18. The biosignal processing apparatus of claim 11, wherein the biosignal includes information about at least one of blood sugar, cholesterol, and body fat, blood pressure, an electrocardiogram, ballistocardiography, photoplethysmography, and an electromyogram of the subject.