Electronic device for determining sleep state and method of controlling same

Patent metadata

Field	Value
Publication number	US-10123735-B2
Application number	US-201514960128-A
Country	US
Kind code	B2
Filing date	Dec 4, 2015
Priority date	Dec 4, 2014
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

Disclosed is a method for an electronic device. The method may include: acquiring a galvanic skin response; generating a first parameter for a first interval and a second parameter for a second interval based on the galvanic skin response, the second interval being an interval before the first interval; determining a first threshold corresponding to the first interval based on the second parameter; and determining an activity state of the first interval based on the first threshold and the first parameter corresponding to the first interval.

First claim

What is claimed is:

1. A method for determining activity state, the method comprising:
acquiring a galvanic skin response;
generating, based on the galvanic skin response, a first parameter for a first interval and a second parameter for a second interval, wherein the first interval and the second interval are time intervals and the second interval is before the first interval;
generating an asleep state determination threshold and awake state determination threshold based on the second parameter, wherein the asleep state determination threshold is smaller than the awake state determination threshold; and
determining that an activity state in the first interval is asleep state in response to the first parameter being smaller than or equal to the asleep state determination threshold and determining that the activity state in the first interval is awake state in response to the first parameter being equal to or larger than the awake state determination threshold.

2. The method of claim 1 , further comprising low-pass filtering the galvanic skin response.

3. The method of claim 2 , further comprising sampling the galvanic skin response acquired for a first period unit, wherein the first period unit is equal to the first interval.

4. The method of claim 3 , wherein generating the first parameter and the second parameter comprises calculating a first average value of sampled data for the first interval as the first parameter and calculating a second average value of sampled data of the second interval as the second parameter.

5. The method of claim 3 , wherein the second interval corresponds to a preset multiple of the first period unit.

6. The method of claim 5 , wherein the preset multiple has different values when the activity state being determined is an asleep state than when the activity state being determined is an awake state.

7. The method of claim 5 , wherein generating the asleep state determination threshold comprises determining an average value of the second parameter of the second interval.

8. The method of claim 1 , further comprising determining the activity state in the first interval is an unconfirmed state in response to the first parameter being larger than the asleep state determination threshold and smaller than the awake state determination threshold.

9. The method of claim 8 , further comprising determining an activity state of the unconfirmed state based on at least one of the activity state of intervals before and after the first interval.

10. The method of claim 9 , wherein the activity state of the unconfirmed interval is determined to be the asleep state when both of the intervals prior to and after the unconfirmed interval are in an asleep state.

11. An electronic device for determining activity state, the electronic device comprising:
a sensor module that acquires a galvanic skin response; and
a processor configured to:
generate a first parameter for a first interval and a second parameter for a second interval based on the galvanic skin response, wherein the first interval and the second interval are time intervals and the second interval is before the first interval,
determine an asleep state determination threshold and an awake state determination threshold based on the second parameter, wherein the asleep state determination threshold is smaller than the awake state determination threshold, and
determine that an activity state of the first interval is asleep state in response to the first parameter being smaller than or equal to the asleep state determination threshold and determine that the activity state in the first interval is awake state in response to the parameter being equal to or larger than the awake state determination threshold.

12. The electronic device of claim 11 , further comprising a filtering module that low-pass filters the galvanic skin response.

13. The electronic device of claim 12 , wherein the processor samples the galvanic skin response acquired for a first period unit, wherein the first period unit is equal to the first interval.

14. The electronic device of claim 13 , wherein the processor generates the first parameter as a first average value of sampled data for the first interval and generates the second parameter as a second average value of sampled data of the second interval.

15. The electronic device of claim 13 , wherein the second interval corresponds to a preset multiple of the first period unit.

16. The electronic device of claim 15 , wherein the preset multiple has different values when the activity state being determined is an asleep state than when the activity state being determined is an awake state.

17. The electronic device of claim 15 , wherein the processor generates the asleep state determination threshold as an average value of the second parameter of the second interval.

18. A method for determining activity state, the method comprising:
acquiring a galvanic skin response;
generating, based on the galvanic skin response, a first parameter for a first interval, a second parameter for a second interval, and a third parameter for a third interval, wherein the first interval, the second interval, and the third interval are time intervals, and the second interval and the third interval are before the first interval;
determining an asleep state determination threshold based on the second parameter and determining an awake state determination threshold based on the third parameter; and
determining that an activity state of the first interval is an asleep state in response to the first parameter being smaller than or equal to the asleep state determination threshold and determining that the activity state of the first interval is an awake state in response to the first parameter being equal to or larger than the awake state determination threshold.

Assignees

• Samsung Electronics Co Ltd
• Seoul Nat Univ R&Db Foundation

Inventors

• Baek Hyun-Jae
• Park Kwang-Suk
• Park Sang-Bae
• Kim Do-Yoon
• Oh Jung-Taek
• Cho Jae-Geol
• Choi Byung-Hun
• Seo Sang-Won
• Yoon Hee-Nam
• Jung Da-Woon
• Choi Sang-Ho
• Hwang Su-Hwan

Classifications

• A61B5/7271

  Specific aspects of physiological measurement analysis (specific diagnostics methods using bioelectric or biomagnetic signals A61B5/316) · CPC title

• A61B5/0533

  Measuring galvanic skin response · CPC title

• A61B5/4809 Primary

  Sleep detection, i.e. determining whether a subject is asleep or not · CPC title

• A61B5/725

  using specific filters therefor, e.g. Kalman or adaptive filters (specific diagnostics methods using using bioelectric or biomagnetic signals A61B5/316) · CPC title

• A61B5/113

  occurring during breathing · CPC title