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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10324109 B1

PDFFull Text
Date of Patent:
Jun. 18, 2019

Filed:

Sep. 15, 2016

Determining a time period a person is in bed

Applicant:

Vital Connect, Inc., Campbell, CA (US);

Inventors:

Alexander Chan, Campbell, CA (US);

Ravi Narasimhan, Sunnyvale, CA (US);

Assignee:

VITAL CONNECT, INC., San Jose, CA (US);

Attorney:

Brundidge & Stanger, P.C.

Primary Examiner:

Paul D Lee

Assistant Examiner:

Mark I Crohn

Int. Cl.
CPC ...
A61B 5/00 (2006.01); G01D 21/00 (2006.01); A61B 5/11 (2006.01); G01P 21/00 (2006.01); G04F 13/04 (2006.01); G06F 17/00 (2019.01); G07C 1/00 (2006.01); G01P 15/18 (2013.01); G01P 15/00 (2006.01); G06F 17/40 (2006.01); G06F 19/00 (2018.01);
U.S. Cl.
CPC ...
G01P 21/00 (2013.01); A61B 5/0002 (2013.01); A61B 5/1115 (2013.01); A61B 5/1116 (2013.01); A61B 5/1118 (2013.01); A61B 5/1121 (2013.01); A61B 5/4809 (2013.01); G01P 15/18 (2013.01); G04F 13/04 (2013.01); G06F 17/00 (2013.01); G07C 1/00 (2013.01); A61B 5/00 (2013.01); A61B 5/11 (2013.01); A61B 2560/0223 (2013.01); A61B 2562/0219 (2013.01); A61B 2562/0247 (2013.01); G01D 21/00 (2013.01); G01P 15/00 (2013.01); G06F 17/40 (2013.01); G06F 19/00 (2013.01);
Abstract

A method and wireless sensor device for determining a time period a person is in bed. In one aspect, a method includes utilizing a wireless sensor device to obtain a plurality of acceleration samples in relation to at least one axis associated with a person's body over a predetermined time window. The method also includes calculating a polar angle for each acceleration sample within the predetermined time window. The method also includes calculating a fraction of an amount of time within the predetermined time window that the polar angle is greater than an angle threshold that indicates that the person is lying down, where if the fraction is greater than a predetermined threshold, the predetermined time window is marked as a period the person is lying down.

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