PatentsDB

Method and portable terminal for estimating step length of pedestrian

US8990046B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8990046-B2
Application numberUS-201113180333-A
CountryUS
Kind codeB2
Filing dateJul 11, 2011
Priority dateJul 9, 2010
Publication dateMar 24, 2015
Grant dateMar 24, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A method and apparatus of a portable terminal estimate a step length of a pedestrian. An accelerometer detects acceleration caused by a movement of the portable terminal as a pedestrian carrying the portable terminal walks. A gyroscope detects angular velocity caused by the movement of the portable terminal as the pedestrian walks. A controller determines a magnitude of a swinging motion of the portable terminal by using at least one of the detected acceleration and angular velocity, determines that the portable terminal makes the swinging motion when the magnitude of the swinging motion is equal to or greater than a predetermined value, determines a carrying position of the portable terminal in the pedestrian's body by using at least one of the detected acceleration and angular velocity, and estimates a step length of the pedestrian according to the determined carrying position of the portable terminal.

First claim

Opening claim text (preview).

What is claimed is: 1. A portable terminal comprising: an accelerometer embedded in the portable terminal configured to detect acceleration due to a movement of the portable terminal as a pedestrian carrying the portable terminal walks; a gyroscope embedded in the portable terminal configured to detect angular velocity due to the movement of the portable terminal as the pedestrian carrying the portable terminal walks; and a controller configured to determine a magnitude of a s…

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Frequently asked questions

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What does patent US8990046B2 cover?
A method and apparatus of a portable terminal estimate a step length of a pedestrian. An accelerometer detects acceleration caused by a movement of the portable terminal as a pedestrian carrying the portable terminal walks. A gyroscope detects angular velocity caused by the movement of the portable terminal as the pedestrian walks. A controller determines a magnitude of a swinging motion of the…
Who is the assignee on this patent?
Lee Jae-Myeon, Park Chan-Gook, Hong Hyun-Su, and 5 more
What technology area does this patent fall under?
Primary CPC classification G01C22/006. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Mar 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).