Heading constraints in a particle filter

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United States of America Patent

PATENT NO 9759561
APP PUB NO 20160195391A1
SERIAL NO

14714216

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Abstract

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A method for computing a correction to a compass heading for a portable device worn or carried by a user is described. The method involves determining a heading for the device based on a compass reading, collecting data from one or more sensors, determining if the device is indoors or outdoors based on the collected data, and correcting the heading based on the determination of whether the device is indoors or outdoors.

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Patent Owner(s)

  • TRX SYSTEMS, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Funk, Benjamin Hanover, US 30 424
Hakim, Dan Silver Spring, US 19 218
Karvounis, John Bowie, US 27 288
Miller, John Ellicott City, US 250 11046
Napora, Jared Severn, US 25 521
Teolis, Carole Glenn Dale, US 41 698
Young, Travis Rockville, US 40 429

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