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.:
Date of Patent:
May. 18, 2021
Filed:
Oct. 23, 2017
Polaris Wireless, Inc., Mountain View, CA (US);
Jerome Arthur Blaha, Jr., Redwood City, CA (US);
Polaris Wireless, Inc., Mountain View, CA (US);
Abstract
A technique for estimating the location of a wireless terminal at an unknown location in a geographic region. The technique is based on a two-part recognition, the first part being that a transient in atmospheric pressure attributed to a particular source, such as an entry door of a building opening and closing, is detectable in some environments while not being present in others. The second part of the recognition is that a correlation exists between i) the presence of a transient in the characterization of a pressure wave in the vicinity of a wireless terminal and ii) whether the wireless terminal is indoors or not. Transients in pressure waves are often present indoors but not outdoors. By accounting for the transients being detected or not being detected in the vicinity of the wireless terminal, the disclosed technique is able to estimate whether the wireless terminal is indoors.