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:
Dec. 11, 2012
Filed:
Dec. 04, 2007
Saipradeep Venkatraman, Santa Clara, CA (US);
Quanwei Liu, Santa Clara, CA (US);
Lionel Garin, Palo Alto, CA (US);
SaiPradeep Venkatraman, Santa Clara, CA (US);
Quanwei Liu, Santa Clara, CA (US);
Lionel Garin, Palo Alto, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
A navigation system includes a pressure sensor, a calibration module in communication with the pressure sensor, and an altitude module in communication with the calibration module. The calibration module is configured to determine a dynamic pressure proportionality coefficient based at least in part on a static pressure proportionality coefficient, a measured pressure value from the pressure sensor, and a velocity value. The altitude module is configured to calculate a sensor-based altitude value based at least in part on the determined dynamic pressure proportionality coefficient.