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:
Aug. 20, 2024
Filed:
Jan. 29, 2021
Apple Inc., Cupertino, CA (US);
Lei Wang, Santa Clara, CA (US);
William J. Bencze, Half Moon Bay, CA (US);
Kumar Gaurav Chhokra, San Mateo, CA (US);
Fatemeh Ghafoori, Santa Clara, CA (US);
Stephen P. Jackson, Cupertino, CA (US);
Cheng Jia, Cupertino, CA (US);
Yi-Wen Liao, San Jose, CA (US);
Glenn D. Macgougan, Cupertino, CA (US);
Isaac T. Miller, Half Moon Bay, CA (US);
Alexandru Popovici, Mountain View, CA (US);
Christina Selle, Los Altos, CA (US);
Aditya Narain Srivastava, Fremont, CA (US);
Richard Warren, Redwood City, CA (US);
Michael P. Dal Santo, Cupertino, CA (US);
Pejman Lotfali Kazemi, Cupertino, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Described herein are techniques to enable a mobile device to perform multi-source estimation of an altitude for a location. A baseline altitude may be determined at ground level for a location and used to calibrate a barometric pressure sensor on the mobile device. The calibrated barometric pressure sensor can then estimate changes in altitude relative to ground level based on detected pressure differentials, allowing a relative altitude to ground to be determined. Baseline calibration for the barometric sensor calibration can be performed to determine an ambient ground-level barometric pressure.