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:
Apr. 02, 2024
Filed:
Jun. 29, 2020
Ceva Technologies, Inc., Mountain View, CA (US);
Seth Sternberg, Mountain View, CA (US);
Steven Francz, Mountain View, CA (US);
Stephen Scheirey, Mountain View, CA (US);
Chad Lucien, Mountain View, CA (US);
Friedrich Geck, Mountain View, CA (US);
Peter Christopher Wood, Mountain View, CA (US);
Bryan A. Cook, Silver Spring, MD (US);
Mark Turner, Mountain View, CA (US);
CEVA TECHNOLOGIES, INC., Mountain View, CA (US);
Abstract
Method, apparatus, and systems for roll angle estimation for an input/gesture device (IGD) are disclosed. The method includes estimating a first axis vector of the input/gesture device (IGD) relative to the surface of the mobile device (MD), as a first frame of reference, using readings from a first type of sensor; and estimating the first axis vector of the IDG relative to a different, second frame of reference using a gyroscope integration of readings from the 3-axis gyroscope. The method further includes aligning the first axis vector of the IDG in the first frame of reference with the first axis vector of the IDG in the second frame of reference; minimizing a change in the alignment of the first axis vectors between the first frame of reference and the second frame of reference; and determining the roll angle of the IDG relative to the surface of the MD.