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.

Date of Patent:
Feb. 23, 2021

Filed:

Jun. 04, 2019
Applicant:

Cambridge Touch Technologies Ltd., Cambridge, GB;

Inventors:

Riccardo Micci, Cambridge, GB;

Babak Bastani, Royston, GB;

Matteo Vit, Cambridge, GB;

Arokia Nathan, Cambridge, GB;

Paul Routley, Cambridge, GB;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/041 (2006.01); G01L 1/16 (2006.01); G01L 1/26 (2006.01); G06F 3/044 (2006.01); G01L 1/14 (2006.01);
U.S. Cl.
CPC ...
G06F 3/04144 (2019.05); G01L 1/16 (2013.01); G01L 1/26 (2013.01); G06F 3/0418 (2013.01); G06F 3/0446 (2019.05); G06F 3/04146 (2019.05); G01L 1/142 (2013.01); G06F 3/044 (2013.01); G06F 2203/04106 (2013.01);
Abstract

A method includes receiving (S), from a touch panel (), force values () corresponding to a plurality of piezoelectric sensors (). Each piezoelectric sensor corresponds to a physical location (x, y) on the touch panel. The method also includes receiving (S) an identification of which, if any, of the force values () are influenced by coupling to external electric fields. The method also includes, in response to one or more force values () being identified as influenced by coupling to external electric fields (S), setting the corresponding force values () as excluded force values (S), and setting the remaining force values () as valid force values (S). The method also includes interpolating and/or extrapolating (S), based on the valid force values, one or more reconstructed force values () corresponding to same physical locations (x, y) as the respective excluded force values ().


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