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:
Jun. 20, 2017
Filed:
Dec. 15, 2015
Parade Technologies, Ltd., Santa Clara, CA (US);
Michael Patrick Hills, Lynnwood, WA (US);
Patrick N. Prendergast, Clinton, WA (US);
Wei He, Shanghai, CN;
PARADE TECHNOLOGIES, LTD., Santa Clara, CA (US);
Abstract
A method calculates the position of a conductive object hovering above a plurality of mutual capacitance sensors, where each mutual capacitance sensor is represented as a unit cell in an array of unit cells. The method measures the capacitance of each sensor. The method identifies a peak unit cell based on the measured capacitances and calculates an edge cutoff value. A plurality of unit cells with measured capacitances within a range defined by the edge cutoff value are selected and the position of the hovering object is calculated. In some embodiments, the array comprises a first plurality of capacitance sensing electrodes disposed along a first axis and a second plurality of capacitance sensing electrodes disposed along a second axis. In some embodiments, the array and a controller form a user interface device, and the controller is configured to calculate the position of the conductive object using the method described above.