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. 05, 2017
Filed:
Feb. 25, 2015
Apple Inc., Cupertino, CA (US);
Brian Michael King, Saratoga, CA (US);
Omar S. Leung, Palo Alto, CA (US);
Paul G. Puskarich, Palo Alto, CA (US);
Jeffrey Traer Bernstein, San Francisco, CA (US);
Andrea Mucignat, San Francisco, CA (US);
Avi E. Cieplinski, San Francisco, CA (US);
Muhammad Umar Choudry, Mississauga, CA;
Praveen R. Subramani, San Diego, CA (US);
Marc J. Piche, Waterloo, CA;
David Amm, Sisters, OR (US);
Duncan Robert Kerr, San Francisco, CA (US);
Apple Inc., Cupertino, unknown;
Abstract
Compensation for sensors in a touch and hover sensing device is disclosed. Compensation can be for sensor resistance and/or sensor sensitivity variation that can adversely affect touch and hover measurements at the sensors. To compensate for sensor resistance, the device can gang adjacent sensors together so as to reduce the overall resistance of the sensors. In addition or alternatively, the device can drive the sensors with voltages from multiple directions so as to reduce the effects of the sensors' resistance. To compensate for sensor sensitivity variation (generally at issue for hover measurements), the device can apply a gain factor to the measurements, where the gain factor is a function of the sensor location, so as to reduce the sensitivity variation at different sensor locations on the device.