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:
Nov. 27, 2018
Filed:
Dec. 23, 2016
Apple Inc., Cupertino, CA (US);
Julian Kevin Shutzberg, San Francisco, CA (US);
Adam Monkowski, Pleasanton, CA (US);
Baboo Gowreesunker, San Francisco, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Pressure compensation can be used to improve performance of force-sensitive touch screens. Changes in pressure, particularly transient, internal pressure changes in an electronic device due to an object applying force to a touch screen of the electronic device, can degrade force sensing performance of the touch screen. For example, when a finger presses a force-sensitive touch screen of a sealed electronic device, the applied force can increase internal pressure of the sealed electronic device until internal pressure can equalize. The increased internal pressure can cause a normal force to oppose the deflection of the touch screen, resulting in inaccurate force measurements of applied user force. In some examples, an electronic device including a force-sensitive touch screen can include a pressure sensor configured to measure internal pressure of the electronic device. The measured pressure can be used to compensate the amount of force measured by the force sensor.