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. 08, 2016
Filed:
Nov. 10, 2014
Apple Inc., Cupertino, CA (US);
David C. Beard, Los Gatos, CA (US);
Richard J. Topliss, Campbell, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An actuator module which includes a Hall sensor, configured to generate output signals indicating a displacement of a mobile component by a Lorentz actuator mechanism, can be calibrated to remove corruption of the output signals due to magnetic fields generated by a coil assembly of the actuator mechanism. Such calibration can include tracking and manipulating one or more of current strength, output signal voltage strength, and mobile component displacement to establish a relationship between output signal voltage and current applied to the coil assembly. The relationship can be used to generate, for a given generated output signal voltage and applied current strength, an offset signal voltage which can be subtracted from the voltage strength of the output signal to determine a corrected output signal, independent of coil assembly corruption, which indicates a displacement of the mobile component.