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. 02, 2021
Filed:
May. 24, 2019
Apple Inc., Cupertino, CA (US);
Christopher S. Graham, San Francisco, CA (US);
Karl Ruben F. Larsson, Los Altos, CA (US);
Grant S. Haug, Mountain View, CA (US);
Aaron A. Oro, Palo Alto, CA (US);
Benjamin J. Pope, Mountain View, CA (US);
Sherry Lee, Oakland, CA (US);
Tang Yew Tan, Palo Alto, CA (US);
Richard Hung Minh Dinh, Saratoga, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Embodiments describe a portable electronic device that includes a housing having an interface surface and an inductor coil disposed within the housing and comprising a conductive wire wound in a plurality of turns about a center point and in increasing radii such that the inductor coil is substantially planar. The portable electronic device further includes charging circuitry coupled to the inductor coil and configured to operate the inductor coil to wirelessly receive power and wirelessly transmit power, control circuitry coupled to the charging circuitry and configured to instruct the charging circuitry to operate the inductor coil to wirelessly receive power and to wirelessly transmit power, and a device detection coil coupled to the control circuitry and configured to detect the presence of an external device on the charging surface, the device detection coil is configured to operate at a different frequency from the inductor coil.