Magnetic systems for electronic devices and accessories

摘要

A cover is described that is magnetically attached to a tablet device. The cover includes at least as flap. In the described embodiment, the flap includes a plurality of segments where the first segment includes a first plurality of edge attach magnets arrayed along a first edge of the flap and where a second segment includes a second plurality of edge attach magnets arrayed along a second edge of the flap opposite the first edge.

主权项

1. A magnetic system suitable for use in a protective cover having a foldable flap formed of a layer of finishing material, the protective cover used in cooperation with a tablet device, having a display, comprising:
a first array of edge attach permanent magnets aligned with a first edge of the foldable flap; a second array of edge attach permanent magnets aligned with a second edge of the foldable flap and aligned with the first array of edge attach permanent magnets, wherein the first and second array of edge attach permanent magnets form a magnetic circuit that maintains a folded configuration of the protective cover; and a plurality of field shaping magnets disposed at selected locations on the foldable flap such that magnetic fields from the plurality of field shaping magnets interact with magnetic fields from the first array of edge attach permanent magnets to provide essentially a null magnetic field at least one predefined position corresponding to a magnetically sensitive circuit disposed in the tablet device.