Shield for use with a computing device that receives an inductive signal transmission

• US 20100081483A1
• Filed: 06/04/2009
• Published: 04/01/2010
• Est. Priority Date: 09/26/2008
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Palm, Inc. (TCL Technology Group Corp.)
• Inventors: Lehr, Michael, Chatterjee, Manjirnath, Crooijmans, Wim, Corbridge, Mark
• Granted Patent: US 8,401,469 B2
• Time in Patent Office: Days
• US Class Current: 455/572
• CPC Class Codes: H01F 1/15333 containing nanocrystallites, e.g. obtained by annealing
• CPC Class Codes: H01F 2027/348 Preventing eddy currents
• CPC Class Codes: H01F 27/2804 Printed windings
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/361 made of combinations of electrically conductive material and ferromagnetic material
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01F 7/0242 Magnetic drives, magnetic coupling devices
• CPC Class Codes: H05K 9/0075 Magnetic shielding materials

Abstract

Embodiments described herein include a computing device that is capable of inductive signal transfer with other computing devices. Such computing devices are provided a shield that protects the device and other components from electromagnetic interference and unwanted electrical affects resulting from the inductive signal transfer.

Claims

10-1. The device of claim 1, wherein the inductive shield comprises material of high magnetic permeability and a center opening.

20. A computer system comprising:

a pair of computing devices, each device in the pair including one or more magnetic coils to enable that computing device to transmit or receive an inductive signal from another device in the pair;

wherein at least one of the computing devices in the pair includes an inductive shield to protect one or more electrical elements of that device from a magnetic flux used to transmit an inductive signal to or from that device.