PORTABLE DEVICE AND POWER SUPPLY SYSTEM

Title:

PORTABLE DEVICE AND POWER SUPPLY SYSTEM

Document Type and Number:

WIPO Patent Application WO/2012/073305

Kind Code:

A1

Abstract:

Provided is a portable device providing appropriate magnetic shielding when coil position is shared for a low frequency noncontact power supply and for high frequency communication. The portable device includes: a chassis; a coil at the outer surface side; a circuit which is placed on the inside of the chassis and which via the coil receives electric power on the basis of a first frequency, while carrying out communication on the basis of a second frequency; and a magnetic shield disposed between the coil and the inner region of the chassis. The first frequency is lower than the second frequency, and the magnetic permeability of the first part of the magnetic shield on the inner region side of the shield is higher than the magnetic permeability of the second part on the coil side of the shield under the aforementioned first frequency.

Inventors:

UCHIDA AKIYOSHI (JP)
TAGUCHI MASAKAZU (JP)
SHIMOKAWA SATOSHI (JP)
MATSUI KIYOTO (JP)
KAWANO HIROYASU (JP)

Application Number:

PCT/JP2010/071253

Publication Date:

June 07, 2012

Filing Date:

November 29, 2010

Export Citation:

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Assignee:

FUJITSU LTD (JP)
UCHIDA AKIYOSHI (JP)
TAGUCHI MASAKAZU (JP)
SHIMOKAWA SATOSHI (JP)
MATSUI KIYOTO (JP)
KAWANO HIROYASU (JP)

International Classes:

G06K19/07; H04M1/02

Foreign References:

JP2004364199A	2004-12-24
JPS63305599A	1988-12-13
JPH09135189A	1997-05-20
JPH08241386A	1996-09-17

Other References: