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Patent Searching and Data


Title:
POWER RECEIVING DEVICE
Document Type and Number:
Japanese Patent JP2014067403
Kind Code:
A
Abstract:

To provide a semiconductor device that is capable of wireless communication, which can transmit and receive individual information, without checking remaining capacity of a battery or changing batteries due to deterioration with time in the battery for a drive power source, and maintain a proper transmission/reception state of individual information, even when electric power of an electromagnetic wave from a reader/writer is not sufficient.

The semiconductor device includes a signal processing circuit, a first antenna circuit connected to the signal processing circuit, an antenna circuit group, a rectifier circuit group, and a battery connected to the signal processing circuit. The first antenna circuit transmits and receives a signal for transmitting data stored in the signal processing circuit and drives a power supply circuit. Each antenna circuit of the antenna circuit group receives a signal for charging the battery and includes antennas each of which has a different corresponding frequency.


Inventors:
NAGATA TAKESHI
TAMURA TERU
Application Number:
JP2013178352A
Publication Date:
April 17, 2014
Filing Date:
August 29, 2013
Export Citation:
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Assignee:
SEMICONDUCTOR ENERGY LAB
International Classes:
G06K19/07; B42D25/305; G06K19/077; G09F3/00; H02J7/00
Domestic Patent References:
JP2003070187A2003-03-07
JP2006519580A2006-08-24
JP2000090221A2000-03-31