Title:
COMMUNICATION DEVICE
Document Type and Number:
Japanese Patent JP2002359511
Kind Code:
A
Abstract:
To provide a communication device, capable of expanding the communication area with remaining power consumption low and without increasing the voltage of a power supply.
The communication device as an aspect of the present invention for communicating with a non-contact information medium in a prescribed communication area has a plurality of antennae, each of which is capable of operating in a communication area smaller than the prescribed communication area with prescribed power and is disposed, so that the small communication area covers the prescribed communication area, and a communication section for communicating with the non-contact information medium via at least one of the plurality of antennae.
Inventors:
SATO KAZUO
NAKAGAWA KAZUNARI
SUZUMURA SHINTARO
NAKAGAWA KAZUNARI
SUZUMURA SHINTARO
Application Number:
JP2001167385A
Publication Date:
December 13, 2002
Filing Date:
June 01, 2001
Export Citation:
Assignee:
HITACHI MAXELL
HITACHI VIDEO & INF SYST
HITACHI VIDEO & INF SYST
International Classes:
G06K17/00; G06K19/00; G06K19/07; H01Q1/24; H04B5/02; B42D15/10; (IPC1-7): H01Q1/24; B42D15/10; G06K17/00; G06K19/00; G06K19/07; H04B5/02
Attorney, Agent or Firm:
Ryosuke Fujimoto
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