Title:
READER/WRITER SYSTEM
Document Type and Number:
Japanese Patent JP2016009980
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a non-contact reader/writer system that enables a one-channel reader/writer to read from and write in a communication medium without relying on an input angle of the antenna surface of an IC tag and has a stable communication function especially having no places preventing reduction in reading (null part).SOLUTION: A reader/writer system comprises a reader/writer 1 for reading and writing information from and into an IC chip in a non-contact manner using electromagnetic induction. The reader/writer 1 comprises: a first coil-shaped antenna 3 electrically connected with the reader/writer; and a second coil-shaped antenna 4 electrically not connected and circulating at least one or more turns. The second coil-shaped antenna 4 includes a part where line width is different or a nonlinear part and its antenna pattern has eccentric distribution as a whole. When power is supplied to the first coil-shaped antenna 3, an electromagnetic field is also generated in the second coil-shaped antenna 4 by an electromagnetic field generated in the first coil-shaped antenna 3.
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Inventors:
KOKUBO YU
Application Number:
JP2014129037A
Publication Date:
January 18, 2016
Filing Date:
June 24, 2014
Export Citation:
Assignee:
TOPPAN PRINTING CO LTD
International Classes:
H01Q7/00; G06K17/00; H01Q1/24; H01Q3/44