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Title:
NONCONTACT BODY, DEVICE AND METHOD FOR SWITCHING COMMUNICATION PROTOCOL
Document Type and Number:
Japanese Patent JP2011028614
Kind Code:
A
Abstract:

To make it difficult to monitor communication data between a noncontact body and a reader/writer.

The noncontact body performs steps of: generating a random number; switching a communication protocol with the reader/writer by the random number; and transmitting the random number to the reader/writer. A device provided with the reader/writer performs steps of: receiving the random number from the noncontact body by the reader/writer; and switching a communication protocol with the noncontact body of the reader/writer by the random number.


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Inventors:
HIRANO SEIJI
ARAI KAZUE
MATSUDO KENJI
Application Number:
JP2009175141A
Publication Date:
February 10, 2011
Filing Date:
July 28, 2009
Export Citation:
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Assignee:
TOPPAN PRINTING CO LTD
International Classes:
G06K19/07; G06K17/00; H04B1/59
Domestic Patent References:
JPH11127088A1999-05-11
JPH10336744A1998-12-18
JPH10224341A1998-08-21
JP2002319003A2002-10-31
JPH11120307A1999-04-30
JPS60220647A1985-11-05
JP2009129413A2009-06-11



 
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