Noncontact communication apparatus and noncontact communication method
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United States of America Patent
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May 7, 2013
Grant Date -
Dec 30, 2010
app pub date -
Jun 3, 2010
filing date -
Jun 29, 2009
priority date (Note) -
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Abstract
A noncontact communication apparatus is disclosed which includes: an antenna resonance circuit configured to have a coil for communicating with an opposite party through electromagnetic coupling; a changing block configured to change a Q-factor of the antenna resonance circuit; and a control block configured to control the antenna resonance circuit to transmit and receive data to and from the opposite party at one of a plurality of communication speeds prepared beforehand, the control block further controlling the changing block to reduce the Q-factor the higher the communication speed in use.
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