IC tag communication system
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United States of America Patent
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Mar 3, 2009
Grant Date -
Mar 22, 2007
app pub date -
Mar 2, 2006
filing date -
Sep 22, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An IC tag communication system according to an aspect of the present invention includes: a plurality of reader antennas which receive radio waves emitted from an IC tag attached to an article, the radio waves being at least partly overlapped with each other; a plurality of readers which are connected respectively to the reader antennas; and a phase adjustment section for adjusting the phases of the radio waves that the reader antennas receive to each other.
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