Wireless communication tag and wireless communication system
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United States of America Patent
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Mar 19, 2013
Grant Date -
Apr 23, 2009
app pub date -
Oct 16, 2008
filing date -
Oct 17, 2007
priority date (Note) -
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Abstract
A wireless communication tag according to the present invention includes a first antenna 8 previously set with predetermined identification information, and for wirelessly communicating various types of data with a reader/writer 6; a controller (IC chip 14) for controlling the data communicated through the first antenna; a second antenna 10 for receiving an electromotive radio wave 4e for causing electric power by a radio wave; and a charging unit (rectifying circuit 16 and a capacitor 18) for causing electric power by the electromotive radio wave received from the second antenna as well as for storing the caused electric power. With use of the electric power stored in the charging unit, the first antenna supplies data relating to the identification information to the reader/writer. The second antenna also can provide the reader/writer with the identification information.
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