| 发明名称 |
PORTABLE COMMUNICATION TERMINAL, HOST COMMUNICATION DEVICE, AND RFID SYSTEM |
| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a portable communication terminal not requiring a dedicated charger, and prevented from being left in an uncharged state, and also to provide an RFID system provided with the portable communication terminal and a host communication device. <P>SOLUTION: This portable communication terminal 200 is equipped with: an antenna 201 for communication with the host communication device 300; an electric power converting circuit 202 for converting an induced electromotive force induced in the antenna 201 into a direct current voltage; and a storage battery 203. The propriety of charging the storage battery 203 is determined by comparing either of a reference value provided in the portable communication terminal 200 or a reference value set in the host communication device 300 by a user of the RFID system, with a residual amount in the storage battery 203. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
| 申请公布号 |
JP2011060169(A) |
申请公布日期 |
2011.03.24 |
| 申请号 |
JP20090211472 |
申请日期 |
2009.09.14 |
| 申请人 |
RICOH CO LTD |
发明人 |
TSUJI MASAAKI;FUJII TATSUYA |
| 分类号 |
G06K17/00;G06K19/07;H04B1/40;H04B5/02;H04M1/00 |
主分类号 |
G06K17/00 |
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