| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a non-contact IC card which enables stable information reading via a reader-writer side even if a user holds any one of four corners of the IC card. <P>SOLUTION: Since this non-contact IC card 1 has a nearly rhombic sigmoid shape in which an antenna 3 avoids partially four corners 2a, 2b, 2c and 2d of nearly rectangle of a card base 2, information can be read stably at the reader-writer side, even if the user holds any one of the four corners of the IC card. <P>COPYRIGHT: (C)2009,JPO&INPIT |
