| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a data carrier which can correctly recognize a position relation of surface/backside judgement by a card reader side and independently have a first function corresponding to the surface side of a card and a second function corresponding to the backside individually. <P>SOLUTION: A non-contact type data carrier 1 receives radio waves 20 transmitted from a card reader 1 by an antenna and an information communication part to acquire required power and information. Required processing is carried out by a control part based on the acquired information and information stored in a multi-value memory. By a surface/backside judging part, surface or backside of the data carrier 1 is detected based on the direction of electric current flowing in a coil L. Based on the detection result, different functions are carried out. <P>COPYRIGHT: (C)2008,JPO&INPIT |
