| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a portable electronic device and an IC card which can automatically close a logical channel which is once opened after a fixed period lapses. <P>SOLUTION: The IC card which supports the logical channel is provided with a logical channel closing means for closing the logical channel which is once opened after the predetermined fixed period lapses, by a specific command to logical channels except a basic channel. <P>COPYRIGHT: (C)2008,JPO&INPIT |
