| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems that a small card same in physical shape and different in an extended specification cannot be identified, and an illegal nonstandard small card cannot also be identified in an information device provided with a small card slot mounting a small card. <P>SOLUTION: An extended small card or an illegal card can be identified by checking response content in issuing a predetermined command a plurality of times which is to be responded only by extended small card, and by checking a predetermined bit value indicating compatibility with extended specification in the small card. <P>COPYRIGHT: (C)2008,JPO&INPIT |
