| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an information processor selecting a proper operation mode even when a plurality of operation modes are present when exchanging data with a card type medium. <P>SOLUTION: This information processor has: a card slot inserted with the card type medium; a first operation mode, a second operation mode, and a third operation mode operating three kinds of communication speeds; a non-interrupt maximum data size acquisition means capable of exchanging the data without generating an interrupt in the second operation mode; a decision means deciding the operation mode having a highest communication speed when exchanging the data with the card type medium of the first operation mode, the second operation mode, and the third operation mode based on a first communication speed, a second communication speed, a third communication speed, and the non-interrupt maximum data size; and a data communication means selecting the operation mode decided that it has the highest communication speed by the decision means. <P>COPYRIGHT: (C)2009,JPO&INPIT |
