The data processing method in the IC card reader-writer, and the IC card reader-writer

摘要

PROBLEM TO BE SOLVED: To deal with a plurality of standards of IC cards by means of a simple circuit arrangement. ;SOLUTION: A data input/output contact terminal 3 of an IC card reader/ writer S which is provided to be able to make contact with an I/O input terminal of an IC card 102 is connected to first and second data input/output ports P01 and P02 of a central processing part 1, and the first and second data input/ output ports P01 and P02 are set at different data transmission speeds and can simultaneously receive ATR signals after a clock signal has been supplied to the IC card 102, so that the central processing part 1 identifies the kind of the IC card 102 and subsequently transmits and receives data at the data transmission speed corresponding to the IC card 102 identified at the first port P01.;COPYRIGHT: (C)2004,JPO