| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for improving efficiency of communication protocol, when an IC card conducts chain transmission/reception. <P>SOLUTION: A communication library 21 of a system program 20 controlling the IC card divides data into data length shorter than or equal to maximum information field length of a connection device (IFSD) and performs chain transmission to the connection device, when information length of the data transmitted from an application 30 to the connection device is longer than the IFSD on transmission from the IC card. When data, whose information length is shorter than the maximum information field length of the IC card (IFSC), are received at the reception of the IC card, the data are temporarily stored in a buffer by the communication library 21, and the load related to the chain transmission/reception of the application 30 is reduced by combining the data in the communication library 21 to transfer to the application 30. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
