| 摘要 |
<p>When the capacity of a reception buffer is small, data cannot be received securely. In addition, the detection rate of transmission errors due to the influence of noise or the like is low. An IC card reader/writer comprises a reception buffer state flag 305 that is set when a reception buffer 304 cannot store more data, an overrun check section 306 that checks that new data has been received when the reception buffer state flag 305 has been set, and a retransmission request signal generation section 102 that requests an IC card to retransmit the received data when the overrun check section 306 detects an overrun, wherein, in the case when new data has been received when the reception buffer 304 cannot store more data, a retransmission request is made to the IC card so as to receive the same data again. <IMAGE></p> |
