| 摘要 |
A drive device capable of preventing a drop in the data transfer rate, even when write instructions from a host device are given with commands having a short write data length. If the write end address of one of a plurality of A TA commands issued by a host device 2 is consecutive with the write start addre ss of the next ATA command, a command analysis unit 11 has data writing to an S D card 1 by the consecutive commands performed in a single process. As a resul t, overheads when writing data to SD cards are incurred only once, allowing the transfer rate to be improved.
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