| 摘要 |
<P>PROBLEM TO BE SOLVED: To minimize the degradation of a record rate due to the update of a logic conversion table, in a memory card drive composed of a plurality of memory cards and whose speed is increased by the parallel operation of the memory cards. <P>SOLUTION: The memory card 13 retains data and an address conversion table in a nonvolatile memory 30. The address conversion table 23 indicates a correspondence relationship between a logic address issued to the memory card and the physical address of the nonvolatile memory built in. If a write error occurs during the write of data, an update of the address conversion table of the memory card is detected. Even an undetected memory card updates an address conversion table so that the plurality of memory cards are synchronized. In this way, the degradation of a write transfer rate is minimized. <P>COPYRIGHT: (C)2010,JPO&INPIT |
