| 摘要 |
<P>PROBLEM TO BE SOLVED: To increas memory access speed, while detecting and correcting an error by a single error correcting means, in an external storage device for continuously accessing sector data. <P>SOLUTION: The sector data written by a host 2 are temporarily stored in a write buffer 7. A microprocessor 8 stores the data in a first memory 4 when the sector data stored in the write buffer are odd-numbered sector data and stores them in a second memory 5 when they are even-numbered sector data. When the host 2 reads the sector data, in a data switching means 11, the Nth sector data read from the first memory are output to a system bus and the (N+1)-th sector data read from the second memory (the sector data to be read next by the host computer) are output to an error correction means simultaneously. Thus, it is possible to apparently shorten the time required for error detection and error correction for the (N+1)-th sector data. <P>COPYRIGHT: (C)2008,JPO&INPIT |
