| 摘要 |
<P>PROBLEM TO BE SOLVED: To lengthen a retention period of data. <P>SOLUTION: A computer system includes a host 10 such as a personal computer, and a USB memory device 100 connected to the host 10. The USB memory device 100 includes a NAND type flash memory 130 for storing data for users, and an OTP memory 140. In the NAND type flash memory 130, besides the data for users, an ECC_A that is a first code for error correction corresponding to the data for users is stored. In the OTP memory 140, an ECC_B that is a second code for error correction corresponding to the ECC_A is stored. <P>COPYRIGHT: (C)2013,JPO&INPIT |
