| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems in utilizing only one piece of information such as the number of times of elimination in each block of a nonvolatile memory as reliability (degradation level) of each block, that one piece of held information itself may be eliminated by some accident, and reliability based on dispersion in characteristic of each block already existing in producing a memory, cannot be measured from the information indicating use performance such as the number of times of elimination. <P>SOLUTION: This nonvolatile memory system includes a nonvolatile memory device capable of eliminating data only by a unit of block, acquires plural kinds of operational information of the nonvolatile memory device by the unit of block, and holds the acquired operational information. That is, not single information such as the number of times of elimination but plural kinds of operational information are acquired on each block. <P>COPYRIGHT: (C)2008,JPO&INPIT |
