| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve such a problem that, when performing memory mirroring, it is not possible to secure all the data unless having a mirror memory with the same capacity as that of a main memory. <P>SOLUTION: The memory redundancy apparatus includes: a main memory for storing data; a partial mirror memory not requiring the same capacity as that of the main memory and retaining redundancy data of the main memory; and a controller that adopts a pseudo LRU algorithm for storing data that is written in the main memory lastly, in the mirror memory, and leaves data having a relatively high access frequency and a mask address in the mirror memory. <P>COPYRIGHT: (C)2013,JPO&INPIT |
