| 摘要 |
<P>PROBLEM TO BE SOLVED: To search in a short time for a management block stored in memory. <P>SOLUTION: A storage area of a flash memory 3 is partitioned into a plurality of areas Area0, Area1, Area2, .... Each of the areas has a marking block including a specific page (page0) that stores information indicating whether or not a central management block exists within that area. For example, when all columns forming the specific page (page0) assume zero values, no central management block exists in the area in which the specific page belongs, and so that when there is at least one column with a value of one, it is defined to show that the central management block exists in the area in which the specific page belongs. If the uppermost block of the corresponding area is not a Bad block, the specific page is provided within the uppermost block; if it is the Bad block, the specific page is provided within the block (normal block other than Bad block) subsequent to the Bad block. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
