| 摘要 |
PROBLEM TO BE SOLVED: To shorten a block search time during parallel writing by efficiently searching an unused block in the case of performing parallel writing of continuously inputted data to a plurality of memories connected to the same bus.SOLUTION: A bit map information by block numbers storage part 107 stores bit map information by block numbers representing with a bit map whether blocks having a common block number are respectively used or unused in each different block number. An empty block management part 106 sequentially analyzes bit maps in each different block number of the bit map information by block numbers, and searches an unused block in the case that parallel writing is performed. |
