Storage management system for memory card using memory allocatio

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364970, 3649675, 3649633, 364245, 3642557, 395442, 395490, 39549704, 39542111, 358339, G06F 1202

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active

054540968

ABSTRACT:
A storage management system for a memory card, which has a storage area divided into a plurality of storage units having a predetermined storage capacity. manages the storage of information in every storage unit. The storage area includes a memory allocation table (MAT) for indicating the relationship of the storage units in which a group of mutually associated information is to be stored, and a directory for indicating one of the storage units in which the beginning portion of the group of mutually associated information is to be stored. Either the MATs or the directories indicate whether or not the storage management system inhibits writing or erasing of the information in the storage units associated with the MATs or the directories. The system further includes a storage unit table which indicates whether those storage units specified by the MATs are empty or occupied. The storage unit table is set up after searching the directories to trace the MATs associated with the directories in use, prior to writing information in the memory card. In this way, image data are efficiently managed to improve reliability of the storage management system.

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