Solid state disk device having a flash memory accessed by utiliz

Details Solid state disk device having a flash memory accessed by utiliz Solid state disk device having a flash memory accessed by utiliz

1996-02-08

1998-04-14

Asta, Frank J.

Boots, shoes, and leggings

395427, 39549704, 364DIG1, 36518533, G06F 1300

Patent

active

057403961

ABSTRACT:
A semiconductor disk device comprising a flash memory having a plurality of blocks, each block constructed of a block information memory area for storing the number of erase cycles of the block, a plurality of data memory areas for storing data, and a logical sector address memory area associated with each of the data memory areas for storing a logical sector address, an address conversion table for converting the logical sector address into a physical block number, and a CPU which converts the logical sector address (LSA) into the physical block number (PBN) according to the address conversion table. The CPU also searches the latest data memory area in the physical block in the flash memory based on the logical sector address and reads the content of the latest data memory area. Thus, a small-capacity address conversion table for memory management results.

REFERENCES:
patent: 5459850 (1995-10-01), Clay et al.
patent: 5465338 (1995-11-01), Clay et al.
patent: 5473765 (1995-12-01), Gibbons et al.

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