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US 2008/0259708 A1Published application
Memory controller
AssigneeMegaChips Corporation
InventorsFumiaki TSUKAZAKI, Tetsuo Furuichi
Life of this patent
Estimating the term…
Abstract
A memory controller for controlling data access to a memory comprises a refresh controller. A read count memory part included in the refresh controller counts the number of read operations on each page of the memory and stores the read count therein. If the read count for any page exceeds a predetermined number, the refresh controller rewrites data stored in this page into the memory.
Claims16
A memory controller for controlling access to a rewritable nonvolatile semiconductor memory, comprising:
- area determination means for determining a refresh target area in a memory area of said nonvolatile semiconductor memory;
- and
- rewriting means for rewriting stored data which is stored in said refresh target area into the memory area in said nonvolatile semiconductor memory.
Dependencies are inferred from the claim text.