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US 10,540,289 B2Granted
Data storage device and flash memory control method
AssigneeSilicon Motion, Inc.
InventorWen-Sheng Lin
Life of this patent
Estimating the term…
Abstract
A flash memory control technology with high reliability. In a power recovery process, a microcontroller is configured to duplicate a last write page of a run-time write block of a flash memory and thereby generate a duplicated page in the run-time write block to replace the last write page for reliability enhancement.
Claims16
A data storage device, comprising:
- a flash memory, providing a storage space that is divided into a plurality of physical blocks with each physical block further divided into a plurality of physical pages;
- and
- a control unit, comprising a microcontroller and coupled between a host and the flash memory,
- wherein:
- the microcontroller is configured to duplicate a last write page of a run-time write block between the plurality of physical blocks during a power recovery process and thereby generate a duplicated page in the run-time write block to replace the last write page for reliability enhancement;
- and
- the microcontroller is configured to write dummy data into a next page with respect to the last write page during the power recovery process to make the next page with respect to the last write page a dummy page.
4 more elements
A flash memory control method, comprising:
- duplicating a last write page of a run-time write block between a plurality of physical blocks of a flash memory during a power recovery process and thereby generate a duplicated page in the run-time write block;
- replacing the last write page by the duplicated page for reliability enhancement;
- and
- writing dummy data into a next page with respect to the last write page during the power recovery process to make the next page with respect to the last write page a dummy page.
1 more element
Dependencies are inferred from the claim text.