Storage and method to rearrange data of logical addresses belonging to a sub-region selected based on read counts
US11709612B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 2021 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | May 2, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data storage device includes a memory device including multiple memory blocks corresponding to multiple sub-regions and a memory controller. The memory controller accesses the memory device and updates content of a read count table in response to a read command with at least one designated logical address issued by a host device. Each field of the read count table records a read count associated with one sub-region and the content of the read count table is updated by increasing the read count associated with the sub-region that the designated logical address belongs to. The memory controller selects at least one sub-region to be rearranged according to the content of the read count table and performs a data rearrangement procedure to move data of logical addresses belonging to the selected at least one sub-region to a first memory space of the memory device having continuous physical addresses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.