Samsung patents storage method that groups memory chunks by usage
Samsung describes a storage device where memory blocks are split into sub-blocks of different sizes. A controller sorts these sub-blocks into pools based on how often they are erased or accessed, then assigns them to virtual memory blocks.
In the filing’s own words
A storage device includes: memory device including a plurality of memory blocks, each of the plurality of memory blocks comprising a plurality of sub-blocks, wherein at least two sub-blocks of the plurality of sub-blocks have different sizes; and a memory controller configured to manage the plurality of memory blocks and the plurality of sub-blocks, wherein the memory controller is further configured to: based on a predetermined sub-block attribute criteria, select at least one sub-block from the plurality of sub-blocks, add the selected at least one sub-block to at least one sub-block pool, and based on the predetermined sub-block attribute criteria, allocate the selected at least one sub-block in the at least one sub-block pool to a virtual memory block.
What exactly they claim (claim 1)
1. A storage device comprising: a memory device comprising a plurality of memory blocks, each of the plurality of memory blocks comprising a plurality of sub-blocks, wherein at least two sub-blocks of the plurality of sub-blocks have different sizes; and a memory controller configured to manage the plurality of memory blocks and the plurality of sub-blocks, wherein the memory controller is further configured to: based on a predetermined sub-block attribute criteria, select at least one sub-block from the plurality of sub-blocks, add the selected at least one sub-block to at least one sub-block pool, and based on the predetermined sub-block attribute criteria, allocate the selected at least one sub-block in the at least one sub-block pool to a virtual memory block, wherein the predetermined sub-block attribute criteria includes at least one of an erase count or a data access frequency of the at least one sub-block.
Facts
- Company
- Samsung (SAMSUNG ELECTRONICS CO., LTD.)
- Official title
- Sub block based storage device and method for managing sub block thereof
- Patent number
- US12748540B2
- Application number
- 18908260
- Filed
- Oct 7, 2024
- Granted
- Sep 29, 2026
- Inventors
- 3
- Claims
- 20
Classified under
G06F 3/0631 Physics & computingG06F 3/0614 Physics & computingG06F 3/0644 Physics & computingG06F 3/0673 Physics & computingMore from Samsung in Chips & hardware
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.