Samsung patents storage method to speed up data mapping updates
Samsung has been granted a patent for a storage device that manages how data is located on non-volatile memory. The system uses a controller to update mapping tables and metadata, allowing it to skip certain steps when writing data to the memory's meta area.
In the filing’s own words
A storage device includes a non-volatile memory device including a user area including a plurality of first memory blocks, and a meta area including an address mapping table including an address mapping information for the plurality of first memory blocks and a meta data mapping table including meta data for the address mapping table. The address mapping table includes a sub-address mapping table, and the meta data mapping table includes meta data for the sub-address mapping table. A storage controller of the storage device updates at least one of the meta data to perform a first update operation on the sub-address mapping table and address mapping information of the sub-address mapping table to perform a second update operation on the sub-address mapping table, and flushes the address mapping table into the meta area based on a result of the update.
What exactly they claim (claim 1)
1. A storage device comprising: a non-volatile memory device comprising a user area including a plurality of first memory blocks, and a meta area comprising an address mapping table including address mapping information for the plurality of first memory blocks and a meta data mapping table including meta data for the address mapping table, wherein the address mapping table includes a sub-address mapping table, and the meta data mapping table includes meta data for the sub-address mapping table; and a storage controller configured to update at least one of the meta data to perform a first update operation and address mapping information of the sub-address mapping table to perform a second update operation within the storage controller, and flush the meta data for the sub-address mapping table into the meta area based on the first update operation in response to a boost flag bit indicating the sub-address mapping table is boosted, wherein the sub-address mapping table is program-skipped in a flush operation.
Facts
- Company
- Samsung (SAMSUNG ELECTRONICS CO., LTD.)
- Official title
- Storage device, method of operating storage device, and storage system including the storage device
- Patent number
- US12748693B2
- Application number
- 18963857
- Filed
- Nov 29, 2024
- Granted
- Sep 29, 2026
- Inventors
- 1
- Claims
- 19
Classified under
G06F 12/0246 Physics & computingG06F 12/0292 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.