Host Flash Translation Layer Erase Count Transfer

The patent introduces a host FTL as an intermediary layer between the host and storage device. This host FTL manages erase count information and provides it to the storage device through extended command formats, thereby improving storage device reliability without requiring the storage device itself to track erase counts. The host FTL acts as a mediator that handles the complexity of memory management while enabling the storage device to operate more reliably.

The patent merges erase count information with existing command structures by extending the storage address format in program commands to include erase count data. Instead of creating separate data transfer protocols, the erase count information is combined with address information in the same command field. This approach enables precise read voltage adjustment while minimizing additional data transfer overhead by utilizing existing communication channels.

The patent implements dynamic command field formats where the structure of program commands adapts based on the operation being performed. The storage address format within program commands can be dynamically extended to include reprogram information such as erase count and page offset data. This dynamic approach allows precise program operations with varying information requirements without requiring completely separate static command formats for each scenario, thereby reducing overall system complexity.