Patent ID: 8239735
Filing Date: 2012-08-07
Classification: G06F,G11C

Abstract:
1. A method for data storage in a memory that includes a plurality of analog memory cells, the method comprising: estimating respective achievable storage capacities of the analog memory cells; assigning the memory cells respective storage configurations defining quantities of data to be stored in the memory cells based on the estimated achievable capacities; storing the data in the memory cells in accordance with the respective assigned storage configurations; re-estimating the respective achievable storage capacities of the analog memory cells after the memory has been installed in a host system and used for storing the data in the host system, and modifying the storage configurations responsively to the re-estimated achievable capacities, wherein assigning and modifying the storage configurations comprise maintaining a predetermined margin between the quantities of the data stored in the memory cells and the respective estimated achievable capacities.