Efficient readout from analog memory cells using data compression

摘要

A method for data storage includes storing data in a group of analog memory cells by writing respective input storage values to the memory cells in the group. After storing the data, respective output storage values are read from the analog memory cells in the group. Respective confidence levels of the output storage values are estimated, and the confidence levels are compressed. The output storage values and the compressed confidence levels are transferred from the memory cells over an interface to a memory controller.

主权项

1. An apparatus for data storage, comprising:
an interface, which is configured to communicate with a memory device comprising a plurality of analog memory cells; and a processor, which is configured to receive over the interface output storage values that have been read from a group of the analog memory cells, to receive over the interface respective confidence levels that have been computed for the output storage values and compressed, to decompress the received confidence levels and to reconstruct data stored in the group of the analog memory cells responsively to the output storage values and the decompressed confidence levels.