Efficient Readout from 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, comprising:
a plurality of memory cells; circuitry configured to:
read a plurality of values from a subset of the plurality of memory cells, wherein each value of the plurality of values corresponds to data stored in a respective one of the subset of the plurality of memory cells;determine a plurality of confidence levels dependent upon the plurality of values; andcompress the plurality of confidence levels.