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US 2012/0260147 A1Published application
Efficient Readout from Analog Memory Cells Using Data Compression
AssigneeApple Inc.
InventorsUri Perlmutter, Oren Golov
Life of this patent
Estimating the term…
Abstract
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.
Claims19
1-34. (canceled)
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.
A data storage method, comprising:
- receiving, from a memory device comprising a plurality of analog memory cells, output storage values that have been read from a group of the analog memory cells;
- receiving from the memory device respective confidence levels that have been computed for the output storage values and compressed;
- decompressing the received confidence levels;
- and
- reconstructing data stored in the group of the analog memory cells responsively to the output storage values and the decompressed confidence levels.
2 more elements
Dependencies are inferred from the claim text.