Thresholds for soft reads of data
AssigneeMicron Technology, Inc.
InventorsMUSTAFA N. KAYNAK, SIVAGNANAM PARTHASARATHY
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Abstract
A method for selecting Soft Bit Read (SBR) thresholds in a memory device, includes setting, by a controller, a range of SBR thresholds around a Hard Read Position (HRP) for the memory device. The controller calculates mutual information for each set of SBR thresholds within the range of SBR thresholds. The controller calculates a theoretical compression ratio for each set of SBR thresholds in the range of SBR thresholds. The controller selects SBR thresholds from the range of SBR thresholds that provide a balance of the mutual information and the theoretical compression ratio.
Claims20
A method for selecting Soft Bit Read (SBR) thresholds in a memory device, comprising:
- setting, by a controller, a range of SBR thresholds around a Hard Read Position (HRP) for the memory device;
- calculating, by the controller, mutual information for each set of SBR thresholds within the range of SBR thresholds;
- calculating, by the controller, a theoretical compression ratio for each set of SBR thresholds in the range of SBR thresholds;
- and
- selecting, by the controller, SBR thresholds from the range of SBR thresholds that provide a balance of the mutual information and the theoretical compression ratio.
A system for selecting Soft Bit Read (SBR) thresholds in a memory device, comprising:
- a memory device;
- and
- a processing device coupled to the memory device, the processing device to perform operations comprising:
- setting, by a controller, a range of SBR thresholds around a Hard Read Position (HRP) for the memory device;
- calculating, by the controller, mutual information for each set of SBR thresholds within the range of SBR thresholds;
- calculating, by the controller, a theoretical compression ratio for each set of SBR thresholds in the range of SBR thresholds;
- and
- selecting, by the controller, SBR thresholds from the range of SBR thresholds that provide a balance of the mutual information and the theoretical compression ratio.
A non-transitory computer-readable storage medium comprising instructions that, when executed by a processing device, cause the processing device to perform operations comprising:
- setting, by a controller, a range of SBR thresholds around a Hard Read Position (HRP) for a memory device;
- calculating, by the controller, mutual information for each set of SBR thresholds within the range of SBR thresholds;
- calculating, by the controller, a theoretical compression ratio for each set of SBR thresholds in the range of SBR thresholds;
- and
- selecting, by the controller, SBR thresholds from the range of SBR thresholds that provide a balance of the mutual information and the theoretical compression ratio.
Dependencies are inferred from the claim text.