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US 10,374,639 B2Granted
Adaptive bit-flipping decoder based on dynamic error information
AssigneeWestern Digital Technologies, Inc.
InventorsAlexander Bazarsky, Eran Sharon, Omer Fainzilber, Ran Zamir
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Abstract
A device includes a comparator configured to select a first threshold in response to a value of a variable node indicating a first logical value and to select a second threshold in response to the value of the variable node indicating a second logical value. The device also includes a variable node update circuit configured to adjust the value of the variable node in response to a number of unsatisfied check nodes associated with the variable node satisfying the selected threshold.
Claims20
A device comprising:
- a comparator configured to select a first threshold in response to a value of a variable node indicating a first logical value and to select a second threshold in response to the value of the variable node indicating a second logical value;
- and
- a variable node update circuit configured to adjust the value of the variable node in response to a number of unsatisfied check nodes associated with the variable node satisfying the selected threshold.
A method comprising:
- selecting, at a bit-flipping decoder:
- a first threshold in response to a value of a variable node indicating a first logical value;
- or
- a second threshold in response to the value of the variable node indicating a second logical value;
- and
- adjusting the value of the variable node in response to a number of unsatisfied check nodes associated with the variable node satisfying the selected threshold.
3 more elements
An apparatus comprising:
- means for selecting a first threshold in response to a value of a variable node indicating a first logical value and for selecting a second threshold in response to the value of the variable node indicating a second logical value;
- and
- means for adjusting the value of the variable node in response to a number of unsatisfied check nodes associated with the variable node satisfying the selected threshold.
Dependencies are inferred from the claim text.