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US 11,481,271 B2Granted
Storage system and method for using subcodes and convolutional-based LDPC interleaved coding schemes with read threshold calibration support
AssigneeWestern Digital Technologies, Inc.
InventorsEran Sharon, Idan Goldenberg, Idan Alrod, Ran Zamir, Alexander Bazarsky
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Abstract
A storage system generates a low-density parity check (LDPC) code from a plurality of subcodes. The storage system stores each subcode in a different page of a word line in the memory. The subcode can be stored in one plane in the memory or across multiple planes. When the subcodes are stored across multiple planes, they can be stored in a checkboard pattern.
Claims21
A storage system comprising:
- a memory;
- and
- a controller coupled to the memory and configured to:
- store each subcode of a plurality of subcodes in a different page of a word line in the memory;
- and
- generate a low-density parity check (LDPC) code from the plurality of subcodes stored in the different pages of the word line in the memory.
3 more elements
In a storage system comprising a memory, a method comprising:
- generating a convolutional low-density parity check (CLDPC) code;
- and
- storing different portions of the CLDPC code in different pages of a word line in the memory;
- and
- storing interleaved codewords and non-interleaved codewords in the memory, wherein the interleaved codewords and the non-interleaved codewords are stored in different word lines, different word line zones, or different blocks in the memory.
2 more elements
A storage system comprising:
- a memory;
- means for storing each subcode of a plurality of subcodes in a different page of a word line in the memory;
- and
- means for generating a low-density parity check (LDPC) code from the plurality of subcodes stored in the different pages of the word line in the memory.
1 more element
Dependencies are inferred from the claim text.