Data reading method, storage controller and storage device
a data and data technology, applied in the direction of digital storage, input/output to record carriers, instruments, etc., can solve the problems of reducing the efficiency of the storage device, and achieve the effect of improving the efficiency of the read operation and enhancing the decoding capability
Active Publication Date: 2020-10-01
SHENZHEN EPOSTAR ELECTRONICS LTD
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
Improves the correct rate and reliability of data read operations by reducing the loading on decoding processes and optimizing the use of available storage space, leading to enhanced overall data reading efficiency.
Problems solved by technology
Consequently, an operational efficiency of the storage device is reduced due to the reduced remaining available space (because many of management operations in the storage device will require the use of the remaining available space).
Method used
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[0023]Reference will now be made in detail to the present preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
[0024]Embodiments of the present invention may comprise any one or more of the novel features described herein, including in the Detailed Description, and / or shown in the drawings. As used herein, “at least one”, “one or more”, and “and / or” are open-ended expressions that are both conjunctive and disjunctive in operation. For example, each of the expressions “at least one of A, B and C”, “at least one of A, B, or C”, “one or more of A, B, and C”, “one or more of A, B, or C” and “A, B, and / or C” means A alone, B alone, C alone, A and B together, A and C together, B and C together, or A, B and C together.
[0025]It is to be noted that the term “a” or “an” entity refers to one or more of that entity. As s...
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A memory management method is provided. The method includes: performing a read operation on a target word line; reading a plurality of target physical pages of the target word line to obtain a plurality of hard bit codewords respectively corresponding to the target physical pages; generating soft information of each of a plurality of target memory cells of the target word line according to the hard bit codewords; identifying a plurality of confidence values corresponding to the target physical pages of each of the target memory cells according to a plurality of confidence tables and the soft information of the target memory cells; and performing an adjusted preset decoding operation according to the confidence values and the soft information, so as to obtain a plurality of final decoded codewords respectively corresponding to the target physical pages and complete the read operation.
Description
CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of Taiwan application serial no. 108110631, filed on Mar. 27, 2019. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.BACKGROUNDTechnical Field[0002]The invention relates to a data reading method, and more particularly, to a data reading method adapted to a storage device disposed with a rewritable non-volatile memory module and a storage controller thereof.Description of Related Art[0003]In general, when an iterative decoding operation (e.g., a low density parity check code decoding operation) performed on a codeword read from a physical page of the rewritable non-volatile memory module is failed, the storage controller of the memory device will try to correct a log-likelihood ratio table of the iterative decoding operation according to verified data (e.g., known data pre-stored in the rewritable non-volatile ...
Claims
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IPC IPC(8): G06F3/06G11C16/26G11C16/08
CPCG06F3/0679G06F3/0619G11C16/26G11C16/08G06F3/0658G11C11/5642G11C29/52G11C2029/0411
Inventor HSIAO, YU-HUA
Owner SHENZHEN EPOSTAR ELECTRONICS LTD