Silicon Motion Technology has been granted a patent for a method, storage medium, and apparatus for accessing encoding-history information in flash storage. The invention enables recovery of damaged pages by programming history information into designated pages, improving data reliability in flash memory systems. GlobalData’s report on Silicon Motion Technology gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Silicon Motion Technology, M2M communication interfaces was a key innovation area identified from patents. Silicon Motion Technology's grant share as of March 2024 was 80%. Grant share is based on the ratio of number of grants to total number of patents.
Method for accessing encoding-history information in flash storage
A recently granted patent (Publication Number: US11966607B2) discloses a method for accessing encoding-history information in a storage system. The method involves providing a super-block consisting of multiple flash units, each containing zones with super-page strings and pages. The encoding-history information, including a history profile and history entries, is programmed into a metadata section of a designated page. This information helps in identifying damaged pages and enables their recovery by discarding specific pages and feeding the remaining content to an engine for recovery. The patent also covers scenarios where dummy pages or uncorrectable error correction code (UECC) pages are involved, as well as the storage of parity information for the pages within the super-page string.
Furthermore, the patent extends to a non-transitory computer-readable storage medium and an apparatus for accessing encoding-history information. The medium includes program code for providing a super-block, programming encoding-history information, and facilitating damaged page recovery. The apparatus comprises a flash interface and a processing unit to carry out similar functions, including reading encoding-history information, discarding pages, and recovering damaged pages. The patent also details the structure of the history profile and history entries, indicating the zones covered in the super-block and the pages that have not undergone parity generation. Overall, the patent aims to enhance data recovery processes in storage systems by utilizing encoding-history information effectively.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
