{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9817752","patent":{"patent_number":"US-9817752","title":"Data integrity enhancement to protect against returning old versions of data","assignee":null,"inventors":[],"filing_date":"2015-02-24T00:00:00.000Z","publication_date":"2017-11-14T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F"],"num_claims":19,"abstract":"Systems, methods and/or devices are used to enhance data integrity to protect against returning old versions of data. In one aspect, a method includes (1) receiving a write request from a host that specifies write data for a set of logical block addresses, (2) mapping, using a mapping table, the set of logical block addresses to a set of physical addresses, where the mapping table includes a plurality of subsets, and (3) performing operations for each subset of the mapping table that includes at least one entry corresponding to a logical block specified by the set of logical block addresses, including: (a) generating metadata for the subset, the metadata including a version number for the subset, (b) calculating a Cyclic Redundancy Check (CRC) checksum for the subset, and (c) storing the version number for the subset and the CRC checksum for the subset in a version data structure."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Data integrity enhancement to protect against returning old versions of data","description":"Systems, methods and/or devices are used to enhance data integrity to protect against returning old versions of data. In one aspect, a method includes (1) receiving a write request from a host that sp","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9817752","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9817752","citation_suggestion":"Patentable. \"Data integrity enhancement to protect against returning old versions of data\" (US-9817752). https://patentable.app/patents/US-9817752","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9817752","json":"https://patentable.app/api/llm-context/US-9817752","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:37:03.474Z"}