{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11487475","patent":{"patent_number":"US-11487475","title":"Control method for referring to expired block table to perform expired block recycling operation and associated flash memory controller and memory device","assignee":null,"inventors":[],"filing_date":"2021-02-24T00:00:00.000Z","publication_date":"2022-11-01T00:00:00.000Z","cpc_codes":["G06F","G11C","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G11C","G11C","G11C","G11C","G06F","G06F"],"num_claims":20,"abstract":"A control method is applied to a flash memory controller, which includes the following steps: creating a write time table, wherein the write time table records block numbers of blocks having data stored therein and corresponding first time and second time; referring to the write time table to determine whether there is at least one first block in the flash memory module whose first time is earlier than a first threshold, and if so, recording the at least one first block into an expired block table; referring to the write time table to determine whether there is at least one second block in the flash memory module whose second time is earlier than a second threshold, and if so, recording the at least one second block into the expired block table; and referring to the expired block table to perform an expired block recycling operation."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Control method for referring to expired block table to perform expired block recycling operation and associated flash memory controller and memory device","description":"A control method is applied to a flash memory controller, which includes the following steps: creating a write time table, wherein the write time table records block numbers of blocks having data stor","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11487475","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-11487475","citation_suggestion":"Patentable. \"Control method for referring to expired block table to perform expired block recycling operation and associated flash memory controller and memory device\" (US-11487475). https://patentable.app/patents/US-11487475","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11487475","json":"https://patentable.app/api/llm-context/US-11487475","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T02:40:44.358Z"}