{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9753649","patent":{"patent_number":"US-9753649","title":"Tracking intermix of writes and un-map commands across power cycles","assignee":null,"inventors":[],"filing_date":"2015-03-16T00:00:00.000Z","publication_date":"2017-09-05T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F"],"num_claims":23,"abstract":"Systems, methods and/or devices are used to enable tracking intermix of writes and un-map commands across power cycles. In one aspect, the method includes (1) receiving, at a storage device, a plurality of commands from a host, the storage device including non-volatile memory, (2) maintaining a log corresponding to write commands and un-map commands from the host, (3) maintaining a mapping table in volatile memory, the mapping table used to translate logical addresses to physical addresses, (4) saving the mapping table, on a scheduled basis that is independent of the un-map commands, to the non-volatile memory of the storage device, (5) saving the log to the non-volatile memory, and (6) upon power up of the storage device, rebuilding the mapping table from the saved mapping table in the non-volatile memory of the storage device and from the saved log in the non-volatile memory of the storage device."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Tracking intermix of writes and un-map commands across power cycles","description":"Systems, methods and/or devices are used to enable tracking intermix of writes and un-map commands across power cycles. In one aspect, the method includes (1) receiving, at a storage device, a plurali","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9753649","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-9753649","citation_suggestion":"Patentable. \"Tracking intermix of writes and un-map commands across power cycles\" (US-9753649). https://patentable.app/patents/US-9753649","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9753649","json":"https://patentable.app/api/llm-context/US-9753649","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:41:11.483Z"}