{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9645921","patent":{"patent_number":"US-9645921","title":"Start-up method for USB flash disk with synchronous flash memory and control system","assignee":null,"inventors":[],"filing_date":"2014-09-15T00:00:00.000Z","publication_date":"2017-05-09T00:00:00.000Z","cpc_codes":["G06F","G11C","G11C","G06F","G11C"],"num_claims":15,"abstract":"A start-up method for USB disk with synchronous flash memory includes steps of: (a) writing test data into a data cache zone of a flash memory according to an initiate read write clock of a flash memory controller; (b) reading the test data to a memory zone of a USB controller; (c) comparing the test data in two memory zones, and recording a comparison result and a phase parameter of read write clock; (d) delaying the initiate read write clock for one-unit delay, and repeating steps (a)˜(d); (e) if the comparison result changes from success to failure, stopping repeat the step (d); (f) selecting the phase parameter of the read write clock that corresponds to one of the comparison results in an interval with multiple continuous successful comparison results to determine a clock phase for accessing the flash memory, and then starting up the USB flash disk. The method is quick and stable."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Start-up method for USB flash disk with synchronous flash memory and control system","description":"A start-up method for USB disk with synchronous flash memory includes steps of: (a) writing test data into a data cache zone of a flash memory according to an initiate read write clock of a flash memo","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9645921","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-9645921","citation_suggestion":"Patentable. \"Start-up method for USB flash disk with synchronous flash memory and control system\" (US-9645921). https://patentable.app/patents/US-9645921","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9645921","json":"https://patentable.app/api/llm-context/US-9645921","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:38:35.041Z"}