{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8504739","patent":{"patent_number":"US-8504739","title":"USB driver interface functions to interface USB client function drivers","assignee":null,"inventors":[],"filing_date":"2012-05-04T00:00:00.000Z","publication_date":"2013-08-06T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F","G06F"],"num_claims":20,"abstract":"In embodiments of extensions for USB driver interface functions, a set of USB driver interfaces are exposed by a USB core driver stack, and the USB driver interfaces include USB driver interface functions to interface with USB client function drivers that correspond to client USB devices. A composite device driver registers itself and requests a function handle for each function of a client USB device. The USB client function drivers are enumerated and the function handles generated for each function of the client USB device. A check first protocol is enforced that directs a USB client function driver to check for availability of a USB driver interface function before interfacing with the USB core driver stack via the USB driver interfaces. A contract version identifier is received that indicates a set of operation rules by which a USB client function driver interfaces with the USB core driver stack."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"USB driver interface functions to interface USB client function drivers","description":"In embodiments of extensions for USB driver interface functions, a set of USB driver interfaces are exposed by a USB core driver stack, and the USB driver interfaces include USB driver interface funct","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8504739","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-8504739","citation_suggestion":"Patentable. \"USB driver interface functions to interface USB client function drivers\" (US-8504739). https://patentable.app/patents/US-8504739","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8504739","json":"https://patentable.app/api/llm-context/US-8504739","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T21:45:58.173Z"}