{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9672164","patent":{"patent_number":"US-9672164","title":"Methods and systems for transitioning between a user state and a supervisor state based on a next instruction fetch address","assignee":null,"inventors":[],"filing_date":"2012-05-31T00:00:00.000Z","publication_date":"2017-06-06T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F"],"num_claims":17,"abstract":"Embodiments include processing systems that determine, based on an instruction address range indicator stored in a first register, whether a next instruction fetch address corresponds to a location within a first memory region associated with a current privilege state or within a second memory region associated with a different privilege state. When the next instruction fetch address is not within the first memory region, the next instruction is allowed to be fetched only when a transition to the different privilege state is legal. In a further embodiment, when a data access address is generated for an instruction, a determination is made, based on a data address range indicator stored in a second register, whether access to a memory location corresponding to the data access address is allowed. The access is allowed when the current privilege state is a privilege state in which access to the memory location is allowed."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Methods and systems for transitioning between a user state and a supervisor state based on a next instruction fetch address","description":"Embodiments include processing systems that determine, based on an instruction address range indicator stored in a first register, whether a next instruction fetch address corresponds to a location wi","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9672164","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-9672164","citation_suggestion":"Patentable. \"Methods and systems for transitioning between a user state and a supervisor state based on a next instruction fetch address\" (US-9672164). https://patentable.app/patents/US-9672164","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9672164","json":"https://patentable.app/api/llm-context/US-9672164","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:20:57.125Z"}