{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8495354","patent":{"patent_number":"US-8495354","title":"Apparatus for determining during a power-on sequence, a value to be written to a first register in a secure area and the same value to a second register in non-secure area, which during a protected mode, the value is compared such that if it is equal, enabling writing to a memory","assignee":null,"inventors":[],"filing_date":"2008-09-24T00:00:00.000Z","publication_date":"2013-07-23T00:00:00.000Z","cpc_codes":["G06F"],"num_claims":17,"abstract":"Systems and methods of securely updating BIOS are disclosed. One such system comprises a reprogrammable memory, a first and a second register, and comparison logic. The reprogrammable memory comprises a first portion and a protect input. The protect input is configured to disallow writes to at least the first portion when the memory protect input is at a first level, and to allow writes to at least the first portion when the protect input is at a second level; The comparison logic is configured to drive a comparison output to a third level responsive to the first and second registers having equal values, and to drive the comparison output to a fourth level responsive to the first and second registers having different values. The comparison output is electrically coupled to the memory protect input."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus for determining during a power-on sequence, a value to be written to a first register in a secure area and the same value to a second register in non-secure area, which during a protected mode, the value is compared such that if it is equal, enabling writing to a memory","description":"Systems and methods of securely updating BIOS are disclosed. One such system comprises a reprogrammable memory, a first and a second register, and comparison logic. The reprogrammable memory comprises","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8495354","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-8495354","citation_suggestion":"Patentable. \"Apparatus for determining during a power-on sequence, a value to be written to a first register in a secure area and the same value to a second register in non-secure area, which during a protected mode, the value is compared such that if it is equal, enabling writing to a memory\" (US-8495354). https://patentable.app/patents/US-8495354","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8495354","json":"https://patentable.app/api/llm-context/US-8495354","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T11:50:13.363Z"}