{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9639425","patent":{"patent_number":"US-9639425","title":"Signature-based sleep recovery operation flow","assignee":null,"inventors":[],"filing_date":"2015-12-14T00:00:00.000Z","publication_date":"2017-05-02T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F"],"num_claims":20,"abstract":"The present disclosure describes methods and apparatus for implementing a signature-based sleep recovery operation flow for booting a system-on-chip (SoC). When the SoC begins its normal boot flow, a controller retrieves a sleep recovery signature from a register and compares the retrieved sleep recovery signature to a default signature. If the sleep recovery signature matches the default signature, the SoC enters a ROM checksum fail debug flow and, upon satisfying the requirements of the ROM checksum fail debug flow, enters a sleep recovery boot flow, which restores the SoC to the operational state it was in prior to entering the sleep mode. If the sleep recovery signature does not match the default signature, the SoC continues with the normal boot flow or, by use of external pins, can be forced into a normal debug mode flow so that the boot code can be debugged."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Signature-based sleep recovery operation flow","description":"The present disclosure describes methods and apparatus for implementing a signature-based sleep recovery operation flow for booting a system-on-chip (SoC). When the SoC begins its normal boot flow, a ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9639425","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-9639425","citation_suggestion":"Patentable. \"Signature-based sleep recovery operation flow\" (US-9639425). https://patentable.app/patents/US-9639425","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9639425","json":"https://patentable.app/api/llm-context/US-9639425","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:22:22.238Z"}