{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10491801","patent":{"patent_number":"US-10491801","title":"Focusing device, camera system, and focusing method","assignee":null,"inventors":[],"filing_date":"2017-11-21T00:00:00.000Z","publication_date":"2019-11-26T00:00:00.000Z","cpc_codes":["H04N","H04N","H04N","H04N","H04N"],"num_claims":13,"abstract":"A focusing device includes at least one circuit which controls a first focusing operation using a contrast detection scheme, a second focusing operation using a phase detection scheme, and a setting operation to set a limited range. The circuit is configured to, in the first focusing operation, obtain a contrast evaluation value for positions of a focus lens within the limited range and a predetermined range beyond the limited range, and control a focusing operation based on the obtained contrast evaluation value, and in the second focusing operation, determine an out-of-focus state if a focal position of the focus lens based on a calculated defocus amount is outside the limited range or outside a first limited range having a boundary outside the limited range."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Focusing device, camera system, and focusing method","description":"A focusing device includes at least one circuit which controls a first focusing operation using a contrast detection scheme, a second focusing operation using a phase detection scheme, and a setting o","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10491801","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-10491801","citation_suggestion":"Patentable. \"Focusing device, camera system, and focusing method\" (US-10491801). https://patentable.app/patents/US-10491801","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10491801","json":"https://patentable.app/api/llm-context/US-10491801","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T00:17:17.984Z"}