{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8497930","patent":{"patent_number":"US-8497930","title":"Automatic focusing method and device in high-noise environment","assignee":null,"inventors":[],"filing_date":"2009-08-15T00:00:00.000Z","publication_date":"2013-07-30T00:00:00.000Z","cpc_codes":["H04N","H04N"],"num_claims":11,"abstract":"An automatic focusing method and device in a high-noise environment are used for determining a focusing distance between a digital imaging device and an object to be photographed. The automatic focusing method includes the steps of capturing M pre-photographed images at different object distances respectively; loading the pre-photographed images; superposing every N (N<M) pre-photographed images to create (M−N+1) composite images; redefining the object distances corresponding to the (M−N+1) composite images; calculating high-frequency signals in the focusing regions of the (M−N+1) composite images; determining an optimum focusing object distance based on the relation between the high-frequency signals and corresponding object distances; and adjusting an automatic focusing lens to the optimum focusing object distance and accomplishing focusing."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Automatic focusing method and device in high-noise environment","description":"An automatic focusing method and device in a high-noise environment are used for determining a focusing distance between a digital imaging device and an object to be photographed. The automatic focusi","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8497930","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-8497930","citation_suggestion":"Patentable. \"Automatic focusing method and device in high-noise environment\" (US-8497930). https://patentable.app/patents/US-8497930","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8497930","json":"https://patentable.app/api/llm-context/US-8497930","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T06:31:13.925Z"}