{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8462258","patent":{"patent_number":"US-8462258","title":"Focus signal generation for an auto-focus image system","assignee":null,"inventors":[],"filing_date":"2009-11-27T00:00:00.000Z","publication_date":"2013-06-11T00:00:00.000Z","cpc_codes":["H04N","H04N"],"num_claims":24,"abstract":"An auto focus image system that includes a pixel array coupled to a focus signal generator. The pixel array captures an image that has at least one edge with a width. The focus signal generator may generate a focus signal that is a function of the edge width and/or statistics of edge widths. A processor receives the focus signal and/or the statistics of edge widths and adjust a focus position of a focus lens. The edge width can be determined by various techniques including the use of gradients. A histogram of edge widths may be used to determine whether a particular image is focused or unfocused. A histogram with a large population of thin edge widths is indicative of a focused image."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Focus signal generation for an auto-focus image system","description":"An auto focus image system that includes a pixel array coupled to a focus signal generator. The pixel array captures an image that has at least one edge with a width. The focus signal generator may ge","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8462258","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-8462258","citation_suggestion":"Patentable. \"Focus signal generation for an auto-focus image system\" (US-8462258). https://patentable.app/patents/US-8462258","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8462258","json":"https://patentable.app/api/llm-context/US-8462258","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T23:04:14.267Z"}