{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9588605","patent":{"patent_number":"US-9588605","title":"Tracking method and optical input device using the same","assignee":null,"inventors":[],"filing_date":"2014-03-11T00:00:00.000Z","publication_date":"2017-03-07T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F"],"num_claims":19,"abstract":"A tracking method of an optical input device includes: capturing a first image as a reference frame and an input image subsequent to the first image as a compare frame while the optical input device operates; computing correlation between the compare frame and the reference frame for a first correlation window to obtain a first peak correlation value; computing another correlation between the compare frame and the reference frame for a second correlation window when the first peak correlation value identified is located at a corner of the first correlation window; when a second peak correlation value of the second correlation window is determined to be greater than the first peak correlation value, computes a displacement information of the optical input device based on the pixel position associated with the second peak correlation value identified in the compare frame."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Tracking method and optical input device using the same","description":"A tracking method of an optical input device includes: capturing a first image as a reference frame and an input image subsequent to the first image as a compare frame while the optical input device o","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9588605","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-9588605","citation_suggestion":"Patentable. \"Tracking method and optical input device using the same\" (US-9588605). https://patentable.app/patents/US-9588605","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9588605","json":"https://patentable.app/api/llm-context/US-9588605","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:20:56.056Z"}