{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8477119","patent":{"patent_number":"US-8477119","title":"Optical touch system, apparatus and method for calculating the position of an object","assignee":null,"inventors":[],"filing_date":"2011-01-03T00:00:00.000Z","publication_date":"2013-07-02T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F"],"num_claims":12,"abstract":"An optical touch system, an apparatus and a method for calculating the position of an object are provided. The apparatus includes an image sensor and a processing circuit. The processing circuit selects at least one dot from a curve segment of a brightness distribution profile obtained from a background image, wherein the curve segment corresponds to an imaging range of an object. And the processing circuit regards the column pixel brightness value corresponding to the dot as a brightness reference value. Afterwards, the processing circuit calculates brightness difference between the brightness reference value and the column pixel brightness values corresponding to the dots of a curve segment of a brightness distribution profile obtained from a sensed image, so as to further calculate a gravity of the imaging range. After that, the processing circuit regards the gravity as a representative position of the object in the sensed image."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical touch system, apparatus and method for calculating the position of an object","description":"An optical touch system, an apparatus and a method for calculating the position of an object are provided. The apparatus includes an image sensor and a processing circuit. The processing circuit selec","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8477119","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-8477119","citation_suggestion":"Patentable. \"Optical touch system, apparatus and method for calculating the position of an object\" (US-8477119). https://patentable.app/patents/US-8477119","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8477119","json":"https://patentable.app/api/llm-context/US-8477119","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T01:15:17.162Z"}