{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9721353","patent":{"patent_number":"US-9721353","title":"Optical positional information detection apparatus and object association method","assignee":null,"inventors":[],"filing_date":"2015-11-24T00:00:00.000Z","publication_date":"2017-08-01T00:00:00.000Z","cpc_codes":["G06T","G06F","G06F","G06F","G06T","G06F"],"num_claims":16,"abstract":"An optical positional information detection apparatus for detecting a position indicated by a pointer on a display surface. The optical positional information detection apparatus includes an imaging unit that captures an image of one or more pointers situated within a predetermined distance from the display surface; an image obtaining unit that obtains a first image captured by the imaging unit and a second image captured by the imaging unit; a movement distance calculation unit that uses a first feature amount based on the first image in which first pointers are captured and a second feature amount based on the second image in which second pointers are captured so that the movement distance calculation unit calculates a movement distance from the first pointers to the second pointers; and an association unit that associates the second pointers with the first pointers based on a limitation on the movement distance."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical positional information detection apparatus and object association method","description":"An optical positional information detection apparatus for detecting a position indicated by a pointer on a display surface. The optical positional information detection apparatus includes an imaging u","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9721353","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-9721353","citation_suggestion":"Patentable. \"Optical positional information detection apparatus and object association method\" (US-9721353). https://patentable.app/patents/US-9721353","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9721353","json":"https://patentable.app/api/llm-context/US-9721353","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:20:52.360Z"}