{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8525815","patent":{"patent_number":"US-8525815","title":"Optical touch system with display screen","assignee":null,"inventors":[],"filing_date":"2010-03-21T00:00:00.000Z","publication_date":"2013-09-03T00:00:00.000Z","cpc_codes":["G06F","G06F"],"num_claims":10,"abstract":"An optical touch system includes a display screen having a contact surface, an infrared light source emitting infrared light to cover the contact surface, a linear infrared sensor having a sensing surface with a lengthwise direction thereof parallel to the contact surface, a processor, and a controller. The linear infrared sensor captures an image of the contact surface with an infrared portion representing a touch area of a contact object, the image having an aspect ratio greater than that of the contact surface. The processor determines the touch location of the contact object based on the aspect ratios of the image and the contact surface, the location of the infrared portion on the image, the area of the infrared portion and the area of the touch portion of the contact object on the contact surface. The controller executes an instruction according to the determined location of the contact object."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical touch system with display screen","description":"An optical touch system includes a display screen having a contact surface, an infrared light source emitting infrared light to cover the contact surface, a linear infrared sensor having a sensing sur","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8525815","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-8525815","citation_suggestion":"Patentable. \"Optical touch system with display screen\" (US-8525815). https://patentable.app/patents/US-8525815","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8525815","json":"https://patentable.app/api/llm-context/US-8525815","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T21:21:41.738Z"}