{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9644973","patent":{"patent_number":"US-9644973","title":"Indoor location signalling via light fittings","assignee":null,"inventors":[],"filing_date":"2014-03-26T00:00:00.000Z","publication_date":"2017-05-09T00:00:00.000Z","cpc_codes":["G01C","H04W","H04W"],"num_claims":19,"abstract":"Disclosed here are methods and systems that relate to determining a location of a mobile device in an indoor environment. The indoor environment is installed with one or more light sources at disparate locations. Each light source has a unique light attribute different from that of other light sources. The mobile device is equipped with a photosensor to detect light emissions by the light sources. The methods and systems described herein may determine the location of the mobile device based on the light detection by the photosensor."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Indoor location signalling via light fittings","description":"Disclosed here are methods and systems that relate to determining a location of a mobile device in an indoor environment. The indoor environment is installed with one or more light sources at disparat","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9644973","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-9644973","citation_suggestion":"Patentable. \"Indoor location signalling via light fittings\" (US-9644973). https://patentable.app/patents/US-9644973","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9644973","json":"https://patentable.app/api/llm-context/US-9644973","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:08:23.405Z"}