{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8489122","patent":{"patent_number":"US-8489122","title":"System and method for total flight time ratio pattern matching","assignee":null,"inventors":[],"filing_date":"2011-05-20T00:00:00.000Z","publication_date":"2013-07-16T00:00:00.000Z","cpc_codes":["G01S","H04W"],"num_claims":22,"abstract":"A method and system for estimating the location of a mobile device. A range of the mobile device to a reference station may be determined as a function of the time of transmission of a first signal transmitted from a base station and as a function of the time of receipt of a second signal transmitted from the mobile device to the reference station, the second signal being a function of the first signal advanced by a timing parameter. A relationship for each of a plurality of grid points in a geographic region may be determined as a function of the determined range and a range metric. These plural grid points may contain the reference station. The determined relationship may be compared with data corresponding to each of the plural grid points, and a location of the mobile device determined as a function of the comparison."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"System and method for total flight time ratio pattern matching","description":"A method and system for estimating the location of a mobile device. A range of the mobile device to a reference station may be determined as a function of the time of transmission of a first signal tr","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8489122","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-8489122","citation_suggestion":"Patentable. \"System and method for total flight time ratio pattern matching\" (US-8489122). https://patentable.app/patents/US-8489122","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8489122","json":"https://patentable.app/api/llm-context/US-8489122","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T22:12:55.735Z"}