{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11499831","patent":{"patent_number":"US-11499831","title":"Effective indoor localization using geo-magnetic field","assignee":null,"inventors":[],"filing_date":"2018-02-05T00:00:00.000Z","publication_date":"2022-11-15T00:00:00.000Z","cpc_codes":["G01C","G01S","G01S","H04W","G01S","H04W"],"num_claims":20,"abstract":"Various embodiments disclosed herein enable a mobile device to accurately locate where the mobile device is located indoors by measuring geomagnetic fields, and tracing relative changes in the magnetic fields as the mobile device is moved. The relative changes can be compared to a fingerprint signal map, and a trace of a portion of the path can be determined by matching the relative changes in the magnetic fields to relative changes in the fingerprint signal map. A collection of the path portions can then be connected by determining a shortest path that connects each of the path portions. In another embodiment, a step counter can also be used to constrain possible locations, and fuse the geomagnetic field and step counter information for joint indoor localization."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Effective indoor localization using geo-magnetic field","description":"Various embodiments disclosed herein enable a mobile device to accurately locate where the mobile device is located indoors by measuring geomagnetic fields, and tracing relative changes in the magneti","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11499831","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-11499831","citation_suggestion":"Patentable. \"Effective indoor localization using geo-magnetic field\" (US-11499831). https://patentable.app/patents/US-11499831","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11499831","json":"https://patentable.app/api/llm-context/US-11499831","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T16:25:02.402Z"}