{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11976921","patent":{"patent_number":"US-11976921","title":"Method and apparatus for reducing magnetic tracking error due to floor distortion","assignee":null,"inventors":[],"filing_date":"2022-06-07T00:00:00.000Z","publication_date":"2024-05-07T00:00:00.000Z","cpc_codes":["A61B","A61B","A61B","G07F"],"num_claims":9,"abstract":"A method and apparatus for reducing magnetic tracking error in the position and orientation determined in a magnetic tracking system having a magnetic field generator. In some embodiments, the measured position and orientation of a sensor is compared to an expected theoretical position and orientation. Any error is assumed to be from “floor distortion,” i.e., eddy currents in the floor caused by the magnetic field generated by the magnetic field transmitter. The floor distortion is modeled as being caused by eddy currents caused by a second magnetic field transmitter that is a reflection of the actual transmitter. An algorithm iteratively searches over a parameter space to minimize the difference between the measured position and orientation and the theoretical position and orientation, and applies a correction to the measured position and orientation. The measurements and corrections of the position and orientation run in real-time with no additional hardware or calibration required."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for reducing magnetic tracking error due to floor distortion","description":"A method and apparatus for reducing magnetic tracking error in the position and orientation determined in a magnetic tracking system having a magnetic field generator. In some embodiments, the measure","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11976921","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-11976921","citation_suggestion":"Patentable. \"Method and apparatus for reducing magnetic tracking error due to floor distortion\" (US-11976921). https://patentable.app/patents/US-11976921","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11976921","json":"https://patentable.app/api/llm-context/US-11976921","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T17:24:57.572Z"}