{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9597014","patent":{"patent_number":"US-9597014","title":"GPS accuracy refinement using external sensors","assignee":null,"inventors":[],"filing_date":"2014-05-29T00:00:00.000Z","publication_date":"2017-03-21T00:00:00.000Z","cpc_codes":["A61B","A61B","A61B","A61B","A61B","A61B","A61B","A61B","A61B","A61B","A61B","A61B","A61B","A61B","A61B","A61B","A61B","A61B","A61B","A61B","G01S","G01S","H04W","A61B","H04L","H04W"],"num_claims":24,"abstract":"Biometric monitoring devices, including various technologies that may be implemented in such devices, are discussed herein. Additionally, techniques for enhancing GPS speed and distance measurements based on step counts measured by a biometric monitoring device are provided. Such techniques may, in some implementations, involve blending two independently-measured data streams of raw distance traveled—one based on inter-coordinate GPS coordinate distances and one based on step count and stride length—using a Kalman filter to provide an enhanced-accuracy measurement of distance or speed traveled. In some other or additional implementations, distances or speeds calculated based on inter-coordinate GPS coordinate distances may be smoothed with a smoothing constant that is proportional to the variance in measured step count."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"GPS accuracy refinement using external sensors","description":"Biometric monitoring devices, including various technologies that may be implemented in such devices, are discussed herein. Additionally, techniques for enhancing GPS speed and distance measurements b","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9597014","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-9597014","citation_suggestion":"Patentable. \"GPS accuracy refinement using external sensors\" (US-9597014). https://patentable.app/patents/US-9597014","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9597014","json":"https://patentable.app/api/llm-context/US-9597014","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:59:57.717Z"}