{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9622687","patent":{"patent_number":"US-9622687","title":"Half step frequency feature for reliable motion classification","assignee":null,"inventors":[],"filing_date":"2014-09-03T00:00:00.000Z","publication_date":"2017-04-18T00:00:00.000Z","cpc_codes":["A61B","A61B","A61B","G01C"],"num_claims":32,"abstract":"Disclosed is an apparatus and method for classifying a motion state of a mobile device. In one embodiment, accelerometer data representing acceleration components along orthogonal x, y, and z axes of the mobile device are collected. A presence or absence of a half-step frequency relationship between the accelerometer data is determined. Last, the motion state of the device is determined based at least in part on the presence or absence of the half-step frequency relationship."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Half step frequency feature for reliable motion classification","description":"Disclosed is an apparatus and method for classifying a motion state of a mobile device. In one embodiment, accelerometer data representing acceleration components along orthogonal x, y, and z axes of ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9622687","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-9622687","citation_suggestion":"Patentable. \"Half step frequency feature for reliable motion classification\" (US-9622687). https://patentable.app/patents/US-9622687","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9622687","json":"https://patentable.app/api/llm-context/US-9622687","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:22:19.778Z"}