{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9677912","patent":{"patent_number":"US-9677912","title":"Rotation angle detection device","assignee":null,"inventors":[],"filing_date":"2016-02-04T00:00:00.000Z","publication_date":"2017-06-13T00:00:00.000Z","cpc_codes":["G01D","G01D"],"num_claims":8,"abstract":"A rotation angle detection device includes: a magnetic field generation portion that generates a magnetic field; and a first magnetism detection element and a second magnetism detection element disposed to have an angle of 90° therebetween in a rotation direction of the detection target and to rotate relative to the magnetism generation portion. The first magnetism detection element outputs a first output signal, and the second magnetism detection element outputs a second output signal. An amplitude shift correction circuit matches amplitudes of the first output signal and the second output signal which differ in phase by 90° from each other. A rotation angle computation circuit connected to the amplitude shift correction circuit computes and outputs a rotation angle of a detection target based on the first output signal and the second output signal having matched amplitudes."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Rotation angle detection device","description":"A rotation angle detection device includes: a magnetic field generation portion that generates a magnetic field; and a first magnetism detection element and a second magnetism detection element dispos","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9677912","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-9677912","citation_suggestion":"Patentable. \"Rotation angle detection device\" (US-9677912). https://patentable.app/patents/US-9677912","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9677912","json":"https://patentable.app/api/llm-context/US-9677912","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:21:21.549Z"}