{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11476930","patent":{"patent_number":"US-11476930","title":"Optical time domain reflectometer, method of testing optical transmission line, and test system of optical transmission line","assignee":null,"inventors":[],"filing_date":"2019-04-25T00:00:00.000Z","publication_date":"2022-10-18T00:00:00.000Z","cpc_codes":["H04B"],"num_claims":17,"abstract":"An object is to automatically detect a failure of an optical transmission line. A light source outputs a monitoring light. An optical detection unit detects a return light from an optical transmission line and outputs a detection signal indicating an intensity of the return light. An optical multiplexer/demultiplexer outputs the monitoring light input from the light source to the optical transmission line, and outputs the return light input from the optical transmission line to the optical detection unit. A comparator compares the detection signal with a threshold voltage and outputs a comparison signal indicating the comparison result. A processing unit detects a first timing at which the comparison signal changes, and detects a failure of the optical transmission line when the first timing is earlier than a reference timing."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical time domain reflectometer, method of testing optical transmission line, and test system of optical transmission line","description":"An object is to automatically detect a failure of an optical transmission line. A light source outputs a monitoring light. An optical detection unit detects a return light from an optical transmission","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11476930","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-11476930","citation_suggestion":"Patentable. \"Optical time domain reflectometer, method of testing optical transmission line, and test system of optical transmission line\" (US-11476930). https://patentable.app/patents/US-11476930","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11476930","json":"https://patentable.app/api/llm-context/US-11476930","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T23:05:30.067Z"}