{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11483067","patent":{"patent_number":"US-11483067","title":"Optical time domain reflectometer, test method of optical transmission line, and test system of optical transmission line","assignee":null,"inventors":[],"filing_date":"2019-04-25T00:00:00.000Z","publication_date":"2022-10-25T00:00:00.000Z","cpc_codes":["H04B","H04B"],"num_claims":12,"abstract":"An optical detection unit detects a return light and outputs a detection signal. An optical multiplexer/demultiplexer outputs the monitoring light to the optical transmission line, and outputs the return light to the optical detection unit. A processing unit detects a first timing at which the detection signal becomes less than a first threshold value, detects a second timing at which the detection signal becomes less than a second threshold value, and calculates a first change rate of the detection signal in a period between the first and second timings. The processing unit changes the first and second threshold values to calculate the first change rate for a plurality of periods, and, when a second change rate between the first change rates in two adjacent periods is greater than a threshold value, either of the first and second timings in one period is detected as the breakage position."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical time domain reflectometer, test method of optical transmission line, and test system of optical transmission line","description":"An optical detection unit detects a return light and outputs a detection signal. An optical multiplexer/demultiplexer outputs the monitoring light to the optical transmission line, and outputs the ret","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11483067","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-11483067","citation_suggestion":"Patentable. \"Optical time domain reflectometer, test method of optical transmission line, and test system of optical transmission line\" (US-11483067). https://patentable.app/patents/US-11483067","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11483067","json":"https://patentable.app/api/llm-context/US-11483067","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T07:01:46.028Z"}