{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11936423","patent":{"patent_number":"US-11936423","title":"Fault detection apparatus, fault detection method, and submarine cable system","assignee":null,"inventors":[],"filing_date":"2021-02-05T00:00:00.000Z","publication_date":"2024-03-19T00:00:00.000Z","cpc_codes":["H04B","H04L","H04B"],"num_claims":17,"abstract":"A fault detection apparatus includes: a transmitter that transmits a first optical signal through an optical transmission line; a receiver that receives, in response to the transmission of the first optical signal, a second optical signal from the line, and measures the reception level of the second optical signal; and a control unit that specifies a section where the second optical signal corresponding to the first optical signal was generated, calculates an optical level corresponding to a loss in said section on the basis of the reception level, determines that a first fault has occurred in the section when the optical level in the section has changed from a first reference level by a first threshold or more, sets a second reference level and a second threshold after occurrence of the first fault, and determines occurrence of a second fault."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Fault detection apparatus, fault detection method, and submarine cable system","description":"A fault detection apparatus includes: a transmitter that transmits a first optical signal through an optical transmission line; a receiver that receives, in response to the transmission of the first o","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11936423","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-11936423","citation_suggestion":"Patentable. \"Fault detection apparatus, fault detection method, and submarine cable system\" (US-11936423). https://patentable.app/patents/US-11936423","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11936423","json":"https://patentable.app/api/llm-context/US-11936423","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T06:07:31.586Z"}