{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9768908","patent":{"patent_number":"US-9768908","title":"Protection method and optical communication system","assignee":null,"inventors":[],"filing_date":"2014-10-22T00:00:00.000Z","publication_date":"2017-09-19T00:00:00.000Z","cpc_codes":["H04J","H04J","H04J","H04Q","H04Q","H04Q","H04Q","H04Q","H04Q"],"num_claims":14,"abstract":"A protection method wherein an ONU switches a reception wavelength to a backup wavelength so as to be logically connected to a backup OSU designated in advance for each ONU when the ONU detects a failure in an OSU to which the ONU is originally assigned, while the ONU keeps on holding its own connection information with the OLT. In the OLT, a backup OSU for the ONU which is originally assigned to the failed OSU is notified of the information on the ONU when the OLT detects a failure in an OSU. In this way, the ONUs which are originally assigned to the failed OSU resumes communication in a short period."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Protection method and optical communication system","description":"A protection method wherein an ONU switches a reception wavelength to a backup wavelength so as to be logically connected to a backup OSU designated in advance for each ONU when the ONU detects a fail","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9768908","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-9768908","citation_suggestion":"Patentable. \"Protection method and optical communication system\" (US-9768908). https://patentable.app/patents/US-9768908","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9768908","json":"https://patentable.app/api/llm-context/US-9768908","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T19:49:32.125Z"}