{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8483563","patent":{"patent_number":"US-8483563","title":"Header error control protected ten gigabit passive optical network downstream frame synchronization pattern","assignee":null,"inventors":[],"filing_date":"2010-09-17T00:00:00.000Z","publication_date":"2013-07-09T00:00:00.000Z","cpc_codes":["H04B","H04J","H04L","H04L","H04L","H04Q","H04L","H04Q"],"num_claims":18,"abstract":"An apparatus comprising an optical line terminal (OLT) configured to couple to a plurality of optical network units (ONUs) and transmit a plurality of downstream frames to the ONUs, wherein each of the downstream frames comprises a plurality of forward error correction (FEC) codewords and a plurality of additional non-FEC encoded bytes that comprise synchronization information that is protected by Header Error Control (HEC) code. An apparatus comprising a processing unit configured to arrange control data, user data, or both into a plurality of FEC codewords in a downstream frame and arrange a physical synchronization sequence (PSync), a superframe structure, and a Passive Optical Network-identifier (PON-ID) structure in a plurality of additional non-FEC encoded bytes in the downstream frame, and a transmission unit configured to transmit the FEC codewords and the additional non-FEC encoded bytes in the downstream frame within a 125 microsecond window."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Header error control protected ten gigabit passive optical network downstream frame synchronization pattern","description":"An apparatus comprising an optical line terminal (OLT) configured to couple to a plurality of optical network units (ONUs) and transmit a plurality of downstream frames to the ONUs, wherein each of th","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8483563","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-8483563","citation_suggestion":"Patentable. \"Header error control protected ten gigabit passive optical network downstream frame synchronization pattern\" (US-8483563). https://patentable.app/patents/US-8483563","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8483563","json":"https://patentable.app/api/llm-context/US-8483563","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T07:45:26.526Z"}