{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10530489","patent":{"patent_number":"US-10530489","title":"Optical signal reception apparatus, optical communication system, and method of generating compensation signal of optical signal reception apparatus","assignee":null,"inventors":[],"filing_date":"2017-02-27T00:00:00.000Z","publication_date":"2020-01-07T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04B","H04B","H04B","H04J","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L"],"num_claims":9,"abstract":"A frequency difference compensation unit (510) generates a carrier recovery signal by compensating for a frequency difference between a local light beam and an optical signal in a plurality of digital signals. A first symbol determination unit (521) determines the symbol position of the carrier recovery signal in which a frequency difference is compensated for, in accordance with the signal arrangement of multi-value modulation. A second symbol determination unit (522) determines the symbol position of the carrier recovery signal in which a frequency difference is compensated for, in accordance with a signal arrangement in which the number of multi-values of the multi-value modulation is reduced. A loop filter unit (540) and a compensation signal generation unit (550) temporarily generates a compensation signal using a determination result of the second symbol determination unit (522), and then regularly generates the compensation signal using a determination result of the first symbol determination unit (521)."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical signal reception apparatus, optical communication system, and method of generating compensation signal of optical signal reception apparatus","description":"A frequency difference compensation unit (510) generates a carrier recovery signal by compensating for a frequency difference between a local light beam and an optical signal in a plurality of digital","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10530489","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-10530489","citation_suggestion":"Patentable. \"Optical signal reception apparatus, optical communication system, and method of generating compensation signal of optical signal reception apparatus\" (US-10530489). https://patentable.app/patents/US-10530489","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10530489","json":"https://patentable.app/api/llm-context/US-10530489","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T21:45:56.802Z"}