{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9787518","patent":{"patent_number":"US-9787518","title":"Digital modulation method and apparatus","assignee":null,"inventors":[],"filing_date":"2017-02-17T00:00:00.000Z","publication_date":"2017-10-10T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L"],"num_claims":21,"abstract":"Disclosed are a digital modulation method and apparatus. The digital modulation method includes: determining to-be-moved constellation points in a rectangular constellation diagram, where constellation points in the rectangular constellation diagram are distributed at corresponding coordinate points in a plane rectangular coordinate system, the to-be-moved constellation points include S columns of constellation points, in four quadrants of the plane rectangular coordinate system, and the rectangular constellation diagram is a constellation diagram generated by performing quadrature amplitude modulation (QAM) on a data bit stream; dividing to-be-moved constellation points in each of the four quadrants into two constellation point sets according to a bisector of an area between a horizontal coordinate axis and a straight line corresponding to a maximum absolute value of vertical coordinates in the rectangular constellation diagram; and horizontally moving and vertically moving each constellation point set in the four quadrants, to obtain a cross-shaped constellation diagram."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Digital modulation method and apparatus","description":"Disclosed are a digital modulation method and apparatus. The digital modulation method includes: determining to-be-moved constellation points in a rectangular constellation diagram, where constellatio","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9787518","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-9787518","citation_suggestion":"Patentable. \"Digital modulation method and apparatus\" (US-9787518). https://patentable.app/patents/US-9787518","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9787518","json":"https://patentable.app/api/llm-context/US-9787518","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:19:41.927Z"}