{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8471687","patent":{"patent_number":"US-8471687","title":"Method and apparatus for communicating message signals in a load control system","assignee":null,"inventors":[],"filing_date":"2011-10-11T00:00:00.000Z","publication_date":"2013-06-25T00:00:00.000Z","cpc_codes":["H04L","H04B","H04L","H04L","H04L","H04B","H04B","H04B","H04L"],"num_claims":20,"abstract":"A system for independent control of electric motors and electric lights includes a plurality of two-wire wallstations coupled in series via power wires between an alternating-current (AC) source and a light/motor control unit. The light/motor control unit is preferably located in the same enclosure as an electric motor and an electric light and has two outputs for independent control of the motor and the light. The light/motor control unit and the wallstations each include a controller and a communication circuit that is coupled to the power wiring via a communication transformer and communicate with each other using a loop current carrier technique. The light/motor control unit and the wallstations utilize pseudo random orthogonal codes and a median filter in the communication process."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for communicating message signals in a load control system","description":"A system for independent control of electric motors and electric lights includes a plurality of two-wire wallstations coupled in series via power wires between an alternating-current (AC) source and a","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8471687","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-8471687","citation_suggestion":"Patentable. \"Method and apparatus for communicating message signals in a load control system\" (US-8471687). https://patentable.app/patents/US-8471687","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8471687","json":"https://patentable.app/api/llm-context/US-8471687","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T20:57:03.116Z"}