{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8519641","patent":{"patent_number":"US-8519641","title":"Apparatus for driving light emitting device with over-current and over-voltage protection","assignee":null,"inventors":[],"filing_date":"2010-12-08T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["G09G","G09G"],"num_claims":9,"abstract":"An apparatus for driving a light emitting part includes a DC/DC converter for supplying an amplified driving voltage to the light emitting part; a constant current circuit for controlling a current flowing through the light emitting part; a converter controller for controlling the DC/DC converter and the constant current circuit; a current sensor for sensing and converting a current flowing to an anode of the light emitting part into a voltage; a feedback controller for controlling a feedback current according to a magnitude of the voltage from the current sensor; an optical coupling part for performing optical coupling to transmit the feedback current as a feedback voltage; and a main controller for determining whether an over-current is occurring according to a magnitude of the feedback voltage and stopping an operation of the converter controller when the over-current is occurring."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus for driving light emitting device with over-current and over-voltage protection","description":"An apparatus for driving a light emitting part includes a DC/DC converter for supplying an amplified driving voltage to the light emitting part; a constant current circuit for controlling a current fl","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8519641","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-8519641","citation_suggestion":"Patentable. \"Apparatus for driving light emitting device with over-current and over-voltage protection\" (US-8519641). https://patentable.app/patents/US-8519641","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8519641","json":"https://patentable.app/api/llm-context/US-8519641","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:33:48.929Z"}