{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9729838","patent":{"patent_number":"US-9729838","title":"Discharge lamp driver, light source, projector, and method of driving discharge lamp","assignee":null,"inventors":[],"filing_date":"2014-05-20T00:00:00.000Z","publication_date":"2017-08-08T00:00:00.000Z","cpc_codes":["H04N"],"num_claims":19,"abstract":"A discharge lamp driver includes a discharge lamp drive unit that supplies a drive current to the discharge lamp, and a control unit that controls the discharge lamp drive unit according to a drive current waveform, wherein the drive current waveform has a mixed frequency drive period including a unit drive period containing a first drive period in which a first drive current is supplied to the discharge lamp and a second drive period provided immediately after the first drive period, in which a second drive current is supplied to the discharge lamp, the first drive current is a half-period alternating current having a frequency higher than 10 Hz and not higher than 300 Hz, the second drive current is an alternating current having a frequency higher than 1000 Hz, and a length of the second drive period is equal to or longer than a length of the first drive period."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Discharge lamp driver, light source, projector, and method of driving discharge lamp","description":"A discharge lamp driver includes a discharge lamp drive unit that supplies a drive current to the discharge lamp, and a control unit that controls the discharge lamp drive unit according to a drive cu","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9729838","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-9729838","citation_suggestion":"Patentable. \"Discharge lamp driver, light source, projector, and method of driving discharge lamp\" (US-9729838). https://patentable.app/patents/US-9729838","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9729838","json":"https://patentable.app/api/llm-context/US-9729838","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:41:04.572Z"}