{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8508456","patent":{"patent_number":"US-8508456","title":"LCD controller and LCD control method","assignee":null,"inventors":[],"filing_date":"2012-06-15T00:00:00.000Z","publication_date":"2013-08-13T00:00:00.000Z","cpc_codes":["G09G","G06F","G06F","G06F","G09G"],"num_claims":12,"abstract":"A liquid crystal display (LCD) controller includes a plurality of segment/key source control circuits connected with an LCD panel and a key matrix through a plurality of segment/key source terminals, to periodically output a signal for one frame which contains a display output period and a key source output period. The plurality of segment/key source control circuits output segment signals having display drive voltages indicating a maximum value, a minimum value, and intermediate values between the maximum value and the minimum value. The plurality of segment/key source control circuits output first key scan pulse signals varying between maximum and minimum values to the plurality of segment/key source terminals during the key source output period in a key scan state when the key matrix has been operated, and then, second key scan pulse signals obtained by inverting the first key scan pulse signals to the corresponding segment/key source terminal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"LCD controller and LCD control method","description":"A liquid crystal display (LCD) controller includes a plurality of segment/key source control circuits connected with an LCD panel and a key matrix through a plurality of segment/key source terminals, ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8508456","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-8508456","citation_suggestion":"Patentable. \"LCD controller and LCD control method\" (US-8508456). https://patentable.app/patents/US-8508456","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8508456","json":"https://patentable.app/api/llm-context/US-8508456","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T15:35:01.505Z"}