{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9628928","patent":{"patent_number":"US-9628928","title":"Speaker control device","assignee":null,"inventors":[],"filing_date":"2015-10-29T00:00:00.000Z","publication_date":"2017-04-18T00:00:00.000Z","cpc_codes":["H04R","H04R","H04R"],"num_claims":17,"abstract":"A speaker control device in one embodiment includes a time to digital converter connected to a drive power source in series with a drive circuit for driving a plurality of coils of a speaker, the converter outputting a digital data in accordance with a voltage of the drive power source, and a monitor circuit detecting a state of the plurality of coils of the speaker based on digital data output by the time to digital converter."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Speaker control device","description":"A speaker control device in one embodiment includes a time to digital converter connected to a drive power source in series with a drive circuit for driving a plurality of coils of a speaker, the conv","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9628928","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-9628928","citation_suggestion":"Patentable. \"Speaker control device\" (US-9628928). https://patentable.app/patents/US-9628928","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9628928","json":"https://patentable.app/api/llm-context/US-9628928","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:17:06.841Z"}