{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9628906","patent":{"patent_number":"US-9628906","title":"Method and electrical interface circuit enabling multiplexing","assignee":null,"inventors":[],"filing_date":"2012-02-09T00:00:00.000Z","publication_date":"2017-04-18T00:00:00.000Z","cpc_codes":["H04R","H02J","H02J","H04R"],"num_claims":20,"abstract":"An electrical interface circuit includes a microphone circuit, a battery charger circuit and an electrical connector for connecting the electrical interface circuit to an external device. The electrical connector has a pin on which signals are multiplexed for connecting either the battery charger circuit to an external supply voltage, or the microphone circuit to an external microphone. The battery charger circuit includes an amplifying circuit for controlling voltage or current to a battery at battery charging, and a p-type power transistor. The pin is connected to the microphone circuit and to a source of the p-type power transistor. When a voltage applied to the pin exceeds the battery voltage, the p-type power transistor provides current from the pin to the charger circuit, and, otherwise, the charger circuit and battery are disconnected from the pin. A method of multiplexing signals on the electrical interface circuit is also disclosed."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and electrical interface circuit enabling multiplexing","description":"An electrical interface circuit includes a microphone circuit, a battery charger circuit and an electrical connector for connecting the electrical interface circuit to an external device. The electric","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9628906","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-9628906","citation_suggestion":"Patentable. \"Method and electrical interface circuit enabling multiplexing\" (US-9628906). https://patentable.app/patents/US-9628906","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9628906","json":"https://patentable.app/api/llm-context/US-9628906","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:14:24.475Z"}