{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10528775","patent":{"patent_number":"US-10528775","title":"Card reader and foreign matter detection method","assignee":null,"inventors":[],"filing_date":"2019-06-06T00:00:00.000Z","publication_date":"2020-01-07T00:00:00.000Z","cpc_codes":["G06K","G06K","G06K","G06K","G06K"],"num_claims":5,"abstract":"A card reader may include a main body part including a card conveyance path; a shutter member structured to move between a closed position and an open position; a first capacitance sensor provided in the main body part; and a control unit. The control unit may be structured to calculate a first output difference between an output of the first capacitance sensor in a first state and an output of the first capacitance sensor in a second state; calculate a second output difference between a maximum output of the first capacitance sensor in a period from the first state to the second state and the output of the first capacitance sensor in the second state; and determine that an object is installed when the first output difference is greater than a predetermined first threshold and the second output difference is less than a predetermined second threshold."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Card reader and foreign matter detection method","description":"A card reader may include a main body part including a card conveyance path; a shutter member structured to move between a closed position and an open position; a first capacitance sensor provided in ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10528775","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-10528775","citation_suggestion":"Patentable. \"Card reader and foreign matter detection method\" (US-10528775). https://patentable.app/patents/US-10528775","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10528775","json":"https://patentable.app/api/llm-context/US-10528775","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T17:19:38.855Z"}