{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8531271","patent":{"patent_number":"US-8531271","title":"RFID carrier sensing method and RFID system using this RFID carrier sensing method","assignee":null,"inventors":[],"filing_date":"2007-07-27T00:00:00.000Z","publication_date":"2013-09-10T00:00:00.000Z","cpc_codes":["G06K","G06K","H04B"],"num_claims":4,"abstract":"An RFID system that is capable of increasing the probability of a spare channel being detected and reducing the influence of interference between reader/writers comprises: a reader/writer which has a reader/writer main body section and an antenna capable of polarization switching, and which sends a continuous carrier wave; and a tag which uses tag information to modulate the continuous carrier wave and sends back a response signal to the reader/writer. The reader/writer main body section judges the level of a received interference signal and determines a channel and polarization direction for which the level of the interference signal is equal to or less than a threshold value, and receives a response signal from the tag on the determined channel and in the polarization direction."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"RFID carrier sensing method and RFID system using this RFID carrier sensing method","description":"An RFID system that is capable of increasing the probability of a spare channel being detected and reducing the influence of interference between reader/writers comprises: a reader/writer which has a ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8531271","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-8531271","citation_suggestion":"Patentable. \"RFID carrier sensing method and RFID system using this RFID carrier sensing method\" (US-8531271). https://patentable.app/patents/US-8531271","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8531271","json":"https://patentable.app/api/llm-context/US-8531271","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:37:51.078Z"}