{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9761075","patent":{"patent_number":"US-9761075","title":"Smart key system","assignee":null,"inventors":[],"filing_date":"2016-08-05T00:00:00.000Z","publication_date":"2017-09-12T00:00:00.000Z","cpc_codes":["G07C","G07C","G07C"],"num_claims":2,"abstract":"A smart key system to prevent theft of a vehicle by a relay attack while securing communication performance under a noisy environment, includes an in-vehicle device that measures noise in a radio wave band of a response signal to be wirelessly transmitted by a mobile device; sets a transmission strength of the response signal greater while the noise becomes greater, within a predetermined strength; wirelessly transmits a request signal including a command about the transmission strength into a predetermined area; receives the response signal; and authenticates the mobile device, by first information preregistered for the mobile device, and second information included in the response signal. The mobile device receives the request signal; sets the transmission strength of the response signal, based on the command in the request signal; and wirelessly transmits the response signal including the second information by the set transmission strength when receiving the request signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Smart key system","description":"A smart key system to prevent theft of a vehicle by a relay attack while securing communication performance under a noisy environment, includes an in-vehicle device that measures noise in a radio wave","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9761075","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-9761075","citation_suggestion":"Patentable. \"Smart key system\" (US-9761075). https://patentable.app/patents/US-9761075","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9761075","json":"https://patentable.app/api/llm-context/US-9761075","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:38:30.231Z"}