{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9728025","patent":{"patent_number":"US-9728025","title":"Portable device, communication device, and communication system","assignee":null,"inventors":[],"filing_date":"2015-10-23T00:00:00.000Z","publication_date":"2017-08-08T00:00:00.000Z","cpc_codes":["G07C","G07C","G07C"],"num_claims":10,"abstract":"A communication system includes: a vehicle-mounted communication device and a portable device. The communication device includes: a vehicle transmission unit which transmits a plurality of first signals to the portable device, and a vehicle reception unit which receives a second signal transmitted from the portable device. The portable device includes: a portable device reception unit which receives the first signals, a portable device controller which detects signal intensities of the received first signals, and which compares the signal intensities of the first signals, and a portable device transmission unit which transmits the second signal according to control of the portable device controller. The portable device controller sets an output value of the second signal to a predetermined value when a difference between the compared signal intensities of the first signals is equal to or less than a threshold."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Portable device, communication device, and communication system","description":"A communication system includes: a vehicle-mounted communication device and a portable device. The communication device includes: a vehicle transmission unit which transmits a plurality of first signa","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9728025","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-9728025","citation_suggestion":"Patentable. \"Portable device, communication device, and communication system\" (US-9728025). https://patentable.app/patents/US-9728025","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9728025","json":"https://patentable.app/api/llm-context/US-9728025","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:21:19.342Z"}