{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9674625","patent":{"patent_number":"US-9674625","title":"Passive proximity detection","assignee":null,"inventors":[],"filing_date":"2015-04-13T00:00:00.000Z","publication_date":"2017-06-06T00:00:00.000Z","cpc_codes":["H04R","G01S","G01S","G01S"],"num_claims":20,"abstract":"Techniques and devices are disclosed for utilizing passively received audio signals to determine proximity of devices to other objects. In one embodiment, a method of passive proximity detection is provided that includes sensing a first sound wave using a first audio transducer and generating a first signal representative of the first sound wave. A second sound wave is also sensed and a second signal is generated. The method includes comparing characteristics of the first and second signals using a processor to determine if differences between the first and second signals indicate the first audio transducer is proximately located to another object."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Passive proximity detection","description":"Techniques and devices are disclosed for utilizing passively received audio signals to determine proximity of devices to other objects. In one embodiment, a method of passive proximity detection is pr","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9674625","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-9674625","citation_suggestion":"Patentable. \"Passive proximity detection\" (US-9674625). https://patentable.app/patents/US-9674625","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9674625","json":"https://patentable.app/api/llm-context/US-9674625","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:24:27.735Z"}