{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11233582","patent":{"patent_number":"US-11233582","title":"Local tone generation","assignee":null,"inventors":[],"filing_date":"2016-03-25T00:00:00.000Z","publication_date":"2022-01-25T00:00:00.000Z","cpc_codes":["H04B","H04L","H04L","H04R","H04R"],"num_claims":10,"abstract":"A mobile device that generates and transmits a human-inaudible acoustic signal, which encodes a symbol sequence representing a binary message, for delivery as audio content, is disclosed. The mobile device encodes the binary message into a sequence of symbols that are each associated with frequency characteristics and generates and transmits the human-inaudible acoustic signal, based on the frequency characteristics of the symbols. A further mobile device that receives and decodes a human-inaudible acoustic signal, which encodes a symbol sequence representing a binary message, embedded within audio content, is disclosed. The mobile device repeatedly performs a frequency domain transformation of samples of the signal to generate a symbol sequence, and performs error correction decoding upon the symbol sequence to determine the validity of the symbol sequence. The mobile device then transmits the symbol sequence as the decoded equivalent of the human-inaudible acoustic signal, once a valid symbol sequence has been identified."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Local tone generation","description":"A mobile device that generates and transmits a human-inaudible acoustic signal, which encodes a symbol sequence representing a binary message, for delivery as audio content, is disclosed. The mobile d","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11233582","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-11233582","citation_suggestion":"Patentable. \"Local tone generation\" (US-11233582). https://patentable.app/patents/US-11233582","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11233582","json":"https://patentable.app/api/llm-context/US-11233582","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T16:50:35.539Z"}