{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9825783","patent":{"patent_number":"US-9825783","title":"Method and circuit for estimating channel state and associated receiver","assignee":null,"inventors":[],"filing_date":"2017-03-15T00:00:00.000Z","publication_date":"2017-11-21T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L"],"num_claims":21,"abstract":"A method for estimating a channel state of an audio/video signal includes: estimating a first response and a second response according to the audio/video signal, wherein the first response corresponds to an echo path and the second response corresponds to a reference path; calculating a plurality of phase differences at a plurality of time points between the first response and the second response; determining whether the echo path is a Doppler path according to the phase differences; and when it is determined that the echo path is the Doppler path, calculating a phase rotation frequency of the Doppler path according to a difference between at least two of the phase differences."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and circuit for estimating channel state and associated receiver","description":"A method for estimating a channel state of an audio/video signal includes: estimating a first response and a second response according to the audio/video signal, wherein the first response corresponds","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9825783","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-9825783","citation_suggestion":"Patentable. \"Method and circuit for estimating channel state and associated receiver\" (US-9825783). https://patentable.app/patents/US-9825783","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9825783","json":"https://patentable.app/api/llm-context/US-9825783","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:40:08.175Z"}