{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8489405","patent":{"patent_number":"US-8489405","title":"Compression coding and decoding method, coder, decoder, and coding device","assignee":null,"inventors":[],"filing_date":"2011-12-01T00:00:00.000Z","publication_date":"2013-07-16T00:00:00.000Z","cpc_codes":["G10L"],"num_claims":22,"abstract":"The embodiments of the present invention relate to a compression coding and decoding method, a coder, a decoder and a coding device. The compression coding method includes: extracting sign information of an input signal to obtain an absolute value signal of the input signal; obtaining a residual signal of the absolute value signal by using a prediction coefficient, where the prediction coefficient is obtained by prediction and analysis that are performed according to a signal characteristic of the absolute value signal of the input signal; and multiplexing the residual signal, the sign information and a coding parameter to output a coding code stream, after the residual signal, the sign information and the coding parameter are respectively coded, so as to improve compression efficiency of a voice and audio signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Compression coding and decoding method, coder, decoder, and coding device","description":"The embodiments of the present invention relate to a compression coding and decoding method, a coder, a decoder and a coding device. The compression coding method includes: extracting sign information","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8489405","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-8489405","citation_suggestion":"Patentable. \"Compression coding and decoding method, coder, decoder, and coding device\" (US-8489405). https://patentable.app/patents/US-8489405","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8489405","json":"https://patentable.app/api/llm-context/US-8489405","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T20:31:15.871Z"}