{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8514682","patent":{"patent_number":"US-8514682","title":"Reproduction signal evaluation method, reproduction signal evaluation unit, and optical disk device adopting the same","assignee":null,"inventors":[],"filing_date":"2012-03-30T00:00:00.000Z","publication_date":"2013-08-20T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B","G11B"],"num_claims":5,"abstract":"A reproduction signal evaluation method evaluates the quality of a reproduction signal reproduced from an information recording medium based on a binary signal generated from the reproduction signal using a PRML signal processing system. A pattern extraction step extracts, from the binary signal, a specific state transition pattern which has the possibility of causing a bit error; a step computes a differential metric based on the binary signal; an extraction step extracts the differential metric which is not greater than a predetermined signal processing threshold; a step determines a mean value of the differential metrics which are not greater than the signal processing threshold and extracted in the extraction step; a standard deviation computing step determines a standard deviation which corresponds to an error rate predicted from the mean value; and an evaluation step evaluates a quality of the reproduction signal using the standard deviation."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Reproduction signal evaluation method, reproduction signal evaluation unit, and optical disk device adopting the same","description":"A reproduction signal evaluation method evaluates the quality of a reproduction signal reproduced from an information recording medium based on a binary signal generated from the reproduction signal u","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8514682","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-8514682","citation_suggestion":"Patentable. \"Reproduction signal evaluation method, reproduction signal evaluation unit, and optical disk device adopting the same\" (US-8514682). https://patentable.app/patents/US-8514682","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8514682","json":"https://patentable.app/api/llm-context/US-8514682","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T18:48:01.087Z"}