{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8531931","patent":{"patent_number":"US-8531931","title":"Optical disk inspecting apparatus and method","assignee":null,"inventors":[],"filing_date":"2009-10-09T00:00:00.000Z","publication_date":"2013-09-10T00:00:00.000Z","cpc_codes":["G11B","G11B"],"num_claims":9,"abstract":"An optical disk inspecting apparatus 10 plays an optical disk at a high speed and determines, based on error information provided during the high-speed reproduction, whether or not errors of a number exceeding a first threshold value have occurred. Then, when it is determined that errors of a number exceeding a first threshold value have occurred, the optical disk inspecting apparatus 10 performs high-speed principal determination of executing high-speed reproduction in this segment and determining presence or absence of errors of a number exceeding a second threshold value and also performs low-speed principal determination of executing low-speed reproduction in this segment and determining presence or absence of errors of a number exceeding the second threshold value. When errors of a number exceeding the second threshold value are detected, it is determined that there is a defect, and NG is outputted."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical disk inspecting apparatus and method","description":"An optical disk inspecting apparatus 10 plays an optical disk at a high speed and determines, based on error information provided during the high-speed reproduction, whether or not errors of a number ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8531931","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-8531931","citation_suggestion":"Patentable. \"Optical disk inspecting apparatus and method\" (US-8531931). https://patentable.app/patents/US-8531931","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8531931","json":"https://patentable.app/api/llm-context/US-8531931","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T13:24:34.209Z"}