{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8477576","patent":{"patent_number":"US-8477576","title":"Optical disc apparatus","assignee":null,"inventors":[],"filing_date":"2012-03-26T00:00:00.000Z","publication_date":"2013-07-02T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B","G11B"],"num_claims":8,"abstract":"An optical disc apparatus, for recording or reproducing information by irradiating a laser beam on an optical disc. More particularly, the present application relates to an optical pickup of the optical disc apparatus that produces a tracking error signal, in general, and the optical disc apparatus executes a tracking servo with using the tracking error signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical disc apparatus","description":"An optical disc apparatus, for recording or reproducing information by irradiating a laser beam on an optical disc. More particularly, the present application relates to an optical pickup of the optic","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8477576","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-8477576","citation_suggestion":"Patentable. \"Optical disc apparatus\" (US-8477576). https://patentable.app/patents/US-8477576","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8477576","json":"https://patentable.app/api/llm-context/US-8477576","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T20:57:32.023Z"}