{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9767844","patent":{"patent_number":"US-9767844","title":"Information recording method and information recording apparatus including switching of recording layer in shortage of free space","assignee":null,"inventors":[],"filing_date":"2016-11-21T00:00:00.000Z","publication_date":"2017-09-19T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B"],"num_claims":8,"abstract":"An information recording method of recording information is provided in an information recording medium having a plurality of recording layers including a first recording layer and a second recording layer located to be closer to a surface than the first recording layer, each of the plurality of recording layers includes a user data area for recording user data, a spare area for alternatively recording data of failed recording into the user data area, and a management information area for recording management information. The first recording layer is used as a recording object layer at start of recording. When any one of the user data area, the spare area, and the management information area of the first recording layer runs short of a free space, then the recording object layer of the user data area, the spare area, and the management information area is switched over to the second recording layer."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Information recording method and information recording apparatus including switching of recording layer in shortage of free space","description":"An information recording method of recording information is provided in an information recording medium having a plurality of recording layers including a first recording layer and a second recording ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9767844","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-9767844","citation_suggestion":"Patentable. \"Information recording method and information recording apparatus including switching of recording layer in shortage of free space\" (US-9767844). https://patentable.app/patents/US-9767844","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9767844","json":"https://patentable.app/api/llm-context/US-9767844","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:22:23.297Z"}