{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-12002495","patent":{"patent_number":"US-12002495","title":"Magnetic disk device and method of adjusting preheat time","assignee":null,"inventors":[],"filing_date":"2023-03-09T00:00:00.000Z","publication_date":"2024-06-04T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B","G11B"],"num_claims":4,"abstract":"According to one embodiment, a magnetic disk device includes magnetic disks, a plurality of magnetic heads, and a control unit. A plurality of magnetic heads each includes a heat-assist unit which applies a preheating current of such magnitude that data already written to the magnetic disk is not erased to a near-field optical element for the preheat time. The control unit measures the time elapsing from a start of write to the time when a value of an index indicating the quality of a recording signal of data written by the magnetic head converges to within a first threshold range, and adjusts the preheat time for each of the magnetic heads in such a manner that the measured lapse time becomes less than or equal to a second threshold."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Magnetic disk device and method of adjusting preheat time","description":"According to one embodiment, a magnetic disk device includes magnetic disks, a plurality of magnetic heads, and a control unit. A plurality of magnetic heads each includes a heat-assist unit which app","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-12002495","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-12002495","citation_suggestion":"Patentable. \"Magnetic disk device and method of adjusting preheat time\" (US-12002495). https://patentable.app/patents/US-12002495","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-12002495","json":"https://patentable.app/api/llm-context/US-12002495","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T04:47:38.723Z"}