{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8521949","patent":{"patent_number":"US-8521949","title":"Data deleting method and apparatus","assignee":null,"inventors":[],"filing_date":"2012-10-10T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F"],"num_claims":9,"abstract":"A data deleting method and apparatus is provided in embodiments of this application. The method comprises: when a file system detects a delete request for a target file, examining a security property of the target file, wherein the security property of a file comprises secret classified property; if the security property of the target file is secret classified property, executing an overwrite operation on the target file and then executing a delete operation to delete the target file; wherein the overwrite operation comprises sending a write command to a SSD, the write command being a predefined write command which is expanded by adding an immediate scrubbing flag, to cause the SSD to invoke a backstage garbage collection program according to the predefined write command to immediately delete data on garbage blocks corresponding to logical block addresses of the target file."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Data deleting method and apparatus","description":"A data deleting method and apparatus is provided in embodiments of this application. The method comprises: when a file system detects a delete request for a target file, examining a security property ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8521949","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-8521949","citation_suggestion":"Patentable. \"Data deleting method and apparatus\" (US-8521949). https://patentable.app/patents/US-8521949","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8521949","json":"https://patentable.app/api/llm-context/US-8521949","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T15:47:55.027Z"}