{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8521751","patent":{"patent_number":"US-8521751","title":"Search device, a search method and a program","assignee":null,"inventors":[],"filing_date":"2009-08-21T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["G06F","G06F"],"num_claims":8,"abstract":"A search device, a search method and a program, are provided, which improve the search speed in a longest prefix or suffix match search. At the time of registration, the search device stores an inputted registered pattern, generates one or more set of a first character string which has a length of a multiple of a predetermined number of characters and a remaining second character string by dividing the registered pattern into two, obtains a plurality of hash values by applying a plurality of hash functions to the first character string, and updates the contents which the plurality of hash values indicate. The search device extracts a partial character string of the length which is equal to the estimated length from the search key and determines whether the partial character string which is extracted is registered."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Search device, a search method and a program","description":"A search device, a search method and a program, are provided, which improve the search speed in a longest prefix or suffix match search. At the time of registration, the search device stores an inputt","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8521751","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-8521751","citation_suggestion":"Patentable. \"Search device, a search method and a program\" (US-8521751). https://patentable.app/patents/US-8521751","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8521751","json":"https://patentable.app/api/llm-context/US-8521751","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T05:03:13.452Z"}