{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11250004","patent":{"patent_number":"US-11250004","title":"Secure equijoin system, secure equijoin device, secure equijoin method, and program","assignee":null,"inventors":[],"filing_date":"2017-09-14T00:00:00.000Z","publication_date":"2022-02-15T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","H04L","H04L","H04L","H04L"],"num_claims":8,"abstract":"A secure equijoin technique of generating one table from two tables while curbing the volume of communications traffic is provided. The technique includes: a first permutation generating means 110 that generates a permutation <σ> from an element sequence which is generated from the first column of a table L and the first column of a table R; a first column generating means 120 that generates, for j=2, . . . , a, by using the permutation <σ>, a prefix sum, and an inverse permutation <σ−1>, the j-th column of a table J from an element sequence which is generated from the to j-th column of the table L; a join-result element sequence generating means 130 that generates a join-result element sequence from an element sequence ([[1]], . . . , [[1]], [[0]], . . . , [[0]], [[−1]], . . . , [[−1]]) by using the permutation <σ>, the prefix sum, and the inverse permutation <σ−1>; a second column generating means 140 that generates, for j=a+1, . . . , a+b−1, the j-th column of the table J by using the join-result element sequence and the j−a+1-th column of the table R; and a third column generating means 150 that generates the first column of the table J by using the join-result element sequence and the first column of the table R."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Secure equijoin system, secure equijoin device, secure equijoin method, and program","description":"A secure equijoin technique of generating one table from two tables while curbing the volume of communications traffic is provided. The technique includes: a first permutation generating means 110 tha","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11250004","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-11250004","citation_suggestion":"Patentable. \"Secure equijoin system, secure equijoin device, secure equijoin method, and program\" (US-11250004). https://patentable.app/patents/US-11250004","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11250004","json":"https://patentable.app/api/llm-context/US-11250004","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T19:50:09.329Z"}