The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 2016
Filed:
Dec. 01, 2011
Yasuhiro Fujii, Tokyo, JP;
Susumu Serita, Tokyo, JP;
Yasuhiro Fujii, Tokyo, JP;
Susumu Serita, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In search that uses searchable code, the search query and the secure index is collated in round-robins fashion, registering the required secure index and a characteristic quantity of deposited data in a database server to realize the searchable code. The server uses the characteristic quantity to perform clustering on the secure index. For search, collation is first performed only for representative data of a cluster. For a hit, the collation priority is raised for all the data included in the cluster. When there is no hit, the priority is lowered. After calculating the priority, collation is performed sequentially for all the data on the basis of the priority.