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:
Nov. 17, 2009
Filed:
Jan. 23, 2007
Kazunari Sugiyama, Kawasaki, JP;
Tadataka Matsubayashi, Machida, JP;
Katsushi Yako, Yokohama, JP;
Yasufumi Sato, Funabashi, JP;
Jugo Noda, Ikeda, JP;
Nobuo Kawamura, Atsugi, JP;
Kazunari Sugiyama, Kawasaki, JP;
Tadataka Matsubayashi, Machida, JP;
Katsushi Yako, Yokohama, JP;
Yasufumi Sato, Funabashi, JP;
Jugo Noda, Ikeda, JP;
Nobuo Kawamura, Atsugi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention realize a high speed retrieval performance in a document retrieval system referring to partial data of documents including structured data such as XML documents and electric mails, without providing further memory. The present invention includes storage means for storing documents to be retrieved onto a disk device, a calculation means for calculating an allocated capacity of the memory, and storage means for saving, onto the memory, partial data of the documents stored on the disk device by the calculated allocated capacity of the memory. The present invention also includes a first retrieval means for retrieving partial data stored on the memory, determining means for determining whether or not to retrieve the documents stored on the disk device based on the result from the first retrieval, and a second means for retrieving the documents stored on the disk device based on the result from the above determination.