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:
May. 20, 2014
Filed:
Mar. 28, 2012
Applicants:
Jang Woo Park, Seoul, KR;
Sang-won Lee, Suwon-si, KR;
Inventors:
Jang Woo Park, Seoul, KR;
Sang-Won Lee, Suwon-si, KR;
Assignee:
Altibase Corp., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/12 (2006.01); G06F 12/02 (2006.01); G06F 9/34 (2006.01);
U.S. Cl.
CPC ...
G06F 12/123 (2013.01); G06F 12/0246 (2013.01); G06F 9/342 (2013.01);
Abstract
A method and apparatus manages a buffer cache. An extended buffer is used to perform a page replacement algorithm using reference time information regarding a time at which a page is referred. Pages replaced through the page replacement algorithm, when re-referred to, may be retrieved from the extended buffer, instead of a hard disk. As a result, write/read operations with respect to the disk are made efficient and the page input/output speed is increased.