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. 13, 2004
Filed:
Oct. 27, 2000
Hideo Asano, Machida, JP;
Atsushi Kanamaru, Sagamihara, JP;
Kelvin Kao, San Jose, CA (US);
Akira Kibashi, Zama, JP;
Koichi Kushida, Fujisawa, JP;
Takahiro Saito, Yokohama, JP;
Chi-Chen Wu, Los Altos, CA (US);
Daniel James Colegrove, Henderson, NV (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An external controller performs a thorough analysis and prediction on true requests from an application to issue a look-ahead request to an HDD or other auxiliary storage. An HDC card is connected to an HDD device which stores data and has a cache memory. The HDC card, which controls the HDD device, includes an access request tracer for tracing a true access request made by an application program executed by a host directly from the application program, a speculation request determination section for determining a speculation request to be expected later based on the traced true access request, and an HDC for issuing the determined speculation request to the HDD device.