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. 20, 2004
Filed:
Oct. 13, 1999
Louise Ann Marier, Byron, MN (US);
Brian Lee Morger, Chatfield, MN (US);
Christopher David Wiederholt, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A data storage device and method for improving the performance of data storage devices examines a command queue and performs data transfers to memory within the device before prior commands have completed. A process running in the idle loop of the controller in the storage device checks the queue for write requests and if a cache space within a dual-port cache to hold the transfer data is available, the data transfer portion of the transfer is completed, while the device is still waiting for completion of prior commands in the queue, and data transfers are completing from the cache to the physical media for the prior command.