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:
Oct. 18, 2005
Filed:
May. 10, 2002
Edwin S. Olds, Norman, OK (US);
Jack A. Mobley, Oklahoma City, OK (US);
Mark D. Hertz, Oklahoma City, OK (US);
Kenny T. Coker, Mustang, OK (US);
Edwin S. Olds, Norman, OK (US);
Jack A. Mobley, Oklahoma City, OK (US);
Mark D. Hertz, Oklahoma City, OK (US);
Kenny T. Coker, Mustang, OK (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
Method and apparatus for transferring data between a host device and a data storage device having a first memory space and a second memory space. The host issues access commands to store and retrieve data. The device stores commands in the first memory space pending transfer to the second memory space. An interface circuit evaluates relative proximity of first and second sets of LBAs associated with pending first and second commands, and delays promotion of later pending commands in front of earlier pending commands during an overlap condition. If the overlap is caused by performance enhancing features (PEF) the PEFs are disabled so the commands can be scheduled for disc access. Indicators are set in the commands to signal that a PEF has caused the overlap and that PEF can be disabled. Values are added to indicators in the commands such that the PEFs can be modified and avoid overlaps.