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. 05, 1998
Filed:
Jun. 05, 1995
Richard L Hicksted, Incline Village, NV (US);
Michael Glaser, Plettenberg, DE;
MTI Technology Corporation, Anaheim, CA (US);
Abstract
A disk drive in a computer system is equipped with a power storage unit that supplies power to the drive controller when there is a system power interruption, such as a powerdown or a power failure. Once the controller is notified that system power has been interrupted, it will immediately initiate a seek to a reserved location in the disk drive and store the contents of the cache memory at the reserved location. After power has been restored to the system, the controller can load the contents of the reserved cylinders back to the cache memory and complete the pending write operations by writing all of the data items in the cache to their respective final locations in the drive. The present invention has the advantage of requiring a very small amount of power to operate the controller beyond the interruption of system power, since it takes much less power to complete only one write operation of the cache contents to the reserved location, rather than completing the plurality of pending write operations for all the data items in the cache to locations scattered throughout the disk drive.