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. 13, 2009
Filed:
Sep. 01, 2004
Bart Michiel DE Boer, Eindhoven, NL;
Bart Michiel De Boer, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A motor power controller for a disk drive includes at least two operation states. In a first operation state, the disk drive motor is running continuously, and in a second operation state, the motor is spun up at the beginning of each data operation and spun down at the end of each data operation. The motor power controller transitions the disk drive from the first to the second operation state when a time interval is longer than a predetermined period of time without any data requests is determined. Further, the motor power controller transitions the disk drive from the second to the first operation state when a predetermined number of time intervals between consecutive data requests are all smaller than the predetermined period of time.