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:
Jan. 09, 2007
Filed:
Feb. 25, 1999
Applicants:
Ravishanker Krishnamoorthy, Singapore, SG;
Hin Sing Fong, Singapore, SG;
Inventors:
Ravishanker Krishnamoorthy, Singapore, SG;
Hin Sing Fong, Singapore, SG;
Assignee:
STMicroelectronics Asia Pacific (PTE) Ltd., Singapore, SG;
Primary Examiner:
Int. Cl.
CPC ...
G11B 15/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for controlling a motorized data-storage device, including extracting energy from a spindle motor to drive a positioning motor of the data-storage device and other components, such as circuitry. In normal operation of one embodiment, a disk is rotated at a constant velocity by a spindle motor and a read/write head is moved over the disk surface by a voice-coil motor. In the event of a power failure, energy is extracted from the spindle motor to drive the voice-coil motor so the head can be safely moved away from the disk.