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:
Jul. 18, 2006
Filed:
Sep. 10, 2001
Applicants:
Charles R. Watt, Longmont, CO (US);
Christopher J. Turner, Niwot, CO (US);
Inventors:
Charles R. Watt, Longmont, CO (US);
Christopher J. Turner, Niwot, CO (US);
Assignee:
DPHI Acquisitions, Inc., Boulder, CO (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B 15/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system and method for controlling operation of a motor system that addresses the design challenges for the small form factor optical disk system. The present invention includes starting the operation of a motor including windings and a rotor; placing the motor in a first operational state; driving the motor from the first operational state to a second operational state; and sensing a variation in an electrical waveform induced by driving of the motor to determine a cycle period from which the speed of the motor can be determined.