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. 24, 2012
Filed:
Mar. 24, 2010
Masaki Yamashita, Niiza, JP;
Chisako Ota, Nerima-ku, JP;
Masaki Yamashita, Niiza, JP;
Chisako Ota, Nerima-ku, JP;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
The objective of this invention is to provide a motor control device, and a disk drive device using the same, in which during emergency operation it is possible to supply necessary power to the motor while limiting enlargement of the circuit area. During the retraction operation, control is performed to alternate between a short-circuit mode in which each terminal U, V, W of the spindle motor Mis short-circuited to the terminal ICOM, and a rectifying mode in which the back electromotive force of the spindle motor Mis rectifies and output to the power supply line ISOV, VGND while the input of power from the power supply line ISOV, VGND to the spindle motor Mis blocked.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile