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. 07, 2014
Filed:
Sep. 01, 2011
Applicants:
Ravishanker Krishnamoorthy, Singapore, SG;
Foo Leng Leong, Singapore, SG;
Edy Susanto, Singapore, SG;
Inventors:
Ravishanker Krishnamoorthy, Singapore, SG;
Foo Leng Leong, Singapore, SG;
Edy Susanto, Singapore, SG;
Assignee:
Marvell World Trade Ltd., , BB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 1/00 (2006.01); H02P 6/18 (2006.01);
U.S. Cl.
CPC ...
H02P 6/182 (2013.01); H02P 6/187 (2013.01);
Abstract
Systems, methods, and other embodiments associated with back-EMF detection for motor control are described. In an embodiment, an apparatus includes a drive circuit configured to apply excitation signals to respective inputs of a motor, a signal inhibit circuit configured to convey a signal to inhibit application of the excitation signals during an interval, and a measuring circuit configured to measure a back-electromotive force (EMF) signal crossing a reference signal during the interval.