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:
Aug. 10, 1999
Filed:
Jul. 15, 1998
Applicant:
Inventors:
Chin Li, Clark, NJ (US);
Larry B Li, Irvine, CA (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318439 ;
Abstract
A circuit to control a motor having phase inputs. A respective control signal for each phase input of the motor is generated such that each phase input is cyclically driven and undriven. Additionally, changes at each phase input relative to a reference potential are measured, and changes at each phase input during time intervals in which noise is expected are ignored: timing information based on the measured changes at the phase inputs is generated, and timing information to carry out the step of generating a respective control signal is used.