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. 28, 2003
Filed:
Jan. 25, 2002
Hirokazu Kawagoshi, Shiga, JP;
NEC Corporation, Tokyo, JP;
Abstract
A brushless motor driving device is so configured to control excitation of each phase armature coil an the basis of starting patterns supplied from a start circuit in a starting operation and a rotator position signal obtained from an induced voltage generated between opposite ends of each phase armature coil after completion of the starting operation, thereby to rotate a rotator. The start circuit includes a main counter generates a pulse at each time the main counter counts a clock signal to a variable full count value, a sub counter counts the pulse generated by the main counter, the variable full count value being subtracted by a count value of the sub counter, and a star pattern generating circuit generating a starting pattern in response to the pulse generated by the main counter.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile