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. 30, 2019
Filed:
Feb. 24, 2017
Applicant:
Renesas Electronics Corporation, Tokyo, JP;
Inventors:
Assignee:
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 11/225 (2016.01); H03M 1/48 (2006.01); G01D 5/20 (2006.01); G01B 7/30 (2006.01); H03M 1/20 (2006.01); H02P 6/16 (2016.01);
U.S. Cl.
CPC ...
H03M 1/485 (2013.01); G01B 7/30 (2013.01); G01D 5/2053 (2013.01); H02K 11/225 (2016.01); H02P 6/16 (2013.01); H03M 1/201 (2013.01);
Abstract
The present invention provides a signal processor that improves a resolution of a phase detection without increasing a clock frequency of a controller or decreasing a frequency of an excitation signal. A signal processorincludes a comparatorthat compares a signal obtained by phase modulating a carrier frequency at a rotor rotation angle of a resolver with a dither signal.