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:
Nov. 01, 2016
Filed:
Aug. 15, 2014
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Takeshi Yamamoto, Fujisawa, JP;
Norihiro Suzuki, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B 19/29 (2006.01); G11B 20/10 (2006.01); G01D 5/244 (2006.01); G11B 20/12 (2006.01);
U.S. Cl.
CPC ...
G11B 20/10 (2013.01); G01D 5/24461 (2013.01); G11B 2020/1264 (2013.01);
Abstract
An encoder that detects a position of a movable body from an origin includes a signal generation unit configured to generate an incremental signal and an origin candidate signal by using A-phase and B-phase voltages obtained from an orthogonal signal pattern, a reference position detection unit configured to detect a reference position signal by using a Z-phase voltage obtained from a reference position signal pattern, and a counter configured to reset a counted value of the incremental signal on the basis of the origin candidate signal.