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. 21, 2020
Filed:
Jun. 15, 2018
Canon Precision Inc., Hirosaki-shi, JP;
Ryo Sasaki, Hirosaki, JP;
CANON PRECISION, INC., Aomori-Ken, JP;
Abstract
An encoder includes a scale having a pattern column with patterns periodically changing a physical characteristic, a detection element array disposed movable relatively to the scale and including detection elements configured to detect light from the pattern column are arranged in a moving direction, a signal processor configured to convert an output signal from the detection element array into position information. The detection element array includes first to fourth detection elements are arranged in order of the first detection elements, the second detection elements, the first detection elements, the second detection elements, the third detection elements, the fourth detection elements, the third detection elements, and the fourth detection elements. The signal processor generates a first signal based on an output signal from the first and third detection elements and a second signal based on an output signal from the second and fourth detection elements.