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:
Apr. 28, 2015
Filed:
Feb. 24, 2011
Hiroyuki Kishida, Yachiyo, JP;
Toru Morita, Yokohama, JP;
Yoshiji Takahashi, Natori, JP;
Kou Ohno, Sendai, JP;
Takashi Nagase, Iruma, JP;
Kenji Omata, Utsunomiya, JP;
Hirofumi Takeuchi, Natori, JP;
Hiroyuki Kishida, Yachiyo, JP;
Toru Morita, Yokohama, JP;
Yoshiji Takahashi, Natori, JP;
Kou Ohno, Sendai, JP;
Takashi Nagase, Iruma, JP;
Kenji Omata, Utsunomiya, JP;
Hirofumi Takeuchi, Natori, JP;
Nikon Corporation, Tokyo, JP;
Abstract
An encoder system includes: a first single-rotation absolute encoder that outputs a first signal corresponding to an angular position of a first rotatable shaft; a power transmission device that transmits the power of the first shaft to a second rotatable shaft with a predetermined transmission ratio; a second single-rotation absolute encoder that outputs a second signal corresponding to an angular position of the second shaft; and a signal processing section that generates data related to the rotation count of the first shaft based on at least the first signal and the second signal.