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:
Jun. 21, 2016
Filed:
Apr. 25, 2013
Snu R&db Foundation, Seoul, KR;
RS Automation Co., Ltd., Pyeongtaek-si, Gyeonggi-do, KR;
Dong Il Cho, Seoul, KR;
Wook Bahn, Seoul, KR;
Tae Il Kim, Seoul, KR;
Sang Hoon Lee, Seongnam-si, KR;
SNU R&D Foundation, Seoul, KR;
RS Automation Co., Ltd., Pyeongtaek-si, Gyeonggi-Do, KR;
Abstract
This disclosure relates to a method for detecting an absolute rotation angle of an optical rotary encoder, and more particularly, to an optical encoder having a signal track for generating a digital pulse which may correct an error when a high-level bit is generated in a Vernier type. The optical encoder according to an embodiment of the present disclosure includes a master track for generating a sinusoidal signal with the fastest cycle, a Vernier track for generating a sinusoidal signal with a cycle smaller than that of the master track by a predetermined value, and a digital track for generating a digital pulse signal with a cycle proportional to the cycle of the sinusoidal signal of the master track.