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.

Date of Patent:
May. 10, 2022

Filed:

Oct. 01, 2019
Applicant:

Casio Computer Co., Ltd., Tokyo, JP;

Inventors:

Atsushi Kato, Akishima, JP;

Mototaka Minakuchi, Fussa, JP;

Chiharu Shiratori, Ome, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04G 21/00 (2010.01); G04C 3/14 (2006.01);
U.S. Cl.
CPC ...
G04G 21/00 (2013.01); G04C 3/146 (2013.01);
Abstract

A rotation detecting apparatus includes a rotating member, detectors regarding a rotating direction of the rotating member, and a predetermined unit. Each detector detects whether a predetermined standard direction is included in detecting ranges different for each rotating member and outputs a result. The predetermined unit combines the detection result output from each detector and extracts an angle range. The predetermined unit specifies the rotating direction of the rotating member based on changes in the angle ranges extracted a plurality of times occurring in the plurality of times. The detecting range corresponding to each of the plurality of detectors is determined to be able to identify relative positions before and after a change from the angle range extracted by the predetermined unit to the angle range that is clockwise or counterclockwise apart a predetermined number or less to the angle range extracted, the predetermined number being two or more.


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