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:
Mar. 18, 2014
Filed:
Apr. 14, 2011
Takuya Tsuchikawa, Kyoto, JP;
Yoshitsugu Uedaira, Kyoto, JP;
Yuichiro Nakata, Kyoto, JP;
Junji Fujino, Kyoto, JP;
Takuya Tsuchikawa, Kyoto, JP;
Yoshitsugu Uedaira, Kyoto, JP;
Yuichiro Nakata, Kyoto, JP;
Junji Fujino, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
The calculation device () according to the present invention receives a plurality of reflected light intensity information for indicating the intensity of each reflected light which reaches a single light receiver via a reflecting object, the reflected light having been emitted in sequence from a plurality of light emitters (through) provided in mutually different positions, computes a phase difference of an intensity variation which occurs among the reflected light, and determines a movement of the reflecting object on the basis of the calculation result.