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:
May. 26, 1992
Filed:
Dec. 27, 1990
Shigeo Yoshida, Chiba, JP;
Isamu Fujimoto, Chiba, JP;
Hideyuki Suzuki, Tokyo, JP;
Hiroshi Asano, Saitama, JP;
Toru Hosaka, Tokyo, JP;
Takashi Onioh, Chiba, JP;
Kojyu Nagasaki, Tokyo, JP;
Kenichi Matsuoka, Tokyo, JP;
Kazufumi Taura, Tokyo, JP;
Dowa Mining Co., Ltd., Tokyo, JP;
Abstract
The present optical position detection method and the apparatus therefor is adapted to compute an arithmetic mean of the adjusted light reception values received by adjacent photodetectors as the virtual light reception value at the virtual position, compare not only the adjusted light reception values of the respective photodetectors but also the virtual light reception values with the reference level and utilize the virtual position also as the light interruption position data when light interruption is determined, thus enhancing the accuracy of detecting the position of an object.