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. 14, 1988
Filed:
Mar. 31, 1986
Applicant:
Inventor:
Tutomu Ueyama, Yawata, JP;
Assignee:
Dainippon Screen Mfg. Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
2502 / ; 2502 / ;
Abstract
A method for detecting a position wherein a signal outputted from a position detecting scale is detected by at least two detectors, an output value of a preceding detector of these two detectors is stored anew at the time when an output value of a following detector of the two detectors comes near a scale position on which the output value of the preceding detector is once stored and becomes equal to the output value of the preceding detector, and a position detecting signal is outputted, these steps being repeated to detect the position.