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:
Nov. 20, 1990
Filed:
Jul. 28, 1989
Applicant:
Inventor:
Yuzo Kato, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356375 ; 2504911 ; 356401 ;
Abstract
A method of detecting the position of an object with respect to a predetermined standard position, includes detecting a signal concerned wtih the object, subjecting the detected signal and a predetermined reference signal to correlation processing to form a correlation signal, and detecting the position of the object with respect to the predetermined standard position, in accordance with the formed correlation signal.