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:
Jan. 07, 1997
Filed:
May. 21, 1996
Atsuhiro Iida, Nagaokakyo, JP;
Shimadzu Corporation, Kyoto, JP;
Abstract
In a spectrophotometer according to the present invention, electric signal from a photo-detector is converted into digital data by an A/D convertor and stored in a memory. In the process of correcting data, a signal processing unit first reads out from the memory data of a wavelength of a plurality of points consisting of a target point to be corrected and other points in a predetermined proximity of the target point in the two-dimensional area on the sample surface. Then the signal processing unit corrects the data of the target point using the data of the other proximal points. In correcting data, a set of two weights a.sub.i and b.sub.j are assigned to every one of the points, where the values of the weights a.sub.i change according to the position of the points in the X direction and the values of the weights b.sub.j change according to the position of the points in the Y direction. By predetermining the values of the weights a.sub.i and b.sub.j properly, the difference in the resolving power between the X direction and the Y direction is cancelled.