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. 01, 1985
Filed:
Aug. 26, 1982
Applicant:
Inventor:
Leonardus A Verhoeven, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358111 ; 358174 ; 364414 ; 378 99 ;
Abstract
The invention relates to a method of and a device for generating differential images in which the effect of fluctuations of the X-ray pulse or the gain of the images intensifier/image pick-up tube network on the differential image is eliminated. To this end, the peak value is determined for each X-ray image in order to be stored in a fixed location in a memory. The difference between the logarithms of the peak values is added to the differential image, so that said fluctuations are compensated for.