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. 16, 1995
Filed:
Nov. 04, 1993
Applicant:
Inventors:
Assignee:
Hitachi Medical Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
378 987 ; 378 982 ;
Abstract
An X-ray TV camera apparatus having a function to switch a visual field of an X-ray image, comprising an X-ray generating apparatus, an image intensifier for converting X-ray information by an X-ray which was generated from the X-ray generating apparatus and passed through an object to be examined into an optical image, a TV camera for converting the optical image from the image intensifier into the video signal, a switch to switch the visual field of the X-ray image on the image intensifier, and a correcting circuit to shading correct the video signal so that the video signal from the TV camera gives a uniform image in accordance with the visual field switched by the switch.