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:
Oct. 12, 1993
Filed:
Jul. 30, 1991
Peter Krauss, Bubenreuth, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An x-ray diagnostics installation for subtraction angiography has an x-ray radiator which generates an x-ray beam that penetrates a patient, the resulting image being processed in an x-ray image intensifier video chain wherein the x-ray image is converted into a sequence of video signals for display. The video chain includes an image memory for storing the video signals and a difference-forming unit for subtracting the stored video signals from current video signals to form difference video signals. An image reproduction stage has various adjustment elements permitting variation of parameters identifying a region or a window of brightness values for reproducing the video signals on the display. By means of the adjustment elements, various image parameters, such as background brightness and darkening of the blood vessels, can be set independently of each other.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile