Patent · US Expired

X-Ray diagnostic installation

US4447827A · kind A · utility

4Cited by

2References

3Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Mircea Alexandrescu · Baiersdorf, DE
Joerg Haendle · Erlangen, DE

Key dates

Filing date	May 17, 1982
Grant date	May 8, 1984
Priority date	—
Expiry date	May 17, 2002

Classification

Technology area (CPC H)Electricity
CPC primaryH04N5/3205
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An exemplary embodiment has the purpose of representation of margins of organs, and comprises a television pickup system, a first image memory, a difference stage for providing subtraction images through difference formation from the stored and the current video signal, and a monitor. Connected with the output of the difference stage is an adder which is connected with a second image memory whose output signal is supplied to the adder so that, in the second image memory, the image point data of the difference stage is summed up. The output signal of the second image memory is supplied to the monitor. The circuit disposed between the first image memory and the adder is so designed that it forms the absolute values (.vertline.A.vertline.) of the image point data from the difference stage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.