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11. 发明授权

US4769701A Stereo X-ray installation 失效
标题翻译：立体声X射线安装
公开(公告)号：US4769701A
公开(公告)日：1988-09-06
申请号：US063963
申请日：1987-06-19
申请人： Hartmut Sklebitz , Gerhard Hahm
发明人： Hartmut Sklebitz , Gerhard Hahm
IPC分类号： H05G1/64 , A61B6/00 , A61B6/02 , H04N5/32 , H04N7/18 , H04N13/00 , H05G1/61
CPC分类号： H04N13/0207 , H04N5/32 , H04N13/0003 , H04N13/0253 , H04N13/0296 , H04N13/0436
摘要： An x-ray apparatus for generating an image of an examination subject, including an image pattern of an instrument, for the purpose of guiding the instrument, includes dual x-ray sources and a stereo viewer for generating a stereo image of the examination subject from a video signal produced by attenuation of the x-rays by the patient and the instrument, a detector which identifies the presence of the instrument in the video signal and generates an output signal upon detection thereof, a phase-locked loop circuit for generating an image pattern of the instrument from the output of the detector, a mixer which combines the image pattern with the video signal, and a switching stage connected between the output of the phase-locked loop circuit and the mixer, the switching stage having a control input supplied with the output signal from the detector such that the image pattern of the instrument is supplied to the mixer in the absence of an output signal from the detector.
摘要翻译：一种用于产生检查对象的图像的X射线设备，包括用于引导仪器的仪器的图像图案，包括双X射线源和立体观看器，用于产生检查对象的立体图像，由患者和仪器衰减x射线产生的视频信号，识别视频信号中存在的仪器并在检测到视频信号时产生输出信号的检测器，用于产生图像的锁相环电路来自检测器的输出的仪器的图案，将图像图案与视频信号组合的混合器以及连接在锁相环电路的输出和混频器之间的开关级，开关级具有提供的控制输入来自检测器的输出信号使得在没有来自检测器的输出信号的情况下，将仪器的图像图案提供给混合器。

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