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Position coordinate determination appts. - has TV camera, monitor and light pen which are employed to produce digital coordinate data of desired image points
Position coordinate determination appts. - has TV camera, monitor and light pen which are employed to produce digital coordinate data of desired image points
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机译：位置坐标确定装置。 -具有电视摄像机，监视器和光笔，用于产生所需图像点的数字坐标数据
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摘要
The system is for determining the coordinate location of a desired point in an image so as to be able to relocate that point for further processing. A TV camera (1) views an image field and supplies a video signal with synchronous line and field deflection components to a monitor (8). A light sensitive pen (9) is held against the screen of the monitor at the location point of interest. As the scanning beam of the monitor passes the light pen a sampling circuit is actuated to sample the ramp drives of the deflection circuit which signal is used to control clock circuitry for generating the coordinate values.
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