Traffic Telematics (Verkehrstelematik)

H. Hartenstein, P. Vortisch
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Abstract

An electron beam memory system comprises a substrate mounted for rotation and supporting an information storage medium. Means are provided for rotating the substrate. An electron gun comprises a field emission cathode having an emitting tip, anode means, and means for developing and applying between the tip and the anode means a predetermined accelerating potential for forming a high brightness electron source at the tip and for causing an electron beam to be formed through the anode means. The gun includes focus lens means for receiving the beam and for forming a very small yet intense electron beam probe at a predetermined first focal distance therefrom. A high rate digital beam pulsing system comprises voltage pulse generating means for developing a series of voltage pulses of predetermined magnitude and duration, and means for applying the pulses to the gun such that the pulses add to or subtract from the accelerating potential to thereby cause the focus lens means to focus the beam at a predetermined second focal distance different from the first focal distance. The gun is positioned relative to the recording medium such that one of the first and second focal distances corresponds to the distance between the focus lens means and the recording medium.
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交通信息系统(Verkehrstelematik)
一种电子束存储系统包括安装用于旋转并支持信息存储介质的基板。提供用于旋转基板的装置。一种电子枪包括具有发射尖端的场发射阴极、阳极装置以及用于在尖端和阳极装置之间形成和施加用于在尖端形成高亮度电子源和用于通过阳极装置形成电子束的预定加速电位的装置。该枪包括聚焦透镜装置,用于接收光束和用于在其预定的第一焦距处形成非常小而强的电子束探头。一种高速率数字光束脉冲系统,包括用于产生一系列预定大小和持续时间的电压脉冲的电压脉冲产生装置,以及用于将所述脉冲施加到所述枪机的装置,使得所述脉冲与所述加速势相加或相减,从而使所述聚焦透镜装置将所述光束聚焦在不同于所述第一焦距的预定第二焦距上。枪相对于记录介质定位,使得第一焦距和第二焦距中的一个对应于聚焦透镜装置与记录介质之间的距离。
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Frontmatter Editorial: Evolution und Perspektiven der Supercomputer Abschied von Rudolf Oldenbourg Editorial: Visualisierung Traffic Telematics (Verkehrstelematik)
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