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1. 发明申请

WO1987004846A1 ELECTRON BEAM MEMORY SYSTEM WITH ULTRA-COMPACT, HIGH CURRENT DENSITY ELECTRON GUN 审中-公开
标题翻译：具有超紧凑，高电流密度电子枪的电子束存储系统
公开(公告)号：WO1987004846A1
公开(公告)日：1987-08-13
申请号：PCT/US1987000187
申请日：1987-01-29
申请人： CREWE, Albert, V.
IPC分类号： G11B09/10
CPC分类号： H01J37/065 , G11B9/10 , H01J37/305 , H01J2237/06316
摘要： A rapid random accessed electron beam memory system (10) comprises a disc (13) mounted for rotation and supporting an information storage medium. An electron gun (18, 19, 20) is mounted for movement across the disc. The gun has ultra-compactness and extremely low mass, yet capable of developing a finely focused electron beam probe at high beam current densities. The gun comprises a low-mass field emission cathode and means for heating the cathode, the cathode having an emitting tip and being adapted to receive a predetermined electrical potential to form a high brightness electron source at the tip. A low-mass electrode receives a predetermined accelerating potential for receiving electrons from the tip to form an electron beam. A single focus lens of low mass is positioned a relatively short object distance from the tip for receiving the beam and forms a finely focused, yet intense electron beam probe at a relatively short focal distance therefrom. The probe is of such high current density due to the brightness of the source and the power of the lens that the minimum diameter of the probe is significantly affected by space charge effects in said beam. The sum of the object and image distances are so small as to suppress the space charge contribution to probe diameter and thereby make practicable a finely focused, yet extremely intense electron beam probe. The total mass of the gun is so low as to be readily capable of being rapidly accelerated and decelerated to effectuate a rapid random accessing of data stored on the information storage medium.
摘要翻译：一种快速随机存取的电子束存储系统（10）包括一个安装用于旋转并支持信息存储介质的盘（13）。安装电子枪（18,19,20）以便跨越盘移动。该枪具有超紧凑性和极低质量，但能够以高光束电流密度开发精细聚焦的电子束探头。枪包括低质量场发射阴极和用于加热阴极的装置，阴极具有发射尖端，并且适于接收预定电位以在尖端处形成高亮度电子源。低质量电极接收预定的加速电位，用于从尖端接收电子以形成电子束。低质量的单焦点透镜被定位成与用于接收光束的尖端相对较短的物体距离，并形成与其相对较短焦距的精细聚焦而强烈的电子束探针。由于源的亮度和透镜的功率，探针具有如此高的电流密度，因此探针的最小直径受到所述光束中的空间电荷效应的显着影响。物体和图像距离的总和非常小，以抑制空间电荷对探针直径的贡献，从而使得精细聚焦但非常强烈的电子束探针变得可行。枪的总质量非常低，以便能够快速加速和减速，以实现对存储在信息存储介质上的数据的快速随机存取。

2. 发明申请

WO1987004845A1 ELECTRON BEAM MEMORY SYSTEM WITH IMPROVED HIGH RATE DIGITAL BEAM PULSING SYSTEM 审中-公开
标题翻译：具有改进的高速数字波束脉冲系统的电子束存储器系统
公开(公告)号：WO1987004845A1
公开(公告)日：1987-08-13
申请号：PCT/US1987000186
申请日：1987-01-29
申请人： CREWE, Albert, V.
IPC分类号： G11B09/10
CPC分类号： G11B9/10
摘要： An electron beam memory system comprises: a substrate (14) mounted for rotation and supporting an information storage medium (13). Means are provided for rotating the substrate. An electron gun (18) comprises a field emission cathode (38) having an emitting tip (40), anode means (50), 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 (54) for receiving the beam and for forming a very small yet intense electron beam probe at a predetermined first focal distance (FD2) therefrom. A high rate digital beam pulsing system comprises voltage pulse generating means (74) 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 substract from the accelerating potential to thereby cause the focus lens means to focus the beam at a predetermined second focal distance (FD1) 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.

3. 发明申请

WO1997004452A1 RECORDING MEDIUM, INFORMATION REPRODUCING DEVICE, INFORMATION RECORDING DEVICE, AND INFORMATION RECORDING/REPRODUCING DEVICE 审中-公开
标题翻译：记录媒体，信息再现装置，信息记录装置和信息记录/再现装置
公开(公告)号：WO1997004452A1
公开(公告)日：1997-02-06
申请号：PCT/JP1996002017
申请日：1996-07-19
申请人： SONY CORPORATION , HAGIWARA, Yoshiaki
发明人： SONY CORPORATION
IPC分类号： G11B09/10
CPC分类号： G11B23/0021 , G11B9/08 , G11B9/10 , G11B11/08 , G11B23/0316 , G11B33/14
摘要： A disk (1) is constituted of a substrate (11), an aluminum signal layer (12) in which pits (14) are made, and a protective plate (13). An information reproducing device reproduces information from the disk (1) by means of a reproducing circuit (5) by convergently emitting an electron beam (E) from an electron gun (40) and detecting the variation of the intensity of the reflection of the beam (E) with a detector (42). A recording medium (20) is constituted of a conductive layer (22), an insulating layer (23), and an island-like fixed electrode (24) formed on the layer (23) and electrically insulated from its periphery. The fixed electrode (24) has a memory function. To write information on the medium (20), electrons are implanted into the electrode (24) with an electron gun (40). To erase all the information at a time, a voltage is applied across the conductive layer (22). To read out information, the electrostatic effect between the fixed electrode (24) and its counter electrode is utilized. Therefore, the information recording capacity of the medium (20) is increased and the information reading accuracy from the medium (20) is improved.
摘要翻译：盘（1）由衬底（11），其中制成凹坑（14）的铝信号层（12）和保护板（13）构成。信息再现装置通过从电子枪（40）会聚地发射电子束（E）并通过再现电路（5）从盘（1）再现信息，并且检测光束的反射强度的变化（E）与检测器（42）。记录介质（20）由导电层（22），绝缘层（23）和形成在层（23）上并与其周边电绝缘的岛状固定电极（24）构成。固定电极（24）具有记忆功能。为了在介质（20）上写入信息，用电子枪（40）将电子注入到电极（24）中。为了一次擦除所有信息，跨越导电层（22）施加电压。为了读出信息，利用固定电极（24）与其对置电极之间的静电效应。因此，介质（20）的信息记录容量增加，并且来自介质（20）的信息读取精度提高。

4. 发明申请

WO1988001424A1 ELECTRON BEAM MEMORY SYSTEM WITH ULTRA-COMPACT, HIGH CURRENT DENSITY ELECTRON GUN 审中-公开
标题翻译：具有超紧凑，高电流密度电子枪的电子束存储系统
公开(公告)号：WO1988001424A1
公开(公告)日：1988-02-25
申请号：PCT/US1987001875
申请日：1987-08-06
申请人： CREWE, Albert, V.
IPC分类号： G11B09/10
CPC分类号： G11B9/10 , H01J3/021
摘要： A rapid random accessed electron beam memory system comprises a disc (14) mounted for rotation and supporting an information storage medium (13). An electron gun (18) is mounted for movement across the disc. The gun has ultra-compactness and extremely low mass, yet is capable of developing a finely focused electron beam probe at high beam current densities. The gun comprises a low-mass field emission cathode, the cathode having an emitting tip (60) and being adapted to receive a predetermined electrical potential to form a high brigthness electron source at the tip. An electrostatic focus lens forms a real image of the electron source in the vicinity of the storage medium. The lens comprises a first electrode (66) adapted to receive a predetermined second electrical potential which is positive relative to the potential on the tip and has a value effective to extract electrons from the tip. The electrode defines a relatively small aperture (78) for deforming the diameter of an electron beam which is formed. A second electrode (68) located downbeam of the first electrode is adapted to receive an adjustable third, focusing, electrical potential which is negative relative to the second electrical potential, and said second electrode having an aperture (80) which is larger than the first electrode aperture. A third electrode (70) located downbeam of the second electrode is adapted to receive a fourth, accelerating, electrical potential which is positive relative to the third potential for accelerating the beam, the third electrode having an aperture (82) which is also larger than said first electrode aperture. The second, third and fourth electrical potentials are selected to establish beamfocusing fields between said first and second and between said second and said third electrodes. The gun has an ultra-low mass in order to make feasible rapid random accessing of any area of the storage medium.

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