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公开(公告)号：US4613485A
公开(公告)日：1986-09-23
申请号：US581101
申请日：1984-02-17
CPC分类号： B01D8/00 , B01J2219/0894
摘要： The present invention provides a trap for a vapor species, particularly a pnictide.sub.4 vapor species, for a vacuum system of the type including a vacuum chamber communicating with a forepump through a vacuum line. The trap may be positioned within the vacuum chamber itself, or in the alternative, the trap may be located between the vacuum chamber and the forepump. The trap includes a housing for a cracker, which may be a heated filament or a plasma, which cracks the pnictide vapor species into pnictide.sub.2. The walls of the housing are cooled so that the trapped pnictide species readily forms a film and adheres to the walls of the housing. The pnictide.sub.4 vapor species, which may be harmful to the operation of a forepump, is prevented from entering the forepump. A removable sleeve can be positioned in the housing so that the cracked species adheres to it. The sleeve may be removed from the housing for maintenance and replacement purposes. When the trap is located within the vacuum chamber itself, it also functions to reduce background pnictide.sub.4 pressure in that chamber.
摘要翻译： 本发明提供了一种用于真空系统的蒸汽种类，特别是pnictide4蒸气物质的捕集阱，该真空系统包括通过真空管道与前级泵通过的真空室。 捕集器可以定位在真空室本身内，或者可选地，阱可以位于真空室和前级泵之间。 捕集器包括用于裂化器的壳体，其可以是加热的细丝或等离子体，其将pnictide蒸气物质裂解成pnictide2。 壳体的壁被冷却，使得被捕获的pnictide物质容易形成膜并粘附到壳体的壁上。 可能对前排泵的操作有害的pnictide4蒸汽物质被阻止进入前级泵。 可拆卸的套筒可以被定位在壳体中，使得裂纹物质附着在其上。 套管可以从外壳上取下来进行维护和更换。 当陷阱位于真空室本身内时，它也起到减小该室内的背景影响4的作用。
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公开(公告)号：US06118974A
公开(公告)日：2000-09-12
申请号：US797446
申请日：1997-02-06
IPC分类号： H04N7/10
CPC分类号： H04N7/106
摘要： The present invention presents a multimedia signal distribution device that implements the Electronics Industry Association (EIA) "Node Zero" standard for a Consumer Electronics Bus (CEBus) signal distribution network. The preferred embodiment of the present invention comprises a block frequency conversion loop that is combined with other conventional electronic devices to accomplish the multimedia signal frequency conversion, filtering and distribution functions required of the ideal Node Zero device set forth in the EIA CEBus standard. The present invention preferably implements the CEBus block frequency conversion, input and output band-pass filtering, and signal amplification requirements by a block frequency conversion loop comprised of the following components which process the internal signal block in the following series order: (a) passive first low-pass or band-pass filter; (b) a 1000 MHz first frequency mixer; (c) an intermediate frequency (IF) filter; (d) a 38 dB signal amplifier; (e) a selectable second frequency mixer and (f) a tunable second low-pass or band-pass filter 11. Optionally, a broad-band quadrature signal phase shifting device may be implemented in conjunction with a signal coupling balun transformer at the input and output, respectively, of the first frequency mixer. This quadrature phase shifting improves the filtering of the internal signal block after the quadrature outputs have been shifted by the first frequency mixer to an intermediate frequency (IF) signal range.
摘要翻译： 本发明提供一种实现消费电子总线（CEBus）信号分配网络的电子工业协会（EIA）“节点零”标准的多媒体信号分配装置。 本发明的优选实施例包括与其它常规电子设备组合以实现EIA CEBus标准中阐述的理想节点零设备所需的多媒体信号频率转换，滤波和分配功能的块频率转换回路。 本发明优选地通过由以下组件组成的块频率转换回路实现CEBus块频率转换，输入和输出带通滤波以及信号放大要求，所述组件按照以下系列顺序处理内部信号块：（a）被动 第一个低通或带通滤波器; （b）1000MHz第一混频器; （c）中频（IF）滤波器; （d）38dB信号放大器; （e）可选择的第二混频器和（f）可调谐的第二低通或带通滤波器11.可选地，宽带正交信号相移装置可以结合在输入端处的信号耦合平衡不平衡变压器 并分别输出第一混频器。 在正交输出已被第一混频器移位到中频（IF）信号范围之后，该正交相移改善了内部信号块的滤波。
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公开(公告)号：US5691959A
公开(公告)日：1997-11-25
申请号：US223897
申请日：1994-04-06
申请人： James A. Kriewall , Edwin F. Johnson , Alan R. Selfridge , John P. Fairbanks , Verne H. Wilson , Robert W. Parry , James D. Cummins
发明人： James A. Kriewall , Edwin F. Johnson , Alan R. Selfridge , John P. Fairbanks , Verne H. Wilson , Robert W. Parry , James D. Cummins
CPC分类号： G06F3/0433 , G06F3/043 , Y10S367/907
摘要： A digitizer uses acoustic waves originating from a stylus to determine the position of the stylus on a plate. The acoustic waves are introduced into the plate from the tip of the stylus and are detected by a plurality of detectors positioned at various points along the periphery of the plate. By sensing differences in the arrival times of the acoustic waves at the detectors, a microprocessor calculates the position of the stylus. In a preferred embodiment using a non-tethered stylus, four detectors are positioned at the corners of a rectangle, and the time differences are used as addresses in a lookup table, which is programmed to contain x and y coordinates corresponding to the time differences, Different embodiments may detect only the "fast" symmetrical waves or only the "slow" antisymmetrical waves generated in the plate, or may use the arrival times of both types of waves to determine the stylus position.
摘要翻译： 数字化仪使用来自触控笔的声波来确定触控笔在平板上的位置。 声波从触针的尖端引入到板中，并且通过位于板的周边的各个点处的多个检测器来检测。 通过检测检测器的声波到达时间的差异，微处理器计算出触针的位置。 在使用非系留触针的优选实施例中，四个检测器位于矩形的角部，并且时差被用作查找表中的地址，其被编程为包含对应于时间差的x和y坐标， 不同的实施例可以仅检测“快”对称波或仅检测板中产生的“慢”反对称波，或者可以使用两种类型的波的到达时间来确定触针位置。
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公开(公告)号：US4746500A
公开(公告)日：1988-05-24
申请号：US886567
申请日：1986-07-16
CPC分类号： B01D8/00 , B01J2219/0894
摘要： A fore line trap is located before the forepump in a vacuum system. The trap utilizes a cracker, which may be a heated filament or a plasma, and cold walls. The cracker cracks pnictide gas species such as P.sub.4 into other species such as P.sub.2 which have a higher sticking co-efficient. The pnictides are deposited on the cold walls. The cold walls preferably comprise a sleeve which may be removed from the trap and replaced by a clean one.
摘要翻译： 前线陷阱位于真空系统中的前泵前。 该捕集器采用裂化器，其可以是加热的长丝或等离子体，以及冷壁。 裂解器将P4等气体物质分解成其他物种，如P2，具有较高的粘附效率。 ict ides存放在寒冷的墙壁上。 冷壁优选地包括可从捕集器移除并由干净的壁替代的套筒。
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