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51. 发明申请

WO1985004020A1 THERMAL BARRIER FOR VARIABLE TEMPERATURE NMR 审中-公开
标题翻译：用于可变温度NMR的热障
公开(公告)号：WO1985004020A1
公开(公告)日：1985-09-12
申请号：PCT/US1985000252
申请日：1985-02-19
申请人： VARIAN ASSOCIATES, INC.
发明人： VARIAN ASSOCIATES, INC. , LAUDERMILCH, John, R.
IPC分类号： G01R33/08
CPC分类号： G01R33/31 , Y10S505/844
摘要： An NMR system for obtaining high resolution spectroscopic measurements at a selected temperature includes gradient correcting means (40) disposed in proximity to an NMR probe (32), for imposing desired gradients on the volume occupied by the sample (35) within the probe (32). A heat exchange gas is impelled through a heat exchanger (33) and then surrounds the sample (35) to bring the sample (35) to the desired temperature. A thermal barrier (72), innocuous to RF excitation and of relatively low magnetic susceptibility protects the gradient correcting means (40) from drift due to heat exchange with the heat exchanging gas.

52. 发明申请

WO1981001881A1 FEEDBACK FIFO FOR CYCLIC DATA ACQUISITION AND NMR INSTRUMENT CONTROL 审中-公开
标题翻译：反馈FIFO用于循环数据采集和NMR仪器控制
公开(公告)号：WO1981001881A1
公开(公告)日：1981-07-09
申请号：PCT/US1980001661
申请日：1980-12-08
申请人： VARIAN ASSOCIATES INC
发明人： VARIAN ASSOCIATES INC , BERKOWITZ E
IPC分类号： G01N27/00
CPC分类号： G01R33/28
摘要： Cyclic instrument control and data acquisition functions which are critically dependent upon synchrony are directed from a computer based system including a FIFO buffer (30) adapted to feedback the most recently active word from its output register (36) and re-store said word at a corresponding sequential position (34) in the FIFO queue. To accomodate complex and interleaved control and data acquisition cycles, each FIFO word has a state portion for commanding external devices, a persistence portion for specifying the duration of selected state active in the FIFO output buffer for a desired persistence interval, and a repetition portion for specifying the number of consecutive discrete repetitions of the currently active state-persistence datum at the output of the FIFO. Termination of the cyclic sequence is accomplished at the expiration of a preselected number of complete cycles. The FIFO input address is selected automatically in accord with the number of words comprising a single complete sequence of instrument control/data inquisition functions.
摘要翻译：严格依赖于同步的循环仪器控制和数据获取功能是从包括适于从其输出寄存器（36）反馈最近活动的字的FIFO缓冲器（30）的基于计算机的系统引导的，并且在一 FIFO队列中相应的顺序位置（34）。为了适应复杂和交错的控制和数据采集周期，每个FIFO字具有用于命令外部设备的状态部分，用于指定期望的持续时间间隔在FIFO输出缓冲器中指定所选状态的持续时间的持续部分，以及用于指定FIFO输出端当前活动的状态持久性数据的连续离散重复次数。循环序列的终止在预选数量的完整循环期满时完成。 FIFO输入地址根据包含单个完整的仪器控制/数据查询功能序列的字数自动选择。

53. 发明申请

WO1998024176A1 CHARGE SENSITIVE AMPLIFIER WITH HIGH COMMON MODE SIGNAL REJECTION 审中-公开
标题翻译：具有高通用模式信号抑制的充电灵敏放大器
公开(公告)号：WO1998024176A1
公开(公告)日：1998-06-04
申请号：PCT/US1997020872
申请日：1997-11-13
申请人： VARIAN ASSOCIATES, INC.
发明人： VARIAN ASSOCIATES, INC. , COLBETH, Richard, E. , ALLEN, Max, J. , MALLINSON, Martin
IPC分类号： H03F03/45
CPC分类号： H03F3/45076 , H03F1/223 , H03F3/345
摘要： A charge sensitive amplifier with high common mode signal rejection includes an NPN bipolar junction transistor (BJT) and a P-channel metal oxide semiconductor field effect transistor (MOSFET) connected in a totem pole circuit configuration. The BJT base terminal receives a dc reference voltage, the MOSFET gate terminal receives the incoming data signal, the MOSFET drain terminal is grounded and the BJT collector terminal provides the output voltage signal and is biased by the power supply through a resistive circuit element. The MOSFET operates as a source follower amplifier with the transconductance of the BJT serving as the load at the source terminal, while the BJT operates as a common emitter amplifier with the transconductance of the MOSFET providing emitter degeneration. The signal gains of such source follower and common emitter amplifiers are substantially equal and of opposite polarities. Therefore, any common mode signal components due to common mode input signals present at the input terminals (i.e., the BJT base and MOSFET gate terminals) which would otherwise appear within the output signal are substantially cancelled, thereby resulting in a high degree of common mode signal rejection.
摘要翻译：具有高共模信号抑制的电荷敏感放大器包括连接在图腾柱电路配置中的NPN双极结晶体管（BJT）和P沟道金属氧化物半导体场效应晶体管（MOSFET）。 BJT基极端子接收直流参考电压，MOSFET栅极端子接收输入数据信号，MOSFET漏极端子接地，BJT集电极端子提供输出电压信号，并由电源通过电阻电路元件偏置。 MOSFET作为源极跟随器放大器，BJT的跨导用作源极端子的负载，而BJT作为公共发射极放大器工作，MOSFET的跨导提供发射极退化。这种源极跟随器和公共发射极放大器的信号增益基本相等并具有相反的极性。因此，由于存在于输出端子（即，BJT基极和MOSFET栅极端子）处的共模输入信号的任何共模信号分量基本上被消除，从而导致高度的共模信号抑制

54. 发明申请

WO1998024092A1 PIPELINED SAMPLE AND HOLD CIRCUIT WITH CORRELATED DOUBLE SAMPLING 审中-公开
标题翻译：管路采样和保持电路与相关的双重采样
公开(公告)号：WO1998024092A1
公开(公告)日：1998-06-04
申请号：PCT/US1997021164
申请日：1997-11-19
申请人： VARIAN ASSOCIATES, INC.
发明人： VARIAN ASSOCIATES, INC. , MALLINSON, Martin , ALLEN, Max, J. , COLBETH, Richard, E.
IPC分类号： G11C27/02
CPC分类号： G11C27/026
摘要： A signal sampling circuit for performing correlated double sampling (CDS) of an input signal with a pipelined sample and hold architecture includes a time multiplexed integrating amplifier circuit in which the output circuit is a pipelined sample and hold circuit which provides time multiplexed input signal samples and the feedback integration capacitor is discharged between samples. At all times, one of the channels of the pipelined sample and hold circuit is providing one of the time multiplexed input signal samples while the other channel continues tracking the input signal. The feedback integration capacitor acts as a clamp to null out residual reset noise received as part of the input signal to be sampled. Hence, with the exception of that very brief period of time necessary for switching between the two pipelined sample and hold circuit channels, one of the two pipelined sample and hold circuit channels is always available for signal acquisition.
摘要翻译：一种用于执行具有流水线采样和保持架构的输入信号的相关双采样（CDS）的信号采样电路包括时间复用积分放大器电路，其中输出电路是提供时间复用输入信号样本的流水线采样和保持电路，反馈积分电容器在采样之间放电。在任何时候，流水线采样和保持电路的一个通道是提供时间复用输入信号采样之一，而另一个通道继续跟踪输入信号。反馈积分电容器用作钳位，以将作为要采样的输入信号的一部分接收的残留复位噪声清零。因此，除了在两个流水线采样和保持电路通道之间切换所需的非常短暂的时间段之外，两个流水线采样和保持电路通道之一总是可用于信号采集。

55. 发明申请

WO1998011592A1 X-RAY TARGET HAVING HIGH Z PARTICLES IMBEDDED IN A MATRIX 审中-公开
标题翻译：具有基质中的高Z颗粒的X射线目标
公开(公告)号：WO1998011592A1
公开(公告)日：1998-03-19
申请号：PCT/US1997015926
申请日：1997-09-09
申请人： VARIAN ASSOCIATES, INC.
发明人： VARIAN ASSOCIATES, INC. , VIRSHUP, Gary, Fedric , REYNOLDS, Jeremy, Glyn
IPC分类号： H01J35/08
CPC分类号： H01J35/108
摘要： A rotating anode X-ray target has a matrix structure such as a carbon-carbon matrix and a high Z material imbedded inside this matrix structure. The high Z material may be a refractory metal with atomic number at least 72, its alloy or carbide and may be imbedded in the matrix either as discrete particles or as a non-discrete layer. Such a target can be made by any of a number of known methods such as chemical vapor deposition and chemical vapor infiltration. Without a TZM layer or a braze required for holding together an X-ray-producing surface layer and a carbon heat storage material, the target can be made lighter and can be operated at higher temperatures.
摘要翻译：旋转阳极X射线靶具有嵌入在该矩阵结构内的碳 - 碳基体和高Z材料等基体结构。高Z材料可以是原子序数至少为72的难熔金属，其合金或碳化物可以作为离散颗粒或作为非离散层嵌入基质中。这样的靶可以通过诸如化学气相沉积和化学气相渗透等已知方法中的任何一种来制造。没有用于将X射线产生表面层和碳储热材料保持在一起所需的TZM层或钎焊料，可以使目标物更轻并且可以在较高温度下操作。

56. 发明申请

WO1998003884A1 X-RAY IMAGING APPARATUS AND METHOD USING A FLAT AMORPHOUS SILICON IMAGING PANEL 审中-公开
标题翻译： X射线成像装置和使用平面非晶硅成像面板的方法
公开(公告)号：WO1998003884A1
公开(公告)日：1998-01-29
申请号：PCT/US1997011497
申请日：1997-06-30
申请人： VARIAN ASSOCIATES, INC.
发明人： VARIAN ASSOCIATES, INC. , GILBLOM, David, L.
IPC分类号： G01T01/24
CPC分类号： A61B6/542 , A61B6/00 , A61B6/4233 , G01T1/023 , G01T1/026 , G01T1/2018 , H05G1/26 , H05G1/44
摘要： An x-ray imaging apparatus receives an image-carrying x-ray beam (12) on a flat amorphous silicon imaging panel (20) with a light detector unit (40) disposed behind. The imaging panel is of a multilayered structure having sequentially a light-blocking layer (26) which is opaque to visible light but transmissive to x-rays, a converting layer of a phosphorescent material (98) for converting x-rays incident thereon into visible light, and a two-dimensional array of photosensitive elements (30) of an amorphous semiconductor material such as amorphous silicon, adapted to undergo a detectable change in electrical characteristic in response to impingement of light. The light detector unit (40) may be a simple light detector for receiving the light emitted from the converting layer and passed through regions between neighboring pairs of the array of photosensitive elements (30). Since the energy of light thus detected is directly proportional to the total light energy emitted from the converting layer, the output signal from such a light detector unit can be conveniently used for the exposure control of the imaging panel.
摘要翻译： x射线成像装置在平坦的非晶硅成像面板（20）上接收具有放置在后面的光检测器单元（40）的载像X射线束（12）。成像面板具有多层结构，其顺序地具有对可见光不透明但对X射线透射的阻光层（26），磷光发光材料（98）的转换层用于将入射到其上的X射线转换为可见光光以及诸如非晶硅的非晶半导体材料的光敏元件（30）的二维阵列，其适于响应于光的撞击而经受可检测的电特性变化。光检测器单元（40）可以是简单的光检测器，用于接收从转换层发射的光并通过感光元件阵列（30）的相邻对之间的区域。由于这样检测到的光的能量与从转换层发射的总光能成正比，所以来自这种光检测器单元的输出信号可以方便地用于成像面板的曝光控制。

57. 发明申请

WO1997011763A1 SOLID PHASE MICROEXTRACTION WITH VIBRATION 审中-公开
标题翻译：具有振动的固相微型放电
公开(公告)号：WO1997011763A1
公开(公告)日：1997-04-03
申请号：PCT/US1996015308
申请日：1996-09-25
申请人： VARIAN ASSOCIATES, INC.
发明人： VARIAN ASSOCIATES, INC. , KOEHLER, Wulf, Hinrich , GEPPERT, Helmut, Gunther-Heinz
IPC分类号： B01D11/00
CPC分类号： G01N1/405 , B01D61/00 , B01D61/18 , B01D63/16 , G01N2030/009 , G01N2030/062
摘要： Solid phase microextraction and analysis of analytes in a fluid carrier is carried out within a housing (62) in which a fiber (46) is vibrated during microextraction. The housing (62) contains access device so that the carrier and analytes can be brought into contact with the vibrating fiber (46) during the extraction stage. In a preferred embodiment of the present invention, the vibrating device comprises a membrane (32), a solenoid for vibrating the membrane (32), a frame, a retainer mounted on the frame for holding the solenoid, a holder (34) for the membrane (32), and a retainer arm (36) having one end connected to the retainer and the other end attached to the holder (34).
摘要翻译：液体载体中的分析物的固相微萃取和分析在其中纤维（46）在微萃取期间振动的壳体（62）内进行。壳体（62）包含进入装置，使得载体和分析物可以在提取阶段与振动纤维（46）接触。在本发明的优选实施例中，振动装置包括膜（32），用于振动膜（32）的螺线管，框架，安装在框架上用于保持螺线管的保持器，用于膜（32）和保持臂（36），其一端连接到保持器，另一端连接到保持器（34）。

58. 发明申请

WO1996034404A1 HIGH OUTPUT STATIONARY X-RAY TARGET WITH FLEXIBLE SUPPORT STRUCTURE 审中-公开
标题翻译：高输出静止X射线目标具有灵活的支撑结构
公开(公告)号：WO1996034404A1
公开(公告)日：1996-10-31
申请号：PCT/IB1996000438
申请日：1996-04-16
申请人： VARIAN ASSOCIATES, INC.
发明人： VARIAN ASSOCIATES, INC. , JENSEN, David, K.
IPC分类号： H01J35/10
CPC分类号： H01J35/08 , H01J2235/1204 , H01J2235/1262
摘要： A stationary target anode (10) of an X-ray device is provided, having stepped high Z button (20). By minimizing the diameter (27) of the central, X-ray producing section of the button (20), and incorporating a thin lip (40) extending therefrom to a diameter approximately twice that of the central portion, internal and interface stresses are minimized. A flexible structure is also provided to support the button/substrate assembly and provide minimal resistance as the substrate radially expands during heating, thereby minimizing induced stress on the target and preventing fatigue and failure of the support target.
摘要翻译：提供了具有阶梯式高Z按钮（20）的X射线装置的固定目标阳极（10）。通过使按钮（20）的中心X射线产生部分的直径（27）最小化，并且将从其延伸的薄唇缘（40）结合到中心部分的直径的大约两倍，内部和界面应力被最小化。还提供柔性结构以支撑按钮/基底组件，并且在加热期间衬底径向膨胀时提供最小的阻力，从而最小化目标上的诱发应力并防止支撑目标的疲劳和故障。

59. 发明申请

WO1995019039A1 X-RAY TUBE HAVING ROTARY ANODE COOLED WITH HIGH THERMAL CONDUCTIVITY FLUID 审中-公开
标题翻译：具有高导热性流体冷却的旋转阳极的X射线管
公开(公告)号：WO1995019039A1
公开(公告)日：1995-07-13
申请号：PCT/US1995000059
申请日：1995-01-09
申请人： VARIAN ASSOCIATES, INC.
发明人： VARIAN ASSOCIATES, INC. , ANDERSON, Wetson, A. , ARNOLD, James, T. , LAVERING, Gordon, R. , DUFFIELD, Jack, J.
IPC分类号： H01J35/10
CPC分类号： H01J35/106 , H01J2235/1204 , H01J2235/1279 , H05G1/025 , H05G1/04
摘要： An X-ray tube rotating anode (14) is cooled with a liquid metal (40) functioning as a recirculated heat exchange fluid and/or a metal film in a gap (39) between the anode (14) and a stationary structure. The liquid metal (40) is confined to the gap (39) by (a) a labyrinth (44 or 46) having a coating that is not wetted by the liquid, (b) a magnetic structure (22), or (c) a wick (38). The liquid metal (40) recirculated through the anode (14) is cooled in a heat exchanger located either outside the tube or in the tube so it is surrounded by the anode (14). The heat exchanger in the tube includes a mass of metal in thermal contact with the recirculating liquid metal and including numerous passages (36) for a cooling fluid, e.g. water. A high thermal conductivity path (26, 48, 49) is provided between an anode region (16) bombarded by electrons and a central region of the tube where heat is extracted. In one embodiment the high thermal conductivity is achieved by stacked pyrolytic structures having crystalline axes arranged so there is high heat conductivity radially of the region and lower thermal heat conductivity normal to the high heat conductivity direction.
摘要翻译： X射线管旋转阳极（14）用位于阳极（14）和固定结构之间的间隙（39）中作为循环热交换流体和/或金属膜起作用的液体金属（40）进行冷却。液体金属（40）通过（a）具有不被液体润湿的涂层的迷宫（44或46），（b）磁性结构（22）或（c）被限制在间隙（39）一个灯芯（38）。通过阳极（14）再循环的液态金属（40）在位于管外部或管内的热交换器中冷却，使其被阳极（14）包围。管中的热交换器包括与再循环液体金属热接触的金属块，并且包括用于冷却流体的许多通道（36），例如，水。在由电子轰击的阳极区域（16）和提取热量的管的中心区域之间提供高热导率路径（26,48,49）。在一个实施方案中，通过堆叠的热解结构实现了高热导率，其具有排列的晶轴，因此在该区域内径向具有高热传导性，并且较低的导热方向的热传导率较低。

60. 发明申请

WO1994011944A1 ELECTROSTATIC WAFER CLAMP 审中-公开
标题翻译：静电防水夹
公开(公告)号：WO1994011944A1
公开(公告)日：1994-05-26
申请号：PCT/US1993010502
申请日：1993-11-01
申请人： VARIAN ASSOCIATES, INC.
发明人： VARIAN ASSOCIATES, INC. , FRUTIGER, A., William
IPC分类号： H02N13/00
CPC分类号： H02N13/00 , H01L21/6831 , H01L21/6833
摘要： Apparatus for electrostatic clamping of a semiconductor wafer (12). In a first embodiment, the apparatus includes an electrically conductive platen (110), a resilient, thermally-conductive dielectric layer (14) affixed to the platen (12) and one or more conductive wires (20, 22, 24) positioned on the clamping surface (18). In a second embodiment, a three-phase wafer clamping apparatus includes a platen (90) divided into three electrically isolated sections (92, 94, 96). One phase of a three-phase clamping voltage is connected to each of the platen sections (92, 94, 96). In a third embodiment, a six phase wafer clamping apparatus includes a platen (200) having six symmetrically located electrodes (210, 212, 214, 216, 218, 220). Voltages with six different phases are applied to the electrodes (210, 212, 214, 216, 218, 220) with the voltages applied to electrodes on opposite sides of the platen being one-half cycle out of phase. The applied voltages are preferably bipolar square waves.
摘要翻译：用于半导体晶片（12）的静电夹持的装置。在第一实施例中，该装置包括导电压板（110），固定到压板（12）的弹性导热介电层（14）和位于该压板上的一个或多个导线（20,22,24）夹紧表面（18）。在第二实施例中，三相晶片夹紧装置包括被分成三个电隔离部分（92,94,96）的压板（90）。三相钳位电压的一相连接到每个压板部分（92,94,96）。在第三实施例中，六相晶片夹紧装置包括具有六个对称定位的电极（210,212,214,216,218,220）的压板（200）。具有六个不同相位的电压被施加到电极（210,212,214,216,218,220），其中施加到压板的相对侧上的电极的电压异相二个周期。所施加的电压优选为双极方波。

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