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    • 73. 发明申请
    • Mixed domain cancellation
    • 混合域名取消
    • US20060062166A1
    • 2006-03-23
    • US11273347
    • 2005-11-14
    • William JonesGeorge ZimmermanChristopher Pagnanelli
    • William JonesGeorge ZimmermanChristopher Pagnanelli
    • H04B3/20
    • H04B3/32
    • A method and apparatus for reducing crosstalk in a multi-channel communication system is disclosed. In one embodiment, outgoing signals in a multi-channel environment are manipulated into a transform domain, such as the frequency domain. Thereafter, the signals may be combined and modified based on a weighting variable to create a cancellation signal. Combined processing greatly reduces system complexity and increases processing speed. After processing in the transform domain, the cancellation signal undergoes further processing to return the cancellation signal into the time domain. The cancellation signal may then be combined with received signals to cancel crosstalk or echo. A method and apparatus for crosstalk cancellation in the analog domain and digital domain are also disclosed. Cancellation at least partially in the analog domain reduces the dynamic range requirements for digital to analog converters within the front-end processing system of a receiver and thereby reduces clipping and increases operating speed.
    • 公开了一种用于减少多声道通信系统中的串扰的方法和装置。 在一个实施例中,多信道环境中的输出信号被操纵成变换域,例如频域。 此后,可以基于加权变量组合和修改信号以产生消除信号。 组合处理大大降低了系统复杂度并提高了处理速度。 在变换域中处理之后,消除信号进行进一步的处理,以将取消信号返回到时域。 然后可以将消除信号与接收的信号组合以消除串扰或回波。 还公开了在模拟域和数字域中用于串扰消除的方法和装置。 至少部分地在模拟域中的取消减少了接收机的前端处理系统内的数模转换器的动态范围要求,从而减少了削波并提高了操作速度。
    • 76. 发明申请
    • Nearest-neighbor rebinning in clinical PET using on-line three dimensional LOR-to-bin mapping
    • 使用在线三维LOR到bin映射的临床PET中最近邻重新重组
    • US20050253075A1
    • 2005-11-17
    • US11130632
    • 2005-05-16
    • William JonesJohn BreedingBryan CastleberryJohnny Reed
    • William JonesJohn BreedingBryan CastleberryJohnny Reed
    • G01T1/164G01T1/29
    • G01T1/2985A61B6/037
    • A projection data rebinning device for nearest-neighbor rebinning in Positron Emission Tomography (PET) using on-line 3D axial LOR-to-bin mapping. The PETLINK™ DMA Rebinner (PDR) of the present invention includes a PCI card for on-line translation of detector-pair event packets into bin-address packets. The PDR delivers accurate axial and transaxial LOR nearest-neighbor rebinning and enables the more oblique LOR to be mapped into the proper sinogram bins. The PDR is used in association with hardware architecture in electrical communication with a medical imaging device. The data acquisition architecture includes a processor, random access memory (RAM), an operating system, and a data storage device. The PDR includes a plurality of FPGAs and flash chips. The FPGAs are in communication with each other via a high-bandwidth connection. The flash memory chips are used for look-up tables. The PDR performs on-line translation of detector-pair event packets into bin-address packets.
    • 一种投影数据重组装置,用于在正电子发射断层扫描(PET)中使用在线三维轴向LOR到箱体映射进行最近邻重组。 本发明的PETLINK TM DMA Rebinner(PDR)包括用于将检测器对事件分组在线转换成bin-地址分组的PCI卡。 PDR提供精确的轴向和横轴LOR最近邻重组,并使更多的倾斜LOR映射到正确的正弦图形箱。 PDR与与医学成像设备电通信的硬件结构相关联使用。 数据采集​​架构包括处理器,随机存取存储器(RAM),操作系统和数据存储设备。 PDR包括多个FPGA和闪存芯片。 FPGA通过高带宽连接彼此通信。 闪存芯片用于查找表。 PDR将检测器对事件数据包进行在线转换,进入bin-address数据包。
    • 79. 发明申请
    • Pump design for circulating supercritical carbon dioxide
    • 循环超临界二氧化碳的泵设计
    • US20050112003A1
    • 2005-05-26
    • US10718964
    • 2003-11-21
    • William JonesBryan SeegersHugh Spilsbury
    • William JonesBryan SeegersHugh Spilsbury
    • F04B15/08F04D7/02F04D13/06F04D29/02F04B17/00F04B35/04
    • F04B15/08F04D7/02F04D13/0633F04D13/064F04D29/026F05D2300/2283F05D2300/436
    • In accordance with an embodiment of the present invention, a pump assembly for circulating a supercritical fluid is disclosed. The pump assembly comprises an impeller for pumping fluid between a pump inlet and a pump outlet; a rotating pump shaft coupled to the impeller, wherein the pump shaft is supported by corrosion resistant bearings; a rotor of a DC motor potted in epoxy and encased in a non-magnetic material sleeve; and a stator sealed from the fluid via a polymer sleeve. The pump can be of centrifugal type. The bearings can be made of silicon nitride balls combined with bearing races made of Cronidur® and can operate without oil or grease lubrication. The polymer sleeve can be a PEEK™ sleeve which forms a casing for the stator. The non-magnetic material sleeve encasing the rotor of the DC motor is preferably made of stainless steel. A portion of the fluid passing through the pump assembly can be diverted over the bearings and/or the rotor and stator.
    • 根据本发明的实施例,公开了一种用于循环超临界流体的泵组件。 泵组件包括用于在泵入口和泵出口之间泵送流体的叶轮; 联接到叶轮的旋转泵轴,其中泵轴由耐腐蚀轴承支撑; 直流电动机的转子,以环氧树脂封装并封装在非磁性材料套筒中; 以及通过聚合物套筒与流体密封的定子。 泵可以是离心式的。 轴承可以由与Cronidur(R)制成的轴承座组合的氮化硅球制成,并可在无油脂润滑的情况下运行。 聚合物套管可以是形成用于定子的壳体的PEEK TM套筒。 封装DC电机的转子的非磁性材料套筒最好由不锈钢制成。 通过泵组件的流体的一部分可以转过轴承和/或转子和定子。
    • 80. 发明申请
    • Brushless repulsion motor speed control system
    • 无刷斥力电机调速系统
    • US20050093504A1
    • 2005-05-05
    • US10977268
    • 2004-10-29
    • William Jones
    • William Jones
    • H02P25/10H02P1/24
    • H02P25/102
    • A system for controlling the speed of a brushless repulsion motor having a series of switches mounted on a rotating armature for shorting circumferentially spaced armature coils comprising first stationary signaling means and a plurality of rotating detectors for activating said switches; second stationary signaling means for speed control; a plurality of markers on the rotating armature; a speed detector for detecting the speed of the rotating markers and generating a speed feedback signal; means for generating a speed command signal; an error calculator for comparing the speed feedback and speed command signals and generating an error signal; and a controller for controlling the signaling means based on the error signal.
    • 一种用于控制无刷排斥电动机的速度的系统,其具有安装在旋转电枢上的一系列开关,用于短路周向间隔的电枢线圈,其包括第一固定信号装置和用于启动所述开关的多个旋转检测器; 用于速度控制的第二固定信号装置; 旋转电枢上的多个标记; 速度检测器,用于检测旋转标记的速度并产生速度反馈信号; 用于产生速度指令信号的装置; 误差计算器,用于比较速度反馈和速度指令信号并产生误差信号; 以及控制器,用于基于所述误差信号来控制所述信令装置。