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248 条记录 (耗时 0.053 秒)

    Data receiver including a transconductance amplifier
    51.
    发明申请
    Data receiver including a transconductance amplifier 有权
    数据接收机包括跨导放大器

    公开(公告)号：US20060215787A1

    公开(公告)日：2006-09-28

    申请号：US11091227

    申请日：2005-03-28

    申请人： Zuoguo Wu ,  Feng Chen

    发明人： Zuoguo Wu ,  Feng Chen

    IPC分类号： H04L27/00

    CPC分类号： H04L27/0002 ,  H03F3/45183 ,  H03F3/45968

    摘要： According to one embodiment, a system, apparatus, and method for receiving high-speed signals using a receiver with a transconductance amplifier is presented. The apparatus comprises a transconductance amplifier to receive input voltage derived from an input signal, a clocked current comparator to receive output current from the transconductance amplifier, and a storage element to receive a binary value from the clocked current comparator.

    摘要翻译： 根据一个实施例，提出了一种使用具有跨导放大器的接收机来接收高速信号的系统，装置和方法。 该装置包括跨导放大器以接收从输入信号导出的输入电压，时钟电流比较器以接收来自跨导放大器的输出电流，以及存储元件以从时钟电流比较器接收二进制值。

    3D Fingerprint and palm print data model and capture devices using multi structured lights and cameras
    52.
    发明申请
    3D Fingerprint and palm print data model and capture devices using multi structured lights and cameras 失效
    3D指纹和掌纹数据模型，并采用多结构化的照明和摄像头捕获设备

    公开(公告)号：US20060120576A1

    公开(公告)日：2006-06-08

    申请号：US11269312

    申请日：2005-11-08

    申请人： Feng Chen

    发明人： Feng Chen

    IPC分类号： G06K9/00

    CPC分类号： G06K9/00 ,  G06K9/00033 ,  G06K9/2036

    摘要： A method and system for biometric identification utilizes structured light (e.g., fine grid) that is projected to the target objects (fingers and palm). The image with structured light on the object contours can give 3D information of the objects with resolution to satisfy NIST fingerprint standard. In embodiments, the structured light can be of different color, to reduce the burden of the software processing. To enhance the capture speed, a model with 2D image on “smooth” 3D surface can be used. In this “2.5-D” case, the finest feature of the structured light can be as big as millimeter size. Although grid-structured light can satisfy current requirement of fingerprint and palm print capture standards, in other embodiments, a customized structure based on the initial scan result can give optimal result on the 3D data. This may be useful when higher resolution is desired.

    摘要翻译： 用于生物识别的方法和系统利用投射到目标对象（手指和手掌）的结构光（例如细网格）。 对象轮廓上的结构光图像可以给出具有分辨率的对象的3D信息，以满足NIST指纹标准。 在实施例中，结构化光可以具有不同的颜色，以减少软件处理的负担。 为了提高拍摄速度，可以使用“平滑”3D表面上的2D图像模型。 在这种“2.5-D”的情况下，结构光的最好的特征可以是毫米的大小。 虽然栅格结构的光可以满足指纹和掌纹捕获标准的当前要求，但在其他实施例中，基于初始扫描结果的定制结构可以在3D数据上给出最佳结果。 当需要更高分辨率时，这可能是有用的。

    Sigma-delta (ΣΔ) analog-to-digital converter (ADC) structure incorporating a direct sampling mixer
    53.
    发明授权
    Sigma-delta (ΣΔ) analog-to-digital converter (ADC) structure incorporating a direct sampling mixer 有权
    结合直接采样混频器的Sigma-delta（SigmaDelta）模数转换器（ADC）结构

    公开(公告)号：US07057540B2

    公开(公告)日：2006-06-06

    申请号：US10273217

    申请日：2002-10-17

    申请人： Khurram Muhammad ,  Robert B. Staszewski ,  Feng Chen ,  Dirk Leipold

    发明人： Khurram Muhammad ,  Robert B. Staszewski ,  Feng Chen ,  Dirk Leipold

    IPC分类号： H03M3/00

    CPC分类号： H03M3/47 ,  H03M3/496 ,  H04B1/1036

    摘要： A sigma-delta analog-to-digital converter-offers advantages such as noise shaping and high frequency operation. However, a sampling circuit needed to provide a highly oversampled discrete-time sample stream with low noise characteristics is difficult to design and implement. The present invention provides a sigma-delta mixer 300 with such a sampling circuit 310. The present invention discloses a sampling circuit using switched capacitors 307, 308, and 309 with low noise characteristics and at the same time is capable of providing a highly oversampled discrete-time sample stream.

    摘要翻译： Σ-Δ模数转换器 - 具有噪声整形和高频操作等优点。 然而，需要提供具有低噪声特性的高度过采样离散时间采样流所需的采样电路难以设计和实现。 本发明提供了具有这种采样电路310的Σ-Δ混合器300。 本发明公开了一种使用具有低噪声特性的开关电容器307,308和309的采样电路，同时能够提供高度过采样的离散时间采样流。

    Sigma-delta modulator with passive bandpass loop filter
    54.
    发明授权
    Sigma-delta modulator with passive bandpass loop filter 有权
    带无源带通环路滤波器的Σ-Δ调制器

    公开(公告)号：US07006023B2

    公开(公告)日：2006-02-28

    申请号：US10661019

    申请日：2003-09-12

    申请人： Feng Chen

    发明人： Feng Chen

    IPC分类号： H03M3/00

    CPC分类号： H03M3/404 ,  H03M3/43 ,  H03M3/456 ,  H03M3/47

    摘要： Digitizing a signal includes sampling and holding an analog signal to yield a sampled signal, where the analog signal includes information. The sampled signal is filtered at a passive filter circuit to yield a filtered signal. The passive filter circuit includes at least one passive element and the filtered signal is characterized by a bandpass response. The filtered signal is quantized to yield a digital signal, where the digital signal corresponds to the analog signal and the digital signal includes the information.

    摘要翻译： 数字化信号包括采样和保持模拟信号以产生采样信号，其中模拟信号包括信息。 采样信号在无源滤波器电路进行滤波以产生滤波信号。 无源滤波器电路包括至少一个无源元件，滤波后的信号的特征在于带通响应。 经滤波的信号被量化以产生数字信号，其中数字信号对应于模拟信号，并且数字信号包括信息。

    Polishing apparatus and method for forming an integrated circuit
    55.
    发明授权
    Polishing apparatus and method for forming an integrated circuit 有权
    抛光装置和形成集成电路的方法

    公开(公告)号：US06964598B1

    公开(公告)日：2005-11-15

    申请号：US09904828

    申请日：2001-07-12

    申请人： Lup San Leong ,  Feng Chen ,  Charles Lin

    发明人： Lup San Leong ,  Feng Chen ,  Charles Lin

    IPC分类号： B24B37/04 ,  H01L21/3105 ,  H01L21/321 ,  B24B49/00 ,  B24B51/00

    CPC分类号： B24B37/042 ,  B24B37/20 ,  H01L21/31053 ,  H01L21/3212

    摘要： In one embodiment, a semiconductor substrate (38) is uniformly polished using a polishing pad (16) that has a first polishing region (26), a second polishing region (28), and a third polishing region (30). The semiconductor substrate (38) is aligned to the polishing pad (16), such that the center of the semiconductor substrate (38) overlies the second polishing region (28), and the edge of the semiconductor substrate overlies the first polishing region (26) and the third polishing region (30). During polishing, the semiconductor substrate (38) is not radially oscillated over the surface of the polishing pad, and as a result a more uniform polishing rate is achieved across the semiconductor substrate (38). This allows the semiconductor substrate (38) to be uniformly polished from center to edge, and increases die yield because die located on the semiconductor substrate (38) are not over polished.

    摘要翻译： 在一个实施例中，使用具有第一抛光区域（26），第二抛光区域（28）和第三抛光区域（30）的抛光垫（16）均匀地抛光半导体衬底（38）。 半导体衬底（38）与抛光垫（16）对准，使得半导体衬底（38）的中心覆盖在第二抛光区域（28）上，并且半导体衬底的边缘覆盖在第一抛光区域（26） ）和第三抛光区域（30）。 在抛光期间，半导体衬底（38）不在抛光垫的表面上径向摆动，结果在半导体衬底（38）上实现了更均匀的抛光速率。 这允许半导体衬底（38）从中心到边缘被均匀抛光，并且由于位于半导体衬底（38）上的裸芯未被抛光，所以提高了裸片的产量。

    Vetiver oil extracts as termite repellent and toxicant
    56.
    发明授权
    Vetiver oil extracts as termite repellent and toxicant 有权
    香根草油提取物为白蚁驱避剂和毒物

    公开(公告)号：US06890960B1

    公开(公告)日：2005-05-10

    申请号：US09856760

    申请日：2000-10-18

    申请人： Gregg Henderson ,  Roger A. Laine ,  Donald O. Heumann ,  Feng Chen ,  Betty C. R. Zhu

    发明人： Gregg Henderson ,  Roger A. Laine ,  Donald O. Heumann ,  Feng Chen ,  Betty C. R. Zhu

    IPC分类号： A01N31/00 ,  A01N31/06 ,  A01N35/00 ,  A01N35/06

    CPC分类号： A01N31/06 ,  A01N35/06 ,  A01N27/00 ,  A01N25/08 ,  A01N2300/00

    摘要： Extracts of vetiver oil were found to significantly repel termites. In one extract, nootkatone was isolated and found to be a significant repellent and toxicant of termites. Nootkatone significantly decreased food consumption, decreased tunneling behavior, and increased mortality in termites. Nootkatone is an effective repellent and toxicant of termites either by itself or as an addition to other materials or substrates, including mulches made from vetiver grass roots or other wood products. Nootkatone can also be used to protect construction wood from attack by Formosan subterranean termites. Nootkatone as a repellent is non-toxic to humans and other mammals and is environmentally safe. In addition, α-cedrene was found to be a weak termite repellent; and both zizanol and bicyclovetivenol were found to be repellents and toxicants of termites.

    摘要翻译： 发现香根草油的提取物显着排斥白蚁。 在一种提取物中，分离出诺塔卡酮，发现它是一种重要的驱避剂和有毒的白蚁。 Nootkatone显着降低了食物消耗，降低了隧道行为，并增加了白蚁死亡率。 Nootkatone是一种有效的驱虫剂和有毒物质的白蚁，其本身或作为其他材料或底物的添加剂，包括由香根草草根或其他木制品制成的覆盖物。 Nootkatone也可用于保护建筑木材免受台山地下白蚁的攻击。 Nootkatone作为驱避剂对人类和其他哺乳动物无毒，对环境无害。 此外，发现α-雪松是一种弱白蚁驱虫剂; 发现齐赞醇和双环己酮醇都是白蚁的驱避剂和毒物。

    Method of inducing the formation of neurofibrillary tangles in transgenic animals
    58.
    发明申请
    Method of inducing the formation of neurofibrillary tangles in transgenic animals 审中-公开
    诱导转基因动物神经原纤维缠结形成的方法

    公开(公告)号：US20050015819A1

    公开(公告)日：2005-01-20

    申请号：US10487546

    申请日：2002-08-24

    申请人： Jurgen Gotz ,  Roger Nitsch ,  Feng Chen

    发明人： Jurgen Gotz ,  Roger Nitsch ,  Feng Chen

    IPC分类号： A01K67/027 ,  C07K14/47 ,  C12N15/09 ,  C12N15/85 ,  C12N15/00

    CPC分类号： C07K14/4711 ,  A01K67/0275 ,  A01K67/0278 ,  A01K2207/15 ,  A01K2217/00 ,  A01K2217/05 ,  A01K2227/105 ,  A01K2267/0312 ,  A01K2267/0318 ,  C12N15/8509

    摘要： The present invention discloses a method and an in-vivo assay system useful for the identification and testing of modulating agents as well as for the validation of therapies of neurodegenerative diseases associated with the formation of neurofibrillary tangles, in particular Alzheimer's disease. The present invention is based on the surprising finding that injection of β-amyloid Aβ42 fibrils into brains of P301L mutant tau transgenic mice caused several-fold increases in the numbers and an accelerated production of neurofibrillary tangles in cell bodies predominantly within the amygdala. The induced neurofibrillary tangles occurred as early as 18 days after Aβ42 injections and displayed striking features of neurofibrillary tangles of several human neurodegenerative diseases, particularly Alzheimer's disease.

    摘要翻译： 本发明公开了一种可用于鉴定和测试调节剂的方法和体内测定系统，以及用于验证与形成神经原纤维缠结，特别是阿尔茨海默病有关的神经变性疾病的疗法。 本发明基于惊人的发现，即将β-淀粉状蛋白Aβ42原纤维注射到P301L突变体tau转基因小鼠的脑中，导致数量增加了数倍，并且主要在杏仁核内的细胞体中加速了神经原纤维缠结的产生。 诱导的神经原纤维缠结发生早于Abeta42注射后18天，并显示出几种人类神经变性疾病，特别是阿尔茨海默病的神经原纤维缠结的显着特征。

    Differential, low voltage swing reducer
    59.
    发明授权
    Differential, low voltage swing reducer 失效
    差动，低压摆动减速机

    公开(公告)号：US06732136B1

    公开(公告)日：2004-05-04

    申请号：US09471201

    申请日：1999-12-23

    申请人： Feng Chen ,  Thomas Fletcher ,  Shahram Jamshidi

    发明人： Feng Chen ,  Thomas Fletcher ,  Shahram Jamshidi

    IPC分类号： G06F750

    CPC分类号： G06F7/607

    摘要： A small swing reducer circuit. An apparatus includes a first number of input terminals including at least two input terminals coupled to receive a differential small swing signal and a reducer circuit to generate differential, small swing sum and carry output signals based on data received via the input terminals.

    摘要翻译： 小摆动减速电路。 一种装置包括：第一数量的输入端子，包括耦合以接收差分小摆动信号的至少两个输入端子;以及还原电路，用于根据经由输入端子接收到的数据产生微分，小摆幅和输入输出信号。

    Process for the separation of sugars
    60.
    发明授权
    Process for the separation of sugars 有权
    糖的分离过程

    公开(公告)号：US06451123B1

    公开(公告)日：2002-09-17

    申请号：US09481732

    申请日：2000-01-11

    申请人： Michael Saska ,  Feng Chen

    发明人： Michael Saska ,  Feng Chen

    IPC分类号： B01D1508

    CPC分类号： B01D15/185 ,  B01J41/05 ,  B01J41/20

    摘要： Improved separations of xylose, mannose, galactose, arabinose, glucose, xylitol, arabitol; sorbitol, galactitol, or mannitol (and other monosaccharides and sugar alcohols) from other sugars and sugar alcohols may be achieved by chromatography over hydroxyl-form anion exchange surfaces prepared from anion exchange resins at relatively low hydroxyl concentrations. When a strong base anion exchange resin, such as a chloride-form strong base anion exchange resin, is conditioned with a low concentration of hydroxyl (for example, an NaOH solution with a concentration between 0.1 and 1000 mM, most preferably between 1 and 10 mM), the conditioned resin separates a number of sugars and sugar alcohols from one another, while still allowing ready desorption from the resin.

    摘要翻译： 木糖，甘露糖，半乳糖，阿拉伯糖，葡萄糖，木糖醇，阿糖醇的改进分离; 来自其它糖和糖醇的山梨糖醇，半乳糖醇或甘露醇（和其它单糖和糖醇）可以通过在相对低的羟基浓度下由阴离子交换树脂制备的羟基形式的阴离子交换表面进行层析来实现。 当强碱性阴离子交换树脂（如氯化物形式的强碱阴离子交换树脂）用低浓度的羟基调节（例如浓度为0.1至1000mM的NaOH溶液，最优选1至10 mM）时，调节的树脂将许多糖和糖醇彼此分离，同时仍允许从树脂中解吸。