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    Method and apparatus for discrete mesh filleting and rounding through ball pivoting
    3.
    发明授权
    Method and apparatus for discrete mesh filleting and rounding through ball pivoting 失效
    用于离散网格切割和通过球枢轴倒圆的方法和装置

    公开(公告)号：US07623127B2

    公开(公告)日：2009-11-24

    申请号：US11466211

    申请日：2006-08-22

    申请人： Hui Xie ,  Jin Zhou ,  Gregory G. Slabaugh ,  Gozde Unal ,  Tong Fang

    发明人： Hui Xie ,  Jin Zhou ,  Gregory G. Slabaugh ,  Gozde Unal ,  Tong Fang

    IPC分类号： G06T15/00 ,  G06T17/00 ,  G09G5/00

    CPC分类号： G06T17/20

    摘要： A method and apparatus for rounding a sharp edge of a model of an object is disclosed whereby a ball is propagated in a desired direction along the edge to be smoothed. The position of the ball at each point in its propagation is noted and, as a result, a virtual tunnel through which the ball passed may be constructed. Points on the sides of the surface of the object in proximity to the sharp edge are then projected onto the virtual tunnel by connecting with a line each point in proximity to the sharp edge to the center of the tunnel. New projected points are created at each position on the surface of the tunnel where the lines intersect that surface. The original points along the sharp edge are then hidden or deleted and the points along the virtual tunnel are connected via well-known surface reconstruction methods. In this way, a sharp edge of a triangle mesh model are advantageously smoothed.

    摘要翻译： 公开了一种用于使物体的模型的锋利边缘倒圆的方法和装置，其中球沿着待平滑的边缘在期望的方向上传播。 注意到球在其传播中的每个点处的位置，结果可以构造球通过的虚拟隧道。 接近尖锐边缘的物体表面侧面的点然后通过与尖锐边缘附近的每条线连接到隧道中心而投射到虚拟隧道上。 在隧道表面的每个位置上创建新的投影点，其中线与该表面相交。 然后沿尖锐边缘的原始点被隐藏或删除，沿着虚拟隧道的点通过公知的表面重建方法连接。 以这种方式，有利地平滑了三角形网格模型的尖锐边缘。

    Circuits and methods for transceiver self-interference cancellers
    7.
    发明授权
    Circuits and methods for transceiver self-interference cancellers 有权

    公开(公告)号：US10277204B2

    公开(公告)日：2019-04-30

    申请号：US15515823

    申请日：2015-10-01

    申请人： Jin Zhou ,  Harish Krishnaswamy

    发明人： Jin Zhou ,  Harish Krishnaswamy

    IPC分类号： H03H19/00 ,  H04B1/525 ,  H04B17/336 ,  H04L25/03

    摘要： Self-interference cancellers are provided. The self-interference cancellers can include multiple second-order, N-path Gm-C filters. Each filter can be configured to cancel self-interference on a channel of a desired bandwidth. Each filter can be independently controlled using a variable transmitter resistance, a variable receiver resistance, a variable baseband capacitance, a variable transconductance, and a variable time shift between local oscillators that control switches in the filter. By controlling these variables, magnitude, phase, slope of magnitude, and slope of phase of the cancellers frequency responses can be controlled for self-interference cancellation. A calibration process is also provided for configuring the canceller.

    Method and apparatus for non-shrinking mesh smoothing using local fitting
    8.
    发明授权
    Method and apparatus for non-shrinking mesh smoothing using local fitting 有权
    使用局部拟合法进行非收缩网格平滑的方法和装置

    公开(公告)号：US08698800B2

    公开(公告)日：2014-04-15

    申请号：US11466194

    申请日：2006-08-22

    申请人： Hui Xie ,  Jin Zhou ,  Tong Fang

    发明人： Hui Xie ,  Jin Zhou ,  Tong Fang

    IPC分类号： G06T17/20

    CPC分类号： G06T17/20

    摘要： A method and apparatus for the smoothing of a mesh surface is disclosed whereby neighboring vertices of a target vertex are identified, for example, by identifying the neighboring vertices within a desired distance from the target vertex. A normal of the target vertex is determined as a function of, for example, the features of a set of neighbor triangles corresponding to the set of neighboring vertices. A local coordinate system is then established. Unknowns in a quadratic surface function are then solved as a function of the position of the neighboring vertices with respect to the local coordinate system and new x and y coordinates in the local coordinate system are determined for the target vertex. These new x and y coordinates are entered into the quadratic surface function to obtain a new smoothed z coordinate for the target vertex.

    摘要翻译： 公开了一种用于平滑网格表面的方法和装置，其中例如通过识别距离目标顶点的期望距离内的相邻顶点来识别目标顶点的相邻顶点。 目标顶点的法线被确定为例如与相邻顶点集合相对应的一组相邻三角形的特征的函数。 然后建立一个局部坐标系。 然后根据相邻顶点相对于局部坐标系的位置求解二次曲面函数中的未知数，并为目标顶点确定局部坐标系中的新x和y坐标。 这些新的x和y坐标被输入到二次曲面函数中以获得目标顶点的新的平滑的z坐标。

    Plasma sterilizing-purifying device and method for air sterilizing and purifying
    9.
    发明授权
    Plasma sterilizing-purifying device and method for air sterilizing and purifying 有权
    等离子灭菌净化装置及其空气净化方法

    公开(公告)号：US08529830B2

    公开(公告)日：2013-09-10

    申请号：US13486228

    申请日：2012-06-01

    申请人： Yunzheng Zhou ,  Jianwei Fu ,  Jin Zhou

    发明人： Yunzheng Zhou ,  Jianwei Fu ,  Jin Zhou

    IPC分类号： A61L9/00 ,  A62B7/08

    CPC分类号： A61L9/22 ,  B03C3/011 ,  B03C3/38 ,  B03C3/41 ,  B03C3/68 ,  F24F3/166 ,  F24F2003/1682 ,  H02M7/003 ,  H05H1/2406 ,  H05H1/48 ,  H05H2001/481 ,  H05H2245/121 ,  Y02A50/22

    摘要： The present invention belongs to the technical field of air sterilizing and purification and in particular relates to a plasma air sterilizing and purifying device and an air sterilizing and purifying method. The plasma air sterilizing and purifying device comprises a plasma reactor, a pulse power supply, a fan component, a control device, a power adaptor, and a housing case, wherein the reactor is provided with positive electrodes formed by several nickel-chromium alloy wires or nickel-chromium alloy belts, and the two ends of each positive electrodes are fixed in the corresponding grooves on the micro-discharge preventive conductor rail; and a pulse power supply has a digital control circuit with an oscillator, an error amplifier and a PWM comparator inside which converts signals into a digital control current to control the width of the high-voltage pulse.

    摘要翻译： 本发明属于空气净化和净化技术领域，特别涉及等离子体空气净化装置和空气净化与净化方法。 等离子体空气净化装置包括等离子体反应器，脉冲电源，风扇部件，控制装置，电源适配器和外壳，其中反应器设置有由几个镍 - 铬合金丝 或镍铬合金带，并且每个正电极的两端固定在防放电导体导轨上的相应凹槽中; 并且脉冲电源具有数字控制电路，其具有振荡器，误差放大器和PWM比较器，其内部将信号转换为数字控制电流以控制高压脉冲的宽度。

    Dual-mode voltage controlled oscillator, frequency synthesizer and wireless receiving device
    10.
    发明授权
    Dual-mode voltage controlled oscillator, frequency synthesizer and wireless receiving device 有权
    双模压控振荡器，频率合成器和无线接收装置

    公开(公告)号：US08362809B2

    公开(公告)日：2013-01-29

    申请号：US13266759

    申请日：2011-04-14

    申请人： Wei Li ,  Jin Zhou

    发明人： Wei Li ,  Jin Zhou

    IPC分类号： H03B21/00

    CPC分类号： H03B27/00 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1265 ,  H03B19/00 ,  H03B2200/0078

    摘要： The invention provides a dual-mode voltage-controlled oscillator (DMVCO), a frequency synthesizer and a wireless receiving device, and pertains to the technical field of integrated circuit of radio frequency wireless receiver. The DMVCO and the frequency synthesizer can operate in a wideband mode and a quadrature mode. When operating in the quadrature mode, a quadrature signal is provided for a Single Sideband Mixer of the frequency synthesizer by a quadrature coupling of a first voltage-controlled oscillator unit and a second voltage-controlled oscillator unit in the DMVCO in the overlapped frequency band so that the frequency synthesizer can cover a higher output frequency band. Therefore, the tuning range of the DMVCO of the invention is wide, and the frequency synthesizer using the DMVCO is low in power consumption, simple in structure and has good frequency spur performance.

    摘要翻译： 本发明提供一种双模式压控振荡器（DMVCO），频率合成器和无线接收装置，属于射频无线接收机的集成电路技术领域。 DMVCO和频率合成器可以在宽带模式和正交模式下工作。 当以正交模式操作时，通过在重叠频带中的DMVCO中的第一压控振荡器单元和第二压控振荡器单元的正交耦合，为频率合成器的单边带混频器提供正交信号，所以 频率合成器可以覆盖更高的输出频带。 因此，本发明的DMVCO的调谐范围宽，使用DMVCO的频率合成器功耗低，结构简单，具有良好的频率杂散性能。