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    METHOD AND DEVICE FOR REAL-TIME COMPUTATION OF POINT-BY-POINT APODIZATION COEFFICIENTS
    61.
    发明申请
    METHOD AND DEVICE FOR REAL-TIME COMPUTATION OF POINT-BY-POINT APODIZATION COEFFICIENTS 有权
    点对点APODIZATION系统实时计算的方法和装置

    公开(公告)号：US20090054780A1

    公开(公告)日：2009-02-26

    申请号：US11967866

    申请日：2007-12-31

    申请人： Bo Yang ,  Pengfei Yang ,  Qinjun Hu

    发明人： Bo Yang ,  Pengfei Yang ,  Qinjun Hu

    IPC分类号： A61B8/00

    CPC分类号： G03B42/06 ,  A61B8/00 ,  G10K11/346

    摘要： A method for real-time computation of point-by-point apodization coefficients used for beam-forming includes storing apodization coefficients of receiving focus points in memory, and computing at least one of an included angle between a vector from a transducer element to a receiving point and a normal vector of the transducer element, and a trigonometric function value of the included angle. The method also includes addressing the memory storing the apodization coefficients according to the quantized included angle or trigonometric function value, and reading the apodization coefficients. In one embodiment, the method may include computing in advance apodization coefficients of a receiving focus point as the starting point for the subsequent interpolation operation and another receiving focus point as the ending point, and deriving, for each receiving channel, apodization coefficients of the points situated between these two receiving focus points through an interpolation operation.

    摘要翻译： 用于实时计算用于波束成形的逐点变迹系数的方法包括将接收焦点的变迹系数存储在存储器中，以及计算从换能器元件到接收的矢量之间的夹角中的至少一个 点和法向量，以及夹角的三角函数值。 该方法还包括根据量化的夹角或三角函数值寻址存储变迹系数的存储器，以及读取变迹系数。 在一个实施例中，该方法可以包括预先计算接收对焦点的变迹系数作为后续插值操作的起始点和另一接收焦点作为终点，并且为每个接收信道导出点的变迹系数 通过插值操作位于这两个接收对焦点之间。

    GATE DRIVING SCHEME FOR DEPLETION MODE DEVICES IN BUCK CONVERTERS
    62.
    发明申请
    GATE DRIVING SCHEME FOR DEPLETION MODE DEVICES IN BUCK CONVERTERS 有权
    闸阀转换器中的取消模式装置的闸门驱动方案

    公开(公告)号：US20090051225A1

    公开(公告)日：2009-02-26

    申请号：US12163100

    申请日：2008-06-27

    申请人： Bo Yang ,  Jason Zhang ,  Michael A. Briere

    发明人： Bo Yang ,  Jason Zhang ,  Michael A. Briere

    IPC分类号： H01H47/00

    CPC分类号： H02M3/1588 ,  H02J7/0018 ,  H02J7/345 ,  Y02B40/90 ,  Y02B70/1466 ,  Y10T307/747

    摘要： A circuit for driving a switching stage including control and sync switches series connected at a switching node, at least one of the control and sync switches being a normal ON depletion mode device, the circuit comprising a gate driver including first and second switching stages for generating gate drive signals for the sync and control switches, respectively, the first switching stage having a first driver output node and the second switching stage having a second driver output node, a signal from the first node driving the sync switch and a signal from the second node driving the control switch and a circuit connected to the first and second switching stages, the circuit including a first circuit providing a first voltage source, the first circuit being coupled to the first switching stage and to the sync switch, a first bias voltage from the first voltage source being switched by the first switching stage, the first switching stage having a first state wherein the sync switch is on, and a second state wherein the first bias voltage is switched to the gate of the sync switch to turn the sync switch off and a second circuit including a first energy storage device for charging with a second bias voltage, the second switching circuit having a first state, wherein the control switch is on when the sync switch is off and having a second state wherein the control switch is switched off when the sync switch is on by switching the second bias voltage to the gate of the control switch.

    摘要翻译： 一种用于驱动开关级的电路，包括连接在开关节点处的控制和同步开关串联，所述控制和同步开关中的至少一个是正常的导通耗尽型装置，所述电路包括栅极驱动器，所述栅极驱动器包括第一和第二开关级，用于产生 分别具有用于同步和控制开关的栅极驱动信号，第一开关级具有第一驱动器输出节点，第二开关级具有第二驱动器输出节点，来自驱动同步开关的第一节点的信号和来自第二驱动器输出节点的信号 节点驱动控制开关和连接到第一和第二开关级的电路，该电路包括提供第一电压源的第一电路，第一电路耦合到第一开关级和同步开关，第一偏置电压来自 第一电压源由第一开关级切换，第一开关级具有第一状态，其中同步开关为o n和第二状态，其中第一偏置电压切换到同步开关的栅极以使同步开关断开，第二电路包括第二电路，第二电路包括用于以第二偏置电压充电的第一能量存储装置，第二开关电路具有 第一状态，其中当同步开关关闭时，控制开关接通，并且具有第二状态，其中当同步开关接通时，通过将第二偏置电压切换到控制开关的门，控制开关被切断。

    Synchronous rectifier circuits and method for utilizing common source inductance of the synchronous FET
    63.
    发明授权
    Synchronous rectifier circuits and method for utilizing common source inductance of the synchronous FET 有权
    同步整流电路和方法，用于同步FET的共源电感

    公开(公告)号：US07492138B2

    公开(公告)日：2009-02-17

    申请号：US11096929

    申请日：2005-04-01

    申请人： Jason Zhang ,  Bo Yang

    发明人： Jason Zhang ,  Bo Yang

    IPC分类号： G05F1/00 ,  H02M3/335

    CPC分类号： H02M3/33592 ,  H02M3/1588 ,  Y02B70/1466 ,  Y02B70/1475

    摘要： A method of improving the operation of a synchronous rectifier circuit which includes a switching transistor and synchronous transistor, by providing an operatively effective value of inductance in the current path of the synchronous transistor; which is shared by the control terminal circuit path of the transistor and by selecting a synchronous transistor having a low resistance to a control signal provided at the control terminal, as well as improved synchronous rectifier circuits designed according to the method. When the transistors are MOSFETs, the inductance provided is preferably a purely parasitic common source inductance in the range of about 2 nH to about 3 nH. The synchronous transistor exhibits a low value of gate resistance to facilitate fast energy exchange between the common source inductance and the gate-source capacitance.

    摘要翻译： 一种通过在同步晶体管的电流路径中提供可操作有效的电感值来改善包括开关晶体管和同步晶体管的同步整流电路的操作的方法; 其由晶体管的控制端子电路路径共享，并且通过选择对控制端子处提供的控制信号具有低电阻的同步晶体管以及根据该方法设计的改进的同步整流器电路。 当晶体管是MOSFET时，所提供的电感优选为大约2nH至大约3nH范围内的纯寄生共源电感。 同步晶体管表现出低的栅极电阻值，以促进共源极电感和栅源电容之间的快速能量交换。

    Corrosion inhibitors, corrosion inhibiting heat transfer fluids, and the use thereof
    65.
    发明申请
    Corrosion inhibitors, corrosion inhibiting heat transfer fluids, and the use thereof 有权
    腐蚀抑制剂，腐蚀抑制传热流体及其用途

    公开(公告)号：US20060054564A1

    公开(公告)日：2006-03-16

    申请号：US11222024

    申请日：2005-09-08

    申请人： Peter Woyciesjes ,  Aleksei Gershun ,  Filipe Marinho ,  Thomas Kalagher ,  Bo Yang

    发明人： Peter Woyciesjes ,  Aleksei Gershun ,  Filipe Marinho ,  Thomas Kalagher ,  Bo Yang

    IPC分类号： C02F1/00 ,  C02F5/08

    CPC分类号： H01M8/04029 ,  C09K5/10 ,  C23F11/08 ,  C23F11/10 ,  C23F11/149 ,  C23F14/02 ,  Y02P70/56

    摘要： Disclosed is a corrosion inhibitor for use in heat transfer fluids having a conductivity of less than 200 μS/cm, the corrosion inhibitor having an azole compound, and at least one of a siloxane based surfactant, colloidal silica, or a mixture thereof. Also disclosed is a corrosion inhibiting heat transfer fluid, the heat transfer fluid having a conductivity of no more than or equal to 200 μS/cm and comprising the disclosed corrosion inhibitor. Also provided is an assembly comprising an alternative power source and a heat transfer system in thermal communication with the alternative power source, the heat transfer system comprising the disclosed corrosion inhibiting heat transfer fluid. In addition, a method of making a corrosion inhibiting heat transfer fluid is disclosed wherein the disclosed corrosion inhibitor is added to heat transfer fluid having a conductivity of less than 200 μS/cm.

    摘要翻译： 公开了一种用于导电率小于200μS/ cm 2的传热流体的腐蚀抑制剂，具有唑化合物的缓蚀剂和至少一种硅氧烷基表面活性剂，胶体二氧化硅或其混合物。 还公开了一种腐蚀抑制传热流体，该传热流体的导电率不大于或等于200μS/ cm，并且包括所公开的腐蚀抑制剂。 还提供了一种组件，其包括替代电源和与替代电源热连通的传热系统，所述传热系统包括所公开的腐蚀抑制传热流体。 此外，公开了一种制造腐蚀抑制传热流体的方法，其中将所公开的腐蚀抑制剂加入导电率小于200μS/ cm的传热流体中。

    Synchronous rectifier circuits and method for utilizing common source inductance of the synchronous fet
    66.
    发明申请
    Synchronous rectifier circuits and method for utilizing common source inductance of the synchronous fet 有权
    同步整流电路和同步电机的共源电感的方法

    公开(公告)号：US20050265057A1

    公开(公告)日：2005-12-01

    申请号：US11096929

    申请日：2005-04-01

    申请人： Jason Zhang ,  Bo Yang

    发明人： Jason Zhang ,  Bo Yang

    IPC分类号： H02M3/155 ,  H02M3/158 ,  H02M3/28 ,  H02M3/335 ,  H02M7/217

    CPC分类号： H02M3/33592 ,  H02M3/1588 ,  Y02B70/1466 ,  Y02B70/1475

    摘要： A method of improving the operation of a synchronous rectifier circuit which includes a switching transistor and synchronous transistor, by providing an operatively effective value of inductance in the current path of the synchronous transistor; which is shared by the control terminal circuit path of the transistor and by selecting a synchronous transistor having a low resistance to a control signal provided at the control terminal, as well as improved synchronous rectifier circuits designed according to the method. When the transistors are MOSFETs, the inductance provided is preferably a purely parasitic common source inductance in the range of about 2 nH to about 3 nH. The synchronous transistor exhibits a low value of gate resistance to facilitate fast energy exchange between the common source inductance and the gate-source capacitance.

    摘要翻译： 一种通过在同步晶体管的电流路径中提供可操作有效的电感值来改善包括开关晶体管和同步晶体管的同步整流电路的操作的方法; 其由晶体管的控制端子电路路径共享，并且通过选择对控制端子处提供的控制信号具有低电阻的同步晶体管以及根据该方法设计的改进的同步整流器电路。 当晶体管是MOSFET时，所提供的电感优选为大约2nH至大约3nH范围内的纯寄生共源电感。 同步晶体管表现出低的栅极电阻值，以促进共源极电感和栅源电容之间的快速能量交换。

    Replica compensated heterogeneous DACs and methods
    69.
    发明授权
    Replica compensated heterogeneous DACs and methods 有权
    复制补偿异构DAC和方法

    公开(公告)号：US06642867B1

    公开(公告)日：2003-11-04

    申请号：US10188897

    申请日：2002-07-03

    申请人： Rahim Chowdhury ,  Bo Yang ,  David Castaneda

    发明人： Rahim Chowdhury ,  Bo Yang ,  David Castaneda

    IPC分类号： H03M106

    CPC分类号： H03M1/0678 ,  H03M1/687 ,  H03M1/747 ,  H03M1/785

    摘要： Digital to analog converters having a hybrid two-stage structure. The first stage is a differential segmented current DAC controlled by the MSBs (most significant bits) of input data. The second stage is a resistor string DAC controlled by the LSBs (least significant bits) of the input data to interpolate between the differential outputs of the first stage. The resistor string is directly connected to the current DAC without the need of buffer amplifiers. Instead, a replica circuit is used to prevent the second-stage resistor string from loading the first stage current DAC. Compensation techniques are described.

    摘要翻译： 具有混合两级结构的数模转换器。 第一级是由MSB（最高有效位）输入数据控制的差分分段电流DAC。 第二级是由输入数据的LSB（最低有效位）控制的电阻串DAC，以在第一级的差分输出之间插值。 电阻串直接连接到电流DAC而不需要缓冲放大器。 而是使用复制电路来防止第二级电阻串加载第一级电流DAC。 描述了补偿技术。

    In-stack single-domain stabilization of free layers for CIP and CPP spin-valve or tunnel-valve read heads
    70.
    发明授权
    In-stack single-domain stabilization of free layers for CIP and CPP spin-valve or tunnel-valve read heads 失效
    用于CIP和CPP自旋阀或隧道阀读头的自由层的堆叠单域稳定

    公开(公告)号：US06473279B2

    公开(公告)日：2002-10-29

    申请号：US09754908

    申请日：2001-01-04

    申请人： Neil Smith ,  Bo Yang

    发明人： Neil Smith ,  Bo Yang

    IPC分类号： G11B539

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G01R33/098 ,  G11B5/012 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3932

    摘要： An improved MR sensor has a ferromagnetic free layer whose magnetization is stabilized by an in-stack three layers combination, which including an auxiliary ferromagnetic layer proximate the ferromagnetic free layer, a non-magnetic spacer layer disposed between the ferromagnetic free layer and the auxiliary ferromagnetic layer, and a pinning layer adjacent to the auxiliary ferromagnetic layer. The pinning layer is directly exchange-coupled to the auxiliary ferromagnetic layer such that the magnetization of the auxiliary ferromagnetic layer is pinned. The non-magnetic spacer layer is made of a material, such as Ru, which induces an anti-ferromagnetic exchange coupling between the ferromagnetic free layer and the auxiliary ferromagnetic layer. The magnetization of the ferromagnetic free layer is stabilized in a single-domain state by the combination of the anti-ferromagnetic exchange-coupling and magnetostatic coupling between the ferromagnetic free layer and the auxiliary ferromagnetic layer.

    摘要翻译： 改进的MR传感器具有铁磁自由层，其磁化通过叠层三层组合来稳定，其包括靠近铁磁自由层的辅助铁磁层，设置在铁磁性自由层和辅助铁磁体之间的非磁性间隔层 层和与辅助铁磁层相邻的钉扎层。 钉扎层直接交换耦合到辅助铁磁层，使得辅助铁磁层的磁化被钉扎。 非磁性间隔层由诸如Ru的材料制成，其引起铁磁自由层和辅助铁磁层之间的反铁磁交换耦合。 铁磁自由层的磁化通过铁磁自由层和辅助铁磁层之间的反铁磁交换耦合和静磁耦合的组合而在单畴状态下稳定。