Encapsulation method for packaging semiconductor components with external leads
    31.
    发明授权
    Encapsulation method for packaging semiconductor components with external leads 有权
    用外部引线封装半导体元件的封装方法

    公开(公告)号:US07943424B1

    公开(公告)日:2011-05-17

    申请号:US12592597

    申请日:2009-11-30

    IPC分类号: H01L21/56

    摘要: This invention discloses a method for packaging a semiconductor device with leads extending outside its encapsulation. The method comprises the following steps: Step 1, providing a lead frame comprising a plurality of lead frame units arranged in two dimensional array, each lead frame unit comprising a die pad and a plurality of leads located along two opposite sides of the die pad, attaching a semiconductor chip onto the die pad and electrically connecting the electrodes on each chip to its corresponding leads; Step 2, Encapsulating the chips, the die pads, and the leads with molding material into a plurality of one dimensional plastic encapsulation bars with the leads of each lead frame unit extending out along two opposite sides of the plastic encapsulation bars connecting to a plurality of tie bars substantially parallel to the plastic encapsulation bars; Step 3, Trimming off the tie bars therefore cutting off the connections between the leads to the tie bars while preserving a portion of the leads extending out of the plastic encapsulation bars; and Step 4, Sawing through the plastic encapsulation bars to form a plurality of individual semiconductor components with leads extending outside its encapsulation.

    摘要翻译: 本发明公开了一种用于封装半导体器件的方法,该半导体器件具有在其封装之外延伸的引线。 该方法包括以下步骤:步骤1,提供包括以二维阵列排列的多个引线框单元的引线框架,每个引线框架单元包括管芯焊盘和位于管芯焊盘的两个相对侧的多个引线, 将半导体芯片附接到芯片焊盘上并将每个芯片上的电极电连接到其对应的引线; 步骤2,通过模塑材料将芯片,芯片焊盘和引线封装成多个一维塑料封装棒,每个引线框架单元的引线沿塑料封装条的两个相对侧延伸,连接到多个 连接条基本上平行于塑料封装条; 步骤3,修剪连接杆,从而切断导线到连接杆之间的连接,同时保留从塑料封装棒伸出的一部分引线; 和步骤4,通过塑料封装条锯切以形成多个单独的半导体部件,其引线延伸到其封装外部。

    Wireless and passive tablet for inputting to computer
    32.
    发明授权
    Wireless and passive tablet for inputting to computer 有权
    无线和被动平板电脑输入到电脑

    公开(公告)号:US07623120B2

    公开(公告)日:2009-11-24

    申请号:US10506467

    申请日:2003-04-18

    IPC分类号: G06F3/045

    CPC分类号: G06F3/046

    摘要: This invention refers to peripheral equipment of a computer and is a wireless and passive tablet for inputting to the computer that converts the track of handwriting to digital X, Y coordinates and then inputs it to the computer and then displays the track on screen of the computer. The characteristic of the wireless and passive tablet is using the coil of X, Y direction in transmitting and receiving. A square wave is generated and input to a transmitting circuit. A transmitted electromagnetic wave is inputted to a circuit of a pen to form resonance that will be outputted to a receiving circuit. The receiving circuit connects to an amplifying circuit to amplify the signal and input the amplified signal into a phase angle detecting circuit and an amplitude detecting circuit respectively to control the phase angle and amplitude. And then the signal is inputted to a primary CPU to realize the writing function of the wireless pen.

    摘要翻译: 本发明涉及一种计算机的外围设备,是一种无线和无源平板电脑,用于向计算机输入将手写轨迹转换为数字X,Y坐标,然后将其输入到计算机,然后在计算机屏幕上显示轨迹 。 无线和无源平板电脑的特点是使用X,Y方向的线圈进行发送和接收。 生成方波并将其输入到发送电路。 传输的电磁波被输入到笔的电路,以形成将被输出到接收电路的谐振。 接收电路连接到放大电路以放大信号并分别将放大的信号输入相位角检测电路和振幅检测电路以控制相位角和振幅。 然后将信号输入到主CPU,以实现无线笔的写入功能。

    Filter response optimization for an arrayed waveguide grating device by adjusting grating optical path length at nanometer scale
    33.
    发明授权
    Filter response optimization for an arrayed waveguide grating device by adjusting grating optical path length at nanometer scale 有权
    通过调整纳米尺度的光栅路径长度,对阵列波导光栅器件的滤波器响应优化

    公开(公告)号:US07194162B2

    公开(公告)日:2007-03-20

    申请号:US10082603

    申请日:2002-02-22

    IPC分类号: G02B6/34 G02B6/00

    CPC分类号: G02B6/12011 G02B6/12033

    摘要: A method of optimizing a filter response of an arrayed waveguide grating is disclosed. The method includes the step of measuring a respective phase error of a plurality of waveguide cores of the arrayed waveguide grating. Once the phase error is measured, a respective optical path length of the cores is adjusted in accordance with the respective phase error of the cores. Optical path length is adjusted by adjusting a respective refractive index of the cores. The respective optical path length can be controlled to nanometer accuracies by adjusting the respective refractive index of the cores.

    摘要翻译: 公开了一种优化阵列波导光栅的滤波器响应的方法。 该方法包括测量阵列波导光栅的多个波导芯的相应误差的步骤。 一旦测量出相位误差,则根据芯的相应的相位误差来调整芯的相应的光程长度。 通过调整芯的折射率来调节光路长度。 可以通过调整各芯的折射率来将相应的光程长度控制到纳米精度。

    Real time music recognition and display system
    34.
    发明申请
    Real time music recognition and display system 有权
    实时音乐识别和显示系统

    公开(公告)号:US20050015258A1

    公开(公告)日:2005-01-20

    申请号:US10622083

    申请日:2003-07-16

    IPC分类号: G10H1/00 G10H3/12 G10L15/00

    摘要: Systems and methods for performing simple and quick real time single music note recognition algorithm based on fuzzy pattern matching are disclosed. In one aspect, the systems and methods use a 256-point FFT and fuzzy pattern identification and recognition method. The systems and methods can recognize a note as short as 0.125 seconds in a frequency range from 16 Hz to 4000 Hz, with 11.025 KHz sampling rate and 8-bit per sampling signal. The systems and methods may be used as part of a music tutor system that receives a played note, identifies the played note, and compares the played note with a reference note. An indication may be given as to whether the played note matched the reference note.

    摘要翻译: 公开了基于模糊模式匹配的简单快速实时单音乐识别算法的系统和方法。 一方面,系统和方法使用256点FFT和模糊模式识别和识别方法。 系统和方法可以在16 Hz至4000 Hz的频率范围内识别短至0.125秒的音符,采样速率为11.025 KHz,每采样信号为8位。 系统和方法可以被用作接收播放的音符的音乐辅导系统的一部分,识别播放的音符,并将播放的音符与参考音符进行比较。 可以给出播放的音符是否与参考音符相匹配的指示。

    Dendritic taper for an integrated optical wavelength router
    36.
    发明授权
    Dendritic taper for an integrated optical wavelength router 有权
    集成光波长路由器的树枝状锥度

    公开(公告)号:US06697552B2

    公开(公告)日:2004-02-24

    申请号:US09848093

    申请日:2001-05-03

    IPC分类号: G02B634

    摘要: The present invention generally provides an optical wavelength router that includes at least one dendritic taper region. The dendritic taper region includes at least one dendritic taper which has a trunk and at least one branch optically coupled to the trunk. In addition to the dendritic taper region, the optical wavelength router includes at least one input waveguide, a input slab waveguide, an arrayed waveguide grating, an output slab waveguide, and at least one output waveguide. The improved optical wavelength router provides a wide passband width without a substantial effect on insertion loss.

    摘要翻译: 本发明通常提供一种光波长路由器,其包括至少一个树枝状锥形区域。 树枝状锥形区域包括至少一个枝状锥体,其具有树干和至少一个光学耦合到树干的分支。 除了树枝状锥形区域之外,光学波长路由器还包括至少一个输入波导,输入平板波导,阵列波导光栅,输出平板波导和至少一个输出波导。 改进的光波长路由器提供宽的通带宽度,而对插入损耗没有实质的影响。

    Fluid flow control
    37.
    发明授权
    Fluid flow control 有权
    流体流量控制

    公开(公告)号:US09157298B2

    公开(公告)日:2015-10-13

    申请号:US13704024

    申请日:2011-12-16

    摘要: Fluid flow influencer devices capable of affecting fluid flow for fluid selection are described. Fluid flow influencer devices may affect fluid flowing into a turbulence, such as a vortex, having a structure that is usable to restrict fluid flow in a flow path of a chamber by different amounts based on at least one property of the fluid. The fluid flow control device may be in an autonomous fluid selector, such as a diverter, a vortex-causing device, or a whisker. Fluid properties based on which the flow influencer device can select fluid can include fluid density, fluid velocity, fluid viscosity, and Reynolds number of the fluid flow.

    摘要翻译: 描述了能够影响用于流体选择的流体流动的流体流动影响器装置。 流体流动影响器装置可以影响流入诸如涡流的湍流的流体,其具有可基于流体的至少一个特性限制腔室流动路径中不同量的流体流动的结构。 流体流量控制装置可以在自主流体选择器中,例如分流器,涡流引发装置或晶须。 流体影响器可以选择流体的流体性质可以包括流体密度,流体速度,流体粘度和流体流动的雷诺数。

    Autonomous fluid control device having a movable valve plate for downhole fluid selection
    38.
    发明授权
    Autonomous fluid control device having a movable valve plate for downhole fluid selection 有权
    具有用于井下流体选择的可动阀板的自主流体控制装置

    公开(公告)号:US08991506B2

    公开(公告)日:2015-03-31

    申请号:US13640542

    申请日:2011-10-31

    摘要: An apparatus and method are described for autonomously controlling flow of fluid in a subterranean well, where fluid flow is controlled based on a fluid characteristic, such as viscosity or density, which changes over time. Fluid flows into a vortex assembly where a centrifugal force is imparted to the fluid. A less viscous fluid will have a relatively greater velocity and centrifugal force than a more viscous fluid. The fluid exits the vortex chamber by both a vortex outlet and a peripheral outlet. An autonomous valve element moves between an open position, in which fluid flows freely through the peripheral outlet, and a closed position, in which fluid flow through the peripheral outlet is restricted. The valve element is moved by the centrifugal force of the fluid, such that a fluid having a higher centrifugal force moves the valve element to the closed position, thereby reducing the total fluid flow through the vortex assembly.

    摘要翻译: 描述了一种用于自主控制地下井中的流体流动的装置和方法,其中基于随时间变化的流体特性(例如粘度或密度)来控制流体流动。 流体流入涡流组件,其中离心力被施加到流体。 较粘稠的流体将具有比较粘稠的流体相对更大的速度和离心力。 流体通过涡流出口和外围出口都离开涡流室。 自主阀元件在流体通过周边出口自由流动的打开位置和闭合位置之间移动,在该位置限制流过外围出口的流体流动。 阀元件通过流体的离心力移动,使得具有较高离心力的流体将阀元件移动到关闭位置,从而减少通过涡流组件的总流体流量。

    Systematic intermodulation distortion calibration for a differential LNA
    40.
    发明授权
    Systematic intermodulation distortion calibration for a differential LNA 失效
    差分LNA的系统互调失真校准

    公开(公告)号:US08653892B2

    公开(公告)日:2014-02-18

    申请号:US13167655

    申请日:2011-06-23

    IPC分类号: H03F1/26

    摘要: Systematic IM2 calibration for a differential LNA is disclosed. In an aspect, an apparatus includes an amplifier configured to output an amplified signal having a level of systematic pre-mixer IM2 distortion, a detector configured to detect the level of the systematic pre-mixer IM2 distortion in the amplified signal, and a bias signal generator configured to generate at least one bias signal configured to adjust the amplifier to reduce the level of the systematic pre-mixer IM2 distortion.

    摘要翻译: 公开了用于差分LNA的系统IM2校准。 一方面,一种装置包括:放大器,被配置为输出具有系统预混频器IM2失真电平的放大信号;检测器,被配置为检测放大信号中的系统预混频器IM2失真的电平;以及偏置信号 配置成产生至少一个偏置信号的发生器,所述至少一个偏置信号被配置为调节放大器以减小系统预混频器IM2失真的电平。