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    Handheld vision tester and calibration thereof
    5.
    发明授权
    Handheld vision tester and calibration thereof 有权
    手持式视力测试仪及其校准

    公开(公告)号：US09033508B2

    公开(公告)日：2015-05-19

    申请号：US13319317

    申请日：2010-05-07

    申请人： Michael Bartlett ,  William R. Krenik ,  Yi-Zhong Wang

    发明人： Michael Bartlett ,  William R. Krenik ,  Yi-Zhong Wang

    IPC分类号： A61B3/02 ,  A61B3/032 ,  A61B3/00

    CPC分类号： A61B3/032 ,  A61B3/0033 ,  A61B3/005 ,  A61B3/0066 ,  A61B3/0075 ,  A61B5/14532 ,  G09G2380/08 ,  H04N5/351

    摘要： In one aspect, there is provided a handheld vision tester comprising a display, cursor control, interface port, and camera. The display delivers a series of images making up vision tests to a user who interacts with the vision tests by using the display and cursor control of the handheld vision tester. The camera verifies the user is taking the vision tests. The results of the vision tests are stored in the handheld communication device. The interface port allows for communication of the stored results of the vision tests with external devices. In another aspect, there is provided a calibration system for the handheld vision tester. The calibration system includes a stand to hold the handheld vision tester and a reflective surface substantially parallel to a display of the handheld vision tester.

    摘要翻译： 一方面，提供了一种包括显示器，光标控制，接口端口和照相机的手持式视觉测试仪。 该显示器通过使用手持式视觉测试仪的显示和光标控制，向与视觉测试交互的用户提供构成视觉测试的一系列图像。 相机验证用户正在进行视力测试。 视觉测试的结果存储在手持通信设备中。 接口端口允许将存储的视觉测试结果与外部设备进行通信。 另一方面，提供了一种用于手持视觉测试仪的校准系统。 校准系统包括支架，用于支撑手持式视觉测试仪和基本平行于手持视觉测试仪的显示器的反射表面。

    Vision measurement and training system and method of operation thereof
    6.
    发明授权
    Vision measurement and training system and method of operation thereof 有权
    视力测量与训练系统及其操作方法

    公开(公告)号：US08668334B2

    公开(公告)日：2014-03-11

    申请号：US11679564

    申请日：2007-02-27

    申请人： William R. Krenik

    发明人： William R. Krenik

    IPC分类号： A61B3/10

    CPC分类号： A61H5/005 ,  A61B3/0033 ,  A61B3/024 ,  A61B3/032 ,  A61B3/036 ,  A61B3/08 ,  A61H23/02 ,  A61H2201/0207 ,  A61H2201/10 ,  A61H2201/1604 ,  A61H2201/165 ,  A61H2201/501 ,  A61H2201/5043 ,  A61H2201/5048 ,  A61H2201/5058 ,  A61H2201/5092 ,  A61H2201/5097

    摘要： A binocular viewer, a method of measuring and training vision that uses a binocular viewer and a vision measurement and training system that employs a computer to control the binocular viewer. In one embodiment, the binocular viewer has left and right display elements and comprises: (1) a variable focal depth optical subsystem located in an optical path between the display elements and a user when the user uses the binocular viewer and (2) a control input coupled to the left and right display elements and the variable focal depth optical subsystem and configured to receive control signals operable to place images on the left and right display elements and vary a focal depth of the variable focal depth optical subsystem. In another embodiment, the binocular viewer lacks the variable focal depth optical subsystem, but the images include at least one feature unique to one of the left and right display elements.

    摘要翻译： 双眼观察者，使用双目观察者的测量和训练视觉的方法以及采用计算机来控制双目观察者的视觉测量和训练系统。 在一个实施例中，双目观察器具有左右显示元件，并且包括：（1）当用户使用双目观察者时，位于显示元件与用户之间的光路中的可变焦深光学子系统，以及（2）控制 输入，耦合到左和右显示元件和可变焦深度光学子系统，并且被配置为接收可操作以将图像放置在左显示元件和右显示元件上并改变可变焦深光学子系统的焦深的控制信号。 在另一个实施例中，双目观察器缺少可变焦深度光学子系统，但是图像包括左和右显示元件之一唯一的至少一个特征。

    Micro-electro-mechanical system having movable element integrated into leadframe-based package
    7.
    发明授权
    Micro-electro-mechanical system having movable element integrated into leadframe-based package 有权
    具有集成到基于引线框的封装中的可移动元件的微机电系统

    公开(公告)号：US08338208B2

    公开(公告)日：2012-12-25

    申请号：US12969910

    申请日：2010-12-16

    申请人： Edgar Rolando Zuniga-Ortiz ,  William R. Krenik

    发明人： Edgar Rolando Zuniga-Ortiz ,  William R. Krenik

    IPC分类号： H01L21/00

    CPC分类号： B81B3/0021 ,  B81C1/00238 ,  B81C2203/0792 ,  H01L2224/16 ,  H01L2924/1461 ,  H01L2924/1815 ,  H01L2924/00

    摘要： A MEMS may integrate movable MEMS parts, such as mechanical elements, flexible membranes, and sensors, with the low-cost device package, leaving the electronics and signal-processing parts in the integrated circuitry of the semiconductor chip. The package may be a leadframe-based plastic molded body having an opening through the thickness of the body. The movable part may be anchored in the body and extend at least partially across the opening. The chip may be flip-assembled to the leads to span across the foil, and may be separated from the foil by a gap. The leadframe may be a prefabricated piece part, or may be fabricated in a process flow with metal deposition on a sacrificial carrier and patterning of the metal layer. The resulting leadframe may be flat or may have an offset structure useful for stacked package-on-package devices.

    摘要翻译： MEMS可以利用低成本器件封装集成可移动MEMS部件，例如机械元件，柔性膜和传感器，将电子器件和信号处理部件留在半导体芯片的集成电路中。 封装可以是具有通过主体厚度的开口的引线框架的塑料模制体。 可移动部分可以锚定在主体中并且至少部分地延伸穿过开口。 芯片可以被翻转组装到引线跨越箔片，并且可以通过间隙与箔片分离。 引线框架可以是预制件部件，或者可以以牺牲载体上的金属沉积和金属层的图案化的工艺流程制造。 所得到的引线框架可以是平坦的，或者可以具有对于堆叠的封装封装器件有用的偏移结构。

    Fir filter architecture
    8.
    发明授权
    Fir filter architecture 失效
    冷杉过滤器架构

    公开(公告)号：US6035320A

    公开(公告)日：2000-03-07

    申请号：US368679

    申请日：1995-01-04

    申请人： Sami Kiriaki ,  William R. Krenik

    发明人： Sami Kiriaki ,  William R. Krenik

    IPC分类号： H03M1/66 ,  H03H17/06 ,  G06G7/02 ,  G06F17/10

    CPC分类号： H03H17/06

    摘要： A novel Finite Impulse Response filter (FIR) Filter is provided which includes a plurality of multipliers (14-22), a plurality of multiplexers (24-32), and a plurality of sample and hold circuits (34-42). At least two of the sample and hold circuit output signals (1-5) may be multiplexed in a round robin fashion to at least two of the multipliers (14-22). The multipliers may receive as a second input, fixed tap coefficient signals (C.sub.1 -C.sub.5) for multiplication with the multiplexed sample and hold circuit output signals (1-5).

    摘要翻译： 提供了一种新颖的有限脉冲响应滤波器（FIR）滤波器，其包括多个乘法器（14-22），多个复用器（24-32）和多个采样和保持电路（34-42）。 至少两个采样和保持电路输出信号（1-5）可以以循环方式复用到至少两个乘法器（14-22）。 乘法器可以接收作为第二输入的固定抽头系数信号（C1-C5），用于与复用的采样和保持电路输出信号（1-5）相乘。

    Method and circuit for driving hard disk drive spindle and actuator motors
    9.
    发明授权
    Method and circuit for driving hard disk drive spindle and actuator motors 失效
    用于驱动硬盘驱动器主轴和执行器电机的方法和电路

    公开(公告)号：US06021015A

    公开(公告)日：2000-02-01

    申请号：US861251

    申请日：1997-05-21

    申请人： Edward N. Jeffrey ,  William R. Krenik ,  David Cotton ,  Dennis V. Hahn ,  Shaibal Barua ,  Roy C. Jones, III

    发明人： Edward N. Jeffrey ,  William R. Krenik ,  David Cotton ,  Dennis V. Hahn ,  Shaibal Barua ,  Roy C. Jones, III

    IPC分类号： G11B19/20 ,  G11B19/28 ,  G11B21/08 ,  G11B21/10 ,  G11B25/04 ,  G11B33/12 ,  G11B15/18

    CPC分类号： G11B33/121 ,  G11B19/20 ,  G11B19/28 ,  G11B21/083 ,  G11B21/10 ,  G11B25/043 ,  G11B33/122

    摘要： A system for driving hard disk drive spindle and actuator motors is disclosed. The system comprises a spindle motor control circuit (120), a spindle motor power circuit (210), an actuator motor control circuit (110), and an actuator motor power circuit (210). The spindle motor control circuit (120) and the actuator motor control circuit (110) are formed on a first substrate (100). The spindle motor power circuit (210) and the actuator motor power circuit (220) are formed on a second substrate (200). The system also includes at least one disk (22) attached to a rotatable spindle (21), a spindle motor (400) for receiving and being energized by the spindle motor power signals, and for controlling the rotation of the spindle (21), a plurality of disk read heads (12) adjacent to the disks (22), and an actuator motor (300) for receiving and being energized by the actuator motor power signals, and for controlling the position of the disk read heads (12).

    摘要翻译： 公开了一种用于驱动硬盘驱动器主轴和致动器电动机的系统。 该系统包括主轴电动机控制电路（120），主轴电动机功率电路（210），致动器电动机控制电路（110）和致动器电动机功率电路（210）。 主轴电动机控制电路（120）和致动器电动机控制电路（110）形成在第一基板（100）上。 主轴电动机功率电路（210）和致动器电动机功率电路（220）形成在第二衬底（200）上。 该系统还包括附接到可旋转主轴（21）的至少一个盘（22），用于由主轴电机功率信号接收和激励并用于控制主轴（21）的旋转的主轴电动机（400） 与盘（22）相邻的多个磁盘读取头（12）以及用于由致动器电机功率信号接收和激励并用于控制磁盘读取头（12）的位置的致动器马达（300）。

    Circuit and method for programmably changing the transconductance of a transconductor circuit
    10.
    发明授权
    Circuit and method for programmably changing the transconductance of a transconductor circuit 失效
    用于可编程地改变跨导电路的跨导的电路和方法

    公开(公告)号：US5994926A

    公开(公告)日：1999-11-30

    申请号：US838300

    申请日：1997-04-16

    申请人： Patrick P. Siniscalchi ,  Davy H. Choi ,  William R. Krenik

    发明人： Patrick P. Siniscalchi ,  Davy H. Choi ,  William R. Krenik

    IPC分类号： H03F3/45 ,  H03G1/00 ,  H03K5/22

    CPC分类号： H03G1/0023 ,  H03F3/45076

    摘要： A programmably variable transconductance circuit (10) and method for varying its transconductance includes first and second current control input devices (16, 18), each having an input (17,19) to which a differential input voltage may be applied. A pair of current steering circuits (26, 28, 30, 32) are each connected in series with a respective one of the first and second current control devices (16, 18) for dividing respective currents in the first and second current control devices (16, 18) between a differential output current path (12, 14) and another current flow path, and a programmable voltage source (90) supplying V.sub.CONTROL is connected to control the current division by the current steering circuits (26, 28, 30, 32). The programmable voltage, V.sub.CONTROL, is provided by a programmable current control loop (90), which incorporates a master transconductance circuit, to establish a constant transconductance independently of temperature variations. A dynamically controllable resistance, such as an MOS transistor (24), or the like, is connected between the first and second current control input devices (16, 18), and a second voltage source (V.sub.GATE) is connected to the dynamically controllable resistance (24) to maintain the dynamically controllable resistance (24) at a constant value.

    摘要翻译： 用于改变其跨导的可编程可变跨导电路（10）和方法包括第一和第二电流控制输入装置（16,18），每个具有可以施加差动输入电压的输入端（17,19）。 一对电流转向电路（26,28,30,32）各自与第一和第二电流控制装置（16,18）中的相应一个串联连接，用于分开第一和第二电流控制装置（ 16,28,30,30,40,30,40,30,40,30,40,30,40,30,40,30,40,40,30,40,30,40,40,40,40,43,40,40,40,40,40,40,40,40,40,40,40,40,40,62,62,62,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64 32）。 可编程电压VCONTROL由可编程电流控制回路（90）提供，可编程电流控制回路（90）包含主跨导电路，以独立于温度变化建立恒定跨导。 诸如MOS晶体管（24）等的动态可控电阻连接在第一和第二电流控制输入装置（16,18）之间，第二电压源（VGATE）连接到动态可控电阻 （24）以将所述动态可控电阻（24）保持在恒定值。