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    • 2. 发明授权
    • Programmable data acquisition system for collecting electrical power
signals
    • 用于收集电力信号的可编程数据采集系统
    • US5677845A
    • 1997-10-14
    • US459861
    • 1995-06-02
    • Daniel Arthur StaverChung-Yih HoDonald Thomas McGrath
    • Daniel Arthur StaverChung-Yih HoDonald Thomas McGrath
    • H03M3/02G06F7/38G06F7/70
    • H03M3/378H03M3/458
    • A programmable data acquisition system including a plurality of input signal channels for receiving a respective input signal during a normal mode of operation is provided. Individual test circuits are used for selecting respective ones of the plurality of channels to receive predetermined reference signals during a test mode of operation while uninterruptedly providing the normal mode of operation in any remaining unselected channels in the data acquisition system. An analog-to-digital (A/D) converter system, such as delta-sigma modulators and decimation filters having a selectable decimation ratio, allows for supplying quantized electrical signals at a predetermined rate. The A/D converter is responsive to any signals carried in the plurality of signal channels as selected by the individual test circuits. A control unit allows for supplying respective control signals to the test circuits and to the converter system. The data acquisition system can further include at least one feedback generating circuit for generating a measurement signal supplied to a respective one of the signal channels. This allows the data acquisition system for interfacing with a zero-flux current sensor.
    • 提供了一种可编程数据采集系统,其包括用于在正常操作模式期间接收相应输入信号的多个输入信号通道。 单独的测试电路用于选择多个通道中的相应通道以在测试操作模式期间接收预定的参考信号,同时在数据采集系统中的任何剩余的未选择的通道中不间断地提供正常操作模式。 诸如具有可选抽取比率的Δ-Σ调制器和抽取滤波器的模数(A / D)转换器系统允许以预定速率提供量化的电信号。 A / D转换器响应于由各个测试电路选择的多个信号通道中承载的任何信号。 控制单元允许向测试电路和转换器系统提供相应的控制信号。 数据采集​​系统还可以包括至少一个反馈产生电路,用于产生提供给相应信号通道的测量信号。 这允许数据采集系统与零磁通电流传感器进行接口。
    • 3. 发明授权
    • Architecture to implement floating point multiply/accumulate operations
    • 架构实现浮点乘法/累加运算
    • US4841467A
    • 1989-06-20
    • US104453
    • 1987-10-05
    • Chung-Yih HoKarl J. MolnarDaniel A. Staver
    • Chung-Yih HoKarl J. MolnarDaniel A. Staver
    • G06F7/485G06F7/50G06F7/544
    • G06F7/485G06F7/5443G06F2207/3884G06F7/49936
    • A multiply/accumulator chip architecture capable of operating at a 20 megahertz system clock rate is designed so as to accept floating point numbers in sign magnitude form, to compute a product of the fractional portions thereof and to convert the fractional result into two's complement form for accumulation with the results of a previous product. This architecture readily permits the computation of vector-type inner product operations in a high speed pipelined fashion. Additionally, leading zero's and leadings one's detection is carried out in a multiply parallel fashion so as to rapidly produce post normalization results from the additive portion of the system. The system is implementable on a single integrated circuit chip in which an array multiplier is present so as to minimize inter-chip delays. The architecture of the present invention provides a high speed floating point multiply and accumulate operation with a short pipeline latency.
    • 设计能够以20兆赫系统时钟速率运行的乘法/累加器芯片架构,以便以符号幅度形式接受浮点数,计算其分数部分的乘积,并将分数结果转换成二进制补码形式,以便 积累与以前的产品的结果。 该架构容易地以高速流水线方式计算向量式内积运算。 另外,领先的零和领先的检测是以并行的方式进行的,以便从系统的添加部分快速产生后归一化结果。 该系统可以在单个集成电路芯片上实现,其中存在阵列乘法器以便最小化芯片间延迟。 本发明的架构提供了一种具有短流水线延迟的高速浮点乘法和累加运算。
    • 9. 发明授权
    • Optical sensing apparatus for detecting linear displacement of an object
and method of operation thereof with detector matrix and centroid
detection
    • 用于检测物体的线性位移的光学感测装置及其检测器矩阵和质心检测的操作方法
    • US5212392A
    • 1993-05-18
    • US806507
    • 1991-12-13
    • Ertugrul BerkcanChung-Yih HoJerome J. TiemannFathy F. Yassa
    • Ertugrul BerkcanChung-Yih HoJerome J. TiemannFathy F. Yassa
    • G01D5/30
    • G01D5/30
    • Apparatus for sensing linear displacement of an object between first and second locations along an axis is used to sense conditions that can be made to vary displacement of an object in accordance with the condition, such as temperature, pressure and rotary motion. A light beam projected along an incident light path to the object is reflected along a reflective light path by a reflector affixed to the object. A photo-sensor array in the reflective light path intercepts the reflected light beam and produces samples of the intensity of the reflected image at multiple positions along a line across the array. An imager coupled to the array converts the light samples to representative electrical samples. The resultant light intensity information is provided to an electronic processor which determines a first centroid of the reflected image when the object is at a first location and a second centroid when the object is at a second location, and employs the difference between the first and second centroids to determine the displacement of the object.
    • 用于感测沿着轴线的第一和第二位置之间物体的线性位移的装置用于感测可以根据诸如温度,压力和旋转运动等条件改变物体的位移的条件。 沿着入射光路投射到物体的光束被反射光路通过固定在物体上的反射体反射。 反射光路中的光电传感器阵列截取反射光束,并沿着阵列的一条线的多个位置产生反射图像强度的样本。 耦合到阵列的成像器将光样本转换成代表性的电样品。 所得到的光强度信息被提供给电子处理器,该电子处理器当物体处于第一位置时确定反射图像的第一质心,并且当物体处于第二位置时确定第二质心,并且采用第一和第二 质心来确定物体的位移。
    • 10. 发明授权
    • Versatile data shifter with sticky bit generation capability
    • 具有粘性位生成功能的多功能数据移位器
    • US4901263A
    • 1990-02-13
    • US243359
    • 1988-09-12
    • Chung-Yih HoKarl J. MolnarDaniel A. Staver
    • Chung-Yih HoKarl J. MolnarDaniel A. Staver
    • G06F5/01
    • G06F5/012G06F7/49952
    • A barrel-shift data shifter structure is modified to segregate switches in a switching matrix included therein into those switches as participate in a simple shift as well as in a barrel shift and those switches used only in a barrel shift. The former set of switches is controlled by shift control signals alone, and the latter set of switches responds to shift control signals and to the presence or absence of a rotation enable signal. The number of switches required is substantially smaller than required in a barrel shifter followed in cascade by a simple data shifter. Preferably provision is made for sticky bit generation. The sticky bit is the LOGIC OR response to all bits shifted to less significance than output data.
    • 修改桶形移位数据移位器结构以将其中包括的开关矩阵中的开关分离为参与简单移位以及桶位移动的那些开关,以及仅在桶形移位中使用的开关。 前一组开关由单独的换档控制信号控制,后一组开关响应换档控制信号以及是否有旋转使能信号。 所需的开关数量明显小于桶形移位器中所需的开关数量,然后由简单的数据移位器级联。 优选地设置用于产生粘性位。 粘性位是对所有位的LOGIC OR响应移位到比输出数据更小的意义。