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48 条记录 (耗时 0.028 秒)

    Optical A/D conversion using asymmetrical-neural-networks
    46.
    发明授权
    Optical A/D conversion using asymmetrical-neural-networks 失效
    使用非对称神经网络的光学A / D转换

    公开(公告)号：US5264849A

    公开(公告)日：1993-11-23

    申请号：US917330

    申请日：1992-07-23

    申请人： Hiroshi Kondoh ,  Shiro Satoh

    发明人： Hiroshi Kondoh ,  Shiro Satoh

    IPC分类号： G02F7/00 ,  H03M1/40 ,  H03M1/22

    CPC分类号： G02F7/00 ,  H03M1/40

    摘要： An analog signal having a value A is converted into an n-bit digital signal. An optical calculation part performs a part of a calculation shown below for an A/D conversion as below.U.sub.i =[{{.SIGMA.(W.sub.ij .times.X.sub.j)+h.sub.i }.times.V}+A].times.Si . . . (1)The calculation of the equation (1) is performed fori=0, 1, . . . , n-1 respectively;the W.sub.ij is 0 if i.gtoreq.j.gtoreq.0, or -(2**j) if j>i.gtoreq.0; hi is -(2**i), or -{(2**i)-.epsilon.}(.vertline..epsilon..vertline..ltoreq.1);V and S.sub.i respectively have any desired positive values and the said .SIGMA. represents a summation of each expression following thereto for j=0, 1, . . . , n-1. The thresholding compares the result U.sub.i of the calculation of each equation (1) to a threshold value, and then 1 or 0 is selected. The result of the selection is then assigned to X.sub.i. The calculation of the equation (1) is then performed repeatedly until X.sub.i converge on solutions. The solution of each X.sub.i is then provided as digital values of the n-bit digital signal.

    摘要翻译： 具有值A的模拟信号被转换成n位数字信号。 光学计算部分执行如下所示的用于A / D转换的计算的一部分，如下。 Ui = [{{SIGMA（WijxXj）+ hi} xV} + A] xSi。 。 （1）对于i = 0,1，...进行等式（1）的计算。 。 。 ，n-1; 如果i> / = j> / = 0，则Wij为0，或者如果j> i> / = 0则为 - （2 ** j） 嗨是 - （2 ** i），或 - （（2 ** i） - ε）（|ε| | = 1）; V和Si分别具有任何期望的正值，并且所述SIGMA表示对于j = 0,1，之后的每个表达式的和。 。 。 ，n-1。 阈值将每个等式（1）的计算结果Ui与阈值进行比较，然后选择1或0。 然后将选择的结果分配给Xi。 然后重复执行等式（1）的计算，直到Xi收敛于解。 然后，将每个Xi的解决方案提供为n位数字信号的数字值。

    Wideband (DC-50 GHz) MMIC FET variable matched attenuator
    47.
    发明授权
    Wideband (DC-50 GHz) MMIC FET variable matched attenuator 失效
    宽带（DC-50 GHz）MMIC FET可变匹配衰减器

    公开(公告)号：US4837530A

    公开(公告)日：1989-06-06

    申请号：US132088

    申请日：1987-12-11

    申请人： Hiroshi Kondoh

    发明人： Hiroshi Kondoh

    IPC分类号： H01L29/812 ,  H01L21/338 ,  H01P1/22 ,  H03H11/24

    CPC分类号： H01P1/227

    摘要： A FET variable absorptive attenuator utilizes FETs as variable resistors controlled by voltages applied to their gate terminals, the FETs preferably being arranged in a T configuration with resistors connected in parallel with two series FETs, as well as a shunt FET in the form of a distributed shunt FET. One control voltage adjusts the resistances of the series FETs, and another controls the resistance of the distributed shunt FET. A proper combination of the two control voltages yields a desired level of attenuation with optimum input/output impedance matching. The resistors allow the series FETs to be biased well below their pinch-off voltages to minimize the parasitic capacitances of the series FETs at relatively high attenuation settings, improving the isolation for high attenuation settings at relatively high frequencies and also enabling the attenuator to function as a switch. They also improve the power-handling capability at high attenuation settings. The distributed shunt FET is split into several cells interconnected by inductive elements, providing a low insertion loss at maximum attenuation, as well as decreasing the parasitic capacitance of the shunt FET. The effects of this lower capacitance at relatively low attenuation settings can be more effectively counteracted by the inductive elements, extending the dynamic range of attenuation at relatively high frequencies. Also, the distributed shunt FET interconnected by the inductive elements compensates for the parasitic capacitances of the series FETs at relatively high attenuation settings, which yields increased attenuation with increasing frequency. Finally, the cutoff frequency of the attenuator at relatively low attenuation settings is increased.

    摘要翻译： FET可变吸收衰减器利用FET作为由施加到其栅极端子的电压控制的可变电阻器，FET优选地布置成具有与两个串联FET并联的电阻器的T配置，以及分布式 分流FET。 一个控制电压调节串联FET的电阻，另一个控制分布式分流FET的电阻。 两个控制电压的适当组合通过最佳的输入/输出阻抗匹配产生所需的衰减水平。 电阻器允许串联FET远低于其钳位电压，以在相对较高的衰减设置下最小化串联FET的寄生电容，从而改善在较高频率下的高衰减设置的隔离度，并且还使衰减器的功能如 一个开关 它们还可以在高衰减设置下提高功率处理能力。 分布式并联FET被分解成由电感元件互连的几个单元，在最大衰减时提供低插入损耗，以及减小并联FET的寄生电容。 在较低衰减设置下，这种较低电容的影响可以被电感元件更有效地抵消，从而在相对高的频率下延长了衰减的动态范围。 此外，由感性元件互连的分布式并联FET在相对较高的衰减设置下补偿串联FET的寄生电容，这会随着频率的增加而产生增加的衰减。 最后，衰减器在较低衰减设置下的截止频率增加。

    Radial plunger pump driven by a motor having seal members for protecting the motor from exposure to working fluid
    48.
    发明授权
    Radial plunger pump driven by a motor having seal members for protecting the motor from exposure to working fluid 失效
    径向柱塞泵由具有用于保护马达免受暴露于工作流体的密封构件的马达驱动

    公开(公告)号：US4776768A

    公开(公告)日：1988-10-11

    申请号：US80764

    申请日：1987-08-03

    申请人： Hiroshi Kondoh ,  Akihiko Sawada ,  Yoshiaki Ito ,  Kouji Nagai ,  Hideyuki Koiki

    发明人： Hiroshi Kondoh ,  Akihiko Sawada ,  Yoshiaki Ito ,  Kouji Nagai ,  Hideyuki Koiki

    IPC分类号： B60T13/14 ,  F04B1/107 ,  F04B17/03 ,  F16J15/00 ,  F16J15/32 ,  F04B1/04

    CPC分类号： B60T13/148 ,  F04B1/107 ,  F04B17/03 ,  F16J15/004 ,  F16J15/3276

    摘要： A radial plunger pump is provided which includes a motor housing having a motor mounted therein. A pump housing is further provided and has a pump portion defined therein. A shaft is mounted between the motor and the pump portion so that the pump portion operates when rotation of the motor is transmitted to the pump portion by rotation of the shaft. A constant pressure chamber is defined between a first seal member and a second seal member both of which are fixed to the pump housing. The leakage of oil from the pump housing toward the motor housing is prevented by the first and second seal members and the constant pressure chamber. Further, a plate is provided within the constant pressure chamber which rotates with the shaft and prevents the entry of foreign objects into the constant pressure chamber through a constant pressure port which communicates to the ambient atmosphere.

    摘要翻译： 提供径向柱塞泵，其包括其中安装有马达的马达壳体。 还设置有泵壳体，并且其中限定有泵部分。 轴安装在电动机和泵部之间，使得当电动机的旋转通过轴的旋转传递到泵部分时，泵部分运行。 在第一密封构件和第二密封构件之间限定恒压室，二者均固定在泵壳体上。 通过第一和第二密封构件和恒压室来防止油从泵壳体向马达壳体的泄漏。 此外，在与所述轴一起旋转的所述恒压室内设置有板，并且防止异物通过与所述环境大气连通的恒压口进入所述恒压室。