READ-OUT OF PHOTODIODES USING SIGMA-DELTA OVERSAMPLED ANALOG-TO-DIGITAL CONVERTERS
    42.
    发明申请
    READ-OUT OF PHOTODIODES USING SIGMA-DELTA OVERSAMPLED ANALOG-TO-DIGITAL CONVERTERS 审中-公开
    使用SIGMA-DELTA OVERSAMPLED模拟数字转换器读取光刻胶

    公开(公告)号:WO1992005739A1

    公开(公告)日:1992-04-16

    申请号:PCT/US1991006801

    申请日:1991-09-19

    CPC classification number: H03M3/344 H03M3/414

    Abstract: Sigma-delta analog-to-digital conversion is used in sensing apparatus that generates a digital signal descriptive of light energy received by a photosensor, such as one of a plurality of photosensors that together receive various elements of a radiant-energy image. A preamplifier generates an analog output signal responsive to the photocurrent of the photosensor, which analog output signal is undesirably accompanied by wideband noise. The analog output signal is supplied to a sigma-delta analog-to-digital converter, the decimation filter of which not only suppresses in the digital signal a component arising from the quantization noise from the sigma-delta modulator portion of the analog-to-digital converter, but also suppresses a component arising from remnant wideband noise from the preamplifier.

    TURBINE-DRIVEN CONTROL ROD DRIVE
    43.
    发明申请
    TURBINE-DRIVEN CONTROL ROD DRIVE 审中-公开
    涡轮驱动控制杆驱动

    公开(公告)号:WO1992001292A1

    公开(公告)日:1992-01-23

    申请号:PCT/US1991004634

    申请日:1991-06-28

    Abstract: A drive (10) for positioning a control rod (12) in nuclear reactor core (104) is disclosed. The drive includes a turbine rotor (34) joined to hollow spindle (26) in a housing. The spindle has a piston (82) disposed therein and a piston rod (82b) extending therefrom and through a bottom end of the spindle for being joined to the rod. A pressurized fluid is provided into the spindle (26) for exerting a pressure force against the piston (82) for moving the piston for selectively gripping the control rod (12). Interruption of the pressurized fluid to the spindle causes ungripping of the control rod.

    Abstract translation: 公开了一种用于将控制杆(12)定位在核反应堆堆芯(104)中的驱动装置(10)。 该驱动器包括与壳体中的中空心轴(26)连接的涡轮机转子(34)。 主轴具有设置在其中的活塞(82)和从其延伸并穿过主轴的底端的活塞杆(82b),用于与杆接合。 加压流体被提供到主轴(26)中,用于向活塞(82)施加压力,用于移动活塞以选择性地夹持控制杆(12)。 加压流体到主轴的中断会导致控制棒的脱落。

    STEAM COOLED NUCLEAR REACTOR WITH BI-LEVEL CORE
    44.
    发明申请
    STEAM COOLED NUCLEAR REACTOR WITH BI-LEVEL CORE 审中-公开
    蒸汽冷却核反应堆与双层核心

    公开(公告)号:WO1992001290A1

    公开(公告)日:1992-01-23

    申请号:PCT/US1991004638

    申请日:1991-06-28

    Abstract: In accordance with the present invention, a nuclear reactor (100) with a recirculating heat transfer fluid has a bi-level core which provides enhanced flexibility in fuel arrangement. The bi-level core (104) includes two sets of fuel units, one set arranged on a first level (130), the other set arranged on a second level (128). Preferably, fuel units of the second level are arranged in vertical alignment with fuel units of the first level. This permits a fuel unit of the first level (130) to be accessed by removing only the adjacent fuel unit of the second level (128). During refueling operation, fuel units can be shifted from on level to the other, providing additional flexibility in arranging units at various stages of burnup. Preferably, fuel units of the first level (130) are inverted relative to the fuel units of the second level (128). The inversion provides for placing plenum sections of fuel rods in different levels away from each other so that the plenums do not introduce a discontinuity in neutron generation, and allows for more uniform axial fuel burnup. The bi-level core allows fuel to be initially positioned in the second level for conversion of fertile fuel to fissile fuel, and then repositioned to the first level for more complete axial burnup. In a preferred embodiment the first level boils water to generate saturated steam, and the second level is cooled by the saturated steam and generates superheated steam.

    SEED AND BLANKET FUEL ARRANGEMENT FOR DUAL-PHASE NUCLEAR REACTORS
    45.
    发明申请
    SEED AND BLANKET FUEL ARRANGEMENT FOR DUAL-PHASE NUCLEAR REACTORS 审中-公开
    双相核反应堆的种子和棉花燃料装置

    公开(公告)号:WO1992001288A1

    公开(公告)日:1992-01-23

    申请号:PCT/US1991004637

    申请日:1991-06-28

    Abstract: Fresh fuel bundles are inserted into core locations with small coolant flow orifices, while mid-life fuel bundles are inserted into core locations with large coolant flow locations. Thus, fissile fuel production is promoted at the expense of fissioning early in a bundle lifetime, increasing the effective quantity of fuel available for energy production. Moreover, fissioning is promoted at the expense of conversion later in the bundle lifetime to enhance reactivity of the remaining fissile material and to minimize the further production of fissile fuel. The net result is longer fuel lifetimes and reduced radioactive waste.

    Abstract translation: 新鲜的燃料束被插入到具有小的冷却剂流动孔的核心位置,而中等寿命的燃料束被插入具有大的冷却剂流动位置的核心位置。 因此,在束缚生命早期以牺牲裂变为代价促进了易​​裂变燃料生产,增加了可用于能源生产的燃料的有效数量。 此外,在束缚寿命之后,为了提高剩余的裂变材料的反应性并使可再生燃料的进一步生产最小化,分散作用得到改善。 最终的结果是燃料寿命更长,放射性废物减少。

    SIGNAL DISTORTION REMOVAL
    46.
    发明申请
    SIGNAL DISTORTION REMOVAL 审中-公开
    信号失真消除

    公开(公告)号:WO1992000646A1

    公开(公告)日:1992-01-09

    申请号:PCT/US1991004636

    申请日:1991-06-24

    CPC classification number: H04N5/211

    Abstract: Deghosting apparatus for eliminating multipath signal components in a received transmitted television signal incorporates a training signal which is a finite duration sequence of repetitions of a 2n-1 pseudorandom sequence. The 2n-1 pseudorandom sequences (12) are mapped into 2r sample intervals at either the transmitter (13) or the receiver (28) to facilitate fast Fourier transform processing. Power spectra of the received and mapped training signal (30) and a stored version (44) of the training signal are deconvolved (36) with the deconvolution coefficients produced in logarithmic form. The logarithms (32, 34) are inverse Fourier transformed (38) to produce (40) delay coefficients related to the time of occurrence of the multipath signals, which coefficients are utilized to program variable delay circuitry in an adaptive filter (42) to cancel the multipath components.

    CAPACITIVE STRUCTURES FOR WEIGHTED SUMMATION, AS USED IN NEURAL NETS
    47.
    发明申请
    CAPACITIVE STRUCTURES FOR WEIGHTED SUMMATION, AS USED IN NEURAL NETS 审中-公开
    用于神经网络的加权建立的电容结构

    公开(公告)号:WO1991018360A1

    公开(公告)日:1991-11-28

    申请号:PCT/US1991002855

    申请日:1991-04-25

    CPC classification number: G06N3/063 G06N3/0635 G11C27/024

    Abstract: The capacitances of a pair of capacitors associated with a neural net are arranged to be complementary in value, even where their differential capacitance is subjected to variation, so the sum of the capacitances remains equal to a constant, Ck. Each of a set of component capacitors with capacitances related in accordance with powers of two is selected to be a component of one or the other of the pair of capacitors, the selecting being done by field effect transistors (FETs) operated as transmission gates. The gate signals for the FETs are respective ones of the bits in a binary number stored in a word storage element of a semiconductor memory.

    Abstract translation: 与神经网络相关联的一对电容器的电容被设置为在值上是互补的,即使其差分电容经受变化,因此电容的总和保持等于常数C k。 选择具有与两个功率相关的电容的一组组件电容器作为一对电容器中的一个或另一个的组件,该选择由作为传输门控的场效应晶体管(FET)完成。 用于FET的栅极信号是存储在半导体存储器的字存储元件中的二进制数中的相应位。

    POLYMER BLENDS OF POLYCARABONATE, STYRENIC TERPOLYMER AND GLASS FIBERS
    50.
    发明申请
    POLYMER BLENDS OF POLYCARABONATE, STYRENIC TERPOLYMER AND GLASS FIBERS 审中-公开
    聚碳酸酯,苯乙烯和玻璃纤维的聚合物混合物

    公开(公告)号:WO1991006605A1

    公开(公告)日:1991-05-16

    申请号:PCT/US1990005953

    申请日:1990-10-17

    Abstract: Polymer blend compositions comprise a polycarbonate, a styrene-acrylonitrile-maleic anhydride terpolymer and from about 5 to about 40 weight percent glass fibers. Preferably, the compositions comprise from about 5 to about 65 weight percent of the polycarbonate and from about 10 to about 80 weight percent of the terpolymer. The compositions may optionally include a small amount of an ABS resin in order to improve the compatibility of the polycarbonate and the terpolymer. These compositions exhibit advantageous improved combinations of such properties as heat resistance, strenght, and modulus which allows the blend to be used in engineering thermoplastic applications.

    Abstract translation: 聚合物共混物组合物包含聚碳酸酯,苯乙烯 - 丙烯腈 - 马来酸酐三元共聚物和约5至约40重量%的玻璃纤维。 优选地,组合物包含约5至约65重量%的聚碳酸酯和约10至约80重量%的三元共聚物。 为了提高聚碳酸酯和三元共聚物的相容性,组合物可以任选地包括少量的ABS树脂。 这些组合物显示出诸如耐热性,强度和模量的这种性能的有利改进的组合,其允许共混物用于工程热塑性应用。

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