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75 条记录 (耗时 0.015 秒)

    Faceted reflector for headlamps
    51.
    发明公开
    Faceted reflector for headlamps 失效
    面向反射器的HEADLAMPS

    公开(公告)号：EP0257946A3

    公开(公告)日：1990-01-24

    申请号：EP87307231.8

    申请日：1987-08-14

    申请人： GENERAL ELECTRIC COMPANY

    发明人： Kosmatka, Walter John

    IPC分类号： F21M3/08

    CPC分类号： F21S41/336

    摘要： A multi-faceted reflector for a headlamp of a motor vehicle is disclosed. The motor vehicle headlamp has the desired optics, in the form of facets, placed entirely on the reflective surfaces of the reflector. The reflective surfaces are comprised of a plurality of discrete reflective surfaces having right (i.e., surfaces of a parabolic shape in the vertical plane and being linear or cylindrical in the horizontal plane) parabolical cylindrical surfaces (24) and discrete simple rotated parabolical surfaces (20). All of the reflective surfaces are located relative to the light source (12) of the headlamp. The parabolic cylindrical surfaces (24), serving as spreadng facets create a lateral spread of the light developed by the light source of the lamp, whereas, the simple rotated parabolic surfaces (20), serving as bending facets, create a shifting, relative to the light source, of the projected image of the light source. The shifted light forms the compact high intensity portion of the light output of the headlamp which cooperates with the lateral spread light to form a compact light output which serves the illumination needs of the motor vehicle.

    Data switching for combined bus and star data network
    52.
    发明公开
    Data switching for combined bus and star data network 失效
    用于组合总线和星数据网络的数据切换

    公开(公告)号：EP0226963A3

    公开(公告)日：1989-08-30

    申请号：EP86117254.2

    申请日：1986-12-11

    申请人： GENERAL ELECTRIC COMPANY

    发明人： Puerzer, Bernard George ,  Morse III, Royal Ray

    IPC分类号： G06F15/16 ,  H04L11/16

    CPC分类号： H04L12/28

    摘要： A dual-data-rate bus system employs a first data rate in a star bus system external to a data switch a higher data rate on a bus internal to the data switch. The internal data rate is selected high enough to permit simultaneous data communication between all suitable pairs of external nodes without data loss. In the preferred embodiment, external communication between the data switch and external nodes employs carrier-sense, multiple-access, with collision detection and the internal bus employs parallel communication with polling or token passing. The internal data rate is at least n/2 times the data rate of each external link, where n is the number of external links. In a further embodiment, the internal bus employs serial carrier-sense, multiple-access, with collision detection operating at a data rate at least 10 percent greater than n/2 times the data rate of each external link.

    Light box
    53.
    发明公开
    Light box 失效
    灯箱

    公开(公告)号：EP0228288A3

    公开(公告)日：1989-07-26

    申请号：EP86310126.7

    申请日：1986-12-23

    申请人： GENERAL ELECTRIC COMPANY

    发明人： Nosker, Richard William

    IPC分类号： G02B19/00 ,  F21V7/00 ,  F21V5/00 ,  G02F1/133

    CPC分类号： F21V13/04 ,  G02B19/0028 ,  G02B19/0047 ,  G02F1/133526

    摘要： A light box comprises a source of light (12), a reflector (14) and a Fresnel lens (38). The lens (38) provides nearly constant illumination of an object such as a liquid crystal cell (50) by collimating light parallel to a normal to the cell. Thus the cell (50) will exhibit a nearly uniform electro-optical response. The reflector (14) preferably is parabolic, while the light source (12) preferably is a line source such as a flourescent tube.

    Soft start solid state switch
    56.
    发明公开
    Soft start solid state switch 失效
    Halbleiterschalterfürweichen开始。

    公开(公告)号：EP0285417A2

    公开(公告)日：1988-10-05

    申请号：EP88302885.4

    申请日：1988-03-30

    申请人： GENERAL ELECTRIC COMPANY

    发明人： Carlson, Peter John ,  Hodgins, Robert George

    IPC分类号： H05B39/02

    CPC分类号： H05B39/02

    摘要： The junction temperature rise of a power MOSFET (12;202;402) serially connected to a lamp (32;204;404) whose resistance nonlinearly increases during turn-on is moderated by the use of control circuitry which initially sets up a relatively low essentially constant current flow through the lamp and transistor and then automatically after the lamp resistance reaches a preselected level, the lamp is allowed to draw significantly more current. Alternatively, there is initially an essentially constant flow of current to the MOSFET gate, causing a gradual turn-on, until the lamp resistance reaches the preselected level. The size and therefore cost of the power MOSFET is reduced significantly because the magnitude of the current spike generated by turning on the lamp is significantly reduced by the use of the novel control circuitry.

    摘要翻译： 串联连接到其导通电阻非线性增加的灯（32; 204; 404）的功率MOSFET（12; 202; 402）的结温升高通过使用最初设置相对较低的控制电路来缓和 基本上恒定的电流流过灯和晶体管，然后在灯电阻达到预选电平后自动流动，灯被允许抽出明显更多的电流。 或者，最初有一个基本恒定的电流流向MOSFET栅极，导致逐渐导通，直到灯电阻达到预选电平。 通过使用新颖的控制电路，功率MOSFET的尺寸和因此的成本显着降低，因为通过导通灯而产生的电流尖峰的幅度显着降低。

    Isolated power transfer and patient monitoring system with interference rejection useful with NMR apparatus
    57.
    发明公开
    Isolated power transfer and patient monitoring system with interference rejection useful with NMR apparatus 失效
    绝缘电力传输，并与核磁共振用于抑制干扰的设备病人监护系统。

    公开(公告)号：EP0275699A1

    公开(公告)日：1988-07-27

    申请号：EP87311353.4

    申请日：1987-12-23

    申请人： GENERAL ELECTRIC COMPANY

    发明人： Stormont, Robert Steven ,  Hashoian, Ralph Sarkis ,  Buchwald, Randall Henry

    IPC分类号： A61B5/04 ,  H03K17/687

    CPC分类号： G01R33/28 ,  A61B5/04282 ,  A61B5/055

    摘要： There is provided a power source (124) for continuously energizing electrically isolated devices (110, 112) used to monitor the physiological state of a subject undergoing an examination in an NMR scanner having a magnet, RF and gradient coils. The power source (124) is made up of a first element (126) for generating energy of one type and a second element (128) for receiving this energy and converting it to a second energy type used to energized the electrically isolated devices. The first and second elements are operatively coupled to one another through an electrically isolated medium (130) to permit continuous transfer of energy from the first to the second element and to reject interference due to the NMR apparatus subsystems.
    In one embodiment the first element (126) may be an array of light-emitting diodes (138), while the second element (128) may be an array of photovoltaic cells (140). In another embodiment, the first and second elements may be ultrasonic transducers coupled through air or a ceramic substrate (146).

    摘要翻译： 提供了一种用于连续激励电隔离装置（110，112）用于监视在NMR扫描器具有磁体，RF和线圈接受检查的梯度在受试者的生理状态的功率源（124）。 所述动力源（124）由用于产生一种类型的能量和用于接收该能量并将其转换成用于通电的电隔离装置的第二能量类型的第二元件（128）的第一元件（126）的。 所述第一和第二元件可操作地通过在电隔离介质（130），耦合到彼此，以允许从所述第一能量的连续传递到第二元件，拒绝由于NMR装置子系统的干扰。 在一个实施例中的第一元件（126）可以是发光二极管（138）阵列，而第二元件（128）可以在光伏电池（140）的阵列。 实施例。在又一个中，第一和第二元件可以是通过空气或陶瓷衬底（146），其耦合超声换能器。

    Frequency limited resonant regulator
    58.
    发明公开
    Frequency limited resonant regulator 失效
    常见问题

    公开(公告)号：EP0275698A1

    公开(公告)日：1988-07-27

    申请号：EP87311352.6

    申请日：1987-12-23

    申请人： RCA Thomson Licensing Corporation

    发明人： Truskalo, Walter

    IPC分类号： G05F1/13 ,  H02M3/315

    CPC分类号： H02M3/3376 ,  Y02B70/1433

    摘要： In a resonant regulator power supply, a resonant circuit (10) is coupled to a source (S1,S2) of alternating input voltage that is controllable in operating frequency. A power transformer primary winding (W1) is coupled across the capacitive element (C O ) of the resonant circuit (10) for generating an output voltage across a secondary winding (W3). A control circuit (50) varies the operating frequency in a negative feedback loop to regulate the output voltage on the positive slope of the frequency characteristic curve. A frequency limiting circuit (60) prevents the operating frequency from passing through the resonance frequency of the resonant circuit.

    摘要翻译： 在谐振调节器电源中，谐振电路（10）耦合到可操作频率可控的交流输入电压源（S1，S2）。 电源变压器初级绕组（W1）耦合在谐振电路（10）的电容元件（CO）两端，用于产生跨越次级绕组（W3）的输出电压。 控制电路（50）在负反馈回路中改变工作频率，以调节频率特性曲线的正斜率上的输出电压。 频率限制电路（60）防止工作频率通过谐振电路的谐振频率。

    Photographic contrast masking with a photochromic body
    59.
    发明公开
    Photographic contrast masking with a photochromic body 失效
    摄影师普拉特。

    公开(公告)号：EP0161745A2

    公开(公告)日：1985-11-21

    申请号：EP85301370.4

    申请日：1985-02-28

    申请人： PAPILLON COLOUR LABORATORIES LIMITED

    发明人： Banks, Paul

    IPC分类号： G03C5/02

    CPC分类号： G03C5/02 ,  Y10S430/163

    摘要： @ A contrast mask for a transparent photographic original may be formed by illuminating a photochromic body (11, 41) through the original with white light. Preferably the photochromic body (11,41) is optically neutral (grey) and contains a silver halide as a photochromically active substance. Preferably the mask-forming exposure is performed separately from the photographic exposure of a recording medium through the original and the mask, by a different light source (27). The optical contrast range of the mask can be varied in response to the optical contrast range of the original by varying the amount of the mask-forming exposure. This variation is preferably effected by varying the number of flashes of the light source (27).
    The photochromic body is preferably incorporated in the holder (1, 33) for the transparent original.
    Photographic reproduction apparatus may include an automatic densitometer, the output of which controls the amount of the mask-forming exposure.

    摘要翻译： 可以通过用白光照射原始的光致变色体（11,41）来形成用于透明照相原稿的对比掩模。 优选地，光致变色体（11,41）光学中性（灰色），并且含有作为光致变色活性物质的卤化银。 优选地，通过不同的光源（27）通过原稿和掩模从记录介质的照相曝光分开进行掩模形成曝光。 掩模的光学对比度范围可以通过改变掩模形成曝光的量而响应于原稿的光学对比度范围而变化。 该变化优选通过改变光源（27）的闪光数来实现。 光致变色体优选并入用于透明原件的保持器（1,33）中。 ... <？>摄影再现设备可以包括自动密度计，其输出控制掩模形成曝光量。

    Backporch gating pulse generator subject to disabling during vertical sync interval
    60.
    发明公开
    Backporch gating pulse generator subject to disabling during vertical sync interval 失效
    在垂直同步信号被切换后门廊门脉冲发生器。

    公开(公告)号：EP0145491A2

    公开(公告)日：1985-06-19

    申请号：EP84308667.9

    申请日：1984-12-13

    申请人： RCA LICENSING CORPORATION

    发明人： Yost, Thomas Dale

    IPC分类号： H04N9/72

    CPC分类号： H04N5/10 ,  H04N9/72

    摘要： In a TV receiver, a line-rate gating pulse generator includes a source (50) of line-rate timing pulses of «backporch» timing relative to the horizontal blanking intervals of received TV signals. Normally, the time constant of a capacitor charging circuit (62, 63), enabled by the leading edge of each timing pulse, is determinative of a fixed, finite width for output gating pulses which are generated in response to the timing pulses (TP). However, during the appearance of a field-rate pulse (DP) (e.g., vertical drive pulse), the charging circuit is altered such as to establish a zero width for the output gating pulses, resulting in a desired field-rate blanking of the line-rate gating pulse output.