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    • 1. 发明授权
    • Phase sensitive demodulator
    • 相敏感解调器
    • US3743952A
    • 1973-07-03
    • US3743952D
    • 1971-08-09
    • MC DONNELL DOUGLAS CORP
    • COMLEY WHAMMONTRE M
    • H03D1/22H03D3/02
    • H03D1/22
    • Phase sensitive demodulator including a track and store unit having input, output and switching terminals, and means for producing a phase-shifted switching signal from a carrier to operate the unit. A modulated carrier signal is applied to the input terminal of the unit, and the switching signal is applied to its switching terminal to produce at the output terminal, an output signal which closely approximates the envelope of the modulated carrier signal and, therefore, the original modulating signal. A double-ended embodiment of the demodulator includes a pair of complementary track and store units, and means for producing a corresponding pair of phase-shifted switching signals from a carrier to operate the units in a push-pull mode. Both single-ended and double-ended embodiments of the demodulator are implemented entirely of linear analog and logic devices.
    • 相位敏感解调器,包括具有输入,输出和开关端子的轨道和存储单元,以及用于产生来自载体操作该单元的相移切换信号的装置。 调制载波信号被施加到单元的输入端,并且切换信号被施加到其开关端以在输出端产生紧密地接近调制载波信号的包络的输出信号,因此,原始 调制信号。 解调器的双端实施例包括一对互补轨道和存储单元,以及用于从载波产生相应的一对相移开关信号的装置,以在推挽模式下操作该单元。 解调器的单端和双端实施例都完全由线性模拟和逻辑器件实现。
    • 2. 发明授权
    • Display generating means creating isometric projections of a family of curves
    • 显示生成方法创建曲线族的异质投影
    • US3721855A
    • 1973-03-20
    • US3721855D
    • 1970-08-13
    • MC DONNELL DOUGLAS CORP
    • COMLEY W
    • G06G7/04H01J29/70
    • G06G7/04
    • Means for extending the ability of an analog or hybrid computer which allow solution of problems, and various predetermined displays of the solutions as functions of additional independent variables of the operator''s choice. The means include a staircase generator for varying an independent variable for each computation of the problem and peak and level sensing circuits so that a three-dimensional surface representing the solution to the problem may be displayed as a family of curves, as an isometric projection, as a cross-plot of a time history, as a cross-plot of positive or negative peaks, and as a conformal map.
    • 用于扩展允许解决问题的模拟或混合计算机的能力以及解决方案的各种预定显示作为操作者选择的附加独立变量的函数的手段。 该装置包括用于为问题的每次计算改变独立变量的阶梯发生器以及峰值和水平感测电路,使得表示该问题的解决方案的三维表面可以作为等距投影而显示为一系列曲线, 作为时间历史的交叉图,作为正或负峰的交叉图,以及作为保形图。