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    • 1. 发明授权
    • Manikin synchronization system
    • 人体模型同步系统
    • US3888020A
    • 1975-06-10
    • US39835773
    • 1973-09-18
    • ITT
    • KRAUSE IRVING A
    • G09B23/32
    • G09B23/32
    • A manikin synchronization system is described to cause recorded aural sounds to be coincident with mechanical motions including the effects of the breathing cycles. The synchronization system interfaces with the mechanical and audio systems in order to bring heart sounds, breathing cycles and mechanical motions into time coincidence. The synchronizing system accepts pulses from a mechanical master timing shaft which indicates the mid-points of the breathing cycles. These pulses are applied to the synchronization system which, in response to additional synchronization information on an audio tape, indicates whether the audio signal is early or late with respect to the mechanical system. Accordingly, a voltage controlled oscillator produces an output proportional to the indication to control the tape drive and create synchronization of the audio and mechanical systems.
    • 描述人体模型同步系统以使记录的听觉声音与包括呼吸周期的影响的机械运动一致。 同步系统与机械和音频系统接口,以便将心音,呼吸周期和机械运动带入时间巧合。 同步系统接收来自机械主定时轴的脉冲,其指示呼吸周期的中点。 这些脉冲被施加到同步系统,该同步系统响应于音频磁带上的附加同步信息,指示音频信号是相对于机械系统的早还是晚。 因此,压控振荡器产生与指示成比例的输出以控制磁带驱动器并创建音频和机械系统的同步。
    • 5. 发明授权
    • Phase locked loop
    • 相位锁定环
    • US3683279A
    • 1972-08-08
    • US3683279D
    • 1969-12-17
    • ITT
    • WEINBERG MURRAYKRAUSE IRVING A
    • H03L7/06H04B1/59H04B7/20
    • H03L7/06
    • An oscillator in a spacecraft transponder or repeater is frequency stabilized by a phase locked loop with reference signal therefor having a frequency (N/M) F being received in the repeater from a ground station. The reference signal is processed in the repeater and returned to the ground station where it is monitored to detect when the pull-in range of the loop is exceeded. When this condition is detected, the frequency of the reference signal is swept in the ground station until the frequency of the reference signal and frequency of the signal of the oscillator in the repeater is within said pull-in range. The oscillator frequency F is divided by M and the phase comparator includes a first tuned input circuit to respond to a frequency (N/M) F, a second turned input circuit to respond to the nth harmonic of the frequency F/M and a phase error detecting circuit to produce a control signal used to stabilize the frequency of the oscillator.
    • 航天器应答器或中继器中的振荡器由锁相环频率稳定,其参考信号具有从地面站在中继器中接收的频率(N / M)F。 参考信号在中继器中处理,并返回到地面站,在那里进行监控,以检测何时超过环路的拉入范围。 当检测到该条件时,参考信号的频率在地面站中扫描,直到参考信号的频率和中继器中的振荡器的信号的频率在所述拉入范围内。 振荡器频率F除以M,相位比较器包括第一调谐输入电路,以响应频率(N / M)F,第二转换输入电路以响应频率F / M的第n次谐波,相位 误差检测电路产生用于稳定振荡器频率的控制信号。