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    Phase modulator circuit for encoding two binary digits per cycle of sine wave carrier
    81.
    发明授权
    Phase modulator circuit for encoding two binary digits per cycle of sine wave carrier 失效
    用于对每个正弦波载波周期的两个二进制数进行编码的相位调制器电路

    公开(公告)号：US4996503A

    公开(公告)日：1991-02-26

    申请号：US541825

    申请日：1990-06-21

    Applicant: William Hotine

    Inventor： William Hotine

    IPC: H04L27/24

    CPC classification number: H04L27/24

    Abstract: A phase modulator circuit for encoding successive serial binary digits at the zero crossing points of a sine wave carrier. A digital one is encoded as a brief phase deviation of the carrier and a digital zero as the normal wave form. The carrier frequency is one-half the clock frequency of the encoded data. A digital processing circuit operating at one-half the clock frequency of the data controls one shot multivibrators which control electronic switches to deviate the carrier.

    Abstract translation: 一个相位调制器电路，用于在正弦波载波的过零点处编码连续的串行二进制数字。 数字信号被编码为载波的简单相位偏移，数字零作为正常波形编码。 载波频率是编码数据的时钟频率的一半。 数据处理电路以数据的时钟频率的一半工作，控制控制电子开关偏移载波的单片多谐振荡器。

    Telemetry receiver phase detector output signal processing circuit
    82.
    发明授权
    Telemetry receiver phase detector output signal processing circuit 失效
    电报接收相位检测器输出信号处理电路

    公开(公告)号：US3831096A

    公开(公告)日：1974-08-20

    申请号：US24667672

    申请日：1972-04-24

    Applicant: ITT

    Inventor： BROWN H

    IPC: H04L25/49 ,  H04L27/24 ,  H04B1/10

    CPC classification number: H04L25/4925 ,  H04L27/24

    Abstract: A doublet signal detection arrangement using a phase lock loop to generate a constant timing signal. A sampling technique operating from the constant timing signal reproduces one side of the doublet with essentially perfect shape and no edge jitter. The timing signal can then be used to further decode the signal.

    Abstract translation: 一种使用锁相环产生恒定定时信号的双信号检测装置。 从恒定定时信号操作的采样技术以基本上完​​美的形状和没有边缘抖动再现双面的一侧。 然后可以使用定时信号来进一步解码该信号。

    High density communications system
    83.
    发明授权
    High density communications system 失效
    高密度通信系统

    公开(公告)号：US3665474A

    公开(公告)日：1972-05-23

    申请号：US3665474D

    申请日：1970-01-12

    Applicant: AMSCAT CORP

    Inventor： THAYER OLIN E

    IPC: H04L25/49 ,  H04L27/02 ,  H04L27/24 ,  H04B1/04 ,  H04B1/16

    CPC classification number: H04L27/02 ,  H04L25/4904 ,  H04L25/4925 ,  H04L27/24

    Abstract: Binary data is encoded in sinusoidal form. Two complementry sine waves at the binary data frequency are generated; one is positively biased, the other is negatively biased. The binary data selectively gates each sine wave. At the receiver, a zero dc level sine wave is recovered and clock pulses are derived from the peaks of the recovered wave. One binary level is produced when a clock pulse coincides with a positive peak of the incoming sinusoid; the other binary level is produced when a clock pulse coincides with a negative peak of the incoming sinusoid.

    Abstract translation: 二进制数据以正弦形式编码。 产生二进制数据频率的两个互补正弦波; 一个是有偏见的，另一个是有偏见的。 二进制数据选择性地对每个正弦波进行门控。 在接收器处，恢复零直流电平正弦波，并从恢复的波的峰值导出时钟脉冲。 当时钟脉冲与入射正弦曲线的正峰值一致时，产生一个二进制电平; 当时钟脉冲与入射正弦曲线的负峰值一致时，产生另一个二进制电平。

    Data transmission system, utilizing ac line frequency as clock
    84.
    发明授权
    Data transmission system, utilizing ac line frequency as clock 失效
    数据传输系统，利用交流线路频率作为时钟

    公开(公告)号：US3652876A

    公开(公告)日：1972-03-28

    申请号：US3652876D

    申请日：1970-04-30

    Applicant: QUASAR MICROSYSTEMS INC

    Inventor： BAUM ELLIOT ,  LOEWENGART HARRY R

    IPC: H04L27/24 ,  H03K1/12 ,  H03K17/60

    CPC classification number: H04L27/24

    Abstract: A data transmission system is described in which bipolar data signals are derived from an AC signal. The system comprises a transformer having a primary winding receiving the AC signal and a secondary winding. The ends of the secondary winding are respectively connected to switch means the control terminals of which receive data signals. The bipolar signal derived at the center tap of the secondary winding reflects the data signal inputs to the switch means.

    Abstract translation: 描述了从AC信号导出双极性数据信号的数据传输系统。 该系统包括具有接收AC信号的初级绕组和次级绕组的变压器。 次级绕组的端部分别连接到其控制端接收数据信号的开关装置。 在次级绕组的中心抽头导出的双极信号将数据信号输入反映到开关装置。

    Binary to pulse waveform converter
    85.
    发明授权
    Binary to pulse waveform converter 失效
    二进制脉冲波形转换器

    公开(公告)号：US3632876A

    公开(公告)日：1972-01-04

    申请号：US3632876D

    申请日：1969-10-16

    Applicant: MOTOROLA INC

    Inventor： BENCH STEPHEN M

    IPC: H04L27/24 ,  H04L15/00

    CPC classification number: H04L27/24

    Abstract: A sequence of binary data bits are transformed into a waveform consisting of a series of half-cycles of square waves of two different frequencies, the half-cycles being of alternating phase and each frequency corresponding to one of the two binary conditions. This sequence of half-cycle square waves then may be transmitted as a stream of exact half-cycles of audio tones.

    Abstract translation: 一系列二进制数据位被转换为由两个不同频率的一系列半波形的半波形组成的波形，半周期是交替相位，每个频率对应于两个二进制条件之一。 然后可以将这个半周期方波序列作为音频音调的精确半周期流传输。

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