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公开(公告)号：US4415964A
公开(公告)日：1983-11-15
申请号：US335059
申请日：1981-12-28
IPC分类号： H02M1/10
CPC分类号： H02M1/10
摘要： A power supply which automatically produces approximately the same output voltage from two or more input voltages where the input voltages have substantially different magnitudes.
摘要翻译： 电源自动产生两个或多个输入电压大致相同的输出电压，其中输入电压具有基本不同的幅度。
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公开(公告)号：US6078299A
公开(公告)日：2000-06-20
申请号：US58668
申请日：1998-04-10
摘要： A multi-phase coupler including a noise reduction circuit which provides two output signals which are separately shifted in phase with respect to an input radio frequency (RF) signal. The input RF signal is capacitively phase-shifted to lead the phase of an input RF signal to provide one output signal and is inductively phase-shifted to lag the phase of an input RF signal to provide a second output signal. The two phase-shifted outputs are impedance matched to the dual input ports of a balanced radiating structure that acts as a point source when the input ports are driven in phase quadrature.
摘要翻译： 一种多相耦合器，包括提供两个相对于输入射频（RF）信号相位移位的两个输出信号的降噪电路。 输入RF信号被电容性相移以引导输入RF信号的相位以提供一个输出信号并被感应相移以滞后输入RF信号的相位以提供第二输出信号。 两个相移输出与平衡辐射结构的双输入端口阻抗匹配，当输入端口以相位正交驱动时，它们充当点源。
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公开(公告)号：US4229698A
公开(公告)日：1980-10-21
申请号：US24264
申请日：1979-03-26
IPC分类号： H03J3/14 , H04L27/144 , H04B1/16
CPC分类号： H03J3/14 , H04L27/144
摘要： An indicator for displaying RTTY signals in a terminal unit. The terminal unit converts mark and space signals from a radio receiver at audio frequencies to digital pulses for a readout device. Proper tuning of the radio receiver is facilitated by viewing the displayed signals. The readout device converts the digital pulses to alphanumeric characters.
摘要翻译： 用于在终端单元中显示RTTY信号的指示器。 终端单元将来自音频的无线电接收机的标记和空间信号转换为用于读出装置的数字脉冲。 通过查看显示的信号便于无线电接收机的正确调谐。 读出装置将数字脉冲转换为字母数字字符。
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公开(公告)号：US4243836A
公开(公告)日：1981-01-06
申请号：US067169
申请日：1979-08-16
摘要： A terminal unit having a digital autostart circuit for energizing an output device such as a teleprinter. The autostart circuit responds only to the space character which is transmitted between every word in the commonly used Murray and ASCII codes. A method for detecting the presence of information signals encoded in the Murray and ASCII codes wherein a predetermined bit of each incoming signal is inverted and the binary states of each bit of incoming character are sensed to determine the presence of the space character.
摘要翻译： 一种具有数字自动启动电路的终端单元，用于激励诸如电传机的输出设备。 自动启动电路只响应在常用的Murray和ASCII码之间的每个字之间传输的空格字符。 一种用于检测以Murray编码的信息信号的存在和ASCII码的方法，其中每个输入信号的预定位被反转，并且感测到每个输入字符的位的二进制状态以确定空间字符的存在。
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5.发明授权
公开(公告)号：US4013965A
公开(公告)日：1977-03-22
申请号：US655556
申请日：1976-02-05
摘要： A converter for converting radio teleprinter audio frequency signals from a radio receiver into teleprinter signals which are bipolar pulses for operating an output device. The converter includes a binary pulse decoder, which may be used independently in other applications, and a pair of substantially identical demodulator channels.In radio teleprinter applications the novel decoder is coupled to two substantially identical demodulator chanels which demodulate pulses from incoming information signals at audio frequencies. In the demodulator channels the frequencies of the information signals, which commonly are received by the demodulator channels on different audio frequencies, are shifted to the same audio frequency by mixing them with a signal from a respective local oscillator in each demodulator channel. The demodulator channels each detect a series of DC pulses from the audio signals and apply the DC pulses to the decoder.
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