公开(公告)号：US6043918A

公开(公告)日：2000-03-28

申请号：US989467

申请日：1997-12-12

申请人： Joseph McAlpin Bozzay ,  Richard C. Thuss ,  James Howard Leveque, III ,  Thomas A. Russell

发明人： Joseph McAlpin Bozzay ,  Richard C. Thuss ,  James Howard Leveque, III ,  Thomas A. Russell

IPC分类号： H04B7/185 ,  H04B10/105 ,  H04B10/00

CPC分类号： H04B10/118 ,  H04B7/18504 ,  H04B7/18515 ,  H04B7/18513

摘要： A laser satellite communication system which avoids atmospheric, wind and turbulence effects. A satellite or high altitude platform communication system includes an earth-orbiting satellite or high altitude platform carrying a laser communications receiver and an acknowledgement transmitter. A ground terminal having a laser communications transmitter which is caused to continuously transmit large data block signals. When one block of data signals is received at the satellite or platform, an acknowledgement signal is sent to earth from the satellite or platform. The ground terminal receives the acknowledgement signal and causes the ground terminal laser communication transmitter to continuously transmit the next succeeding large block data signals. This process is repeated until all of the data has been received by the earth-orbiting satellite or high altitude platform, whereby all of the large data block signals are received by the laser communication receiver through scintillation windows in the atmosphere.

摘要翻译： 一种避免大气，风和湍流效应的激光卫星通信系统。 卫星或高空平台通信系统包括地球轨道卫星或携带激光通信接收机和确认发射机的高空平台。 具有激光通信发射机的接地终端被连续发送大的数据块信号。 当在卫星或平台上接收到一个数据信号块时，确认信号从卫星或平台发送到地球。 接地端子接收确认信号，并使接地端子激光通信发射机连续发送下一个后续大块数据信号。 重复这个过程，直到地球轨道卫星或高空平台接收到所有数据，由此所有的大数据块信号都被激光通信接收机通过大气中的闪烁窗口接收。

公开(公告)号：US5065451A

公开(公告)日：1991-11-12

申请号：US363863

申请日：1989-06-09

申请人： Howard Leveque

发明人： Howard Leveque

IPC分类号： H04B14/00 ,  H04B1/64

CPC分类号： H04B1/64

摘要： A linked compressor-expander (Lincompex) circuit for use in telecommunications utilizes a frequency compensation circuit to frequency shift the total bandwidth of the whole communication channel to eliminate single side band "duck-talk" and data distortion in the transmitting of a complex waveform due to frequency drift or the detuning of the transmitter/receiver system. The demodulator includes an expander for expanding the compressed voice or data signal and a control tone conversion circuit for converting the received control tone into a frequency signal to be used by the expander. The control tone conversion circuit also determines the frequency error of a combination information waveform so that the frequency compensation circuit can carry out the proper frequency shifting process. A fading regulator is also provided to remove any audible level variations not removed by the automatic gain control circuitry in the receiver.

公开(公告)号：US5907584A

公开(公告)日：1999-05-25

申请号：US557575

申请日：1995-11-14

申请人： J. Howard Leveque

发明人： J. Howard Leveque

IPC分类号： H04B1/64 ,  H04K27/30

CPC分类号： H04B1/64

摘要： The system and method of the present invention include a modulator which encodes data on a communication signal using angle modulation. The demodulator, receiving the angle modulated communication signal, angle demodulates the angle modulated communication signal to obtain the data. In this manner, separate frequency bands are not required to transmit both the communication signal and the data. The bandwidth of the transmission from the modulator is reduced to the frequency band of the angle modulated communication signal. Additionally, since angle modulations of an audio signal are inaudible to a listener, when the communication signal is an audio signal, the angle modulated audio signal may be directly output to a listener at the demodulator. A multitude of applications exist for the present invention including Lincompex communication. In Lincompex communication, a Lincompex compressor compresses the communication signal based on the envelope thereof, and outputs a control tone representative of the envelope. The system and method of the present invention treats the control tone as the data, and encodes the control tone on the compressed communication signal through angle modulation. The demodulator angle demodulates the angle modulated compressed communication signal to obtain the control tone, and expands the angle modulated compressed communication signal based on the control tone.

摘要翻译： 本发明的系统和方法包括使用角度调制对通信信号进行数据编码的调制器。 解调器，接收角度调制通信信号，角度解调角度调制通信信号以获取数据。 以这种方式，不需要单独的频带来传送通信信号和数据。 来自调制器的传输的带宽减小到角度调制通信信号的频带。 此外，由于音频信号的角度调制对于收听者是听不到的，所以当通信信号是音频信号时，角度调制音频信号可以直接输出到解调器上的收听者。 本发明存在许多应用，包括Lincompex通信。 在Lincompex通信中，Lincompex压缩器根据其包络压缩通信信号，并输出代表信封的控制音。 本发明的系统和方法将控制音作为数据，并通过角度调制对压缩通信信号上的控制音进行编码。 解调角度解调角度调制压缩通信信号以获得控制音，并且基于控制音扩展角度调制的压缩通信信号。

公开(公告)号：US4271499A

公开(公告)日：1981-06-02

申请号：US923959

申请日：1978-07-12

申请人： J. Howard Leveque

发明人： J. Howard Leveque

IPC分类号： H04B1/64 ,  H04M11/06 ,  H04J3/18

CPC分类号： H04B1/64 ,  H04M11/064

摘要： A linked compressor-expander (LINCOMPEX) circuit for use in telecommunications is implemented digitally. A speech compressor circuit in a modulator and a speech expander circuit in a demodulator controllably attenuate given syllables of a speech signal by values determined in response to binary input signals which collectively represent the amplitude of a given symbol of the speech signal. A control tone signal is generated by the modulator, and the demodulator is responsive to the control tone signal for operating the voltage attenuator circuit of the digital expander to thereby reconstruct the speech signal. Calibrate circuitry is provided for periodically detecting a test frequency of the control tone generator during a brief period prior to transmission of syllables of the speech signal. Also included is a data multiplexing circuit for transmitting and receiving data between speech syllables to optimize transmitter loading.

摘要翻译： 用于电信的链接式压缩扩展器（LINCOMPEX）电路是以数字方式实现的。 调制器中的语音压缩器电路和解调器中的语音扩展器电路可控制地将语音信号的给定音节衰减为响应于共同表示语音信号的给定符号的幅度的二进制输入信号而确定的值。 由调制器产生控制音信号，并且解调器响应于控制音信号以操作数字扩展器的电压衰减器电路，从而重构语音信号。 提供校准电路，用于在发送语音信号的音节之前的短暂时间周期性地检测控制乐音发生器的测试频率。 还包括用于在语音音节之间发送和接收数据以优化发射机负载的数据复用电路。

公开(公告)号：US5495468A

公开(公告)日：1996-02-27

申请号：US258060

申请日：1994-06-10

申请人： J. Howard Leveque

发明人： J. Howard Leveque

IPC分类号： H04B1/64 ,  H04J3/18

CPC分类号： H04B1/64

摘要： At least two information waveforms are transmitted over the same communications channel using Lincompex techniques. Each of the information waveforms are modulated using Lincompex techniques to generate compressed information waveforms and associated control tones. The compressed information waveforms have the same frequency band. The compressed information waveforms and associated control tones are arithmetically combined, and transmitted over a transmission medium. These signals are then received from the transmission medium. A plurality of Lincompex expanders demodulate the received signals using Lincompex techniques and one of the associated control tones.

摘要翻译： 使用Lincompex技术在相同的通信信道上传送至少两个信息波形。 使用Lincompex技术对每个信息波形进行调制，以产生压缩信息波形和相关的控制音调。 压缩信息波形具有相同的频带。 压缩信息波形和相关联的控制音调被算术组合，并通过传输介质传输。 然后从传输介质接收这些信号。 多个Lincompex扩展器使用Lincompex技术和相关联的控制音调之一解调接收到的信号。

公开(公告)号：US5454010A

公开(公告)日：1995-09-26

申请号：US234849

申请日：1994-04-28

申请人： J. Howard Leveque

发明人： J. Howard Leveque

IPC分类号： H04B1/64 ,  H04B1/713

CPC分类号： H04B1/64 ,  H04B1/713

摘要： A system and method for calibrating telecommunications systems employs frequency hopping techniques, and more particularly, employs linked compressor-expander (Lincompex) techniques in the transmission of any combination information waveform such as that generated by voice or digital data. A calibration tone sent at each channel frequency is compared against a reference frequency. Based on the results of the comparison, the information waveform is frequency compensated. Alternately, a calibration tone sent at an initial channel frequency is compared to a reference frequency to determine at total frequency error. The system then predicts the total frequency errors for successive channel frequencies. The system frequency compensates the information waveform based on the determined and predicted total frequency errors.

摘要翻译： 用于校准电信系统的系统和方法采用跳频技术，更具体地，在传输任何组合信息波形（例如由语音或数字数据产生的组合信息波形）中使用链接的压缩扩展器（Lincompex）技术。 将每个通道频率发送的校准音与参考频率进行比较。 基于比较的结果，信息波形被频率补偿。 或者，将以初始信道频率发送的校准音调与参考频率进行比较，以确定总频率误差。 然后，系统预测连续信道频率的总频率误差。 系统频率根据确定和预测的总频率误差补偿信息波形。

公开(公告)号：US5058202A

公开(公告)日：1991-10-15

申请号：US398707

申请日：1989-08-25

申请人： Howard Leveque

发明人： Howard Leveque

IPC分类号： H04B1/64

CPC分类号： H04B1/64

摘要： A system for transmitting and receiving frequency modulated signals utilizes linked compressor/expander (Lincompex) techniques. The signal to be transmitted is first processed by a Lincompex modulator which infinitely compresses the signal and produces a control tone representative of this compression process. After being processed by the Lincompex modulator, the compressed signal is frequency modulated and transmitted. A receiver having a Lincompex demodulator is used to receive the modulated signal. The received signal is initially demodulated by a discriminator prior to being expanded by the Lincompex demodulator according to the received control tone.

摘要翻译： 用于发送和接收频率调制信号的系统利用连接的压缩器/扩展器（Lincompex）技术。 要发送的信号首先由Lincompex调制器进行处理，Lincompex调制器无限地压缩信号并产生代表该压缩过程的控制音。 经Lincompex调制器处理后，对压缩信号进行频率调制和传输。 具有Lincompex解调器的接收机用于接收调制信号。 接收到的信号在由Lincompex解调器根据接收到的控制音调进行扩展之前由鉴别器最初进行解调。

公开(公告)号：US5095539A

公开(公告)日：1992-03-10

申请号：US569980

申请日：1990-08-20

申请人： Howard Leveque

发明人： Howard Leveque

IPC分类号： H03G9/18

CPC分类号： H03G9/005 ,  H03G9/18

摘要： A linked compressor-expander (Lincompex) system and method varies the power of the control tone signal to maintain the power of the signal supplied to the transmitter substantially constant. The system measures a parameter related to the power level of the compressed information signal output from the compressor and varies the power of the control tone such that the sum of compressed information signal power and control tone power is substantially constant. When the input information signal drops below the compression range of the compressor, the control tone amplitude is thereby boosted to maintain the combined information signal and control tone signal power more nearly constant, and thus improve performance during low input information signal power levels. During these low input information signal power levels, the power of the control tone S/N is boosted so as to maintain higher control tone at the receive, thereby improving demodulator performance.

摘要翻译： 连接的压缩机 - 膨胀器（Lincompex）系统和方法改变控制音信号的功率，以保持提供给变送器的信号的功率基本上恒定。 该系统测量与从压缩机输出的压缩信息信号的功率电平相关的参数，并且改变控制音的功率，使得压缩信息信号功率和控制音功率之和基本恒定。 当输入信息信号降低到压缩器的压缩范围以下时，由此提高控制音幅度，以使组合的信息信号和控制音信号功率更加接近恒定，从而提高低输入信息信号功率级的性能。 在这些低输入信息信号功率电平期间，提升控制音S / N的功率，以便在接收时保持更高的控制音，从而提高解调器的性能。

公开(公告)号：US4107612A

公开(公告)日：1978-08-15

申请号：US683383

申请日：1976-05-05

申请人： J. Howard Leveque

发明人： J. Howard Leveque

IPC分类号： H03B5/12 ,  H03J5/02 ,  H03L7/18 ,  H04B1/04 ,  H03B3/06

CPC分类号： H03J5/0272 ,  H03B5/1221 ,  H03B5/1228 ,  H03B5/1231 ,  H03B5/1243 ,  H03B5/1256 ,  H03L7/18 ,  H04B2001/0491

摘要： A phase locked loop signal generator is especially adapted for synthesizing a selectable frequency signal for exciting an HF radio frequency transmitter to transmit over the seven marine telegraph bands. The signal generator includes an oscillator for providing a highly stable frequency standard. Another signal generator is responsive to the frequency standard and to frequency selector signals input by the operator for generating an exciter signal which is coupled to the transmitter for effecting the RF transmission within a predetermined frequency range. The exciter signal generator includes: a reference dividing circuit programmable in response to the frequency selector signals for providing a reference frequency signal having a frequency which is a fractional part of that of the frequency standard; a phase locked loop circuit having a frequency divider in the feedback loop which is responsive to the reference frequency signal for producing an intermediate signal having a frequency which is a multiple of that of the reference frequency signal; and an output divider circuit is coupled to the phase locked loop circuit and is responsive to the frequency selector signal for generating the exciter signal to be at a frequency which is a fractional value of that of the intermediate signal. By varying the frequency selector signal, over 5000 transmitting frequencies are available using a conventional harmonic-related transmitter.

摘要翻译： 锁相环信号发生器特别适用于合成用于激发HF射频发射器的可选频率信号，以在七个海洋电报频带上传输。 信号发生器包括用于提供高度稳定的频率标准的振荡器。 另一信号发生器响应于频率标准和操作者输入的频率选择器信号，用于产生耦合到发射器的激励器信号，以在预定频率范围内进行RF传输。 励磁信号发生器包括：参考分频电路，可响应于频率选择器信号而编程，用于提供频率为频率标准频率的一部分频率的参考频率信号; 一个锁相环电路，在反馈回路中具有分频器，该分频器响应于参考频率信号，用于产生频率为基准频率信号倍数的中间信号; 并且输出分频器电路耦合到锁相环电路，并且响应于频率选择器信号以产生激励器信号为处于与中间信号的分数值的分数值的频率。 通过改变频率选择器信号，使用传统的谐波相关发射机可以获得超过5000个发射频率。