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81. 发明授权

US5757787A Dual mode satellite/cellular terminal 失效
公开(公告)号：US5757787A
公开(公告)日：1998-05-26
申请号：US816047
申请日：1997-03-11
申请人： Paul W. Dent
发明人： Paul W. Dent
IPC分类号： H04L5/16 , H04B1/40 , H04B7/005 , H04B7/185 , H04B7/212 , H04J3/00 , H04L1/00 , H04L1/08 , H04W52/06 , H04W52/08 , H04W52/10 , H04W52/24 , H04W52/28 , H04W52/30 , H04W88/06 , H04Q7/36
CPC分类号： H04W52/283 , H04B7/18532 , H04B7/18563 , H04L1/0001 , H04L1/0059 , H04L1/0071 , H04L1/08 , H04W52/06 , H04W52/24 , H04W52/287 , H04W52/288 , H04W52/30 , H04W88/06 , H04B1/408 , H04W52/08 , H04W52/10
摘要： A method and apparatus of communicating information using Time Division Multiple Access and adaptive transmission and reception are disclosed. Signal bursts are transmitted from TDMA transmitters to a TDMA receiver wherein the transmitter codes the information and transmits coded information to the receiver using at least one of two timeslots of a plurality of timeslots in a repetitive TDMA frame period. Both of the two timeslots are received whether or not the transmitter has transmitted using one or two timeslots and the received signals are classified as intended and non-intended. Successively received signals classified as intended are then assembled into a block for decoding to reproduce the information.

82. 发明授权

US5745523A Multi-mode signal processing 失效
标题翻译：多模信号处理
公开(公告)号：US5745523A
公开(公告)日：1998-04-28
申请号：US967027
申请日：1992-10-27
申请人： Paul W. Dent , Bjorn Olof Peter Ekelund
发明人： Paul W. Dent , Bjorn Olof Peter Ekelund
IPC分类号： H04L27/18 , H03C1/54 , H03H1/02 , H03M3/02 , H04B1/26 , H04B1/40 , H04B7/26 , H04L25/03 , H04L27/00 , H04L27/20 , H04Q7/38 , H04L27/34 , H04L27/36 , H04L27/38
CPC分类号： H04B1/0014 , H03C1/542 , H03H1/02 , H03M3/024 , H04B1/0003 , H04B1/0021 , H04B1/0039 , H04B1/26 , H04B1/40 , H04L25/03834 , H04L27/2017 , H04L27/2064
摘要： A digital system accommodates analog communications, thus avoiding the need for separate subsystems each dedicated to either analog or digital communications. The system includes a receive circuit for converting received signals into an intermediate frequency, a transmit circuit for modulating and transmitting signals and signal processors for processing the intermediate frequency signals and the signals to be transmitted, wherein the signals can be processed into digital or analog format using substantially the same circuitry.
摘要翻译：数字系统适应模拟通信，从而避免需要分别专用于模拟或数字通信的子系统。该系统包括用于将接收到的信号转换为中频的接收电路，用于调制和发送信号的发射电路以及用于处理中频信号和待传输信号的信号处理器，其中信号可被处理为数字或模拟格式使用基本相同的电路。

83. 发明授权

US5742678A Multiple access coding for radio communications 失效
公开(公告)号：US5742678A
公开(公告)日：1998-04-21
申请号：US647187
申请日：1996-05-09
申请人： Paul W. Dent , Gregory E. Bottomley
发明人： Paul W. Dent , Gregory E. Bottomley
IPC分类号： H04Q7/38 , H01J13/00 , H04B1/707 , H04J11/00 , H04J13/00 , H04J13/12 , H04J13/16 , H04L1/00 , H04L1/02 , H04L9/00 , H04L9/18
CPC分类号： H04L1/0057 , H04B1/707 , H04J13/00 , H04J13/0048 , H04J13/12 , H04J13/004 , H04J13/16 , H04L2209/04 , H04L2209/34
摘要： Individual information signals encoded with a common block error-correction code are assigned a unique scrambling mask, or signature sequence, taken from a set of scrambling masks having selected correlation properties. The set of scrambling masks is selected such that the correlation between the modulo-2 sum of two masks with any codeword in the block code is a constant magnitude, independent of the mask set and the individual masks being compared. In one embodiment, when any two masks are summed using modulo-2 arithmetic, the Walsh transformation of that sum results in a maximally flat Walsh spectrum. For cellular radio telephone systems using subtractive CDMA demodulation techniques, a two-tier ciphering system ensures security at the cellular system level by using a pseudorandomly generated code key to select one of the scrambling masks common to all of the mobile stations in a particular cell. Also, privacy at the individual mobile subscriber level is ensured by using a pseudorandomly generated ciphering key to encipher individual information signals before the scrambling operation.

84. 发明授权

US5727023A Apparatus for and method of speech digitizing 失效
标题翻译：语音数字化装置和方法
公开(公告)号：US5727023A
公开(公告)日：1998-03-10
申请号：US120426
申请日：1993-09-14
申请人： Paul W. Dent
发明人： Paul W. Dent
IPC分类号： H04L27/18 , G10L19/00 , H03C1/54 , H03H1/02 , H03M1/00 , H03M1/38 , H03M3/02 , H03M3/04 , H04B1/26 , H04B1/40 , H04B7/26 , H04B14/06 , H04L25/03 , H04L27/00 , H04L27/20 , H04Q7/38
CPC分类号： H03M3/024 , H03C1/542 , H03H1/02 , H04B1/0003 , H04B1/0014 , H04B1/0021 , H04B1/0039 , H04B1/26 , H04B1/40 , H04L25/03834 , H04L27/2017 , H04L27/2064
摘要： A speech encoder converts analog speech signals into a stream of binary coded speech samples. A circuit for performing analog to digital conversion compares an input speech signal with a signal from a digital integrator. Based on the comparison a series of decisions are registered which indicate a step sign of the input signal. A syllabic filter generates a step magnitude according to the registered decisions. The step sign and step magnitude are combined providing a sign/magnitude representation of the input signal. When the sign/magnitude representation is integrated digitally in a decimation filter a digital representation of the analog signal is formed. A speech decoder, the antithesis of the encoder, converts binary coded speech samples into an analog waveform in a manner opposite to the A/D conversion method.
摘要翻译：语音编码器将模拟语音信号转换为二进制编码语音样本流。用于执行模数转换的电路将输入语音信号与来自数字积分器的信号进行比较。基于该比较，登记了指示输入信号的步进符号的一系列决定。音节滤波器根据注册的决定产生一个步长。组合步进符号和阶跃幅度提供输入信号的符号/幅度表示。当符号/幅度表示被数字地集成在抽取滤波器中时，形成模拟信号的数字表示。语音解码器与编码器的对比，以与A / D转换方法相反的方式将二进制编码的语音样本转换为模拟波形。

85. 发明授权

US5670964A Navigation assistance for call handling in mobile telephone systems 失效
标题翻译：移动电话系统中呼叫处理的导航辅助
公开(公告)号：US5670964A
公开(公告)日：1997-09-23
申请号：US384334
申请日：1995-02-01
申请人： Paul W. Dent
发明人： Paul W. Dent
IPC分类号： H04J13/04 , H04B7/005 , H04W52/22 , H04W52/28 , H04W64/00 , G01S3/02
CPC分类号： H04W52/283 , H04W52/282 , H04W64/00 , H04W52/223 , H04W52/226
摘要： In a mobile radio telephone system employing TDMA or CDMA, mobile units often must determine the timing and appropriate power necessary for transmissions to a base station. Information broadcast by base stations allows the mobile station to approximate its distance from each base station based on an average signal strength received and thereby determine the coarse sector location. Broadcast information may include the mean radial distribution of signal strength versus distance. From the broadcast information, the mobile station determines the propagation loss for a transmission to the base station and the appropriate power level and timing for transmissions. Accordingly, the mobile station transmits signals to the base station at the determined signal timing and power level.
摘要翻译：在采用TDMA或CDMA的移动无线电话系统中，移动单元通常必须确定向基站传输所需的定时和适当的功率。由基站广播的信息允许移动台基于接收到的平均信号强度来近似来自每个基站的距离，从而确定粗略的扇区位置。广播信息可以包括信号强度对距离的平均径向分布。从广播信息中，移动台确定到基站的传输的传播损耗以及用于传输的适当功率电平和定时。因此，移动台以确定的信号定时和功率电平向基站发送信号。

86. 发明授权

US5654677A Relaxation oscillator of reduced complexity using CMOS equivalent of a four-layer diode 失效
标题翻译：使用CMOS等效的四层二极管降低复杂度的松弛振荡器
公开(公告)号：US5654677A
公开(公告)日：1997-08-05
申请号：US668815
申请日：1996-06-24
申请人： Paul W. Dent
发明人： Paul W. Dent
IPC分类号： H03K3/354 , H03K4/502 , H03K4/787 , H03K4/83 , H03B5/24 , H03C3/00
CPC分类号： H03K3/354 , H03K4/502 , H03K4/787
摘要： A relaxation oscillator of reduced complexity is described which can be constructed as part of a silicon integrated circuit. The current controlled oscillator includes complementary field effect transistors operating in enhancement mode. The drain of one FET is connected to the gate of the other FET and vice versa. The resulting CMOS circuit functions as a four-layer diode. A resistor is connected between the drains of both transistors. A storage capacitor is connected between the sources of both transistors. A current source is connected to charge the storage capacitor such that the frequency of an oscillator output signal is determined by the current generated by the current source.
摘要翻译：描述了可以构造为硅集成电路的一部分的复杂度降低的张弛振荡器。电流控制振荡器包括以增强模式工作的互补场效应晶体管。一个FET的漏极连接到另一个FET的栅极，反之亦然。所产生的CMOS电路用作四层二极管。电阻连接在两个晶体管的漏极之间。存储电容器连接在两个晶体管的源极之间。连接电流源以对存储电容器充电，使得振荡器输出信号的频率由电流源产生的电流确定。

87. 发明授权

US5642358A Multiple beamwidth phased array 失效
标题翻译：多波束宽带相控阵
公开(公告)号：US5642358A
公开(公告)日：1997-06-24
申请号：US225399
申请日：1994-04-08
申请人： Paul W. Dent
发明人： Paul W. Dent
IPC分类号： H01Q21/06 , H01Q1/28 , H01Q25/00 , H04B7/15 , H04B7/204 , H04B7/185
CPC分类号： H01Q1/288 , H01Q25/00 , H04B7/2041
摘要： A system for wireless communication between at least one first station and a plurality of second stations using a relay station is disclosed. The relay station contains, among other features, an antenna array and a multi-channel transponder. The antenna array has a plurality of antenna elements which are divided into two sets. The first set is used to provide transmission or reception using beams having a first beamwidth and the second set is used to provide transmission or reception using beams having a second beamwidth. The multi-channel transponder, which is connected to the antenna array and a feeder link antenna, receives feeder link signals from at least one of the first stations and converts the signals into drive signals for the antenna array elements. The multi-channel transponder has a first channel bandwidth for channels transponding signals for transmissions having the first beamwidth and a second channel bandwidth for channels transponding signals for transmissions having said second beamwidth. The plurality of second stations is divided dynamically by a switching system into at least a first group that use the narrowest beamwidth and a second group that use the widest beamwidth, according to the path loss requirements for each group.
摘要翻译：公开了一种使用中继站的至少一个第一站和多个第二站之间的无线通信系统。除了其它特征之外，中继站还包含天线阵列和多信道应答器。天线阵列具有被分成两组的多个天线元件。第一组用于使用具有第一波束宽度的波束来提供发射或接收，并且第二组用于使用具有第二波束宽度的波束来提供发射或接收。连接到天线阵列和馈线链路天线的多声道转发器接收来自第一站中的至少一个的馈线链路信号，并将该信号转换成天线阵列元件的驱动信号。多信道转发器具有用于具有第一波束宽度的传输的信道的第一信道带宽和用于具有所述第二波束宽度的传输的信道的第二信道带宽。根据每个组的路径损耗要求，多个第二站由交换系统动态划分为至少使用最窄波束宽度的第一组和使用最宽波束宽度的第二组。

88. 发明授权

US5638024A Waste energy control and management in power amplifiers 失效
公开(公告)号：US5638024A
公开(公告)日：1997-06-10
申请号：US472662
申请日：1995-06-07
申请人： Paul W. Dent , Ross W. Lampe
发明人： Paul W. Dent , Ross W. Lampe
IPC分类号： H03F3/68 , H03F1/02 , H03F1/32 , H03F3/60 , H04B1/04 , H04B1/16 , H04B1/52 , H04B7/185
CPC分类号： H04B1/1607 , H03F1/0294 , H03F1/3229 , H03F1/3252 , H03F3/602 , H04B1/0483 , H04B1/52 , H04B1/04 , H04B2001/0433
摘要： An amplifying apparatus for linearly amplifying a desired signal using a pair of coupled non-linear amplifiers is disclosed. The amplifying apparatus comprises a limiter for separating amplitude variations from the desired signal and producing a constant amplitude signal bearing the phase of the desired signal and an amplitude related signal. In addition, a drive signal generater produces two drive signals each dependent on the constant amplitude signal and the amplitude related signal such that each drive signal depends on the phase of the desired signal and such that the sum of the squares of the amplitudes of the drive signals is constant. Finally, a coupler couples the two drive signals to produce two constant amplitude signals for driving the pair of non-linear power amplifiers and for coupling the outputs of the power amplifiers to produce two amplified output signals, one of which is the linearly amplified desired signal and the other of which is a waste energy signal.

89. 发明授权

US5619503A Cellular/satellite communications system with improved frequency re-use 失效
标题翻译：蜂窝/卫星通信系统改进频率重用
公开(公告)号：US5619503A
公开(公告)日：1997-04-08
申请号：US179953
申请日：1994-01-11
申请人： Paul W. Dent
发明人： Paul W. Dent
IPC分类号： H04J1/00 , H01Q1/24 , H01Q1/28 , H01Q21/08 , H01Q21/28 , H01Q25/00 , H04B7/08 , H04B7/10 , H04B7/185 , H04B7/204 , H04B7/212 , H04J3/00 , H04L1/00 , H04L1/06 , H04L25/03 , H04W16/02 , H04W16/14 , H04W74/08 , H04W84/02 , H04W84/04 , H04W84/06 , H04J3/16 , H04B1/10 , H04B15/00
CPC分类号： H04W16/02 , H01Q1/246 , H01Q1/288 , H01Q21/08 , H01Q21/28 , H01Q25/00 , H01Q25/007 , H04B7/0851 , H04B7/10 , H04B7/18513 , H04B7/18515 , H04B7/18532 , H04B7/18567 , H04B7/2041 , H04L25/0204 , H04L25/021 , H04L25/03331 , H04W84/025 , H04B7/0837 , H04B7/2046 , H04L1/007 , H04L25/03203 , H04L25/0328 , H04L25/03299 , H04W16/14 , H04W74/08 , H04W84/042 , H04W84/06
摘要： The invention relates to a radio communication system and method for minimizing co-channel interference. The system and method employ a matrix processor to separate signals received from, or transmitted to, a plurality of mobile units. The coefficients of the matrix are chosen to minimize interference between channels, and are adjusted periodically to account for changes in the mobile units using the system. The system and methods are applicable to, for example, landmobile communication, satellite communications system and hybrids thereof. In one embodiment, the system rotates the allocation of Digital Voice Color Codes and sector radiation patterns in opposite directions to maintain the same color code in the same absolute direction.
摘要翻译：本发明涉及一种用于最小化同频道干扰的无线电通信系统和方法。该系统和方法采用矩阵处理器来分离从多个移动单元接收或发送的信号。选择矩阵的系数以最小化信道之间的干扰，并且周期性地调整以考虑使用该系统的移动单元的变化。该系统和方法适用于例如陆上通信，卫星通信系统及其混合动力。在一个实施例中，系统以相反的方向旋转数字语音颜色代码和扇区辐射图案的分配，以保持相同的颜色代码在相同的绝对方向。

90. 发明授权

US5610559A Dual loop frequency synthesizer having fractional dividers 失效
$Dual loop frequency synthesizer having fractional dividers$
标题翻译：具有分数分频器的双回路频率合成器
公开(公告)号：US5610559A
公开(公告)日：1997-03-11
申请号：US614722
申请日：1996-03-13
申请人： Paul W. Dent
发明人： Paul W. Dent
IPC分类号： H03L7/197 , H03L7/23 , H04B1/40 , H04B7/155 , H04B7/185
CPC分类号： H04B7/18563 , H03L7/1974 , H03L7/23 , H04B1/406
摘要： A radio telephone which is capable of switching between operating through a land based cellular network and an orbiting satellite system is disclosed. First antenna and radio frequency circuits receive transmitted signals from the land-based network and form first conditioned Signals for subsequent numerical decoding. Second antenna and radio frequency circuits receive transmitted signals from the orbiting satellite system and form second conditioned signals for subsequent numerical decoding. Numerical decoders process either the first conditioned signals or the second conditioned signals to provide an automatic frequency control signal. Reference frequency oscillators controlled by the automatic frequency control signal provide a reference frequency signal. Radio frequency synthesizers using the reference frequency signal and having a first output at a first programmable frequency connected to the first radio frequency circuits determine reception of a channel frequency of the land-based network and a second output at a second programmable frequency connected to the second radio frequency circuits determine reception of a channel frequency of the orbiting satellite system.
摘要翻译：公开了能够通过基于陆地的蜂窝网络和轨道卫星系统进行切换的无线电话。第一天线和射频电路接收来自陆基网络的发射信号，并形成用于后续数字解码的第一条件信号。第二天线和射频电路接收来自轨道卫星系统的传输信号，并形成第二条件信号用于随后的数字解码。数字解码器处理第一调节信号或第二调节信号以提供自动频率控制信号。由自动频率控制信号控制的参考频率振荡器提供参考频率信号。使用参考频率信号并且具有连接到第一射频电路的第一可编程频率的第一输出的射频合成器确定陆基网络的信道频率的接收和连接到第二射频电路的第二可编程频率的第二输出射频电路确定轨道卫星系统的信道频率的接收。

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