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81.发明授权Method and apparatus for reducing self interference in a communication system 失效用于减少通信系统中的自身干扰的方法和装置
公开(公告)号：US5734967A
公开(公告)日：1998-03-31
申请号：US575450
申请日：1995-12-20
CPC分类号： H04W16/14 , G10L19/00 , H04L1/0014 , H04L2001/0093 , H04W28/22 , H04W36/18
摘要： A code division multiple access (CDMA) communication system reduces interference by reducing the encoding rate for selected mobiles. The system primarily uses link related characteristics such as, inter alia, distance measurements, physical resource power and mobile determined noise, to determine which mobiles require a encoding rate reduction. Once determined, the encoding rate of the determined mobiles is reduced, which in turn reduces self-interference and enhances system capacity.
摘要翻译： 码分多址（CDMA）通信系统通过降低所选移动台的编码率来减少干扰。 该系统主要使用诸如距离测量，物理资源功率和移动确定噪声之类的链路相关特性来确定哪个移动台需要编码速率降低。 一旦确定，所确定的移动台的编码速率就会降低，从而降低自干扰并提高系统容量。
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82.发明授权Method and apparatus for receiving electromagnetic radiation within a frequency band 失效用于在频带内接收电磁辐射的方法和装置
公开(公告)号：US5412690A
公开(公告)日：1995-05-02
申请号：US27997
申请日：1993-03-08
申请人： Michael D. Kotzin , Joseph Schuler
发明人： Michael D. Kotzin , Joseph Schuler
CPC分类号： H03G3/3052 , H04L27/00
摘要： A method and apparatus are provided for receiving electromagnetic radiation within a frequency band. The receiving is accomplished by intercepting electromagnetic radiation within the frequency band and converting the intercepted electromagnetic radiation into an electrical signal. Subsequently, a portion of the electrical signal is digitized into digitized signals. Each digitized signal represents the intercepted electromagnetic radiation within a portion of the frequency band. Finally, a composite digitized signal is generated from at least two of the digitized signals. Alternatively, the receiving process may be enhanced by intercepting first electromagnetic radiation within a portion of the frequency band and by intercepting second electromagnetic radiation within another portion of the frequency band. Subsequently, the first and the second electromagnetic radiation is combined into a composite electromagnetic radiation waveform. The composite electromagnetic radiation waveform is converted into an electrical signal which may be processed into digitized signals which form a composite digitized signal.
摘要翻译： 提供了用于在频带内接收电磁辐射的方法和装置。 接收通过截取频带内的电磁辐射并将截取的电磁辐射转换成电信号来实现。 随后，电信号的一部分被数字化为数字化信号。 每个数字化信号表示频带的一部分内截获的电磁辐射。 最后，从至少两个数字化信号产生复合数字化信号。 或者，可以通过拦截频带的一部分内的第一电磁辐射并且通过拦截频带的另一部分内的第二电磁辐射来增强接收过程。 随后，将第一和第二电磁辐射组合成复合电磁辐射波形。 复合电磁辐射波形被转换成电信号，其可被处理成形成复合数字化信号的数字化信号。
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公开(公告)号：US5231629A
公开(公告)日：1993-07-27
申请号：US591302
申请日：1990-10-01
IPC分类号： H04L5/14
CPC分类号： H04L5/1469
摘要： In a TDM communication system (100), full duplex communication is provided for two communication units(104) and (105) which communicated communication messages through a repeater (102). Communication messages transmitted from the communication units (104) and (105) are combined in the repeater (102) to produce a combined communication message. The repeater (102) transmits the combined communication message to the communication units (104) and (105). The communication units (104) and (105) remove from the combined communication message the communication the previously transmitted communication message so as to recover the communication message from the other communication unit.
摘要翻译： 在TDM通信系统（100）中，为通过中继器（102）传送通信消息的两个通信单元（104）和（105）提供全双工通信。 从通信单元（104）和（105）发送的通信消息在中继器（102）中组合以产生组合的通信消息。 中继器（102）将组合的通信消息发送到通信单元（104）和（105）。 通信单元（104）和（105）从组合的通信消息中删除先前发送的通信消息的通信，以便从另一个通信单元恢复通信消息。
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公开(公告)号：US5127054A
公开(公告)日：1992-06-30
申请号：US600271
申请日：1990-10-22
CPC分类号： G10L21/038 , H04B1/667
摘要： A harmonic signal is created from a limited spectral representation of a voice signal. The harmonic signal is combined with the at least a portion of the limited delayed spectral signal to provide a reconstructed speech signal having perceptually improved audio quality.
摘要翻译： 谐波信号是从语音信号的有限频谱表示形成的。 谐波信号与限制的延迟频谱信号的至少一部分组合以提供具有感知改善的音频质量的重构语音信号。
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公开(公告)号：US5081641A
公开(公告)日：1992-01-14
申请号：US475633
申请日：1990-02-06
CPC分类号： H04W88/08
摘要： Method and apparatus for facilitating communication of information in a system without the use of a baseband hopping unit, by sharing a common TDM bus between a plurality of radio communication units, processing units, and information links, where the processing units extract traffic channel information, packetize and/or unpacketize the information, and return same back to the common bus for retrieval by the information links or radio communication units.
摘要翻译： 通过在多个无线电通信单元，处理单元和信息链路之间共享公共TDM总线，用于在不使用基带跳频单元的情况下促进系统中的信息通信的方法和装置，其中处理单元提取业务信道信息， 打包和/或取消封包信息，并将其返回到公共总线以供信息链路或无线电通信单元检索。
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公开(公告)号：US4882751A
公开(公告)日：1989-11-21
申请号：US926311
申请日：1986-10-31
IPC分类号： H04K1/00
CPC分类号： H04K1/00
摘要： A trunked communications system that accommodates encrypted secure communications. The system uses both non-encrypted message detectors and encrypted message detectors to assure that the trunked central control unit receives the signals it must receive in order to properly allocate and maintain channel assignments.
摘要翻译： 一种集群通信系统，适用于加密的安全通信。 系统使用非加密消息检测器和加密消息检测器来确保中继中央控制单元接收它必须接收的信号，以便正确地分配和维护信道分配。
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公开(公告)号：US4860312A
公开(公告)日：1989-08-22
申请号：US184305
申请日：1988-04-12
IPC分类号： H04B14/06
CPC分类号： H04B14/064
摘要： In a digital communication system, a residual signal is generated, encoded, and combined with an encoded information signal in a manner that does not appreciably degrade the encoded information signal. The information contained within the residual signal may be used by the receivers to improve the quality of the recovered signal. The residual signal is modulated such that it may only be recovered when the signal-to-noise ratio is sufficiently high. In this way, the quality of the recovered signal improves with increased signal-to-noise ratio.
摘要翻译： 在数字通信系统中，以不会使编码信息信号明显劣化的方式产生，编码和与编码信息信号组合的残差信号。 残留信号中包含的信息可被接收机用来提高恢复信号的质量。 对残留信号进行调制，使得只有当信噪比足够高时才能恢复。 以这种方式，恢复的信号的质量随着信噪比的增加而提高。
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公开(公告)号：US4839923A
公开(公告)日：1989-06-13
申请号：US941254
申请日：1986-12-12
申请人： Michael D. Kotzin
发明人： Michael D. Kotzin
CPC分类号： G10L21/04 , H04B1/662 , H04B14/064
摘要： A method and apparatus to compand an analog message to afford a two-to-one improvement in spectral efficiency, while contemporaneously minimizing distortion in the received signal. According to the invention, an analog message such as a voice message is digitized in a continuously variable slope delta modulator (CVSD) and stored at a first rate. The digitized message is removed from the storage means, interleaved with a predetermined signal, and converted back into an analog message in a continuously variable slope delta demodulator at a second rate being at least twice as fast as the first rate. The analog signal is then transmitted during at least one time slot of a communication channel. The predetermined pattern operates to minimize the distortion ordinarily created by digitizing the analog signal.
摘要翻译： 一种压缩模拟消息的方法和装置，以在频谱效率方面提供两对一的改进，同时最小化接收信号中的失真。 根据本发明，诸如语音消息的模拟消息在连续可变的斜率增量调制器（CVSD）中被数字化并以第一速率存储。 数字化消息从存储装置中移除，与预定信号交错，并以不同于第一速率的速度的第二速率被转换成连续可变斜率增量解调器中的模拟消息。 然后在通信信道的至少一个时隙期间传输模拟信号。 预定模式用于最小化通常通过数字化模拟信号而产生的失真。
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89.发明授权Remote control system having symmetrical tone, send/receive signaling circuits for radio communications 失效具有对称音调的遥控系统，用于无线电通信的发送/接收信令电路
公开(公告)号：US4654881A
公开(公告)日：1987-03-31
申请号：US568170
申请日：1984-01-04
CPC分类号： H03G1/02
摘要： The remote control system having symmetrical signaling circuits for radio communications is coupled to a single wire line/audio channel and permits two or more units, base stations and/or remote consoles, to be coupled to the single wire line. Each signaling circuit comprises a wire line coupler for coupling to the wire line, an audio input line and an audio output line. An automatic gain control circuit is coupled between the wire coupler and the audio output line and a filter and line driver are coupled between the audio input line and the wire coupler. A control unit including a microprocessor, a tone encoder, a tone decoder, a timer, a clock, and a memory is coupled by output lines to the automatic gain control circuit for controlling the modes of operation thereof which include a slow decay mode, a fast decay mode, an adapt mode and a hold gain mode. The output from the gain control circuit is also routed through a band pass filter and a limiter to the control unit. Further, the tone encoder of the control unit is coupled to a summing circuit situated between the filter and line driver through a filter and level control circuit.The protocol programmed in the microprocessor enables any unit to take control of the audio channel by initiating the sending of a message. Also mute gates are provided for disabling audio output or audio input while a message is being sent or received over the audio channel.
摘要翻译： 具有用于无线电通信的对称信令电路的遥控系统耦合到单个有线线路/音频信道，并且允许两个或更多个单元，基站和/或远程控制台耦合到单个有线线路。 每个信号电路包括用于耦合到有线线路的有线线路耦合器，音频输入线路和音频输出线路。 自动增益控制电路耦合在线耦合器和音频输出线之间，并且滤波器和线路驱动器耦合在音频输入线和线耦合器之间。 包括微处理器，音调编码器，音调解码器，定时器，时钟和存储器的控制单元通过输出线耦合到自动增益控制电路，用于控制其运行模式，其包括慢衰减模式， 快速衰减模式，适应模式和保持增益模式。 来自增益控制电路的输出也通过带通滤波器和限幅器被路由到控制单元。 此外，控制单元的音调编码器通过滤波器和电平控制电路耦合到位于滤波器和线路驱动器之间的求和电路。 微处理器中编程的协议使任何单元能够通过发送消息来控制音频通道。 还提供静音门，用于在通过音频通道发送或接收消息时禁用音频输出或音频输入。
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公开(公告)号：US07822544B2
公开(公告)日：2010-10-26
申请号：US11243618
申请日：2005-10-05
申请人： Michael D. Kotzin
发明人： Michael D. Kotzin
IPC分类号： G01C21/00
CPC分类号： G01C21/3453 , G08G1/096811 , G08G1/096838
摘要： A method and system of providing navigation information is provided. The method comprises obtaining (105) a communication requirement of a user and determining (110) at least one navigation route for the user based on the communication requirement dependent upon network considerations along the route. The method further comprises providing (115) the at least one navigation route to the user based on the communication requirement.
摘要翻译： 提供了提供导航信息的方法和系统。 该方法包括获得（105）用户的通信需求，并且基于取决于沿着路线的网络考虑的通信要求确定（110）用户的至少一个导航路线。 该方法还包括基于通信要求向用户提供（115）至少一个导航路线。
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