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71. 发明授权

US08842766B2 Apparatus and method for reducing interference signals in an integrated circuit using multiphase clocks 有权
标题翻译：使用多相时钟减少集成电路中的干扰信号的装置和方法
公开(公告)号：US08842766B2
公开(公告)日：2014-09-23
申请号：US12752082
申请日：2010-03-31
申请人： Indu Prathapan , Anjana Ghosh , Diganta Baishya , Sundarrajan Rangachari , Sankar Prasad Debnath , Ranjit Kumar Dash , Srinath Mathur Ramaswamy
发明人： Indu Prathapan , Anjana Ghosh , Diganta Baishya , Sundarrajan Rangachari , Sankar Prasad Debnath , Ranjit Kumar Dash , Srinath Mathur Ramaswamy
IPC分类号： G06F1/04 , G06F1/10 , G06F1/06 , H04B15/00 , H04B1/00 , H04L27/10 , H03D1/04
CPC分类号： G06F1/06 , G06F1/10
摘要： An apparatus and method for reducing interference signals using multiphase clocks. An integrated circuit includes a digital circuit and an analog circuit. The digital circuit includes a derived clock circuit configured to receive a root clock having a frequency D*f, D being a divide factor, to divide the root clock by D, and generate multiphase clocks having N phases. N circuits of the digital circuit are configured to receive a corresponding one of the N phases, with edges of the multiphase clocks being spread over the N phases. The multiphase clocks cause a frequency shift in interference signals generated by reduced periodic peak currents drawn by the N circuits from f to N*f and harmonics thereof. The analog circuit receives an in-band range of signals. A value of N is configured to shift the interference signals outside the in-band range of signals.
摘要翻译：一种使用多相时钟减少干扰信号的装置和方法。集成电路包括数字电路和模拟电路。数字电路包括导出的时钟电路，其被配置为接收具有频率D * f，D作为除数的根时钟，以将根时钟除以D，并且生成具有N个相位的多相时钟。数字电路的N个电路被配置为接收N个相位中的相应的一个，多相时钟的边沿分布在N个相位上。多相时钟引起由N电路从f至N * f和其谐波所减少的周期性峰值电流产生的干扰信号的频移。模拟电路接收带内范围的信号。 N值被配置为将干扰信号移动到信号的带内范围之外。

72. 发明授权

US08537928B2 Channel estimation methods and systems based on power measurement at receivers 有权
标题翻译：基于接收机功率测量的信道估计方法和系统
公开(公告)号：US08537928B2
公开(公告)日：2013-09-17
申请号：US12901076
申请日：2010-10-08
申请人： Mohammad A. Khojastepour , Karthikeyan Sundaresan , Sampath Rangarajan
发明人： Mohammad A. Khojastepour , Karthikeyan Sundaresan , Sampath Rangarajan
IPC分类号： H04L27/10
CPC分类号： H04L25/0208 , H04B7/0684 , H04L25/0228
摘要： Methods and systems that enable the determination of accurate channel estimates by measuring only power values of pilot signal transmissions at a receiver are described. Various measurement procedures that are based on average power measurements or short term, per-symbol measurements can be employed. Furthermore, procedures utilizing adaptive pilots generated with receiver feedback and deterministic pilots generated without receiver feedback are also described.
摘要翻译：描述通过仅测量接收机处的导频信号传输的功率值来确定准确的信道估计的方法和系统。可以采用基于平均功率测量或短期，每符号测量的各种测量程序。此外，还描述了利用由接收机反馈产生的自适应导频和无接收机反馈产生的确定性导频的程序。

73. 发明授权

US08504015B2 Short-range wireless relay method and system 有权
标题翻译：短距离无线中继方式及系统
公开(公告)号：US08504015B2
公开(公告)日：2013-08-06
申请号：US13005494
申请日：2011-01-12
申请人： Ning Ge , Yi Zhang , Zhiwei Meng
发明人： Ning Ge , Yi Zhang , Zhiwei Meng
IPC分类号： H04W4/00 , H04M1/00 , G06F15/16 , H04B7/14 , H04L12/26 , H04L27/10 , H04J3/06
CPC分类号： H04W88/04 , H04W60/005 , H04W88/06
摘要： A wireless relay apparatus is provided. The wireless relay apparatus includes a first wireless module configured to couple with a wireless access network to receive a phone call, and a second wireless module coupled to the first wireless module to process the phone call and configured to wirelessly connect to a mobile terminal such that the telephone call is forwarded to the mobile terminal over a short-range wireless link. Further, the second wireless module is configured to operate in one of a transparent mode and a translation mode so as to exchange voice data with the mobile terminal.
摘要翻译：提供一种无线中继装置。所述无线中继装置包括被配置为与无线接入网络耦合以接收电话呼叫的第一无线模块，以及耦合到所述第一无线模块以处理所述电话呼叫并被配置为无线地连接到移动终端的第二无线模块，电话呼叫通过短距离无线链路转发到移动终端。此外，第二无线模块被配置为以透明模式和转换模式之一操作，以便与移动终端交换话音数据。

74. 发明授权

US08503568B1 Differential encoding for multiplexed data streams 有权
标题翻译：多路复用数据流的差分编码
公开(公告)号：US08503568B1
公开(公告)日：2013-08-06
申请号：US11517729
申请日：2006-09-07
申请人： Brian K. Pheiffer , Chak M. Chie
发明人： Brian K. Pheiffer , Chak M. Chie
IPC分类号： H04L27/10
CPC分类号： H04L27/2331 , H04L27/2075
摘要： A differential encoding and decoding system and method for multiplexed data is disclosed. The multiplexed data is formed from a plurality of input data sources. The differential encoding and decoding uses a delay proportional to the number of input data streams in the plurality. In this fashion, errors that propagate from an error in one of the input data sources does not interfere with other input data sources upon de-multiplexing.
摘要翻译：公开了一种用于复用数据的差分编码和解码系统和方法。复用数据由多个输入数据源形成。差分编码和解码使用与多个输入数据流的数量成比例的延迟。以这种方式，在一个输入数据源中从错误传播的错误在解复用时不会干扰其他输入数据源。

75. 发明授权

US08391420B1 Low frequency communication signal state detection 有权
标题翻译：低频通信信号状态检测
公开(公告)号：US08391420B1
公开(公告)日：2013-03-05
申请号：US12721365
申请日：2010-03-10
申请人： Hongming An , Wei Fu , CongQing Xiong , James Ho
发明人： Hongming An , Wei Fu , CongQing Xiong , James Ho
IPC分类号： H04L27/00 , H04L27/10 , H02P11/00
CPC分类号： H04L25/0272 , H04L25/0292
摘要： Various techniques are provided to detect a state of a communication signal. In one example, a method of detecting a state of a signal includes receiving a differential communication signal comprising a positive portion and a complementary negative portion. The method also includes filtering the positive portion of the communication signal through a first low pass filter to provide a filtered positive portion of the communication signal. The method also includes filtering the negative portion of the communication signal through a second low pass filter to provide a filtered negative portion of the communication signal. The method also includes comparing the filtered positive portion of the communication signal with an internal reference voltage. The method also includes comparing the filtered negative portion of the communication signal with the internal reference voltage. The method also includes generating a low frequency detect signal in response to the comparing operations to indicate whether the communication signal is in a low frequency state.
摘要翻译：提供各种技术来检测通信信号的状态。在一个示例中，检测信号状态的方法包括接收包括正部分和互补负部分的差分通信信号。该方法还包括通过第一低通滤波器对通信信号的正部分进行滤波，以提供经过滤波的通信信号的正部分。该方法还包括通过第二低通滤波器对通信信号的负部分进行滤波，以提供经过滤波的通信信号的负部分。该方法还包括将通信信号的经滤波的正部分与内参考电压进行比较。该方法还包括将通信信号的滤波后的负部分与内部基准电压进行比较。该方法还包括响应于比较操作产生低频检测信号，以指示通信信号是否处于低频状态。

76. 发明授权

US08379754B2 Method and device for predicting a figure of merit from a distribution 有权
标题翻译：从分布中预测品质因数的方法和装置
公开(公告)号：US08379754B2
公开(公告)日：2013-02-19
申请号：US12415449
申请日：2009-03-31
申请人： Stefan Erb
发明人： Stefan Erb
IPC分类号： H04L27/10
CPC分类号： G01R31/31708 , G01R29/26 , H04L1/205
摘要： Embodiments of the invention relate to methods and devices for predicting a figure of merit from a distribution at least including scalably normalizing the distribution to approximate a predetermined part of the normalized distribution.
摘要翻译：本发明的实施例涉及用于从分布预测品质因数的方法和装置，所述方法和装置至少包括可分级地将分布归一化以近似于归一化分布的预定部分。

77. 发明授权

US08355460B2 Radio transmitter system and method 有权
标题翻译：射频发射机系统及方法
公开(公告)号：US08355460B2
公开(公告)日：2013-01-15
申请号：US13114392
申请日：2011-05-24
申请人： Daniel L. Dickey
发明人： Daniel L. Dickey
IPC分类号： H04L27/10
CPC分类号： H04L27/12 , H03F1/0222 , H03F3/217 , H03F3/24 , H03F2200/102 , H04L25/03828 , H04L27/2017 , H04L27/361
摘要： A radio transmitter system responsive to a binary signal drives a narrow bandwidth VLF or LF antenna. A generator derives a first variable frequency wave frequency coded based on bit values of a binary signal. An arbitrary impulse response signal processor responsive to the first wave derives a first output signal having real and imaginary components representing the shape of a modulating wave having a variable amplitude envelope and the frequency of the coded values. A transmitter responsive to the processor output signal and a VLF or LF carrier supplies the antenna with another output signal including a modulation wave having a shape that is a substantial replica of the modulating wave shape. The processor causes the signal emitted by the antenna system to include modulation having a shape that is substantially the shape of the first wave.
摘要翻译：响应于二进制信号的无线电发射机系统驱动窄带宽VLF或LF天线。发生器基于二进制信号的位值导出编码的第一可变频率频率频率。响应于第一波的任意脉冲响应信号处理器产生具有表示具有可变幅度包络和编码值的频率的调制波的形状的实部和虚部的第一输出信号。响应于处理器输出信号的发射机和VLF或LF载波向天线提供包括具有调制波形的实质复制形状的调制波的另一输出信号。处理器使由天线系统发射的信号包括基本上为第一波形的形状的调制。

78. 发明授权

US08265193B2 Method and system for communicating data over a wireless communication system voice channel utilizing frame gaps 有权
标题翻译：通过利用帧间隙在无线通信系统语音信道上传送数据的方法和系统
公开(公告)号：US08265193B2
公开(公告)日：2012-09-11
申请号：US10802147
申请日：2004-03-17
申请人： Sethu K. Madhavan , Fahd Z. Laghrari , James J. Piwowarski
发明人： Sethu K. Madhavan , Fahd Z. Laghrari , James J. Piwowarski
IPC分类号： H04L27/10 , H04L23/00
CPC分类号： H04L27/04 , H04L1/0018
摘要： The present invention provides a method for communicating data over a voice channel of a wireless communication system. The method includes receiving a first periodic data signal and modulating the first periodic data signal to produce a second periodic data signal. Modulating the first periodic data signal includes inserting a predetermined silence period into the first periodic data signal at timed intervals to produce the second periodic data signal. The method further includes communicating the second periodic data signal over the voice channel of the wireless communication system. The method of modulating the first periodic data signal may include receiving a control signal that includes parameters for a length of the predetermined silence period and timing of the intervals, modulating the first periodic data signal responsive to the received control signal, and producing the second periodic data signal.
摘要翻译：本发明提供了一种用于在无线通信系统的语音信道上传送数据的方法。该方法包括接收第一周期性数据信号并调制第一周期性数据信号以产生第二周期性数据信号。调制第一周期性数据信号包括以定时的间隔将预定的静默周期插入到第一周期数据信号中，以产生第二周期数据信号。该方法还包括在无线通信系统的语音信道上传送第二周期性数据信号。调制第一周期性数据信号的方法可以包括接收控制信号，该控制信号包括预定静默期的长度和间隔的定时的参数，响应于所接收的控制信号调制第一周期性数据信号，并产生第二周期数据信号。

79. 发明授权

US08194526B2 Method for data communication via a voice channel of a wireless communication network 有权
标题翻译：通过无线通信网络的语音信道进行数据通信的方法
公开(公告)号：US08194526B2
公开(公告)日：2012-06-05
申请号：US11163579
申请日：2005-10-24
申请人： Sethu K. Madhavan , Iqbal M. Surti , Jijun Yin
发明人： Sethu K. Madhavan , Iqbal M. Surti , Jijun Yin
IPC分类号： H04L27/10
CPC分类号： H04L27/2071 , H04L27/2331
摘要： A system and method for data communication over a cellular communications network that allows the transmission of digital data over a voice channel of the communications network. Digital data is encoded into DBPSK data using differential binary phase shift keying encoding. The DBPSK data is then sent across the cellular network using a vocoder having a linear predictive or other speech compression codec. At the receiving end, the DBPSK data is demodulated back into the original digital data. This approach permits data communication via a CDMA, GSM, or other type of voice traffic channel at a low bit error rate.
摘要翻译：一种通过蜂窝通信网络进行数据通信的系统和方法，其允许通过通信网络的语音信道传输数字数据。使用差分二进制相移键控编码将数字数据编码为DBPSK数据。然后，使用具有线性预测或其他语音压缩编解码器的声码器，通过蜂窝网络发送DBPSK数据。在接收端，将DBPSK数据解调回原来的数字数据。该方法允许通过CDMA，GSM或其他类型的语音业务信道以低误码率进行数据通信。

80. 发明授权

US08093942B2 Frequency translation module data clamp 有权
标题翻译：频率转换模块数据钳位
公开(公告)号：US08093942B2
公开(公告)日：2012-01-10
申请号：US12227265
申请日：2007-03-08
申请人： Robert Alan Pitsch , George Luis Irizarry , John Alan Longardner
发明人： Robert Alan Pitsch , George Luis Irizarry , John Alan Longardner
IPC分类号： H03D3/00 , H03K5/02 , H03K5/08 , H03K9/06 , H04L27/10 , H04L27/14
CPC分类号： H04N7/20 , H04H40/90
摘要： An architecture for processing signal communications between a frequency translation module and an integrated receiver decoder. According to an exemplary embodiment, the signal processing apparatus comprises a demodulator for generating a first signal responsive to an FSK signal, said first signal comprising a varying amplitude and a clamping means for generating a second signal, wherein said second signal has a first value when the amplitude of the first signal is above a predetermined value, and wherein said second signal has a second value when the amplitude is below a second predetermined value.
摘要翻译：用于处理频率转换模块和集成接收机解码器之间的信号通信的架构。根据示例性实施例，信号处理装置包括：解调器，用于响应于FSK信号产生第一信号，所述第一信号包括变化的幅度和用于产生第二信号的钳位装置，其中所述第二信号具有第一值，第一信号的幅度高于预定值，并且其中当振幅低于第二预定值时，所述第二信号具有第二值。

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