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1. 发明授权

US09325535B2 Apparatus and methods for variable DC bias to improve linearity in signal processing circuits 有权
标题翻译：用于可变直流偏置的装置和方法，以改善信号处理电路中的线性度
公开(公告)号：US09325535B2
公开(公告)日：2016-04-26
申请号：US13627802
申请日：2012-09-26
申请人： Skyworks Solutions, Inc.
发明人： George Khoury
IPC分类号： H04L25/02 , H04B1/04 , H03F1/32 , H03F3/191 , H03F3/24
CPC分类号： H04L25/06 , H03F1/32 , H03F3/191 , H03F3/245 , H03F2200/18 , H03F2200/294 , H04B1/0475 , H04L25/0284
摘要： To maintain linear operation of a signal processing circuit, such as a low noise amplifier, a peak detector detects a peak of a signal associated with the signal processing circuit and compares the detected peak signal with a threshold. When the detected peak signal is greater than the threshold, a variable current source biases the signal processing circuit to place the signal processing circuit in a different mode of operation. The signal processing circuit may thereby process a larger input signal while operating in an acceptable linear region.
摘要翻译：为了保持诸如低噪声放大器的信号处理电路的线性操作，峰值检测器检测与信号处理电路相关联的信号的峰值，并将检测到的峰值信号与阈值进行比较。当检测到的峰值信号大于阈值时，可变电流源偏置信号处理电路以使信号处理电路处于不同的操作模式。因此，信号处理电路可以在可接受的线性区域中工作时处理更大的输入信号。

2. 发明申请

US20160073379A1 TONE PLAN FOR LTF COMPRESSION 审中-公开
标题翻译：用于LTF压缩的音调计划
公开(公告)号：US20160073379A1
公开(公告)日：2016-03-10
申请号：US14843538
申请日：2015-09-02
申请人： Qualcomm Incorporated
发明人： Lin YANG , Dung Ngoc DOAN , Bin TIAN , Sameer VERMANI
IPC分类号： H04W72/04 , H04W28/20 , H04L25/02
CPC分类号： H04W72/04 , H04L5/0044 , H04L5/0048 , H04L25/0284 , H04L27/2602 , H04W28/20
摘要： A method, an apparatus, and a computer program product for wireless communication are provided. In one aspect, an apparatus is configured to transmit user data in a first symbol of a first symbol type. The first symbol type has a first symbol duration, a first frequency bandwidth, and a first tone plan. The first tone plan includes a first valid start tone index, a first valid end tone index, and a first set of DC tones. The apparatus is further configured to transmit an LTF in a second symbol of a second symbol type. The second symbol type has a second symbol duration, a second frequency bandwidth, and a second tone plan. The second tone plan includes a second valid start tone index, a second valid end tone index, and a second set of DC tones.
摘要翻译：提供了一种用于无线通信的方法，装置和计算机程序产品。一方面，一种装置被配置为以第一符号类型的第一符号传送用户数据。第一符号类型具有第一符号持续时间，第一频率带宽和第一音调计划。第一音调计划包括第一有效起始音调索引，第一有效结束音调索引和第一组DC音调。该装置还被配置为在第二符号类型的第二符号中发送LTF。第二符号类型具有第二符号持续时间，第二频率带宽和第二音调计划。第二音调方案包括第二有效起始音调索引，第二有效结束音调索引和第二组DC音调。

3. 发明申请

US20150188689A1 DATA SIGNAL TRANSCEIVER CIRCUITRY FOR PROVIDING SIMULTANEOUS BI-DIRECTIONAL COMMUNICATION VIA A COMMON CONDUCTOR PAIR 审中-公开
标题翻译：数据信号收发器电路，用于通过公共导体对提供同时的双向通信
公开(公告)号：US20150188689A1
公开(公告)日：2015-07-02
申请号：US14582911
申请日：2014-12-24
申请人： National Semiconductor Corporation
发明人： Vijaya G. Ceekala , Qingping Zheng , Min Du , Xin Liu , Chandrakumar R. Pathi
IPC分类号： H04L5/14 , H04L29/08
CPC分类号： H04L5/1415 , H04L5/1461 , H04L25/0276 , H04L25/0284 , H04L25/0296 , H04L25/0298 , H04L25/4904 , H04L67/12
摘要： Interface circuitry and method for transmitting and receiving downstream and upstream data signals simultaneously via a common conductor pair. The composite signal containing the downstream and upstream data signal components being conveyed by the common conductor pair is isolated, e.g., via signal filtering or buffering, and combined with an appropriately scaled inverse replica of the outgoing upstream data signal to subtract out upstream data signal components and thereby provide the downstream data signal substantially free of any upstream data signal components.
摘要翻译：用于经由公共导体对同时发送和接收下游和上游数据信号的接口电路和方法。包含由公共导体对传送的下游和上游数据信号分量的复合信号例如通过信号滤波或缓冲被隔离，并且与输出上行数据信号的适当缩放的反向副本相结合以减去上行数据信号分量从而提供基本上没有任何上行数据信号分量的下行数据信号。

4. 发明申请

US20150139340A1 SYSTEM AND METHOD FOR DIGITAL SIGNALING 审中-公开
标题翻译：数字信号的系统与方法
公开(公告)号：US20150139340A1
公开(公告)日：2015-05-21
申请号：US14401644
申请日：2013-05-03
申请人： BRILLIANT POINTS, INC.
发明人： Karl Christopher Hansen
IPC分类号： H04L25/08 , H03M1/66 , H04L25/06 , H04L27/34 , H04L25/02
CPC分类号： H03M7/3082 , H03M1/12 , H03M1/66 , H04L25/0228 , H04L25/0272 , H04L25/0284 , H04L25/06 , H04L25/08 , H04L27/34 , H04L27/3405 , H04L27/3444 , H04L27/36
摘要： Systems and methods for communicating digital data associated with amplitudes and phases of a virtual periodic waveform having a designated period between components connected by n conductors include, in one embodiment, circuitry that converts a first amplitude and a first phase to a first corresponding voltage or current and applies the first corresponding voltage or current to a first one of the plurality of conductors, and converts the first amplitude and the first phase to (n−1) corresponding voltages or currents based on amplitudes of the periodic waveform phase shifted by about m*(360/n) relative to the first phase where m is indexed from one to (n−1) and applies each corresponding voltage or current to an associated conductor of the plurality of conductors. The systems and methods are particularly suited for reducing the number of conductors to obtain a desired I/O data rate/throughput for integrated circuit chips and wired networks.
摘要翻译：用于传送与由n个导体连接的组件之间的指定周期的虚拟周期性波形的幅度和相位相关联的数字数据的系统和方法包括在一个实施例中将将第一幅度和第一相位转换为第一对应电压或电流的电路并且将第一对应的电压或电流施加到多个导体中的第一导体，并且基于偏移大约m *的周期波形相位的振幅将第一振幅和第一相位转换为（n-1）个对应的电压或电流，（360 / n）相对于其中m从1到（n-1）索引的第一相，并且将每个对应的电压或电流施加到多个导体的相关导体。这些系统和方法特别适用于减少导体数量以获得集成电路芯片和有线网络所需的I / O数据速率/吞吐量。

5. 发明申请

US20140269983A1 APPARATUS FOR IMPROVED COMMUNICATION AND ASSOCIATED METHODS 有权
标题翻译：改进通信和相关方法的设备
公开(公告)号：US20140269983A1
公开(公告)日：2014-09-18
申请号：US13799231
申请日：2013-03-13
申请人： Altera Corporation
发明人： Gregg William Baeckler , David W. Mendel
IPC分类号： H04L1/00
CPC分类号： H04L1/009 , H04L1/203 , H04L25/0284 , H04L25/4915
摘要： An apparatus includes a transmitter adapted to transmit encoded information to a communication link. The transmitter includes a DC balance skew generator. The DC balance skew generator is adapted to skew a DC balance of the information before information is provided to the communication link.
摘要翻译：一种装置包括适于将编码信息发送到通信链路的发射机。发射机包括直流平衡偏斜发生器。直流平衡偏斜发生器适于在将信息提供给通信链路之前扭曲信息的直流平衡。

6. 发明授权

US08098768B2 Compensation of ethernet transmit baseline wander 有权
标题翻译：以太网传输基线漂移补偿
公开(公告)号：US08098768B2
公开(公告)日：2012-01-17
申请号：US12369702
申请日：2009-02-11
申请人： Paul Langner , Hossein Sedarat , Tom Gandy
发明人： Paul Langner , Hossein Sedarat , Tom Gandy
IPC分类号： H04L25/06 , H04L25/10
CPC分类号： H04B3/06 , H04L25/0266 , H04L25/0284 , H04L25/03834 , H04L25/4917
摘要： Compensation of transmit baseline wander in data transmission on a network. In one aspect, compensating for baseline wander includes receiving a signal to be transmitted by a transmitter, where the transmitter is operable with a higher-speed transmission standard requiring magnetics a first open circuit inductance. The signal is processed to compensate for a transmit baseline wander in the signal, the transmit baseline wander associated with a lower-speed transmission standard that requires magnetics with a second open circuit inductance that is higher than the first open circuit inductance. The processed signal is to be provided for transmission on a twisted pair cable of the network.
摘要翻译：网络数据传输中传输基线漂移的补偿。在一个方面，对基线漂移的补偿包括接收要由发射机发射的信号，其中发射机可以用需要磁性的第一开路电感的较高速度传输标准来操作。该信号被处理以补偿信号中的发射基线漂移，该发射基线漂移与低速传输标准相关联，该低速传输标准要求具有高于第一开路电感的第二开路电感的磁性。经处理的信号将被提供用于在网络的双绞线电缆上传输。

7. 发明申请

US20110080973A1 COMMON MODE CANCELLATION IN DIFFERENTIAL NETWORKS 有权
标题翻译：在不同网络中的共同模式取消
公开(公告)号：US20110080973A1
公开(公告)日：2011-04-07
申请号：US12574923
申请日：2009-10-07
申请人： Rubina F. Ahmed , Bradley D. Herrman , Pravin Patel , Peter R. Seidel
发明人： Rubina F. Ahmed , Bradley D. Herrman , Pravin Patel , Peter R. Seidel
IPC分类号： H04L27/00 , H04B15/00
CPC分类号： H04L25/0274 , H04L25/0284
摘要： Embodiments of the invention include a common mode cancellation circuit and method for correcting signal skew in a differential circuit. According to one embodiment, an op amp circuit is used to correct the mismatch between transmission line lengths in the differential circuit. The CMCC can be embodied as an ASIC and added on to an existing differential signaling systems to correct and compensate for board wiring skew or other causes of phase misalignment. The result is restoration of the cross-over intersection of the plus and minus signals of the differential pair closer to the common voltage level point, as if the signals had been in phase.
摘要翻译：本发明的实施例包括用于校正差分电路中的信号偏移的共模消除电路和方法。根据一个实施例，使用运算放大器电路来校正差分电路中的传输线路长度之间的失配。 CMCC可以实现为ASIC，并添加到现有的差分信号系统上，以纠正和补偿电路板布线偏移或相位未对准的其他原因。结果是恢复差分对的正负信号与公共电压电平点的交叉交叉，好像信号是同相的。

8. 发明授权

US07504863B2 Half-duplex communication system, low-voltage differential signaling transceiver of the system and pre-driver of the transceiver 有权
标题翻译：半双工通信系统，系统的低压差分信令收发器和收发器的预驱动器
公开(公告)号：US07504863B2
公开(公告)日：2009-03-17
申请号：US11455776
申请日：2006-06-20
申请人： Jin Hyun Kim
发明人： Jin Hyun Kim
IPC分类号： H03K19/0175 , H03K19/094
CPC分类号： H04L5/16 , H04L25/0272 , H04L25/028 , H04L25/0284
摘要： A half-duplex communication system may include one or more low-voltage differential signaling half-duplex transceivers. Each transceiver may include a plurality of input terminals receiving a plurality differential data signals, an input driver transferring the differential data signals from differential transmission lines through output terminals, and an output driver transferring the differential data signals from the input terminals through the differential transmission lines and out to one of the first and second transceivers via the non-inverse and inverse transmission lines. The differential data signals may be transferred in response to the differential data signals at the input terminals and at the output terminals of the input driver. Each transceiver may include a pre-driver configured to shift a reference voltage level of differential data signals input thereto from the input terminals and which are to be supplied to the output driver therefrom.
摘要翻译：半双工通信系统可以包括一个或多个低压差分信号半双工收发器。每个收发器可以包括多个输入端子，其接收多个差分数据信号，输入驱动器通过输出端子从差分传输线路传送差分数据信号;以及输出驱动器，通过差分传输线路将输入端子的差分数据信号并通过非反相和反向传输线路输出到第一和第二收发器中的一个。差分数据信号可以响应于输入端和输入驱动器的输出端的差分数据信号传送。每个收发器可以包括预驱动器，其被配置为将从输入端子输入的差分数据信号的参考电压电平移位，并且将被提供给输出驱动器。

9. 发明授权

US07504853B2 Arrangement for compensation of ground offset in a data bus system 有权
标题翻译：数据总线系统补偿地面补偿的安排
公开(公告)号：US07504853B2
公开(公告)日：2009-03-17
申请号：US10545050
申请日：2004-02-09
申请人： Bernd Elend
发明人： Bernd Elend
IPC分类号： H03K19/003
CPC分类号： H04L25/061 , H04L25/0284 , H04L25/0296
摘要： A description is given of an arrangement for compensation of ground offset in a data bus system comprising a plurality of communication devices (2, 10) which are each supplied with an operating voltage (U0) by a voltage source (4; 14), are connected to ground (G1); G2) and have a data bus connection (6; 12) via which they are connected to a data bus line (8). The special thing about the invention is that between operating voltage (U0) and ground (G2) at least one voltage dividing device (R3, R6) is connected whose output is coupled to the data bus connection (12) of at least one communication device (10) and whose voltage dividing ratio is selected such that an offset of the ground (G2) of the communication device (10), whose data bus connection (12) is coupled to the voltage dividing device (R3, R6), is in essence compensated compared to ground (G1) of another communication device (2).
摘要翻译：给出了包括多个通过电压源（4; 14）被提供有工作电压（U0）的多个通信装置（2,10）的数据总线系统中补偿接地偏移的装置的描述，连接到地面（G1）; G2）并具有数据总线连接（6; 12），通过它们连接到数据总线（8）。关于本发明的特别之处在于，在工作电压（U0）和地（G2）之间，连接至少一个分压装置（R3，R6），其输出耦合到至少一个通信装置的数据总线连接（12）（10）并且其分压比被选择为使得其数据总线连接（12）耦合到分压装置（R3，R6）的通信装置（10）的接地（G2）的偏移处于与另一个通信设备（2）的接地（G1）相比，本质补偿。

10. 发明申请

US20090034648A1 Method and Apparatus for Sending DC-Balanced Signals Over a Transmission Line 有权
标题翻译：用于在传输线路上发送直流平衡信号的方法和装置
公开(公告)号：US20090034648A1
公开(公告)日：2009-02-05
申请号：US11831593
申请日：2007-07-31
申请人： Bernd Wuppermann
发明人： Bernd Wuppermann
IPC分类号： H04L25/34
CPC分类号： H04L25/0284
摘要： A DC-balanced signal is imposed on the input of a transmission line. Prior to imposing the DC-balanced signal, the input of the transmission line is held at an intermediate DC level that intermediate between the maximum and minimum DC levels of the DC-balanced signal. Alternatively, a compensating pulse is additionally imposed on the input of the transmission line. The compensating pulse compensates for a change in the DC level at the output of the transmission line caused by the imposing of the DC-balanced signal on the input of the transmission line.
摘要翻译：直流平衡信号施加在传输线的输入端。在施加直流平衡信号之前，传输线的输入保持在直流平衡信号的最大和最小直流电平之间的中间直流电平。或者，补偿脉冲另外施加在传输线的输入端。补偿脉冲补偿由传输线输入端施加直流平衡信号引起的传输线输出端的直流电平变化。

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