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    • 23. 发明授权
    • Synchronization scheme for digital communications systems transporting
data at a customer-controlled rate
    • 以客户控制的速率传输数据的数字通信系统的同步方案
    • US5521949A
    • 1996-05-28
    • US891500
    • 1992-05-29
    • Gang HuangJean-Jacques Werner
    • Gang HuangJean-Jacques Werner
    • H04B3/23H04L27/34H04L23/00H04L5/12
    • H04L27/3455
    • A synchronization scheme for bidirectional data applications where the customer supplies data for transmission at a rate which is customer controlled. In accordance with the present invention, in each transmission direction, the customer data is converted into data symbols in a predetermined constellation. In response to these data symbols, additional symbols are added. In the disclosed embodiment, the additional symbols added are symbols lying outside of the constellation and are not used to represent customer data. The additional symbols added raise the symbol rate in each transmission direction to one higher than that provided by the symbols representative of the customer data alone. This higher symbol rate in each transmission direction is preferably the same, or the higher symbol rate in one direction is related to the higher symbol rate in the other direction by a rational number. At each receiver, the additional symbols are removed and customer data is recovered from its representative data symbols.
    • 用于双向数据应用的同步方案,其中客户以用户控制的速率提供用于传输的数据。 根据本发明,在每个传输方向上,客户数据被转换成预定星座中的数据符号。 响应于这些数据符号,添加附加符号。 在所公开的实施例中,添加的附加符号是位于星座之外的符号,并且不用于表示客户数据。 添加的附加符号将每个传输方向的符号速率提高到比代表客户数据的符号提供的符号速率高一个。 每个发送方向上的这种较高的符号率优选相同,或者一个方向上较高的符号率与另一个方向上的较高符号率相关联。 在每个接收机处,除去附加符号并从其代表数据符号恢复客户数据。
    • 24. 发明授权
    • Crosstalk suppression technique
    • 串扰抑制技术
    • US5483551A
    • 1996-01-09
    • US100584
    • 1993-07-30
    • Gang HuangGi-Hong ImJean-Jacques Werner
    • Gang HuangGi-Hong ImJean-Jacques Werner
    • H04M1/74H04B3/20H04B3/23H04B7/015H04B1/38H04L5/16
    • H04B3/23
    • To reduce near-end crosstalk (NEXT) in systems possessing excess bandwidth, a signal is transmitted from a first to a second location. At the second location, the received signal is examined and a characteristic of this signal is determined while the delay provided in the transmit signal path at this location is varied. Based on this examination, a particular amount of delay is introduced into the transmit signal path which reduces NEXT. This process is repeated for each direction of transmission. In the disclosed embodiment, the characteristic of the received signal which is determined is the mean square error and the amount of delay selected is that corresponding to the minimum mean square error.
    • 为了减少具有超额带宽的系统中的近端串扰(NEXT),信号从第一位置传输到第二位置。 在第二位置,检测接收到的信号,并且确定该信号的特性,同时在该位置处的发送信号路径中提供的延迟是变化的。 基于该检查,将特定量的延迟引入到减少NEXT的发送信号路径中。 对于每个传输方向重复该过程。 在所公开的实施例中,确定的接收信号的特性是均方误差,所选择的延迟量是对应于最小均方误差。
    • 25. 发明授权
    • Low jitter RF distribution system
    • 低抖动射频分配系统
    • US08270844B2
    • 2012-09-18
    • US12625135
    • 2009-11-24
    • Russell WilcoxLawrence DoolittleGang Huang
    • Russell WilcoxLawrence DoolittleGang Huang
    • H04B10/00
    • H04L7/0075H04B10/2575H04L7/0008
    • A timing signal distribution system includes an optical frequency stabilized laser signal amplitude modulated at an rf frequency. A transmitter box transmits a first portion of the laser signal and receive a modified optical signal, and outputs a second portion of the laser signal and a portion of the modified optical signal. A first optical fiber carries the first laser signal portion and the modified optical signal, and a second optical fiber carries the second portion of the laser signal and the returned modified optical signal. A receiver box receives the first laser signal portion, shifts the frequency of the first laser signal portion outputs the modified optical signal, and outputs an electrical signal on the basis of the laser signal. A detector at the end of the second optical fiber outputs a signal based on the modified optical signal. An optical delay sensing circuit outputs a data signal based on the detected modified optical signal. An rf phase detect and correct signal circuit outputs a signal corresponding to a phase stabilized rf signal based on the data signal and the frequency received from the receiver box.
    • 定时信号分配系统包括以rf频率幅度调制的光频稳定激光信号。 发射机箱传输激光信号的第一部分并接收修改的光信号,并输出激光信号的第二部分和修改的光信号的一部分。 第一光纤携带第一激光信号部分和修改的光信号,第二光纤承载激光信号的第二部分和返回的修改光信号。 接收箱接收第一激光信号部分,使第一激光信号部分的频率偏移输出修改的光信号,并且基于激光信号输出电信号。 在第二光纤端部的检测器基于修改的光信号输出信号。 光延迟检测电路基于检测到的修改光信号输出数据信号。 rf相位检测和正确信号电路基于数据信号和从接收盒接收的频率输出与相位稳定的rf信号对应的信号。
    • 26. 发明申请
    • METHOD AND APPARATUS FOR TRANSMITTING HEADER-COMPRESSED PACKET BASED ON RETRANSMISSION MECHANISM
    • 基于恢复机制传输压缩包的方法和装置
    • US20120189023A1
    • 2012-07-26
    • US13436280
    • 2012-03-30
    • Gang HuangDai ShiLei LuWenliang Liang
    • Gang HuangDai ShiLei LuWenliang Liang
    • H04L29/00
    • H04L1/16H04L1/0006
    • A method for transmitting a header-compressed packet based on a retransmission mechanism is disclosed according to the present disclosure. The method mainly includes: a header compressor of a sending device obtains feedback information of a header-compressed packet in a transmission process; and the header compressor determines a state of the header compressor according to the feedback information, compresses a header for the packet according to the state of the header compressor, and sends the packet to a decompressor of a receiving device. According to the present disclosure, a header compression mechanism is combined with an automatic retransmission mechanism, so that the header compressor obtains feedback information of an automatic retransmission technology, and estimates the decompression information of the decompressor correctly, so as to change a state machine of the header compressor at proper time and improve transmission efficiency of the packet.
    • 根据本公开公开了一种用于基于重传机制来发送报头压缩分组的方法。 该方法主要包括:发送装置的报头压缩器在发送处理中获得报头压缩分组的反馈信息; 并且头压缩器根据反馈信息确定报头压缩器的状态,根据报头压缩器的状态来压缩分组的报头,并将该分组发送到接收装置的解压缩器。 根据本公开,头部压缩机构与自动重发机制组合,使得报头压缩器获得自动重传技术的反馈信息,并且正确地估计解压缩器的解压缩信息,以便改变状态机 报头压缩器在适当的时间,提高分组的传输效率。
    • 30. 发明授权
    • Computer-aided learning system and method with adaptive optimization
    • 计算机辅助学习系统和自适应优化方法
    • US08838016B2
    • 2014-09-16
    • US12953724
    • 2010-11-24
    • Haiqing WeiGang HuangJuhua Mao
    • Haiqing WeiGang HuangJuhua Mao
    • G09B3/00G09B7/00
    • G09B7/00
    • A computer-aided learning system with adaptive optimization is disclosed. The system may comprise a storage module configured for storing learning data; a man-machine interface configured for providing the learning data to at least one learner; an information collection module configured for tracking and recording an interactive learning process; a learning process analysis module configured for receiving the interactional learning process provided by the information collection module, the learning process analysis module further configured for analyzing the interactional learning process and forming a control signal; and a learning strategy generation module configured for receiving the control signal from the learning process analysis module, the learning strategy generation module further configured for generating a learning strategy signal based on the control signal; wherein the man-machine interface is configured to provide the learning data to the at least one learner based on the learning strategy signal.
    • 公开了一种具有自适应优化的计算机辅助学习系统。 该系统可以包括被配置为存储学习数据的存储模块; 人机界面,被配置为将学习数据提供给至少一个学习者; 信息收集模块,被配置为跟踪和记录交互式学习过程; 学习过程分析模块,被配置为接收由所述信息收集模块提供的交互学习过程,所述学习过程分析模块还被配置用于分析所述交互学习过程并形成控制信号; 以及学习策略生成模块,被配置为从所述学习处理分析模块接收所述控制信号,所述学习策略生成模块还被配置为基于所述控制信号生成学习策略信号; 其中所述人机界面被配置为基于所述学习策略信号将所述学习数据提供给所述至少一个学习者。