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21. 发明授权

US06445719B1 Method, system and apparatus for reducing synchronization and resynchronization times for systems with pulse stuffing 有权
标题翻译：用于减少具有脉冲填充的系统的同步和重新同步时间的方法，系统和装置
公开(公告)号：US06445719B1
公开(公告)日：2002-09-03
申请号：US09384760
申请日：1999-08-27
申请人： Kevin W. Schneider , Jamie Kelly , Dennis B. McMahan , Marc Kimpe
发明人： Kevin W. Schneider , Jamie Kelly , Dennis B. McMahan , Marc Kimpe
IPC分类号： H04L1250
CPC分类号： H04J3/0605 , H04J3/07 , H04L7/10
摘要： A method, system and apparatus for decreasing the time frame synchronization and resynchronization in a data communication uses an long frame sync word formed by combining a frame sync word with stuff bits, wherein the stuff bits are necessary for timing adjustments.
摘要翻译：用于减少数据通信中的时间帧同步和再同步的方法，系统和装置使用通过组合帧同步字与填充位形成的长帧同步字，其中填充位对于定时调整是必需的。

22. 发明授权

US06301340B1 Mechanism for providing emergency POTS service in event of loss of power to customer premises equipment for ISDN telephone lines 有权
标题翻译：在ISDN电话线路的客户端设备丢失电力的情况下提供紧急POTS服务的机制
公开(公告)号：US06301340B1
公开(公告)日：2001-10-09
申请号：US09378530
申请日：1999-08-20
申请人： Michael Scott Sansom , Kevin W. Schneider
发明人： Michael Scott Sansom , Kevin W. Schneider
IPC分类号： H04M1100
CPC分类号： H04Q11/0471
摘要： In order to ensure continuous telephone service to a customer premises served by an ISDN line, without requiring that the customer maintain an additional POTS line as an emergency back-up to the normally used ISDN service, ISDN signalling circuits and network termination interface components are modified, so that, in the event of a loss of power to customer premises digital communications equipment, a communication link between an auxiliary POTS telephone and the normal ISDN communication path to the central office may be established. There need not be any modification of the central office switch, per se, so that the integrity of the ISDN communication path with the central office line card remains unaffected. As a result, the central office equipment can continue to conduct standard ISDN communications with the customer premises equipment, even though the customer is employing a POTS back-up analog phone.
摘要翻译：为了确保对由ISDN线路服务的客户端口的连续电话服务，不要求客户将额外的POTS线路作为通常使用的ISDN服务的紧急备援，ISDN信令电路和网络终端接口组件被修改，使得在客户数字通信设备的电力损失的情况下，可以建立辅助POTS电话与到中心局的正常ISDN通信路径之间的通信链路。本地不需要对中心局交换机进行任何修改，使得与中心局线路卡的ISDN通信路径的完整性不受影响。因此，即使客户正在使用POTS备用模拟电话，中心局设备也可以继续与客户端设备进行标准的ISDN通信。

23. 发明授权

US5909445A Mechanism for transporting digital pots signals within framing structure of high bit rate digital local subscriber loop signals 失效
标题翻译：在高比特率数字本地用户环路信号的帧结构内传输数字电台信号的机制
公开(公告)号：US5909445A
公开(公告)日：1999-06-01
申请号：US697052
申请日：1996-08-19
申请人： Kevin W. Schneider
发明人： Kevin W. Schneider
IPC分类号： H04J3/16 , H04J3/22 , H04Q11/04
CPC分类号： H04Q11/0421 , H04J3/1623 , H04J3/22 , Y10S370/914
摘要： A local subscriber loop architecture embeds digitized POTS signals into the framing format of high bit rate digital subscriber loop signals being transported over a local loop for serving both subscriber digital terminal equipment and a POTS telephone. The remote transceiver unit is line-powered from the central office unit, facilitating installation of a reliable (office-powered) POTS interface (containing codec and subscriber line interface circuitry providing BORSHT functions) into the remote unit. The data rate of the added digital POTS signal is relatively small with respect to the data rate of the DSL channels, so that there is only slight increase in the overall data rate. As a consequence, adding the digital POTS signal has negligible impact on transport range. Moreover, the high-complexity analog filters used in an FDM architecture to separate the POTS signal from the DSL signal are not required
摘要翻译：本地用户环路架构将数字化POTS信号嵌入到通过本地环路传输的高比特率数字用户环路信号的成帧格式中，用于为用户数字终端设备和POTS电话服务。远程收发器单元由中央办公室单元进行线路供电，便于将可靠（办公室供电的）POTS接口（包含提供BORSHT功能的编解码器和用户线接口电路）安装到远程单元中。所附加的数字POTS信号的数据速率相对于DSL信道的数据速率相对较小，因此总体数据速率只有轻微的增加。因此，添加数字POTS信号对传输范围的影响可以忽略不计。此外，不需要在FDM架构中用于将POTS信号与DSL信号分离的高复杂度模拟滤波器

24. 发明授权

US5875202A Transmission of encoded data over reliable digital communication link using enhanced error recovery mechanism 失效
标题翻译：使用增强的错误恢复机制在可靠的数字通信链路上传输编码数据
公开(公告)号：US5875202A
公开(公告)日：1999-02-23
申请号：US626232
申请日：1996-03-29
申请人： W. Stuart Venters , Kevin W. Schneider
发明人： W. Stuart Venters , Kevin W. Schneider
IPC分类号： H04L1/00 , G06F11/10
CPC分类号： H04L1/0057
摘要： In order to transport digital data across a reliable digital communication link from a transmit site to a destination site, the data is processed in parallel paths to derive error detection information, such as a cyclic redundancy code, and to encode the data. The outputs of the parallel paths are combined into a composite digital data sequence, which is then transmitted over the reliable digital communication link to the destination site. At the destination site, the encoded digital data component of the composite data sequence is decoded and then subjected to the same error detection operation carried out at the transmit site to derive error detection information associated with the decoded digital data. This recalculated error detection information is compared with the error detection information component contained in the composite digital data sequence. If there is a mismatch, the reliable digital communication link and the encoder at the transmit site and the decoder at the destination site are reset.
摘要翻译：为了将数字数据通过可靠的数字通信链路从发送站点传输到目的地站点，数据以并行路径进行处理，以导出诸如循环冗余码的错误检测信息，并对数据进行编码。并行路径的输出被组合成复合数字数据序列，然后通过可靠的数字通信链路传送到目标站点。在目的地站点，对复合数据序列的编码数字数据分量进行解码，然后进行与发送站点相同的错误检测操作，以导出与解码的数字数据相关联的错误检测信息。将该重新计算的错误检测信息与包含在复合数字数据序列中的错误检测信息成分进行比较。如果存在不匹配，可靠数字通信链路和发送站点处的编码器以及目的站点处的解码器被复位。

25. 发明授权

US5526377A Transversal filter useable in echo canceler, decision feedback equalizer applications for minimizing non-linear distortion in signals conveyed over full duplex two-wire communication link 失效
公开(公告)号：US5526377A
公开(公告)日：1996-06-11
申请号：US354366
申请日：1994-12-12
申请人： Harry Yedid , Richard A. Burch , Michael D. Turner , Kevin W. Schneider
发明人： Harry Yedid , Richard A. Burch , Michael D. Turner , Kevin W. Schneider
IPC分类号： H04B3/23 , H03H7/30 , H04B1/10
CPC分类号： H04B3/23
摘要： The need to employ costly precision components to reduce non-linearities in the signal processing path of noise reduction circuitry such as an echo canceler and decision feedback equalizer is successfully addressed by a transversal filter which is capable of effectively tracking for non-linearities in system components that manifest themselves as added noise introduced into the signal propagation path. This non-linear tracking capability is attained by employing cascaded sets of weighting coefficient and scaling factor multiplying stages. The first set of weighting coefficients effectively modifies the contents of each of the transmitted symbol samples in the transversal filter delay line to produce respective sets of `partial sums` associated with the respective data symbols employed in the data modulation scheme. The second, cascaded set of `scaling` coefficients or factors is employed to scale selected ones of the sets of the partial sums.

26. 发明授权

US5396517A Transversal filter useable in echo canceler, decision feedback equalizer applications for minimizing non-linear distortion in signals conveyed over full duplex two-wire communication link 失效
标题翻译：用于回波消除器的横向滤波器，决策反馈均衡器应用，用于最小化通过全双工双线通信链路传送的信号中的非线性失真
公开(公告)号：US5396517A
公开(公告)日：1995-03-07
申请号：US26491
申请日：1993-03-04
申请人： Harry Yedid , Richard A. Burch , Michael D. Turner , Kevin W. Schneider
发明人： Harry Yedid , Richard A. Burch , Michael D. Turner , Kevin W. Schneider
IPC分类号： H04B3/23 , H03H7/30
CPC分类号： H04B3/23
摘要： The need to employ costly precision components to reduce non-linearities in the signal processing path of noise reduction circuitry such as an echo canceler and decision feedback equalizer is successfully addressed by a transversal filter which is capable of effectively tracking for non-linearities in system components that manifest themselves as added noise introduced into the signal propagation path. This non-linear tracking capability is attained by employing cascaded sets of weighting coefficient and scaling factor multiplying stages. The first set of weighting coefficients effectively modifies the contents of each of the transmitted symbol samples in the transversal filter delay line to produce respective sets of `partial sums` associated with the respective data symbols employed in the data modulation scheme. The second, cascaded set of `scaling` coefficients or factors is employed to scale selected ones of the sets of the partial sums.
摘要翻译：需要采用昂贵的精密元件来减少诸如回波消除器和判决反馈均衡器之类的噪声降低电路的信号处理路径中的非线性，这是通过横向滤波器来解决的，该滤波器能够有效跟踪系统组件中的非线性这表现为引入信号传播路径的附加噪声。这种非线性跟踪能力通过采用级联的加权系数和比例因子乘法级来实现。第一组加权系数有效地修改横向滤波器延迟线中每个发射符号样本的内容，以产生与在数据调制方案中采用的相应数据符号相关联的各个“部分和”集合。使用第二级联的“缩放”系数或因子来缩放部分和的集合中的所选择的一组。

27. 发明授权

US07266092B2 Adaptive frequency duplexing system and method 有权
标题翻译：自适应频率双工系统及方法
公开(公告)号：US07266092B2
公开(公告)日：2007-09-04
申请号：US10354442
申请日：2003-01-30
申请人： Kevin W. Schneider , Arlynn W. Wilson
发明人： Kevin W. Schneider , Arlynn W. Wilson
IPC分类号： H04B7/00 , H04B3/20 , H04M9/08
CPC分类号： H04B1/56 , H04L5/143 , H04L5/1438 , H04L27/2608
摘要： A communication system and method adaptively control frequency ranges of a pair of interconnected transceivers in an effort to enhance the data rate in one direction. In this regard, a full duplex communication session is established between a first transceiver and a second transceiver. Signals having frequencies within an overlapping bandwidth are communicated between the first and second transceivers during a data phase. A transmission capacity of one of the transceivers is determined based on the communicated signals, and a comparison between this transmission capacity and a specified transmission capacity for the one transceiver is performed. A portion of the overlapping bandwidth is adaptively selected based on the comparison, and the one transceiver is prevented from transmitting signals having frequencies within the selected portion of the bandwidth during the data phase.
摘要翻译：通信系统和方法自适应地控制一对互连收发器的频率范围，以增强在一个方向上的数据速率。在这方面，在第一收发器和第二收发器之间建立全双工通信会话。具有重叠带宽内的频率的信号在数据阶段期间在第一和第二收发器之间通信。基于所传送的信号确定收发器之一的传输容量，并且执行该传输容量与一个收发器的指定传输容量之间的比较。基于比较自适应地选择重叠带宽的一部分，并且在数据阶段期间防止一个收发器发送具有在所选带宽部分内的频率的信号。

28. 发明授权

US06625116B1 System, methods and apparatus for increasing the data rate on an existing repeatered telecommunication channel structure 有权
标题翻译：用于增加现有重复的电信信道结构的数据速率的系统，方法和装置
公开(公告)号：US06625116B1
公开(公告)日：2003-09-23
申请号：US09306919
申请日：1999-05-07
申请人： Kevin W. Schneider , Fred T. Y. Chu
发明人： Kevin W. Schneider , Fred T. Y. Chu
IPC分类号： H04B336
CPC分类号： H04B3/36
摘要： A system, method, and apparatus for increasing the data rate on an existing repeatered telecommunication channel structure. In illustrative embodiments, replacement transceivers and replacement repeaters provide for transferring data streams via the existing channel structure at a rate substantially greater than the data transfer rate of the existing channel structure. The replacement transceivers and replacement repeaters are spectrally compatible with existing services and provide data transfer performance equal to or better than the performance of the existing channel structure.
摘要翻译：一种用于增加现有重复的电信信道结构上的数据速率的系统，方法和装置。在说明性实施例中，替换收发器和替换中继器提供经由现有信道结构以基本上大于现有信道结构的数据传输速率的速率传送数据流。替换收发器和替换中继器与现有业务频谱兼容，并提供等于或优于现有信道结构性能的数据传输性能。

29. 发明授权

US06393029B1 Use of modified line encoding and low signal-to-noise auto ratio based signal processing to extend range of digital data transmission over repeaterless two-wire telephone link 有权
标题翻译：使用经修改的线路编码和基于信噪比的低信号处理可以通过无中继的两线电话链路扩展数字数据传输的范围
公开(公告)号：US06393029B1
公开(公告)日：2002-05-21
申请号：US09438555
申请日：1999-11-10
申请人： Michael D. Turner , Kevin W. Schneider , Richard A. Burch , Richard L. Goodson
发明人： Michael D. Turner , Kevin W. Schneider , Richard A. Burch , Richard L. Goodson
IPC分类号： H04L1228
CPC分类号： H04L25/4917 , H04L25/03343 , H04L25/497 , H04L25/4975 , H04Q11/0435 , H04Q11/0471 , H04Q2213/1303 , H04Q2213/13034 , H04Q2213/13094 , H04Q2213/1319 , H04Q2213/13199 , H04Q2213/13209 , H04Q2213/13216 , H04Q2213/13322
摘要： The range of digital data communication services, such as a basic rate 2B1Q ISDN channel, to customer premises located beyond the industry standard achievable range of a two-wire loop can be extended by increasing the capacity of the ISDN line code from two information bits per symbol to three information bits per symbol, so as to reduce the effective symbol rate, which is error correction encoded to an effective 4B1H line code for defining a sixteen level PAM signal waveform, and employing enhanced low signal-to-noise ratio signal processing techniques in both the transmitter and receiver to accommodate the increased insertion loss of the two-wire line resulting from its extended length. Such enhanced low signal-to-noise ratio signal processing techniques include a Tomlinson precoder in the transmitter, and an adaptive linear equalizer and a module unit in the receiver.
摘要翻译：可以通过从两个信息比特来增加ISDN线路码的容量来扩展数字数据通信服务的范围，例如基本速率2B1Q ISDN信道到位于超出行业标准可实现的两线环路范围的客户驻地符号到每个符号三个信息位，以便减少有效符号率，其被纠错编码为有效的4B1H线路码，用于定义十六电平PAM信号波形，并采用增强的低信噪比信号处理技术在发射机和接收机中，以适应由于其延长的长度而导致的双线线路的增加的插入损耗。这种增强的低信噪比信号处理技术包括发射机中的Tomlinson预编码器，以及接收机中的自适应线性均衡器和模块单元。

30. 发明授权

US5943404A Mechanism for providing emergency POTS service in event of loss of power to customer premises equipment for ISDN telephone lines 失效
标题翻译：在ISDN电话线路的客户端设备丢失电力的情况下提供紧急POTS服务的机制
公开(公告)号：US5943404A
公开(公告)日：1999-08-24
申请号：US500189
申请日：1995-07-10
申请人： Michael Scott Sansom , Kevin W. Schneider
发明人： Michael Scott Sansom , Kevin W. Schneider
IPC分类号： H04Q11/04 , H04M11/00
CPC分类号： H04Q11/0471
摘要： In order to ensure continuous telephone service to a customer premises served by an ISDN line, without requiring that the customer maintain an additional POTS line as an emergency back-up to the normally used ISDN service, ISDN signalling circuits and network termination interface components are modified, so that, in the event of a loss of power to customer premises digital communications equipment, a communication link between an auxiliary POTS telephone and the normal ISDN communication path to the central office may be established. There need not be any modification of the central office switch, per se, so that the integrity of the ISDN communication path with the central office line card remains unaffected. As a result, the central office equipment can continue to conduct standard ISDN communications with the customer premises equipment, even though the customer is employing a POTS back-up analog phone.
摘要翻译：为了确保对由ISDN线路服务的客户端口的连续电话服务，不要求客户将额外的POTS线路作为通常使用的ISDN服务的紧急备援，ISDN信令电路和网络终端接口组件被修改，使得在客户数字通信设备的电力损失的情况下，可以建立辅助POTS电话与到中心局的正常ISDN通信路径之间的通信链路。本地不需要对中心局交换机进行任何修改，使得与中心局线路卡的ISDN通信路径的完整性不受影响。因此，即使客户正在使用POTS备用模拟电话，中心局设备也可以继续与客户端设备进行标准的ISDN通信。

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