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11. 发明申请

US20090226172A1 RECONFIGURABLE OPTICAL ADD/DROP MULTIPLEXER AND PROCEDURE FOR OUTPUTTING OPTICAL SIGNALS FROM SUCH MULTIPLEXER 有权
标题翻译：可重新配置的光学增益/多路复用器和从这种多路复用器输出光信号的步骤
公开(公告)号：US20090226172A1
公开(公告)日：2009-09-10
申请号：US12044322
申请日：2008-03-07
申请人： Julia Y. Larikova , Richard C. Younce , Mark E. Boduch
发明人： Julia Y. Larikova , Richard C. Younce , Mark E. Boduch
IPC分类号： H04J14/02
CPC分类号： H04J14/0213 , H04J14/0205 , H04J14/0206 , H04J14/0209 , H04J14/0212 , H04J14/0217 , H04J14/0219 , H04J14/0221
摘要： A reconfigurable optical add drop multiplexer (ROADM) includes local interfaces at which optical signals of different wavelengths are locally input into the ROADM, and a network interface configured to connect the ROADM to a network from which multiplexed optical signals of different wavelengths are transmitted to the network. In a first configuration, the ROADM is configured to transmit from the network interface to the network multiplexed signals of different wavelengths having a first minimum frequency difference. In a second configuration, the ROADM is configured to transmit from the network interface to the network multiplexed signals of different wavelengths having a second minimum frequency difference. The second minimum frequency difference is greater than the first minimum frequency difference. This arrangement reduces the power of four wave mixing cross products produced when optical signals of three wavelengths are multiplexed and transmitted from the ROADM to NZDSF or DSF fiber types.
摘要翻译：可重构光分插复用器（ROADM）包括本地接口，不同波长的光信号被本地输入到ROADM中，以及网络接口，被配置为将ROADM连接到网络，从该网络将不同波长的复用光信号传输到网络。在第一配置中，ROADM被配置为从网络接口向具有第一最小频率差的不同波长的网络复用信号进行发送。在第二配置中，ROADM被配置为从网络接口向具有第二最小频率差的不同波长的网络复用信号进行发送。第二最小频率差大于第一最小频率差。这种布置降低了由三路波长的光信号从ROADM复用到NZDSF或DSF光纤类型时产生的四个波混合交叉产品的功率。

12. 发明申请

US20080144487A1 OFDM/DMT/digital communications system including partial sequence symbol processing 有权
标题翻译： OFDM / DMT /数字通信系统，包括部分序列符号处理
公开(公告)号：US20080144487A1
公开(公告)日：2008-06-19
申请号：US11982449
申请日：2007-10-31
申请人： Daniel J. Marchok , Richard C. Younce , Peter J. W. Melsa
发明人： Daniel J. Marchok , Richard C. Younce , Peter J. W. Melsa
IPC分类号： H04J11/00
CPC分类号： H04L27/2662 , H04L5/023 , H04L5/1453 , H04L27/20 , H04L27/2602 , H04L27/2628 , H04L27/2647 , H04L27/2657
摘要： A method of managing a signal over a symbol period includes supplying samples of the signal at beginning and end portions of the symbol period. The method further includes suppressing the supply of samples of the signal at a middle portion of the symbol period.
摘要翻译：一种在符号周期上管理信号的方法包括在符号周期的开始和结束部分提供信号的样本。该方法还包括抑制在符号周期的中间部分处提供信号的样本。

13. 发明授权

US06285654B1 Apparatus and method for symbol alignment in a multi-point OFDM or DMT digital communications system 失效
标题翻译：在多点OFDM或DMT数字通信系统中的符号对准的装置和方法
公开(公告)号：US06285654B1
公开(公告)日：2001-09-04
申请号：US08845544
申请日：1997-04-24
申请人： Daniel J. Marchok , Richard C. Younce , Samir Kapoor , Peter J. W. Melsa
发明人： Daniel J. Marchok , Richard C. Younce , Samir Kapoor , Peter J. W. Melsa
IPC分类号： H04J1100
CPC分类号： H04L5/1453 , H04L5/023 , H04L27/2605 , H04L27/2657 , H04L27/2662 , H04L27/2678
摘要： A multi-point communications system that comprises a head end unit disposed at a primary site and a plurality of receivers disposed at remote sites. The head end unit includes a transmitter for transmitting OFDM/DMT symbols over a predetermined number of bins across a transmission medium. The OFDM/DMT symbols are transmitted in periodically occurring formatted symbol frames. The cyclic prefix includes a predetermined periodic signal superimposed thereon. The receivers receive the OFDM/DMT symbols over a subset of the predetermined number of bins from the transmission medium and use the superimposed signals to attain symbol alignment. In accordance with a further aspect of the present invention, the receivers apply a predetermined incremental phase shift to received samples corresponding to the received OFDM/DMT symbols to thereby compensate for phase shifts. The multi-point communications system may include a similar system for aligning symbols transmissions from a remote service unit having a transmitter. Such a system includes a plurality of remote service units each including a transmitter for transmitting OFDM/DMT symbols over a predetermined number of bins across a transmission medium. Each of the plurality of remote service units is operable in a symbol alignment mode in which the transmitter transmits a broad band periodic signal. The head end unit includes a receiver for receiving the OFDM/DMT symbols, including the broad band periodic signal, from the transmission medium. The head end unit uses the time position of the broad band periodic signal to align the symbol transmissions of the remote service unit.
摘要翻译：一种多点通信系统，包括设置在主站点处的头端单元和设置在远程站点的多个接收器。头端单元包括用于通过传输介质在预定数量的箱上发送OFDM / DMT符号的发射机。 OFDM / DMT符号以周期性出现的格式化符号帧发送。循环前缀包括叠加在其上的预定周期信号。接收机在来自传输介质的预定数量的分组的子集上接收OFDM / DMT符号，并使用叠加的信号来获得符号对准。根据本发明的另一方面，接收机对与所接收的OFDM / DMT符号相对应的接收样本应用预定的增量相移，从而补偿相移。多点通信系统可以包括用于对准具有发射机的远程服务单元的符号传输的类似系统。这样的系统包括多个远程服务单元，每个远程服务单元包括用于通过传输介质在预定数量的箱上发送OFDM / DMT符号的发射机。多个远程服务单元中的每一个可以在发射器发射宽带周期信号的符号对准模式中操作。头端单元包括用于从传输介质接收包括宽带周期信号的OFDM / DMT符号的接收器。头端单元使用宽带周期信号的时间位置来对准远程服务单元的符号传输。

14. 发明授权

US6118758A Multi-point OFDM/DMT digital communications system including remote service unit with improved transmitter architecture 失效
标题翻译：多点OFDM / DMT数字通信系统，包括具有改进发射机架构的远程业务单元
公开(公告)号：US6118758A
公开(公告)日：2000-09-12
申请号：US772321
申请日：1996-12-23
申请人： Daniel J. Marchok , Richard C. Younce , Peter J. W. Melsa
发明人： Daniel J. Marchok , Richard C. Younce , Peter J. W. Melsa
IPC分类号： H04B1/66 , H04B7/10 , H04J1/00 , H04J11/00 , H04L5/02 , H04L5/14 , H04L27/26
CPC分类号： H04L27/2662 , H04L27/20 , H04L27/2602 , H04L27/2628 , H04L27/2647 , H04L5/023 , H04L5/1453 , H04L27/2657
摘要： A multi-point communications system is set forth herein. The communications system includes a receiver and transmitter disposed at a primary site for communication with a plurality of remote service units disposed at respective secondary sites. The receiver of the primary site receives OFDM/DMT signals over a number of transmission bins. A transmitter at the remote service unit includes an improved transmitter architecture. The transmitter comprises a first circuit for converting a signal into a first serial digital data stream and a second circuit for generating a second serial digital data stream from the first serial digital data stream of the first means. The second serial digital data stream is a digital representation of an OFDM/DMT signal that is to be transmitted to the receiver of the primary site and is generated from the first serial digital data stream through a modulated direct digital synthesis thereof. A third circuit is used to convert the second serial digital data stream into an analog OFDM/DMT signal for transmission to the receiver of the primary site.
摘要翻译：本文阐述了一种多点通信系统。通信系统包括设置在主站点处的接收机和发射机，用于与设置在相应次要站点处的多个远程服务单元进行通信。主站点的接收机通过多个传输箱接收OFDM / DMT信号。远程服务单元的发射机包括改进的发射机架构。发射机包括用于将信号转换成第一串行数字数据流的第一电路和用于从第一装置的第一串行数字数据流产生第二串行数字数据流的第二电路。第二串行数字数据流是OFDM / DMT信号的数字表示，其将被发送到主站点的接收机并且通过其调制的直接数字合成从第一串行数字数据流生成。第三电路用于将第二串行数字数据流转换为模拟OFDM / DMT信号，以传输到主站点的接收机。

15. 发明授权

US4772884A Independent sustain and address plasma display panel 失效
标题翻译：独立维持和地址等离子体显示面板
公开(公告)号：US4772884A
公开(公告)日：1988-09-20
申请号：US787541
申请日：1985-10-15
申请人： Larry F. Weber , Richard C. Younce
发明人： Larry F. Weber , Richard C. Younce
IPC分类号： G09G3/28 , G09G3/288
CPC分类号： G09G3/293 , G09G3/2922 , G09G2320/0228 , G09G3/297
摘要： An AC gas discharge display panel is described which employs the phenomenon of plasma spreading. In the panel, plasma spreading or "coupling" is employed to couple the plasma to an addressed cell to one of a plurality of pixels to be illuminated. The spreading is controlled by assuring that the cell wall voltages are properly related so that the plasma's electrons migrate to a region where the voltages are approximately equal to or more positive than the wall voltages where the plasma originated. Paired sustain electrodes are selectively energized to enable diversion of the coupled plasma to the desired pixel, so that upon subsequent applications of a sustain voltage, the desired pixel is illuminated (or erased) as the case may be.
摘要翻译：描述了采用等离子体扩散现象的AC气体放电显示面板。在面板中，采用等离子体扩展或“耦合”将等离子体耦合到寻址的单元到待照明的多个像素中的一个。通过确保电池壁电压适当地相关，使得等离子体的电子迁移到电压近似等于或大于等离子体产生的壁电压的正值的区域来控制扩展。配对的维持电极被选择性地通电以使得耦合的等离子体能够转移到期望的像素，使得在随后施加维持电压时，根据情况可以照亮（或擦除）期望的像素。

16. 发明授权

US07898935B2 OFDM/DMT/digital communications system including partial sequence symbol processing 有权
标题翻译： OFDM / DMT /数字通信系统，包括部分序列符号处理
公开(公告)号：US07898935B2
公开(公告)日：2011-03-01
申请号：US11982449
申请日：2007-10-31
申请人： Daniel J. Marchok , Richard C. Younce , Peter J. W. Melsa
发明人： Daniel J. Marchok , Richard C. Younce , Peter J. W. Melsa
IPC分类号： H04L5/04
CPC分类号： H04L27/2662 , H04L5/023 , H04L5/1453 , H04L27/20 , H04L27/2602 , H04L27/2628 , H04L27/2647 , H04L27/2657
摘要： A method of managing a signal over a symbol period includes supplying samples of the signal at beginning and end portions of the symbol period. The method further includes suppressing the supply of samples of the signal at a middle portion of the symbol period.
摘要翻译：一种在符号周期上管理信号的方法包括在符号周期的开始和结束部分提供信号的样本。该方法还包括抑制在符号周期的中间部分处提供信号的样本。

17. 发明申请

US20090028354A1 Echo Canceller Employing Dual-H Architecture Having Split Adaptive Gain Settings 审中-公开
标题翻译：采用双H架构的回波消除器分解自适应增益设置
公开(公告)号：US20090028354A1
公开(公告)日：2009-01-29
申请号：US12145246
申请日：2008-06-24
申请人： Richard C. Younce , Kenneth P. Laberteaux
发明人： Richard C. Younce , Kenneth P. Laberteaux
IPC分类号： H04B3/20
CPC分类号： H04M9/082
摘要： An echo canceller circuit is set forth. The echo canceller circuit includes a digital filter having adaptive tap coefficients to simulate an echo response occurring during a call. The adaptive tap coefficients are updated during the call using a Means Squares process. A tap energy detector is also employed. The tap energy detector identifies and divides groups of taps having high energy from groups of taps having low energy. The high energy tap groups are smaller in number than the low energy tap groups. The high energy tap groups are adapted separately from the low energy tap groups using the Least Squares process. Still further, the high energy tap groups may be adapted using an adaptive gain constant a while the low energy tap groups are adapted using an adaptive gain constant a′, wherein a>a′.
摘要翻译：提出了回声消除电路。回波消除器电路包括具有自适应抽头系数的数字滤波器，以模拟在呼叫期间发生的回波响应。在使用均值平方法的呼叫期间，自适应抽头系数被更新。也采用水龙头能量检测器。抽头能量检测器从具有低能量的抽头组识别并分割具有高能量的抽头组。高能量抽头组的数量比低能量抽头组小。使用最小二乘法，高能量抽头组与低能量抽头组分开调整。此外，可以使用自适应增益常数a适配高能量抽头组，同时使用自适应增益常数a'适配低能量抽头组，其中a> a'。

18. 发明授权

US07412125B2 Optical dispersion compensation 失效
标题翻译：光分散补偿
公开(公告)号：US07412125B2
公开(公告)日：2008-08-12
申请号：US11281931
申请日：2005-11-16
申请人： Kimon Papakos , Kenneth M. Fisher , Richard C. Younce
发明人： Kimon Papakos , Kenneth M. Fisher , Richard C. Younce
IPC分类号： G02B6/28
CPC分类号： H04B10/25133
摘要： A method of providing dispersion compensation includes providing a dispersion signal indicative of an amount of dispersion for at least one channel of a multi-channel optical signal. A dispersion compensator is controlled in accordance with the dispersion signal to optically compensate for the dispersion of the optical signal.
摘要翻译：提供色散补偿的方法包括提供指示多通道光信号的至少一个通道的色散量的色散信号。色散补偿器根据色散信号进行控制，以光学补偿光信号的色散。

19. 发明授权

US07200222B2 Echo canceller employing dual-H architecture having variable adaptive gain settings 有权
标题翻译：采用具有可变自适应增益设置的双H架构的回波消除器
公开(公告)号：US07200222B2
公开(公告)日：2007-04-03
申请号：US10602949
申请日：2003-06-23
申请人： Kenneth P. Laberteaux , Richard C. Younce , Bruce E. Dunne , David S. Farrell
发明人： Kenneth P. Laberteaux , Richard C. Younce , Bruce E. Dunne , David S. Farrell
IPC分类号： H04M1/00
CPC分类号： H04M9/082 , H04B3/23
摘要： An echo canceller circuit for use in an echo canceller system is set forth that provides sensitive double-talk detection. The echo canceller circuit comprises a second digital filter having adaptive tap coefficients to simulate an echo response occurring during the call. The adaptive tap coefficients of the second digital filter are updated over the duration of the call using a Least Mean Squares process having an adaptive gain a. A channel condition detector is used to detect channel conditions during the call. The channel condition detector is responsive to detected channel conditions for changing the adaptive gain a during the call. For example, the channel condition detector may detect the presence of a double-talk condition and set the adaptive gain a to zero. Similarly, the channel condition detector may detect the occurrence of a high background noise condition and set the adaptive gain a to a level less than 1 that is dependent on the detected level of the background noise. Other similar channel conditions and corresponding adaptive gain settings may likewise be utilized.
摘要翻译：提出了一种用于回波消除器系统中的回波消除电路，其提供灵敏的双向通话检测。回波消除器电路包括具有自适应抽头系数的第二数字滤波器来模拟在呼叫期间发生的回波响应。使用具有自适应增益a的最小均方方法，在呼叫的持续时间内更新第二数字滤波器的自适应抽头系数。信道条件检测器用于检测呼叫期间的信道状况。信道条件检测器响应于检测到的信道条件，用于在呼叫期间改变自适应增益a。例如，信道条件检测器可以检测双方通话状况的存在并将自适应增益a设置为零。类似地，信道条件检测器可以检测高背景噪声条件的发生，并将自适应增益a设置为取决于检测到的背景噪声电平的小于1的电平。同样可以利用其他类似的信道条件和相应的自适应增益设置。

20. 发明授权

US06950388B2 Apparatus and method for symbol alignment in a multi-point OFDM/DMT digital communications system 有权
标题翻译：在多点OFDM / DMT数字通信系统中的符号对准的装置和方法
公开(公告)号：US06950388B2
公开(公告)日：2005-09-27
申请号：US09912990
申请日：2001-07-25
申请人： Daniel J. Marchok , Richard C. Younce , Samir Kapoor , Peter J.W. Melsa
发明人： Daniel J. Marchok , Richard C. Younce , Samir Kapoor , Peter J.W. Melsa
IPC分类号： H04L5/02 , H04L5/14 , H04L27/26 , H04J11/00 , H04J3/06
CPC分类号： H04L27/2657 , H04L5/023 , H04L5/1453 , H04L27/2602 , H04L27/2662
摘要： A multi-point communication system that comprises a head end unit disposed at a primary site and a plurality of receivers disposed at remote sites. The head end unit includes a transmitter for transmitting OFDM/DMT symbols over a predetermined number of bins across a transmission medium. The OFDM/DMT symbols are transmitted in periodically occurring formatted symbol frames. The cyclic prefix includes a predetermined periodic signal superimposed thereon. The receivers receive the OFDM/DMT symbols over a subset of the predetermined number of bins from the transmission medium and use the superimposed signals to attain symbol alignment. In accordance with a further aspect of the present invention, the receivers apply a predetermined incremental phase shift to received samples corresponding to the received OFDM/DMT symbols to thereby compensate for phase shifts.
摘要翻译：一种多点通信系统，包括设置在主站点的头端单元和设置在远程站点的多个接收器。头端单元包括用于通过传输介质在预定数量的箱上发送OFDM / DMT符号的发射机。 OFDM / DMT符号以周期性出现的格式化符号帧发送。循环前缀包括叠加在其上的预定周期信号。接收机在来自传输介质的预定数量的分组的子集上接收OFDM / DMT符号，并使用叠加的信号来获得符号对准。根据本发明的另一方面，接收机对与所接收的OFDM / DMT符号相对应的接收样本应用预定的增量相移，从而补偿相移。

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