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1. 发明授权

US08917986B2 Extended range for CWDM optical transport 有权
标题翻译： CWDM光传输的扩展范围
公开(公告)号：US08917986B2
公开(公告)日：2014-12-23
申请号：US11999761
申请日：2007-12-06
申请人： Venk Mutalik , Marcel F. Schemmann , Long Zou , Zhijian Sun
发明人： Venk Mutalik , Marcel F. Schemmann , Long Zou , Zhijian Sun
IPC分类号： H01S3/04 , H01S3/13 , H04B10/08 , H04B10/85 , H04B10/2537
CPC分类号： H04B10/85 , H04B10/2537
摘要： A optical transmission system includes light sources generating light of at least two wavelengths, where any two adjacent wavelengths are separated by less than 10 nm. The wavelengths fall within the zero dispersion zone of an optical fiber, and may be shifted by 1 nm or less to reduce crosstalk effects.
摘要翻译：光传输系统包括产生至少两个波长的光的光源，其中任何两个相邻波长被分开小于10nm。这些波长落在光纤的零色散区域内，并且可以偏移1nm或更小，以减少串扰效应。

2. 发明申请

US20130004173A1 OVERLAY SYSTEM WITH DIGITAL OPTICAL TRANSMITTER FOR DIGITIZED NARROWCAST SIGNALS 有权
标题翻译：带有数字光学发射器的数字化NARROWCAST信号覆盖系统
公开(公告)号：US20130004173A1
公开(公告)日：2013-01-03
申请号：US13175681
申请日：2011-07-01
申请人： Zoran Maricevic , Marcel F. Schemmann , Dean Painchaud , William P. Dawson , Zhijian Sun
发明人： Zoran Maricevic , Marcel F. Schemmann , Dean Painchaud , William P. Dawson , Zhijian Sun
IPC分类号： H04J14/00 , H04B10/06
CPC分类号： H04L27/34 , H04H20/69 , H04J14/0232 , H04J14/0246 , H04J14/0247 , H04J14/0282 , H04J14/0298
摘要： Methods and apparatuses are provided to modify existing overlay system architectures in a cost effective manner to meet the growing demand for narrowcast services and to position the existing overlay systems for additional future modifications. The implementations of the improved overlay system of this disclosure re-digitize narrowcast analog signals after they have been QAM modulated and upconverted to RF frequencies and replace the analog narrowcast transmitters with digital narrowcast transmitters. In the fiber nodes, the received narrowcast signals are converted back to analog signals and combined with analog broadcast signals for transmission to the service groups.
摘要翻译：提供了方法和装置以便以成本有效的方式修改现有的覆盖系统架构，以满足对窄幅服务的日益增长的需求，并且将现有覆盖系统定位以用于未来的进一步修改。本公开的改进的覆盖系统的实施方式在将窄带模拟信号QAM调制并上变频到RF频率之后重新数字化窄模拟信号，并用数字窄幅发射机替代模拟窄播发射机。在光纤节点中，接收到的窄信号被转换回模拟信号，并与模拟广播信号组合，以传输到服务组。

3. 发明申请

US20090263141A1 DUAL USE OF TEST POINT POWER MONITOR 有权
标题翻译：测试点电力监控器的双重使用
公开(公告)号：US20090263141A1
公开(公告)日：2009-10-22
申请号：US12406107
申请日：2009-03-17
申请人： Zoran Maricevic , Eric Cormier , Benedict J. Jackson , Jayesh Bhatt , Marcel F. Schemmann , Zhijian Sun
发明人： Zoran Maricevic , Eric Cormier , Benedict J. Jackson , Jayesh Bhatt , Marcel F. Schemmann , Zhijian Sun
IPC分类号： H04B10/00 , H04L27/20
CPC分类号： H03M1/0614 , H03M1/66
摘要： A channel alignment system in an optical communication network includes logic to sample power of a quadrature amplitude modulation (QAM) channel at a component downstream from a QAM modulator. The system determines if the sampled channel power has a sufficient level. The system signals power control logic of the QAM modulator to adjust a gain of the sampled channel.
摘要翻译：光通信网络中的信道对准系统包括在QAM调制器下游的分量处采样正交幅度调制（QAM）信道的功率的逻辑。系统确定采样信道功率是否具有足够的电平。该系统通过QAM调制器的功率控制逻辑来调整采样通道的增益。

4. 发明授权

US09923751B2 Overlay system with digital optical transmitter for digitized narrowcast signals 有权
公开(公告)号：US09923751B2
公开(公告)日：2018-03-20
申请号：US13175681
申请日：2011-07-01
申请人： Zoran Maricevic , Marcel F. Schemmann , Dean Painchaud , William P. Dawson , Zhijian Sun
发明人： Zoran Maricevic , Marcel F. Schemmann , Dean Painchaud , William P. Dawson , Zhijian Sun
IPC分类号： H04B14/00 , H04L27/34 , H04J14/02 , H04H20/69
CPC分类号： H04L27/34 , H04H20/69 , H04J14/0232 , H04J14/0246 , H04J14/0247 , H04J14/0282 , H04J14/0298
摘要： Methods and apparatuses are provided to modify existing overlay system architectures in a cost effective manner to meet the growing demand for narrowcast services and to position the existing overlay systems for additional future modifications. The implementations of the improved overlay system of this disclosure re-digitize narrowcast analog signals after they have been QAM modulated and upconverted to RF frequencies and replace the analog narrowcast transmitters with digital narrowcast transmitters. In the fiber nodes, the received narrowcast signals are converted back to analog signals and combined with analog broadcast signals for transmission to the service groups.

5. 发明申请

US20120213515A1 SERVICE GROUP AGGREGATION 审中-公开
标题翻译：服务集团聚集
公开(公告)号：US20120213515A1
公开(公告)日：2012-08-23
申请号：US13030573
申请日：2011-02-18
申请人： Zoran Maricevic , Marcel F. Schemmann , Zhijian Sun , Dean Painchaud , Jeffrey L. Sauter , William P. Dawson
发明人： Zoran Maricevic , Marcel F. Schemmann , Zhijian Sun , Dean Painchaud , Jeffrey L. Sauter , William P. Dawson
IPC分类号： H04J14/00
CPC分类号： H04Q11/0067 , H04Q11/0071
摘要： Methods and systems for aggregating service groups are provided. A chain of fiber nodes in a DOCSIS system is formed to aggregate the service groups served by the fiber nodes to form a super-service group. Multiple channels of a multiplexed data stream are used to transmit the signals from the super-service group. By creating a chain of fiber nodes and using multiple channels to transmit the signals from the super-service group, a DOCSIS system can be more efficiently reconfigured to segment a super-service group once the system has become exhausted.
摘要翻译：提供了聚合服务组的方法和系统。形成DOCSIS系统中的光纤节点链，以聚合由光纤节点服务的服务组，以形成超服务组。使用复用数据流的多个信道来传输来自超级服务组的信号。通过创建光纤节点链并使用多个信道来传输来自超级服务组的信号，一旦系统耗尽，可以更有效地重新配置DOCSIS系统以分段超级服务组。

6. 发明授权

US06690235B2 Distortion generation in balanced and unbalanced signals 失效
标题翻译：平衡和不平衡信号中的失真产生
公开(公告)号：US06690235B2
公开(公告)日：2004-02-10
申请号：US09896198
申请日：2001-06-29
申请人： Marcel F. C. Schemmann , Zhijian Sun
发明人： Marcel F. C. Schemmann , Zhijian Sun
IPC分类号： H03F126
CPC分类号： H03F1/3276
摘要： A method and structure for generation of signal distortion. In a first embodiment, a first signal distortion generator (SDG) receives a pair of balanced input currents +X and −X, each having a same angular frequency &ohgr;. The first SDG generates a pair of output currents +X+&Dgr;X1 and −X+&Dgr;X2, wherein &Dgr;X1−&Dgr;X2=G2X2+G3X3. G2 and G3 are each independent of X, and at least one of G2 and G3 is nonzero. In a second embodiment, a second SDG receives an unbalanced input current P having an angular frequency &ohgr;. The second SDG generates an output current UOUT of a form P+(&agr;P+&bgr;P2+&ggr;P3)/2. &agr;, &bgr;, and &ggr; are each nonzero and each independent of P. The second SDG includes a distortion generating circuit path that has an input impedance ratio of at least 5 and an output impedance ratio of at least 5.
摘要翻译：用于产生信号失真的方法和结构。在第一实施例中，第一信号失真发生器（SDG）接收一对平衡的输入电流+ X和-X，每一个具有相同的角频率ω。第一SDG产生一对输出电流+ X +ΔX1和-X +ΔX2，其中DeltaX1-ΔX2= G2X2 + G3X3。 G2和G3各自独立于X，并且G2和G3中的至少一个不为零。在第二实施例中，第二SDG接收具有角频率ω的不平衡输入电流P. 第二SDG产生形式为P +（αP+βP2 +γP3）/ 2的输出电流UOUT。 α，β和γ各自是非零的，并且每个独立于P.第二SDG包括具有至少5的输入阻抗比和至少5的输出阻抗比的失真产生电路路径。

7. 发明授权

US06593811B2 Nonlinear feedback linearizer 失效
标题翻译：非线性反馈线性化
公开(公告)号：US06593811B2
公开(公告)日：2003-07-15
申请号：US09892974
申请日：2001-06-27
申请人： Marcel F. C. Schemmann , Zhijian Sun
发明人： Marcel F. C. Schemmann , Zhijian Sun
IPC分类号： H03F136
CPC分类号： H03F1/34
摘要： The present invention relates generally to an amplifier such as that with the radio frequency (RF) spectrum having a nonlinear feedback loop to cancel out distortions in the input signal, and method therefor.
摘要翻译：本发明一般涉及一种放大器，例如射频（RF）频谱具有非线性反馈回路以消除输入信号中的失真的放大器及其方法。

8. 发明授权

US09014576B2 Automatic dual receiver in a multi-wavelength fiber optic system 有权
公开(公告)号：US09014576B2
公开(公告)日：2015-04-21
申请号：US11897246
申请日：2007-08-28
申请人： Marcel F. Schemmann , Venk Mutalik , Long Zou , Zhijian Sun
发明人： Marcel F. Schemmann , Venk Mutalik , Long Zou , Zhijian Sun
IPC分类号： H04B10/69 , H04B10/67
CPC分类号： H04B10/675
摘要： An optical-to-electrical converter may include and/or involve a splitter to separate one or more narrowcast signals from a broadcast signal, at least one broadcast signal receiver to receive the broadcast signal separated from one or more narrowcast signals, at least one narrowcast signal receiver to receive the narrowcast signal separated from the broadcast signal, the narrowcast receiver including an attenuator and a filter, and a controller including logic to dynamically monitor and adjust the attenuator to maintain separation between the broadcast and narrowcast signals.

9. 发明授权

US08670668B2 Digitizer for use in an overlay system with digital optical transmitter for digitized narrowcast signals 有权
标题翻译：数字化仪用于具有用于数字化窄信号的数字光发射机的覆盖系统
公开(公告)号：US08670668B2
公开(公告)日：2014-03-11
申请号：US13235661
申请日：2011-09-19
申请人： Zoran Marlcevic , Zhijian Sun , Marcel F. Schemmann , Dean Painchaud
发明人： Zoran Marlcevic , Zhijian Sun , Marcel F. Schemmann , Dean Painchaud
IPC分类号： H04J4/00 , H04B10/00 , H04J14/02
CPC分类号： H04B10/25759 , H04H20/69 , H04J14/0232 , H04J14/0246 , H04J14/0282 , H04J14/0298
摘要： Methods and apparatuses are provided to digitize an analog multi-channel RF narrowcast signal in an overlay system by dividing the signal into a plurality of subband signals and digitizing each subband signal using practical A/D converters.
摘要翻译：提供了通过将信号划分为多个子带信号并使用实际的A / D转换器对每个子带信号进行数字化来在覆盖系统中数字化模拟多信道RF窄信号的方法和装置。

10. 发明授权

US08145068B2 Dual use of test point power monitor 有权
标题翻译：双重使用测试点功率监视器
公开(公告)号：US08145068B2
公开(公告)日：2012-03-27
申请号：US12406107
申请日：2009-03-17
申请人： Zoran Maricevic , Eric Cormier , Benedict J. Jackson , Jayesh Bhatt , Marcel F Schemmann , Zhijian Sun
发明人： Zoran Maricevic , Eric Cormier , Benedict J. Jackson , Jayesh Bhatt , Marcel F Schemmann , Zhijian Sun
IPC分类号： H04B10/04
CPC分类号： H03M1/0614 , H03M1/66
摘要： A channel alignment system in an optical communication network includes logic to sample power of a quadrature amplitude modulation (QAM) channel at a component downstream from a QAM modulator. The system determines if the sampled channel power has a sufficient level. The system signals power control logic of the QAM modulator to adjust a gain of the sampled channel.
摘要翻译：光通信网络中的信道对准系统包括在QAM调制器下游的分量处采样正交幅度调制（QAM）信道的功率的逻辑。系统确定采样信道功率是否具有足够的电平。该系统通过QAM调制器的功率控制逻辑来调整采样通道的增益。

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