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1. 发明申请

WO2004075469A2 JOINT, ADAPTIVE CONTROL OF EQUALIZATION, SYNCHRONIZATION, AND GAIN IN A DIGITAL COMMUNICATIONS RECEIVER 审中-公开
标题翻译：数字通信接收机中均衡，同步和增益的联合自适应控制
公开(公告)号：WO2004075469A2
公开(公告)日：2004-09-02
申请号：PCT/US2004/004887
申请日：2004-02-19
申请人： DOTCAST INC. , ENDRES, Thomas, J. , LONG, Christopher, D. , FAGAN, Rory , CHUNG, Wonzoo
发明人： ENDRES, Thomas, J. , LONG, Christopher, D. , FAGAN, Rory , CHUNG, Wonzoo
IPC分类号： H04L
CPC分类号： H04L25/03057 , H03G3/3052 , H03G3/3089 , H03L7/091 , H03L2207/50 , H04L7/0029 , H04L7/0062 , H04L7/0079 , H04L7/0278 , H04L27/3809 , H04L2027/0032 , H04L2027/0036 , H04L2027/0038 , H04L2027/0053 , H04L2027/0055 , H04L2027/0065 , H04L2027/0067 , H04L2027/0069
摘要： Various aspects and embodiments of the present invention derive statistics of received signal quality and use these statistics to jointly control operation of timing recovery, carrier recovery, automatic gain control, and equalization functions.
摘要翻译：本发明的各个方面和实施例导出接收信号质量的统计并使用这些统计来共同控制定时恢复，载波恢复，自动增益控制和均衡功能的操作。

2. 发明申请

WO2004059932A3 OPTIMIZATION OF SOFT DECISION DEVICE AND FEEDBACK EQUALIZER 审中-公开
公开(公告)号：WO2004059932A3
公开(公告)日：2004-07-15
申请号：PCT/US2003/040672
申请日：2003-12-18
申请人： DOTCAST, INC. , CHUNG, Wonzoo , ENDRES, Thomas, J. , LONG, Christopher, D.
发明人： CHUNG, Wonzoo , ENDRES, Thomas, J. , LONG, Christopher, D.
IPC分类号： H04L25/03
摘要： The present invention uses a novel adaptive soft decision device in order to jointly optimize decision device and DFE operation. The soft decision device receives the input and output samples of the slicer and generates a feedback sample by non-linearly combining them with respect to a single decision reference parameter. Moreover, the soft decision device provides novel error terms used to adapt equalizer coefficients in order to jointly optimize decision device and equalizer coefficients.

3. 发明申请

WO2004059932A2 JOINT ADAPTIVE OPTIMIZATION OF SOFT DECISION DEVICE AND FEEDBACK EQUALIZER 审中-公开
标题翻译：软决策设备和反馈均衡器的联合自适应优化
公开(公告)号：WO2004059932A2
公开(公告)日：2004-07-15
申请号：PCT/US0340672
申请日：2003-12-18
申请人： DOTCAST INC , CHUNG WONZOO , ENDRES THOMAS J , LONG CHRISTOPHER D
发明人： CHUNG WONZOO , ENDRES THOMAS J , LONG CHRISTOPHER D
IPC分类号： H03G3/30 , H04L25/03 , H04L25/06 , H04L27/00 , H04N7/08
CPC分类号： H03G3/3052 , H03G3/3089 , H04L25/03057 , H04L25/067 , H04L2025/03388 , H04L2025/0342 , H04L2025/0349 , H04L2025/03617 , H04L2025/0363 , H04L2027/003 , H04L2027/0055 , H04N7/08
摘要： The present invention uses a novel adaptive soft decision device in order to jointly optimize decision device and DFE operation. The soft decision device receives the input and output samples of the slicer and generates a feedback sample by non-linearly combining them with respect to a single decision reference parameter. Moreover, the soft decision device provides novel error terms used to adapt equalizer coefficients in order to jointly optimize decision device and equalizer coefficients.
摘要翻译：本发明采用新颖的自适应软判决装置，以便共同优化决策装置和DFE操作。软判决装置接收限幅器的输入和输出采样，并通过相对于单个判定参考参数非线性组合来产生反馈样本。此外，软判决装置提供用于适应均衡器系数的新颖的误差项，以共同优化决策装置和均衡器系数。

4. 发明申请

WO2005104550A3 DATA INSERTION TECHNIQUES FOR EXPANDING INFORMATION CAPACITY OF EXISTING COMMUNICATION SYSTEMS 审中-公开
标题翻译：数据插入技术，用于扩展现有通信系统的信息容量
公开(公告)号：WO2005104550A3
公开(公告)日：2006-01-12
申请号：PCT/US2005012856
申请日：2005-04-15
申请人： DOTCAST INC , CHUNG WONZOO , LONG CHRISTOPHER , ENDRES THOMAS
发明人： CHUNG WONZOO , LONG CHRISTOPHER , ENDRES THOMAS
IPC分类号： H04N7/08
CPC分类号： H04N7/08
摘要： Methods and apparatus are described for inserting data in a communications system, such as in an existing analog communications system, using quadrature amplitude modulation (QAM) with in-phase analog signals and quadrature data signals. These methods can minimize the distortion to the analog signals while maximizing the data signal strength. The data signals may be sub-modulated on a subcarrier frequency (201) such that the data signals do not interfere with the analog signal detectors in the analog signal receivers, and may be processed with an abatement filter (202) to mitigate the distortion due to Nyquist mismatch in the receiver. The injection phase of data signals may be determined (206) by adaptive algorithms, using a monitor analog signal receiver (103).
摘要翻译：描述了使用具有同相模拟信号和正交数据信号的正交幅度调制（QAM）在诸如现有模拟通信系统的通信系统中插入数据的方法和装置。这些方法可以最大限度地减少模拟信号的失真，同时最大化数据信号强度。数据信号可以在子载波频率（201）上进行子调制，使得数据信号不干扰模拟信号接收机中的模拟信号检测器，并且可以用减弱滤波器（202）来处理，以减轻由于到接收器中的奈奎斯特不匹配。数据信号的注入阶段可以通过使用监视器模拟信号接收器（103）的自适应算法来确定（206）。

5. 发明申请

WO2005104550A2 DATA INSERTION TECHNIQUES FOR EXPANDING INFORMATION CAPACITY OF EXISTING COMMUNICATION SYSTEMS 审中-公开
标题翻译：数据插入技术，用于扩展现有通信系统的信息容量
公开(公告)号：WO2005104550A2
公开(公告)日：2005-11-03
申请号：PCT/US2005/012856
申请日：2005-04-15
申请人： DOTCAST, INC. , CHUNG, Wonzoo , LONG, Christopher , ENDRES, Thomas
发明人： CHUNG, Wonzoo , LONG, Christopher , ENDRES, Thomas
IPC分类号： H04N7/08
CPC分类号： H04N7/08
摘要： Methods and apparatus are described for inserting data in a communications system, such as in an existing analog communications system, using quadrature amplitude modulation (QAM) with in-phase analog signals and quadrature data signals. These methods can minimize the distortion to the analog signals while maximizing the data signal strength. The data signals may be sub-modulated on a subcarrier frequency such that the data signals do not interfere with the analog signal detectors in the analog signal receivers, and may be processed with an abatement filter to mitigate the distortion due to Nyquist mismatch in the receiver. The injection phase of data signals may be determined by adaptive algorithms, using a monitor analog signal receiver.
摘要翻译：描述了使用具有同相模拟信号和正交数据信号的正交幅度调制（QAM）在诸如现有模拟通信系统的通信系统中插入数据的方法和装置。这些方法可以最大限度地减少模拟信号的失真，同时最大化数据信号强度。数据信号可以在子载波频率上进行子调制，使得数据信号不干扰模拟信号接收机中的模拟信号检测器，并且可以用减轻滤波器来处理由于接收机中奈奎斯特失配引起的失真。数据信号的注入阶段可以通过使用监视模拟信号接收机的自适应算法来确定。

6. 发明申请

WO2004075469A3 JOINT, ADAPTIVE CONTROL OF EQUALIZATION, SYNCHRONIZATION, AND GAIN IN A DIGITAL COMMUNICATIONS RECEIVER 审中-公开
标题翻译：联合自动控制数字通信接收机的均衡化，同步和增益
公开(公告)号：WO2004075469A3
公开(公告)日：2004-10-07
申请号：PCT/US2004004887
申请日：2004-02-19
申请人： DOTCAST INC , ENDRES THOMAS J , LONG CHRISTOPHER D , FAGAN RORY , CHUNG WONZOO
发明人： ENDRES THOMAS J , LONG CHRISTOPHER D , FAGAN RORY , CHUNG WONZOO
IPC分类号： H03G3/30 , H03L7/091 , H04L7/00 , H04L7/02 , H04L25/03 , H04L27/00 , H04L27/38
CPC分类号： H04L25/03057 , H03G3/3052 , H03G3/3089 , H03L7/091 , H03L2207/50 , H04L7/0029 , H04L7/0062 , H04L7/0079 , H04L7/0278 , H04L27/3809 , H04L2027/0032 , H04L2027/0036 , H04L2027/0038 , H04L2027/0053 , H04L2027/0055 , H04L2027/0065 , H04L2027/0067 , H04L2027/0069
摘要： Various aspects and embodiments of the present invention derive statistics of received signal quality and use these statistics to jointly control operation of timing recovery, carrier recovery, automatic gain control, and equalization functions.
摘要翻译：本发明的各个方面和实施例导出接收信号质量的统计，并使用这些统计来共同控制定时恢复，载波恢复，自动增益控制和均衡功能的操作。

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