公开(公告)号：US20120163833A1

公开(公告)日：2012-06-28

申请号：US12976642

申请日：2010-12-22

申请人： Jun Wang ,  Richard A. Meier

发明人： Jun Wang ,  Richard A. Meier

IPC分类号： H04B10/04

CPC分类号： H04B10/5057 ,  H04B10/25751

摘要： A device is provided for use with a dither tone signal and an information signal. The device includes a laser diode, an electro-optic modulator, a first filter and a second filter. The laser diode can output a first light signal, whereas the electro-optic modulator can transmit a second light signal. The first filter can generate a first filtered signal based on the information signal. The second filter can generate a second filtered signal based on the dither tone signal. The first light signal is based on the dither tone signal, the information signal and the first filtered signal. The second light signal is based on the first light signal, the information signal, the dither tone signal and the second filtered signal. The filtered signals reduce or cancel the undesired leaked/interfering signals.

摘要翻译： 提供了一种用于抖动音调信号和信息信号的装置。 该器件包括激光二极管，电光调制器，第一滤光器和第二滤光器。 激光二极管可以输出第一光信号，而电光调制器可以发射第二光信号。 第一滤波器可以基于信息信号产生第一滤波信号。 第二滤波器可以基于抖动音信号产生第二滤波信号。 第一光信号基于抖动音信号，信息信号和第一滤波信号。 第二光信号基于第一光信号，信息信号，抖动音信号和第二滤波信号。 经滤波的信号减少或消除不需要的泄漏/干扰信号。

公开(公告)号：US20100265829A1

公开(公告)日：2010-10-21

申请号：US12830052

申请日：2010-07-02

申请人： Zihong Lu ,  Richard A. Meier ,  Sunil P. Shah ,  Raj Nagarajan

发明人： Zihong Lu ,  Richard A. Meier ,  Sunil P. Shah ,  Raj Nagarajan

IPC分类号： H04L12/28 ,  H04L12/26

CPC分类号： H04L12/4679 ,  H04L12/40182 ,  H04L12/42 ,  H04L41/12

摘要： A method is provided for determining the integrity of a domain defined in a network. The method includes processes and systems to facilitate the discovery a conceptual ring topology of the domain in the network, and the determination of the integrity of the domain based on the conceptual ring topology that was discovered.

摘要翻译： 提供了一种用于确定在网络中定义的域的完整性的方法。 该方法包括有助于发现网络中的域的概念性环形拓扑的过程和系统，以及基于所发现的概念环形拓扑来确定域的完整性。

公开(公告)号：US06577177B2

公开(公告)日：2003-06-10

申请号：US09282958

申请日：1999-04-01

申请人： Shutong Zhou ,  Timothy J. Brophy ,  Richard A. Meier

发明人： Shutong Zhou ,  Timothy J. Brophy ,  Richard A. Meier

IPC分类号： H04B1000

CPC分类号： H03F1/3276

摘要： An in-line distortion generator for coupling in-line with a non-linear device (NLD) produces an output signal of useful amplitude, but with low composite triple beat and cross modulation distortions. The distortion generator comprises an instant controlled non-linear attenuator which utilizes the non-linear current flowing through a pair of diodes to provide the proper amount of signal attenuation over the entire frequency bandwidth. The distortion generator circuitry is always matched to the NLD, thereby ensuring a frequency response that is predictable and predefined. The distortion generator may also include a temperature compensation circuit to ensure consistent operation throughout a wide temperature range.

摘要翻译： 用于与非线性器件（NLD）在线耦合的在线失真发生器产生有用幅度的输出信号，但是具有低复合三重拍摄和交叉调制失真。 失真发生器包括瞬时受控的非线性衰减器，其利用流过一对二极管的非线性电流在整个频率带宽上提供适当量的信号衰减。 失真发生器电路总是与NLD匹配，从而确保可预测和预定的频率响应。 失真发生器还可以包括温度补偿电路，以确保在宽的温度范围内一致的操作。

公开(公告)号：US07873285B2

公开(公告)日：2011-01-18

申请号：US11752781

申请日：2007-05-23

申请人： Shutong Zhou ,  Richard A. Meier

发明人： Shutong Zhou ,  Richard A. Meier

IPC分类号： H04B10/04

CPC分类号： H04B10/506 ,  H04B10/5053 ,  H04B10/58 ,  H04J14/02

摘要： This anti clipping circuit is for a laser transmitter used to transmit sub-carrier multiplexed signals for CATV applications. The circuit design is based on actual clipping measurements showing the specific time and duration of the clipping events is random. The individual clipping pulses interval is fixed, every 4 us. A PHEMT peak detection circuit is used in conjunction with a missing pulse detector/timer to catch all the clipping events. Thus the laser bias current is adjusted automatically at the specific time of the clipping event and for the duration of all the clipping pulses in the event. The controlled increase and decrease of the lasers bias current is DC coupled back into the normal DC bias path via a diode. This gives the anti clipping circuit noise isolation when there are no clipping events and avoids laser clipping during the laser current recovery time as when using an AC coupling scheme.

摘要翻译： 该抗限幅电路是用于发射用于CATV应用的子载波复用信号的激光发射机。 电路设计基于实际的削波测量，显示剪切事件的具体时间和持续时间是随机的。 每个削波脉冲间隔是固定的，每4 us。 PHEMT峰值检测电路与缺失的脉冲检测器/定时器结合使用以捕获所有限幅事件。 因此，在限幅事件的特定时间和事件中的所有限幅脉冲的持续时间内，自动调整激光偏置电流。 激光器偏置电流的受控增加和减小通过二极管直流耦合回正常的直流偏置通路。 当不存在限幅事件时，这将给出抗限幅电路的噪声隔离，并且避免在激光电流恢复时间期间使用AC耦合方案时的激光削波。

公开(公告)号：US20080292315A1

公开(公告)日：2008-11-27

申请号：US11752781

申请日：2007-05-23

申请人： Shutong Zhou ,  Richard A. Meier

发明人： Shutong Zhou ,  Richard A. Meier

IPC分类号： H04J14/00

CPC分类号： H04B10/506 ,  H04B10/5053 ,  H04B10/58 ,  H04J14/02

摘要： This anti clipping circuit is for a laser transmitter used to transmit sub-carrier multiplexed signals for CATV applications. The circuit design is based on actual clipping measurements showing the specific time and duration of the clipping events is random. The individual clipping pulses interval is fixed, every 4 us. A PHEMT peak detection circuit is used in conjunction with a missing pulse detector/timer to catch all the clipping events. Thus the laser bias current is adjusted automatically at the specific time of the clipping event and for the duration of all the clipping pulses in the event. The controlled increase and decrease of the lasers bias current is DC coupled back into the normal DC bias path via a diode. This gives the anti clipping circuit noise isolation when there are no clipping events and avoids laser clipping during the laser current recovery time as when using an AC coupling scheme.

摘要翻译： 该抗限幅电路是用于发射用于CATV应用的子载波复用信号的激光发射机。 电路设计基于实际的削波测量，显示剪切事件的具体时间和持续时间是随机的。 每个削波脉冲间隔是固定的，每4 us。 PHEMT峰值检测电路与缺失的脉冲检测器/定时器结合使用以捕获所有限幅事件。 因此，在限幅事件的特定时间和事件中的所有限幅脉冲的持续时间内，自动调整激光偏置电流。 激光器偏置电流的受控增加和减小通过二极管直流耦合回正常的直流偏置通路。 当不存在限幅事件时，这将给出抗限幅电路的噪声隔离，并且避免在激光电流恢复时间期间使用AC耦合方案时的激光削波。

公开(公告)号：US20080239970A1

公开(公告)日：2008-10-02

申请号：US11731134

申请日：2007-03-30

申请人： Zihong Lu ,  Richard A. Meier ,  Sunil P. Shah ,  Raj Nagarajan

发明人： Zihong Lu ,  Richard A. Meier ,  Sunil P. Shah ,  Raj Nagarajan

IPC分类号： G01R31/08

CPC分类号： H04L12/4679 ,  H04L12/40182 ,  H04L12/42 ,  H04L41/12

摘要： A method is provided for determining the integrity of a domain defined in a network. The method includes processes and systems to facilitate the discovery a conceptual ring topology of the domain in the network, and the determination of the integrity of the domain based on the conceptual ring topology that was discovered.

摘要翻译： 提供了一种用于确定在网络中定义的域的完整性的方法。 该方法包括有助于发现网络中的域的概念性环形拓扑的过程和系统，以及基于所发现的概念环形拓扑来确定域的完整性。

公开(公告)号：USD372373S

公开(公告)日：1996-08-06

申请号：US29855

申请日：1994-10-18

申请人： Richard A. Meier ,  Michael G. Duncan

设计人： Richard A. Meier ,  Michael G. Duncan

公开(公告)号：US08509626B2

公开(公告)日：2013-08-13

申请号：US12976642

申请日：2010-12-22

申请人： Jun Wang ,  Richard A. Meier

发明人： Jun Wang ,  Richard A. Meier

IPC分类号： H04B10/04

CPC分类号： H04B10/5057 ,  H04B10/25751

摘要： A device is provided for use with a dither tone signal and an information signal. The device includes a laser diode, an electro-optic modulator, a first filter and a second filter. The laser diode can output a first light signal, whereas the electro-optic modulator can transmit a second light signal. The first filter can generate a first filtered signal based on the information signal. The second filter can generate a second filtered signal based on the dither tone signal. The first light signal is based on the dither tone signal, the information signal and the first filtered signal. The second light signal is based on the first light signal, the information signal, the dither tone signal and the second filtered signal. The filtered signals reduce or cancel the undesired leaked/interfering signals.

摘要翻译： 提供了一种用于抖动音调信号和信息信号的装置。 该器件包括激光二极管，电光调制器，第一滤光器和第二滤光器。 激光二极管可以输出第一光信号，而电光调制器可以发射第二光信号。 第一滤波器可以基于信息信号产生第一滤波信号。 第二滤波器可以基于抖动音信号产生第二滤波信号。 第一光信号基于抖动音信号，信息信号和第一滤波信号。 第二光信号基于第一光信号，信息信号，抖动音信号和第二滤波信号。 经滤波的信号减少或消除不需要的泄漏/干扰信号。

公开(公告)号：US5717911A

公开(公告)日：1998-02-10

申请号：US377287

申请日：1995-01-23

申请人： Louise M. Madrid ,  Richard A. Meier ,  Franco Putzolu ,  Sunil Sharma ,  Thomas J. O'Shea ,  James H. Troisi ,  Hansjorg Zeller ,  Gary M. Gilbert ,  Donald S. Maier ,  Elizabeth G. Davis ,  Pedro Celis

发明人： Louise M. Madrid ,  Richard A. Meier ,  Franco Putzolu ,  Sunil Sharma ,  Thomas J. O'Shea ,  James H. Troisi ,  Hansjorg Zeller ,  Gary M. Gilbert ,  Donald S. Maier ,  Elizabeth G. Davis ,  Pedro Celis

IPC分类号： G06F12/00 ,  G06F17/30

CPC分类号： G06F17/30433 ,  Y10S707/99932 ,  Y10S707/99942

摘要： An SQL program executor and an SOL compiler both include options for avoiding recompilations of execution plans whenever the runtime object and the compile time object referenced by an execution plan meet predefined schema similarity criteria. Thus, recompilation is sometimes avoided even though the compile time object has been altered or the run time object is not the same object as the compile time object. To enable late binding, schema information is stored in each execution plan for each object to be accessed by the execution plan. The stored schema information is a subset of the full object schema, and includes information about all the aspects of the objects to be accessed which must remain unchanged in order for the execution plan to be operable. While executing a compiled program, the SQL executor avoids recompilations of execution plans whenever the runtime object and the compile time object referenced by an execution plan meet predefined schema similarity criteria. When a recompilation of an SQL program is required, only the execution plans which do not meet the schema similarity criteria are recompiled if the compiled program has been assigned appropriate runtime parameters. The late binding features of the SQL executor also enable a compiled program to access objects distinct from the objects referenced by the program at compile time. Similarly, the SQL compiler includes the ability to recompile only those execution plans which do not meet the schema similarity criteria and thus are inoperable.

摘要翻译： SQL程序执行器和SOL编译器都包括用于在运行时对象和执行计划引用的编译时对象满足预定义的模式相似性标准时避免重新编译执行计划的选项。 因此，即使编译时间对象已被更改或运行时间对象与编译时间对象不是相同的对象，有时也可避免重新编译。 为了启用后期绑定，模式信息存储在执行计划要访问的每个对象的每个执行计划中。 存储的模式信息是完整对象模式的一个子集，并且包括关于要访问的对象的所有方面的信息，这些信息必须保持不变，以便执行计划可操作。 在执行编译程序时，只要执行计划引用的运行时对象和编译时对象都符合预定义的模式相似性标准，SQL执行程序就会避免重新编译执行计划。 当需要重新编译SQL程序时，如果已编译的程序已分配适当的运行时参数，则仅重新编译不符合模式相似性标准的执行计划。 SQL执行程序的后期绑定功能还使得编译的程序能够在编译时访问与程序引用的对象不同的对象。 类似地，SQL编译器包括仅重新编译那些不符合模式相似性标准因而无法操作的执行计划的能力。

公开(公告)号：US08583833B2

公开(公告)日：2013-11-12

申请号：US12830052

申请日：2010-07-02

申请人： Zihong Lu ,  Richard A. Meier ,  Sunil P. Shah ,  Raj Nagarajan

发明人： Zihong Lu ,  Richard A. Meier ,  Sunil P. Shah ,  Raj Nagarajan

IPC分类号： G06F15/16

CPC分类号： H04L12/4679 ,  H04L12/40182 ,  H04L12/42 ,  H04L41/12

摘要： A method is provided for determining the integrity of a domain defined in a network. The method includes processes and systems to facilitate the discovery a conceptual ring topology of the domain in the network, and the determination of the integrity of the domain based on the conceptual ring topology that was discovered.

摘要翻译： 提供了一种用于确定在网络中定义的域的完整性的方法。 该方法包括有助于发现网络中的域的概念性环形拓扑的过程和系统，以及基于所发现的概念环形拓扑来确定域的完整性。