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51. 发明授权

US06888938B2 Dynamically adjustable digital gyrator having extendable feedback for stable DC load line 有权
标题翻译：动态可调数字回转器具有稳定的直流负载线的可延伸反馈
公开(公告)号：US06888938B2
公开(公告)日：2005-05-03
申请号：US09884040
申请日：2001-06-20
申请人： Hong Cui , Lane A. Smith
发明人： Hong Cui , Lane A. Smith
IPC分类号： H04M1/738 , H04M19/00 , H04M1/00
CPC分类号： H04M19/001 , H04M1/738
摘要： A dynamically adjustable digital gyrator device for a telephone line interface (e.g., a DAA) utilizing extended feedback and a dynamically adjustable filter to achieve stable convergence in the control of DC line current on a telephone line a short period of time. The low pass filter of the digital gyrator includes at least two (2) different fast filter settings and at least two (2) different slow filter settings based on possible load terminations (e.g., PBX, TAS, etc.), which can be determined based on the dynamic detection of an oscillation on the line. For instance, in a disclosed example, a voice band modem system is allowed to go off-hook with a 1 Hz cutoff low pass filter, and then the output of the low pass filter is checked for an oscillation. If an oscillation is detected, then the poles and/or zeroes of the low pass filter cutoff are changed to a slower convergence rate cutoff frequency (e.g., to 0.1 Hz). As a result, the exemplary voice band modem will converge stably and quickly (e.g., in less than 1 second) before dialing begins. By controlling the DC line current digitally, software can be used to set the DC line current in accordance with predefined characteristics. Predefined characteristics can be set to accommodate varying country specifications instead of using switches to control resistors and capacitors.
摘要翻译：一种用于电话线接口（例如，DAA）的动态可调数字旋转器装置，其利用扩展反馈和可动态调节的滤波器，以在短时间内在电话线上控制DC线路电流中实现稳定的收敛。数字回转器的低通滤波器包括至少两（2）个不同的快速滤波器设置和至少两（2）个基于可能的负载终端（例如，PBX，TAS等）的慢滤波器设置，其可以被确定基于在线上的振荡的动态检测。例如，在公开的示例中，允许语音频带调制解调器系统以1Hz截止低通滤波器摘机，然后检查低通滤波器的输出是否有振荡。如果检测到振荡，则将低通滤波器截止的极点和/或零点改变为较慢的收敛速率截止频率（例如，至0.1Hz）。结果，示例性语音频带调制解调器将在拨号开始之前稳定和快速地（例如，在不到1秒钟内）收敛。通过数字控制直流线路电流，可以使用软件根据预定义的特性设置直流线路电流。预定义的特性可以设置为适应不同的国家规范，而不是使用开关来控制电阻和电容。

52. 发明授权

US06763107B1 Method and apparatus for reducing distortion in a line powered modulator circuit 失效
标题翻译：用于减少线路供电调制器电路中的失真的方法和装置
公开(公告)号：US06763107B1
公开(公告)日：2004-07-13
申请号：US09431913
申请日：1999-11-02
申请人： Jonathan Herman Fischer , Keith Eugene Hollenbach , Donald Raymond Laturell , Lane A. Smith , Weilin Zhu
发明人： Jonathan Herman Fischer , Keith Eugene Hollenbach , Donald Raymond Laturell , Lane A. Smith , Weilin Zhu
IPC分类号： H04M900
CPC分类号： H04M19/001
摘要： A method and apparatus for a telephone line interface or data access arrangement (DAA) which includes a shunt regulator in series with a line modulator. A sense resistor is placed in series between the shunt regulator and the line modulator to provide a measurement of the amount of current distortion in the DAA. The line modulator contains a Darlington pair which reduces the amount of current drawn by the line modulator, allowing the sense resistor to sense a majority of the system current. The voltage across the sense resistor is fed back to the line modulator. The line modulator is capable of adjusting the AC modulation and the DC termination presented to the telephone line. The method includes drawing power from the telephone line using a shunt regulator, modulating the telephone line in series with the shunt regulator, sensing a level of distortion in the DAA, and feeding the sensed level of distortion to the line modulator.
摘要翻译：一种用于电话线接口或数据访问装置（DAA）的方法和装置，其包括与线路调制器串联的分流调节器。在分流调节器和线路调制器之间串联一个检测电阻，以提供DAA中电流失真量的测量。线路调制器包含一个达林顿对，减少线路调制器吸收的电流量，允许检测电阻感测系统电流的大部分。检测电阻两端的电压反馈到线路调制器。线路调制器能够调整AC调制和提供给电话线的DC终端。该方法包括使用分流调节器从电话线中抽取功率，调制与分流调节器串联的电话线，感测DAA中的失真水平，以及将感测到的失真电平馈送到线路调制器。

53. 发明授权

US06466650B1 Telecom service identification transponder apparatus and technique 有权
标题翻译：电信业务识别应答器设备及技术
公开(公告)号：US06466650B1
公开(公告)日：2002-10-15
申请号：US09592863
申请日：2000-06-13
申请人： Jonathan H. Fischer , Donald R. Laturell , Lane A. Smith
发明人： Jonathan H. Fischer , Donald R. Laturell , Lane A. Smith
IPC分类号： H04M124
CPC分类号： H04L1/24 , H04M3/30
摘要： Telephone line service type identification is provided to a telephone technician in the field by the placement of one or more tuned circuit(s) across the telephone line. In one embodiment, an inexpensive tuned circuit such as a ceramic resonator forms a telecom service resonator ID device which is placed across a telephone line, either at the central office or at the customer premises. Injection of a test current at a predetermined frequency, and a suitable amplitude of the same indicates to the technician aspects of telecom service to that particular telephone line (e.g., the existence of POTS, ISDN, and/or xDSL) and or use of the telephone line by a home network such as HPNA. In another embodiment, a telecom service transponder ID device is formed to provide line service identification to an interrogating line technician. The telecom service transponder ID device is activated when the test signal including an appropriate frequency is present to cause excitation in the telecom service transponder ID device. The resonator and transponder devices preferably have very high impedances at all frequencies except at the desired resonant frequency, and thus avoids violation of telephone service standards. The resonator or transponder ID devices may be placed anywhere along the telephone line, but preferably at the customer premises, or in installed equipment utilizing the telephone line. More than one resonation frequency may be implemented with parallel tuned circuits to indicate additional features of service on the telephone line (e.g., the number of services, the existence of a data service, etc.). The frequencies of resonance of the tuned circuits are preferably chosen to exist between the spectrum utilized by the various operating services.
摘要翻译：通过在电话线路上放置一个或多个调谐电路，在现场向电话技术人员提供电话线服务类型识别。在一个实施例中，诸如陶瓷谐振器的便宜的调谐电路形成电信服务谐振器ID设备，其被布置在电话线路上，无论是在中心局还是在客户驻地处。以预定频率注入测试电流，并且其适当的幅度指示给该特定电话线的电信服务的技术人员方面（例如，POTS，ISDN和/或xDSL的存在）和/或使用电话线由家庭网络如HPNA。在另一个实施例中，形成电信服务转发器ID设备以向询问线技术人员提供线路服务识别。当存在包括适当频率的测试信号以引起电信业务转发器ID设备中的激励时，电信业务应答器ID设备被激活。除了在期望的谐振频率之外，谐振器和应答器装置优选地在所有频率处具有非常高的阻抗，并且因此避免违反电话服务标准。谐振器或应答器ID设备可以放置在电话线的任何地方，但优选地位于客户住宅处，或者在使用电话线路的安装设备中。可以使用并行调谐电路来实现多于一个谐振频率以指示电话线上的服务的附加特征（例如，服务的数量，数据服务的存在等）。调谐电路的谐振频率优选地被选择为存在于由各种操作服务使用的频谱之间。

54. 发明授权

US08432959B2 Method and apparatus for equalization using one or more qualifiers 有权
标题翻译：使用一个或多个限定符进行均衡的方法和装置
公开(公告)号：US08432959B2
公开(公告)日：2013-04-30
申请号：US11930814
申请日：2007-10-31
申请人： Pervez M. Aziz , Mohammad S. Mobin , Gregory W Sheets , Lane A. Smith , Paul H. Tracy
发明人： Pervez M. Aziz , Mohammad S. Mobin , Gregory W Sheets , Lane A. Smith , Paul H. Tracy
IPC分类号： H03H7/30 , H03K5/159
CPC分类号： H04L25/0262 , H04L25/03006 , H04L25/03057 , H04L2025/03375 , H04L2025/03535 , H04L2025/03726
摘要： Methods and apparatus are provided for equalizing a received signal. A received signal is equalized by updating one or more equalization parameters; and discarding the updated equalization parameters if one or more predefined qualifier conditions are detected during the equalizing step. The received signal can optionally be equalized using the updated equalization parameters if the predefined qualifier conditions are not detected during the equalizing step. The updated equalization parameters can optionally be stored if the one or more predefined qualifier conditions are not detected during the equalizing step.
摘要翻译：提供了用于均衡接收信号的方法和装置。通过更新一个或多个均衡参数来使接收信号相等; 以及如果在均衡步骤期间检测到一个或多个预定义的限定条件，则丢弃所述更新的均衡参数。如果在平衡步骤期间未检测到预定义的限定条件，则可以使用更新的均衡参数来选择性地均衡所接收的信号。如果在均衡步骤期间未检测到一个或多个预定义限定条件，则可以可选地存储更新的均衡参数。

55. 发明授权

US08126039B2 Methods and apparatus for evaluating the eye margin of a communications device using a data eye monitor 有权
标题翻译：使用数据眼监视器评估通信设备的眼边的方法和装置
公开(公告)号：US08126039B2
公开(公告)日：2012-02-28
申请号：US11434688
申请日：2006-05-16
申请人： Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Craig B. Ziemer
发明人： Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Craig B. Ziemer
IPC分类号： H04B3/46
CPC分类号： H04L1/20 , H04B17/309
摘要： Methods and apparatus are provided for evaluating the eye margin of a communications device using a data eye monitor. The quality of a data eye associated with a signal is evaluated by sampling the signal for a plurality of different phases; evaluating the samples to evaluate one or more of a height and width of the data eye; and determining whether the one or more of the height and width satisfy one or more predefined criteria. One or more parameters of the communications device can optionally be adjusted if the communications device does not satisfy the one or more predefined criteria. The communications device can optionally be assigned to a quality category based on the evaluation. A phase offset between a first clock signal used to sample the signal and one or more clocks used to sample data is reduced.
摘要翻译：提供的方法和装置用于评估使用数据眼监护仪的通信设备的眼部边缘。与信号相关联的数据眼的质量通过对多个不同相位的信号进行采样来评估; 评估样本以评估数据眼睛的高度和宽度中的一个或多个; 以及确定所述高度和宽度中的一个或多个是否满足一个或多个预定标准。如果通信设备不满足一个或多个预定标准，则可以可选地调整通信设备的一个或多个参数。可以根据评估可选地将通信设备分配给质量类别。减少用于采样信号的第一时钟信号与用于采样数据的一个或多个时钟之间的相位偏移。

56. 发明授权

US08081011B2 Method and apparatus for regulating a power supply of an integrated circuit 有权
标题翻译：用于调节集成电路的电源的方法和装置
公开(公告)号：US08081011B2
公开(公告)日：2011-12-20
申请号：US12843139
申请日：2010-07-26
申请人： Kouros Azimi , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
发明人： Kouros Azimi , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
IPC分类号： H03K17/16 , H03K19/003
CPC分类号： H02J1/00
摘要： Disclosed is a circuit for adjusting a voltage supplied to an IC by a power supply circuit that produces a regulated-output voltage based on an output-control signal generated by a resistive voltage divider. The circuit includes a PVT detector configured to generate an interface control signal and an interface circuit (i) connected to PVT detector and to the resistive voltage divider and (ii) configured to adjust its resistance in response to the interface control signal. Adjusting the resistance of the interface circuit causes the voltage of the output-control signal to be adjusted, thus causing the power supply circuit to adjust the regulated output voltage.
摘要翻译：公开了一种用于通过电源电路来调节提供给IC的电压的电路，该电源电路基于由电阻分压器产生的输出控制信号产生调节输出电压。电路包括配置成产生接口控制信号的PVT检测器和连接到PVT检测器和电阻分压器的接口电路（i），以及（ii）被配置为响应于接口控制信号调整其电阻。调整接口电路的电阻可以调节输出控制信号的电压，从而使电源电路调整稳压输出电压。

57. 发明授权

US07912210B2 Inductive coupling for communications equipment interface circuitry 有权
标题翻译：用于通信设备接口电路的感应耦合
公开(公告)号：US07912210B2
公开(公告)日：2011-03-22
申请号：US12187456
申请日：2008-08-07
申请人： Timothy W. Fuehrer , Donald R. Laturell , Lane A. Smith , Christopher J. Wittensoldner
发明人： Timothy W. Fuehrer , Donald R. Laturell , Lane A. Smith , Christopher J. Wittensoldner
IPC分类号： H04M1/00
CPC分类号： H04L25/0266 , H04M11/06
摘要： A system for improving the attenuation of an undesired signal found in a differential signal path through the use of inductive coupling. The system includes a primary inductor, a secondary inductor, and a filter. The primary inductor and the secondary inductor operably couple an input differential signal pair to an output differential signal pair, and the filter attenuates an undesired signal in the output differential signal pair.
摘要翻译：一种用于通过使用电感耦合来改善在差分信号路径中发现的不期望信号的衰减的系统。该系统包括初级电感器，次级电感器和滤波器。主电感器和次级电感器将输入差分信号对可操作地耦合到输出差分信号对，并且滤波器衰减输出差分信号对中的不期望信号。

58. 发明申请

US20100289476A1 METHOD AND APPARATUS FOR REGULATING A POWER SUPPLY OF AN INTEGRATED CIRCUIT 有权
标题翻译：用于调节集成电路电源的方法和装置
公开(公告)号：US20100289476A1
公开(公告)日：2010-11-18
申请号：US12843139
申请日：2010-07-26
申请人： Kouros Azimi , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
发明人： Kouros Azimi , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
IPC分类号： H02J4/00
CPC分类号： H02J1/00
摘要： Disclosed is a circuit for adjusting a voltage supplied to an IC by a power supply circuit that produces a regulated-output voltage based on an output-control signal generated by a resistive voltage divider. The circuit includes a PVT detector configured to generate an interface control signal and an interface circuit (i) connected to PVT detector and to the resistive voltage divider and (ii) configured to adjust its resistance in response to the interface control signal. Adjusting the resistance of the interface circuit causes the voltage of the output-control signal to be adjusted, thus causing the power supply circuit to adjust the regulated output voltage.
摘要翻译：公开了一种用于通过电源电路来调节提供给IC的电压的电路，该电源电路基于由电阻分压器产生的输出控制信号产生调节输出电压。电路包括配置成产生接口控制信号的PVT检测器和连接到PVT检测器和电阻分压器的接口电路（i），以及（ii）被配置为响应于接口控制信号调整其电阻。调整接口电路的电阻可以调节输出控制信号的电压，从而使电源电路调整稳压输出电压。

59. 发明申请

US20100176856A1 METHOD AND APPARATUS FOR DETECTING AND ADJUSTING CHARACTERISTICS OF A SIGNAL 失效
标题翻译：用于检测和调整信号特性的方法和装置
公开(公告)号：US20100176856A1
公开(公告)日：2010-07-15
申请号：US12730671
申请日：2010-03-24
申请人： Kouros Azimi , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
发明人： Kouros Azimi , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
IPC分类号： H03K5/12
CPC分类号： H03K5/02 , H03K5/06 , H03K19/017581 , H04L25/0288
摘要： Disclosed is a circuit that adjusts a characteristic of a signal transmitted from a transmitter to a receiver over a communication channel (e.g., a wire, a backplane, etc.). The circuit includes a latch that receives the signal at a predetermined point in the circuit and samples a voltage of the signal many times after a threshold voltage is applied to the latch. The circuit also includes a processor that determines the characteristic of the signal when the sampled voltages indicate a transition point and that adjusts the threshold voltage when the sampled voltages do not indicate a transition point. The processor adjusts the characteristic of the signal by adjusting at least one of a current and a voltage of the transmitter when the characteristic of the signal is outside a predetermined range.
摘要翻译：公开了一种通过通信信道（例如，线，背板等）调整从发射机发射到接收机的信号的特性的电路。该电路包括一个锁存器，该锁存器在阈值电压施加到锁存器之后多次接收电路中预定点处的信号并对信号的电压进行多次采样。该电路还包括一个处理器，当采样电压指示转换点时，确定信号的特性，并且当采样电压不指示转换点时调整阈值电压。当信号的特性在预定范围之外时，处理器通过调节发射机的电流和电压中的至少一个来调整信号的特性。

60. 发明授权

US07755421B2 Analog amplifier having DC offset cancellation circuit and method of offset cancellation for analog amplifiers 有权
标题翻译：具有DC偏移消除电路的模拟放大器和模拟放大器的偏移消除方法
公开(公告)号：US07755421B2
公开(公告)日：2010-07-13
申请号：US12437860
申请日：2009-05-08
申请人： Jinghong Chen , Gregory W. Sheets , Joseph Anidjar , Robert J. Kapuschinsky , Lane A. Smith
发明人： Jinghong Chen , Gregory W. Sheets , Joseph Anidjar , Robert J. Kapuschinsky , Lane A. Smith
IPC分类号： H03F1/02
CPC分类号： H03F3/45973 , H03F3/45977 , H03F2203/45101 , H03F2203/45434 , H03F2203/45564 , H03F2203/45588 , H03F2203/45622
摘要： An amplifier having DC offset compensation includes at least one input node and a pair of differential output nodes, a biasing circuit coupled to the input node; and a plurality of current sources. Selected ones of said current sources are coupled to the input node to adjust a DC voltage at the input node to provide DC offset compensation for the amplifier
摘要翻译：具有DC偏移补偿的放大器包括至少一个输入节点和一对差分输出节点，耦合到输入节点的偏置电路; 和多个电流源。所选择的所述电流源耦合到输入节点以调整输入节点处的DC电压，以为放大器提供DC偏移补偿

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