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公开(公告)号：US07499402B2
公开(公告)日：2009-03-03
申请号：US11054345
申请日：2005-02-08
申请人： Pierce Keating , Yan Zhang , Bill Stevens
发明人： Pierce Keating , Yan Zhang , Bill Stevens
IPC分类号： H04L12/26
CPC分类号： H04L67/325 , H04L43/0858 , H04L47/10 , H04L69/28
摘要： Controlling the flow of network traffic to avoid undesired delay in the transmission of timing sensitive packets is disclosed. A plurality of packets to be transmitted via a network transmission path is monitored. A time at which a timing sensitive packet will become available for transmission via the network transmission path is anticipated. The plurality of packets is controlled in light of the anticipated time so that packets other than the timing sensitive packet will not occupy the network transmission path at a time associated with the anticipated time. Approximating a maximum data transmission rate associated with a network transmission path by sending and analyzing receipt of a series of test packets is disclosed. Approximating a buffer size of a buffer associated with a network transmission path by sending and analyzing receipt of a series of test packets is disclosed.
摘要翻译： 公开了控制网络流量的流量以避免定时敏感分组的传输中的不希望的延迟。 监视经由网络传输路径发送的多个分组。 期望时间敏感分组将可用于经由网络传输路径传输的时间。 根据预期时间来控制多个分组，使得除了定时敏感分组之外的分组在与预期时间相关联的时间不占用网络传输路径。 公开了通过发送和分析一系列测试分组的接收来近似与网络传输路径相关联的最大数据传输速率。 公开了通过发送和分析一系列测试分组的接收来近似与网络传输路径相关联的缓冲器的缓冲器大小。
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公开(公告)号：US08237515B2
公开(公告)日：2012-08-07
申请号：US12075307
申请日：2008-03-10
申请人： Pierce Keating
发明人： Pierce Keating
摘要： Crystal oscillator control and calibration is disclosed. Temperature and frequency control circuits included on a printed circuit board (PCB) comprising a crystal oscillator are used to determine, for each of a plurality of set points in a range of sensed internal temperatures sensed by an internal temperature sensing circuit or device located adjacent to the oscillator in a thermally insulated region of the PCB, a corresponding compensation required to be applied to maintain a desired oscillator output frequency. The PCB is configured to use at least the determined compensation values and a sensed internal temperature to determine during operation of the PCB a compensation, if any, to be applied to maintain the desired oscillator output frequency.
摘要翻译： 公开了晶体振荡器的控制和校准。 包括在包括晶体振荡器的印刷电路板（PCB）上的温度和频率控制电路被用于确定由内部温度检测电路或位于相邻的温度感测电路的设备感测到的感测内部温度的范围内的多个设定点中的每一个 振荡器在PCB的绝热区域中，需要应用相应的补偿来保持所需的振荡器输出频率。 PCB被配置为至少使用所确定的补偿值和感测的内部温度以在PCB的操作期间确定要施加的补偿（如果有的话）以保持期望的振荡器输出频率。
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公开(公告)号：US20080218279A1
公开(公告)日：2008-09-11
申请号：US12075307
申请日：2008-03-10
申请人： Pierce Keating
发明人： Pierce Keating
摘要： Crystal oscillator control and calibration is disclosed. Temperature and frequency control circuits included on a printed circuit board (PCB) comprising a crystal oscillator are used to determine, for each of a plurality of set points in a range of sensed internal temperatures sensed by an internal temperature sensing circuit or device located adjacent to the oscillator in a thermally insulated region of the PCB, a corresponding compensation required to be applied to maintain a desired oscillator output frequency. The PCB is configured to use at least the determined compensation values and a sensed internal temperature to determine during operation of the PCB a compensation, if any, to be applied to maintain the desired oscillator output frequency.
摘要翻译： 公开了晶体振荡器的控制和校准。 包括在包括晶体振荡器的印刷电路板（PCB）上的温度和频率控制电路被用于确定由内部温度检测电路或位于相邻的温度感测电路的设备感测到的感测内部温度的范围内的多个设定点中的每一个 振荡器在PCB的绝热区域中，需要应用相应的补偿来保持所需的振荡器输出频率。 PCB被配置为至少使用所确定的补偿值和感测的内部温度以在PCB的操作期间确定要施加的补偿（如果有的话）以保持期望的振荡器输出频率。
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公开(公告)号：US20060267695A1
公开(公告)日：2006-11-30
申请号：US11441266
申请日：2006-05-25
申请人： Pierce Keating
发明人： Pierce Keating
IPC分类号： H03L7/00
摘要： A phase locked loop with phase clipping and/or resynchronization is disclosed. A reference signal is compared to a feedback signal derived at least in part from an output signal of an oscillator to determine a phase error. A magnitude of at least one of the phase error and a change in the phase error, if required, is clipped to provide at least one of a clipped phase error that has a clipped magnitude that does not exceed a prescribed maximum phase error and a clipped change in phase error that has a clipped magnitude that does not exceed a prescribed maximum change in phase error. If a resynchronization triggering event is detected, the oscillator is resynchronized with the reference signal.
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公开(公告)号：US07508274B2
公开(公告)日：2009-03-24
申请号：US11441266
申请日：2006-05-25
申请人： Pierce Keating
发明人： Pierce Keating
IPC分类号： H03L7/085
摘要： A phase locked loop with phase clipping and/or resynchronization is disclosed. A reference signal is compared to a feedback signal derived at least in part from an output signal of an oscillator to determine a phase error. A magnitude of at least one of the phase error and a change in the phase error, if required, is clipped to provide at least one of a clipped phase error that has a clipped magnitude that does not exceed a prescribed maximum phase error and a clipped change in phase error that has a clipped magnitude that does not exceed a prescribed maximum change in phase error. If a resynchronization triggering event is detected, the oscillator is resynchronized with the reference signal.
摘要翻译： 公开了一种具有相位限幅和/或再同步的锁相环。 将参考信号与至少部分地从振荡器的输出信号导出的反馈信号进行比较，以确定相位误差。 如果需要，相位误差和相位误差的变化中的至少一个的幅度被限制，以提供具有不超过规定的最大相位误差的限制幅度和限幅的相位误差中的至少一个 具有不超过规定的相位误差最大变化的限幅幅度的相位误差的变化。 如果检测到重新同步触发事件，则振荡器与参考信号重新同步。
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公开(公告)号：US07250822B2
公开(公告)日：2007-07-31
申请号：US11255094
申请日：2005-10-19
申请人： Pierce Keating
发明人： Pierce Keating
IPC分类号： H03D13/00
摘要： An oscillator circuit and a method of generating an oscillating signal are disclosed. An oscillator comprises a first flip-flop and a second flip-flop coupled with the first flip-flop to provide an oscillating signal. A method of generating an oscillating signal comprises providing the oscillating signal as a first clock input to a first flip flop, inverting the oscillating signal and providing the inverted oscillating signal as a second clock input to a second flip flop, using the output of the first flip flop and the output of the second flip flop to generate a combined output that alternates between a logic low level and a logic high level, and using the combined output to sustain the oscillation of the oscillating signal.
摘要翻译： 公开了振荡电路和产生振荡信号的方法。 振荡器包括与第一触发器耦合以提供振荡信号的第一触发器和第二触发器。 一种产生振荡信号的方法包括：提供振荡信号作为第一触发器的第一时钟输入，反相振荡信号，并将反相振荡信号提供给第二触发器的第二时钟输入，使用第一触发器的输出 触发器和第二触发器的输出以产生在逻辑低电平和逻辑高电平之间交替的组合输出，并且使用组合输出来维持振荡信号的振荡。
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7.发明申请Method and apparatus for frequency and timing distribution through a packet-based network 审中-公开通过基于分组的网络进行频率和时序分配的方法和装置公开(公告)号：US20070025399A1
公开(公告)日：2007-02-01
申请号：US11512064
申请日：2006-08-28
申请人： Pierce Keating
发明人： Pierce Keating
IPC分类号： H04J3/06
CPC分类号： H04J3/0682 , H04J3/0661 , H04L7/08
摘要： A reference frequency is distributed through a packet-based network to remote elements in a system. Timing packets are sent from a master timing element, to be received by at least one peripheral timing element. Echo messages are sent to the master timing element by each peripheral timing element after a unique delay, in response to the reception of a timing packet. Loopback delay measurements are included in each timing packet for each peripheral timing element. Each peripheral timing element locks a loop using only timing packets which incur a minimum loopback delay
摘要翻译： 参考频率通过基于分组的网络分发到系统中的远程元件。 定时分组从主定时元件发送，由至少一个外围定时元件接收。 响应于定时分组的接收，回波消息由唯一延迟之后的每个外围定时元件发送到主定时元件。 环路延迟测量包括在每个周期定时元件的每个定时分组中。 每个外围定时元件仅使用产生最小环回延迟的定时分组来锁定循环
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公开(公告)号：US07474712B1
公开(公告)日：2009-01-06
申请号：US10749799
申请日：2003-12-30
申请人： Pierce Keating
发明人： Pierce Keating
IPC分类号： H04L24/00
CPC分类号： H03M1/1255 , H04L27/2338
摘要： A method and system for processing a signal are disclosed. The method comprises: applying an algorithm to selectively negate a plurality of samples of the signal to provide negated and non-negated samples of the signal, and use the negated and non-negated samples as in-phase (I) and/or quadrature (Q) components of a plurality of complex samples, the algorithm being such that the plurality of complex samples are equivalent to the result that would be obtained by applying an effective sampling function to the signal, and selecting a beat frequency of the effective sampling function by adjusting the algorithm.
摘要翻译： 公开了一种用于处理信号的方法和系统。 该方法包括：应用一种算法来选择性地取消信号的多个样本以提供信号的否定和非否定采样，并将否定和非否定采样用作同相（I）和/或正交（ Q）多个复数样本的分量，所述算法使得所述多个复样本等于通过对所述信号应用有效采样函数而获得的结果，并且通过以下方式选择所述有效采样函数的拍频 调整算法。
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公开(公告)号：US20060109058A1
公开(公告)日：2006-05-25
申请号：US11255094
申请日：2005-10-19
申请人： Pierce Keating
发明人： Pierce Keating
IPC分类号： H03L7/085
摘要： An oscillator circuit and a method of generating an oscillating signal are disclosed. An oscillator comprises a first flip-flop and a second flip-flop coupled with the first flip-flop to provide an oscillating signal. A method of generating an oscillating signal comprises providing the oscillating signal as a first clock input to a first flip flop, inverting the oscillating signal and providing the inverted oscillating signal as a second clock input to a second flip flop, using the output of the first flip flop and the output of the second flip flop to generate a combined output that alternates between a logic low level and a logic high level, and using the combined output to sustain the oscillation of the oscillating signal.
摘要翻译： 公开了振荡电路和产生振荡信号的方法。 振荡器包括与第一触发器耦合以提供振荡信号的第一触发器和第二触发器。 一种产生振荡信号的方法包括：提供振荡信号作为第一触发器的第一时钟输入，反相振荡信号，并将反相振荡信号提供给第二触发器的第二时钟输入，使用第一触发器的输出 触发器和第二触发器的输出以产生在逻辑低电平和逻辑高电平之间交替的组合输出，并且使用组合输出来维持振荡信号的振荡。
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公开(公告)号：US06975174B1
公开(公告)日：2005-12-13
申请号：US10749798
申请日：2003-12-30
申请人： Pierce Keating
发明人： Pierce Keating
摘要： An oscillator circuit and a method of generating an oscillating signal are disclosed. An oscillator comprises a first flip-flop and a second flip-flop coupled with the first flip-flop to provide an oscillating signal. A method of generating an oscillating signal comprises providing the oscillating signal as a first clock input to a first flip flop, inverting the oscillating signal and providing the inverted oscillating signal as a second clock input to a second flip flop, using the output of the first flip flop and the output of the second flip flop to generate a combined output that alternates between a logic low level and a logic high level, and using the combined output to sustain the oscillation of the oscillating signal.
摘要翻译： 公开了振荡电路和产生振荡信号的方法。 振荡器包括与第一触发器耦合以提供振荡信号的第一触发器和第二触发器。 一种产生振荡信号的方法包括：提供振荡信号作为第一触发器的第一时钟输入，反相振荡信号，并将反相振荡信号提供给第二触发器的第二时钟输入，使用第一触发器的输出 触发器和第二触发器的输出以产生在逻辑低电平和逻辑高电平之间交替的组合输出，并且使用组合输出来维持振荡信号的振荡。
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