专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明申请

US20050149814A1 Diagnostics of cable and link performance for a high-speed communication system 有权
标题翻译：高速通信系统的电缆和链路性能诊断
公开(公告)号：US20050149814A1
公开(公告)日：2005-07-07
申请号：US11024547
申请日：2004-12-29
申请人： Oscar Agazzi , Kenneth Hung , David Sorensen
发明人： Oscar Agazzi , Kenneth Hung , David Sorensen
IPC分类号： H04L12/26 , G06F11/00 , G01R31/28 , G06F11/30 , G08C25/00 , H03M13/00 , H04L1/00
CPC分类号： H04L41/0681 , H04L41/22 , H04L43/022 , H04L43/50
摘要： A method and system for performing diagnostic tests on a real-time system controlled by a state machine. A sequence of states recorded as the state machine operates is used to determine error conditions. The sequence of states is compared to expected sequences of states to determine what, if any, errors have occurred. If the real-time system, such as a transceiver in a communication system, has adaptive components, the status of the adaptive components is used to estimate the condition of any external systems coupled to the real-time system.
摘要翻译：一种用于对由状态机控制的实时系统执行诊断测试的方法和系统。记录为状态机的状态序列用于确定错误状况。将状态序列与预期的状态序列进行比较，以确定发生错误（如果有的话）。如果诸如通信系统中的收发器的实时系统具有自适应组件，则使用自适应组件的状态来估计耦合到实时系统的任何外部系统的状况。

32. 发明申请

US20050008105A1 Dynamic regulation of power consumption of a high-speed communication system 有权
标题翻译：高速通信系统功耗动态调节
公开(公告)号：US20050008105A1
公开(公告)日：2005-01-13
申请号：US10912960
申请日：2004-08-06
申请人： Oscar Agazzi , John Creigh , Mehdi Hatamian , Henry Samueli
发明人： Oscar Agazzi , John Creigh , Mehdi Hatamian , Henry Samueli
IPC分类号： G01R31/30 , G01R31/317 , G01R31/3185 , H04B3/23 , H04B3/32 , H04B3/54 , H04L1/00 , H04L1/24 , H04L5/14 , H04L7/00 , H04L7/02 , H04L7/033 , H04L25/03 , H04L25/06 , H04L25/14 , H04L25/49 , H04L25/497 , H04L27/06
CPC分类号： H04L7/0062 , G01R31/3004 , G01R31/3008 , G01R31/3016 , G01R31/31715 , G01R31/318502 , G01R31/318552 , G01R31/318594 , H04B3/23 , H04B3/32 , H04B3/542 , H04B2203/5408 , H04L1/0054 , H04L1/242 , H04L5/14 , H04L7/0334 , H04L25/0264 , H04L25/03038 , H04L25/03057 , H04L25/03146 , H04L25/03267 , H04L25/03987 , H04L25/067 , H04L25/14 , H04L25/4917 , H04L25/497 , H04L2025/03363 , H04L2025/03369 , H04L2025/03477 , H04L2025/0349 , H04L2025/03496 , H04L2025/03503 , H04L2025/03585 , H04L2025/03611 , H04L2025/03617 , H04L2025/03745
摘要： A method for dynamically regulating the power consumption of a high-speed integrated circuit which includes a multiplicity of processing blocks. A first metric and a second metric, which are respectively related to a first performance parameter and a second performance parameter of the integrated circuit, are defined. The first metric is set at a pre-defined value. Selected blocks of the multiplicity of processing blocks are disabled in accordance with a set of pre-determined patterns. The second metric is evaluated, while the disabling operation is being performed, to generate a range of values of the second metric. Each of the values corresponds to the pre-defined value of the first metric. A most desirable value of the second metric is determined from the range of values and is matched to a corresponding pre-determined pattern. The integrated circuit is subsequently operated with selected processing blocks disabled in accordance with the matching pre-determined pattern.
摘要翻译：一种用于动态地调节包括多个处理块的高速集成电路的功耗的方法。定义分别与集成电路的第一性能参数和第二性能参数相关的第一度量和第二度量。第一个度量值设置为预定义值。多个处理块的选定块根据一组预先确定的模式被禁用。在执行禁用操作的同时评估第二度量，以生成第二度量值的范围。每个值对应于第一个度量的预定义值。从值的范围确定第二度量的最理想值，并且与对应的预定模式匹配。随后，根据匹配的预定模式禁用选定的处理块来操作集成电路。

33. 发明授权

US4953186A Phase jitter tracker 失效
标题翻译：相位抖动跟踪器
公开(公告)号：US4953186A
公开(公告)日：1990-08-28
申请号：US157986
申请日：1988-02-19
申请人： Steve Levy , Dave Hedberg , Oscar Agazzi
发明人： Steve Levy , Dave Hedberg , Oscar Agazzi
IPC分类号： H04B1/12
CPC分类号： H04B1/123
摘要： The jitter tracker of the present invention uses a decision-directed error signal as an input to a feedback loop. The error signal is filtered and coupled to a phase locked loop centered at the center of the jitter tracking frequency range, which in the preferred embodiment is 55 Hz. The frequency width and center track and lock frequencies are set by a loop filter. A second order loop is used to acquire the frequency and phase jitter within an acceptable range. Once within this range, a first order loop is used to lock the amplitude to the input signal. The amplitude and phase values are subtracted from the incoming signal so that a new error may be calculated. In the preferred embodiment, the jitter tracker of the present invention is implemented in a digital signal processor. The jitter tracker of the preferred embodiment of the present invention comprises two filter loops. The first loop is used to generate the magnitude of the jitter error. The second loop generates the phase of the jitter error. The input to the jitter tracker is the quadrature portion of a normalized error term. This quadrature portion is multiplied by the cosine of the output of the error loops to generate the magnitude of the error signal. This term is multiplied by a scaling factor and is then integrated to generate a magnitude error term. The quadrature portion of the normalized error signal is multiplied in the second loop by the sine of the loop output. This phase error signal is coupled to a first order filter within a range in the preferred embodiment of plus or minus 10 Hz from a 55 Hz nominal frequency. The output of this first filter is multiplied by nominal 55 Hz vector and integrated to produce a phase error output. The real portion of this phase error signal is generated and combined with the magnitude error to produce a jitter correction factor for use in the receive channel circuitry.
摘要翻译：本发明的抖动跟踪器使用决策误差信号作为反馈回路的输入。误差信号被滤波并耦合到以抖动跟踪频率范围的中心为中心的锁相环，其在优选实施例中为55Hz。频率宽度和中心轨道和锁定频率由环路滤波器设置。使用二阶环路来获取可接受范围内的频率和相位抖动。一旦在该范围内，使用一阶循环将幅度锁定到输入信号。从输入信号中减去振幅和相位值，从而可以计算新的误差。在优选实施例中，本发明的抖动跟踪器在数字信号处理器中实现。本发明的优选实施例的抖动跟踪器包括两个滤波器回路。第一个循环用于产生抖动误差的大小。第二个循环产生抖动误差的相位。抖动跟踪器的输入是归一化误差项的正交部分。该正交部分乘以误差环的输出的余弦以产生误差信号的幅度。该项乘以缩放因子，然后被积分以产生幅度误差项。归一化误差信号的正交部分在第二个循环中乘以循环输出的正弦。该相位误差信号在55Hz额定频率的正或负10Hz的优选实施例的范围内耦合到一阶滤波器。该第一个滤波器的输出乘以标称的55 Hz矢量并积分以产生相位误差输出。该相位误差信号的实际部分被产生并与幅度误差组合以产生在接收信道电路中使用的抖动校正因子。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式