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    • 36. 发明授权
    • System and associated method for the synchronization and control of
multiplexed payloads over a telecommunications network
    • 用于通过电信网络同步和控制多路复用有效载荷的系统和相关方法
    • US6167062A
    • 2000-12-26
    • US017131
    • 1998-02-02
    • Paul C. HersheyCharles W. K. GrittonJeffrey A. Noel
    • Paul C. HersheyCharles W. K. GrittonJeffrey A. Noel
    • A63F3/02A63F3/04A63F9/00A63F11/00H04J3/06H04J3/07H04J3/16H04L12/64G06F15/16
    • A63F3/0423A63F2003/00208A63F2011/0018A63F2250/1063H04J3/0685H04J3/07H04J3/1611H04L2012/6459Y10S370/907
    • A system and associated method for the synchronization and control of multiplexed payloads over a telecommunications network wherein the asynchronous timing relationships between multiplexed payloads having varied points of origin are retained subsequent to signal processing of the payloads for further transmission to a destination point. System modules 22 include a network interface section 30, a synchronization, multiplexing and control (SMC) section 50, and a processing section 110. The SMC section 50 includes network interface bus circuitry, payload segmentation and re-assembly circuitry, control and management memory and related circuitry, payload re-assembly circuitry, and processor bus interface circuitry. The processing section of module 22 provides device for data compression, echo cancellation, error correction coding, or voice and data encryption/decryption. The module 22 is dynamically configured through a software management and control interface. The software permits dynamic loading of module 22 control logic and provides inband interpretation of performance statistics. Differing sets of control parameters are supplied to the module 22 as dictated by the interpretation of network performance parameters, or through operator supplied modifications. Operator modifications are preferably facilitated through an attached GUI (Graphical User Interface) and associated input devices such as a keyboard and/or mouse.
    • 一种用于通过电信网络同步和控制多路复用有效载荷的系统和相关方法,其中在有效载荷的信号处理之后保留具有不同原点的多路复用有效载荷之间的异步定时关系,以进一步传输到目的地点。 系统模块22包括网络接口部分30,同步,多路复用和控制(SMC)部分50以及处理部分110.SMC部分50包括网络接口总线电路,有效载荷分段和重新组装电路,控制和管理存储器 以及相关电路,有效载荷重组电路和处理器总线接口电路。 模块22的处理部分提供用于数据压缩,回波消除,纠错编码或语音和数据加密/解密的装置。 模块22通过软件管理和控制接口进行动态配置。 该软件允许模块22控制逻辑的动态加载,并提供性能统计的带内解释。 根据网络性能参数的解释或通过操作员提供的修改,控制参数的不同组合被提供给模块22。 优选地通过附加的GUI(图形用户界面)和相关联的输入设备(诸如键盘和/或鼠标)来促进操作者修改。
    • 38. 发明授权
    • Adaptive filter update normalization
    • 自适应滤波器更新归一化
    • US4468640A
    • 1984-08-28
    • US393122
    • 1982-06-28
    • Charles W. K. Gritton
    • Charles W. K. Gritton
    • H03H21/00H03H15/00
    • H03H21/0012
    • Loop gain normalization is employed in adaptive filters to control weighting of the filter characteristic updates in order to converge properly to a desired filter characteristic. Filter instability is avoided during intervals that transient or other rapidly pulsating signals are received or inputted by normalizing the update gain with a representation of a so-called fast attack estimate of a prescribed characteristic of the input signal. In one embodiment the fast attack estimate is the maximum of a plurality of power estimates generated from a corresponding plurality of subsets of amplitude samples of the received signal. In another embodiment, the maximum of the magnitude representations of the input signal samples is modified to represent the fast attack power estimate of the received signal.
    • 在自适应滤波器中采用环路增益归一化来控制滤波器特征更新的权重,以便适当地收敛到期望的滤波器特征。 在通过用所谓的输入信号的规定特性的快速攻击估计的表示规范化更新增益来接收或输入瞬时或其它快速脉动信号的间隔期间避免滤波器不稳定性。 在一个实施例中,快速攻击估计是从接收到的信号的相应多个振幅样本子集产生的多个功率估计的最大值。 在另一个实施例中,输入信号样本的幅度表示的最大值被修改以表示接收信号的快速攻击功率估计。