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    • 1. 发明授权
    • Method and apparatus for dynamically reprogramming remote autonomous agents
    • 用于动态重新编程远程自主代理的方法和装置
    • US06757587B1
    • 2004-06-29
    • US10408056
    • 2003-04-04
    • James D. EnglishChu-Yin ChangBradley L. Williams
    • James D. EnglishChu-Yin ChangBradley L. Williams
    • G06F1900
    • B25J9/1656G05B2219/32142G05B2219/33125G05B2219/45083Y02P90/185Y10T74/16
    • An apparatus and associated method, the apparatus comprising a controlled element (10), such as a robotic manipulator, and a dynamically updatable control system (11). The control system (11) uses a control system equation (eq. (1)) to determine control signals (dq/dt) for controlling the controlled element (1) given any required inputs (q, V) to the control system equation (eq. (1)). The control system (11) is dynamically updatable in that in response to a script file indicating a code structure (11d) preferably having linked nodes (12a 13a-c) and representing at least some components (W,F,&agr;,&bgr;) of the control system equation (eq. (1)), the control system (11) creates the code structure (11d), at run-time, and does so such that the nodes (12a 13a-c) can be queried (i.e. are executable logic) to provide values for at least some components (W,F,&agr;,&bgr;) of the control system equation (eq. (1)).
    • 一种装置和相关联的方法,所述装置包括诸如机器人操纵器的受控元件(10)和可动态更新的控制系统(11)。 控制系统(11)使用控制系统方程式(等式(1))来确定用于控制控制元件(1)的控制信号(dq / dt),给出控制系统方程式(q,V)的任何所需输入(q,V) (1))。 控制系统(11)是动态可更新的,其中响应于指示代码结构(11d)的脚本文件,其优选地具有链接节点(12a 13a-c)并且表示至少一些组件(W,F,α,β) 控制系统方程(等式(1)),控制系统(11)在运行时创建代码结构(11d),并且这样做使得可以查询节点(12a 13a-c)(即, 可执行逻辑)来提供控制系统方程(等式(1))的至少一些组件(W,F,α,β)的值。
    • 6. 发明授权
    • Amplitude and phase error normalization of subcarrier generator
    • 副载波发生器的幅度和相位误差归一化
    • US5489879A
    • 1996-02-06
    • US389762
    • 1995-02-16
    • James D. English
    • James D. English
    • H04L27/00H04H20/34H04L27/20H03C3/00
    • H04H20/34
    • A subcarrier signal generator includes a finite impulse response (FIR) filter responsive to selected FIR coefficients. A first set of FIR coefficients represents an ideal subcarrier shape and center frequency. A calibration step monitors the resulting subcarrier signal and produces a new set of FIR coefficients corresponding generally to the ideal subcarrier signal shape and center frequency, but predistorted according to the compliment of error detected in the actual subcarrier signal. By then loading the new set of FIR coefficients and operating the subcarrier generator, frequency-dependent distortions in the output stage of the subcarrier generator cancel predistortion reflected in the new FIR coefficients. As a result, a high quality subcarrier signal results without use of expensive output stage devices in the subcarrier signal generator.
    • 子载波信号发生器包括响应于所选FIR系数的有限脉冲响应(FIR)滤波器。 第一组FIR系数表示理想的副载波形状和中心频率。 校准步骤监视所得到的副载波信号,并产生一组通常对应于理想副载波信号形状和中心频率的FIR系数,但是根据在实际副载波信号中检测到的误差的补码进行预失真。 然后通过加载新的FIR系数集合并操作子载波发生器,子载波发生器的输出级中的频率相关失真消除了在新的FIR系数中反映的预失真。 结果,在副载波信号发生器中,没有使用昂贵的输出级装置,导致高质量的副载波信号。
    • 8. 发明授权
    • Amplitude compensated variable bandwidth filter
    • 幅度补偿可变带宽滤波器
    • US4568886A
    • 1986-02-04
    • US740380
    • 1985-06-03
    • James D. English
    • James D. English
    • H03H7/01H03G5/10H03H7/12H03H11/12H03F3/04
    • H03G5/10H03H11/1213
    • A constant amplitude, variable-bandwidth filter is provided having a variable resistor and a high-Q passive filter cascaded between a pair of amplifiers. The input amplifier having a low output impedance and the output amplifier having a low input impedance. As the resistance of the variable resistor is varied, the Q of the system varies and thus its bandwidth. The gain of the system also varies as the variable resistor is varied. To compensate for the gain variation, a current, equivalent to the value of the output voltage of the input amplifier divided by the value of the equivalent series resistance of the high-Q passive filter, is inserted at the node where the variable resistor and the high-Q passive filter are coupled one to the other. This results in a constant current at resonance being conducted by the high-Q passive filter, independent of the selected overall bandwidth of the filter.
    • 提供了恒定幅度可变带宽滤波器,其具有级联在一对放大器之间的可变电阻器和高Q无源滤波器。 具有低输出阻抗的输入放大器和具有低输入阻抗的输出放大器。 随着可变电阻的电阻变化,系统的Q值变化,从而带宽。 系统的增益也随着可变电阻的变化而变化。 为了补偿增益变化,将等效于输入放大器的输出电压值除以高Q无源滤波器的等效串联电阻值的电流插入可变电阻器和 高Q无源滤波器耦合到另一个。 这导致高Q无源滤波器进行谐振时的恒定电流,与滤波器的选定总带宽无关。
    • 10. 发明授权
    • Adaptive automatic antenna tuning method and apparatus
    • 自适应自适应天线调谐方法及装置
    • US5483688A
    • 1996-01-09
    • US7443
    • 1993-01-22
    • James D. EnglishBruce C. Nepple
    • James D. EnglishBruce C. Nepple
    • H01Q3/26H01Q7/00H04B1/18
    • H01Q7/005H01Q3/2605H04B1/18
    • An improved method and apparatus for automatically tuning an antenna includes adaptive antenna tuning based on a current radio reception frequency and on prior antenna tuning cycles to establish a predictor value. The predictor value establishes an antenna tuning voltage sub-range most likely to contain the optimum antenna tuning voltage, but is a smaller range than the full antenna tuning voltage range. The antenna tuning voltage sub-range is then traversed while monitoring a signal strength indicator to identify an antenna tuning voltage providing optimum tuning conditions. Because only a sub-range of the full antenna tuning voltage range need be traversed, by virtue of the predictor value, relatively small increments in antenna tuning voltage may be used in traversing this sub-range. As a result, the execution time and accuracy of the antenna tuning method of the present invention is improved relative to prior automatic antenna tuning methods.
    • 用于自动调谐天线的改进的方法和装置包括基于当前无线电接收频率的自适应天线调谐和用于建立预测值的先前天线调谐周期。 预测值建立最有可能包含最佳天线调谐电压的天线调谐电压子范围,但是距离全天线调谐电压范围更小的范围。 然后在监视信号强度指示器的同时遍历天线调谐电压子范围,以识别提供最佳调谐条件的天线调谐电压。 由于仅需要遍历全天线调谐电压范围的子范围,所以借助于预测值,天线调谐电压的相对较小的增量可用于遍历该子范围。 结果,相对于现有的自动天线调谐方法,本发明的天线调谐方法的执行时间和精度得到改善。