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    • 17. 发明授权
    • Method and apparatus for evaluating effects of switching noise in digital and analog circuitry
    • 用于评估数字和模拟电路中开关噪声的影响的方法和装置
    • US06668333B1
    • 2003-12-23
    • US09515490
    • 2000-02-29
    • Alper DemirPeter Feldman
    • Alper DemirPeter Feldman
    • G06F104
    • G06F17/5036
    • The present invention is for a method and apparatus for analyzing the effect of a plurality of noise sources in a circuit, wherein each one of the noise sources is associated with a discrete stochastic process defined on a state-set of Markov chains. Each discrete stochastic process is modulated with a set of continuous signals that represents the noise generated by the corresponding noise source at each noise generating event. A spectral power density of the signals resulting from the modulation is computed and transferred through a linear system that represents a platform that supports the circuit. The output of the linear system comprises the spectral power density of interference signals at the points of interest and their correlations.
    • 本发明是用于分析电路中多个噪声源的影响的方法和装置,其中每个噪声源与在马尔可夫链状态集上定义的离散随机过程相关联。 每个离散随机过程由一组连续信号调制,这些连续信号表示在每个噪声产生事件时由相应的噪声源产生的噪声。 计算由调制产生的信号的频谱功率密度,并通过表示支持电路的平台的线性系统传送。 线性系统的输出包括感兴趣点处的干扰信号的频谱功率密度及其相关性。
    • 19. 发明授权
    • Autodialer with pin feature
    • 自动拨号器带引脚功能
    • US5343519A
    • 1994-08-30
    • US117893
    • 1993-09-07
    • Peter Feldman
    • Peter Feldman
    • H04M1/275H04M1/00H04M1/26
    • H04M1/275Y10S379/903
    • An autodialer with code feature, has a credit card sized carrier which contains; an audio transducer mounted to the carrier and activatable to produce tones that are comprehensible as discreet numerals and symbols by a touch-tone dialing system. A memory in the carrier stores a first sequence of numbers representing a telephone number and a second sequence of numbers representing a personal code. A control operatively connected to the memory and to the audio transducer, reads the first and second sequence of numbers and drives the audio transducer to generate tones corresponding to each number in each number sequence. A power supply mounted in the carrier is connected to the control, the memory and audio transducer for powering the control, memory and audio transducer. A first activator switch is connect to the control for controlling the control to read the first sequence of numbers only and generate tones in the audio transducer corresponding to the first sequence of numbers. A second activator switch spaced and separator from said first activator switch, is connected to the control for controlling the control to select the second sequence of numbers only and to activate the audio transducer according to the second sequence of numbers.
    • 具有代码功能的自动拨号器,具有包含信用卡大小的载体; 一个安装在载体上的音频传感器,可以通过一个按键式拨号系统产生可理解为谨慎的数字和符号的音调。 运营商中的存储器存储表示电话号码的第一个数字序列和表示个人代码的第二个数字序列。 可操作地连接到存储器和音频换能器的控制器读取第一和第二数字序列并驱动音频换能器以产生与每个数字序列中的每个号码对应的音调。 安装在载体中的电源连接到控制器,存储器和音频传感器,用于为控制,存储器和音频传感器供电。 第一激活器开关连接到控制器,用于控制控制以仅读取第一序列序列,并且在与第一序列序列相对应的音频换能器中产生音调。 与所述第一激活器开关间隔开的第二激活器开关和分离器连接到控制器,用于控制控制以仅选择第二数目序列,并根据第二序列序列激活音频换能器。