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    • 1. 发明授权
    • Microphone array with daisy-chain summation
    • 带菊花链求和的麦克风阵列
    • US09479866B2
    • 2016-10-25
    • US13428496
    • 2012-03-23
    • Robert AdamsDavid HossackBenjamin VigodaEric NestlerMira Wilczek
    • Robert AdamsDavid HossackBenjamin VigodaEric NestlerMira Wilczek
    • H04R3/00
    • H04R3/005H04R2499/13
    • Microphone stages in a microphone array may be coupled together in a daisy chain. Each stage may include a microphone, an analog to digital converter, a decimation unit, a receiver, an adder, and a transmitter. The converter may convert analog audio microphone signals into digital codes that may be decimated. The adder may add decimated digital codes in each stage to a cumulative sum of decimated digital codes from prior stages. This new sum may be transmitted to the next microphone stage, where the adder may add the decimated digital codes from that stage to the cumulative sum. A serial interface may be used to connect the transmitters and receivers of each of the stages. The serial interface may be used to transmit the cumulative sum of decimated digital codes between the stages. The serial interface may also be used to transmit configuration data between the stages.
    • 麦克风阵列中的麦克风级可以以菊花链耦合在一起。 每个阶段可以包括麦克风,模数转换器,抽取单元,接收器,加法器和发射器。 转换器可将模拟音频麦克风信号转换为可能被抽取的数字代码。 加法器可以将每个级中的抽取的数字代码添加到来自前一级的抽取的数字代码的累积和。 这个新的和可以传送到下一个麦克风阶段,其中加法器可以将从该阶段抽取的数字代码添加到累积和。 可以使用串行接口连接每个级的发射机和接收机。 串行接口可以用于在级之间传送抽取的数字代码的累加和。 串行接口也可用于在各个级之间传输配置数据。
    • 4. 发明授权
    • Nonlinear dynamic system for spread spectrum code generation and acquisition
    • 用于扩频码生成和采集的非线性动态系统
    • US06724805B1
    • 2004-04-20
    • US09713644
    • 2000-11-15
    • Benjamin Vigoda
    • Benjamin Vigoda
    • H04B169
    • H04B1/7075
    • Nonlinear dynamic systems for generating and acquiring a spread spectrum signal pseudo-random noise (PN) signal are disclosed. An actuating signal is delayed by a first and second period to produce delayed actuating signals. A continuous, nonlinear function is applied to input that corresponds to the delayed actuating signals to produce an output signal. The function has values that correspond to the binary integer values of the mod 2 addition function of a linear feedback shift register, and a non-zero slope at those values. The output signal becomes a PN signal over time when it is fed back to the actuating signal. The output signal synchronizes with a spread spectrum reference input signal when it is superposed on the reference input signal to produce the actuating signal. The system may be incorporated into a transmitter or a receiver, either of which may be part of a larger communication system.
    • 公开了用于产生和获取扩频信号伪随机噪声(PN)信号的非线性动态系统。 致动信号被延迟第一和第二周期以产生延迟的致动信号。 连续的非线性函数被应用于对应于延迟的致动信号的输入以产生输出信号。 该函数具有对应于线性反馈移位寄存器的mod 2加法函数的二进制整数值以及在这些值的非零斜率的值。 当输出信号反馈到启动信号时,输出信号随时间变为PN信号。 当输出信号叠加在参考输入信号上时,输出信号与扩频参考输入信号同步以产生致动信号。 该系统可以并入到发射机或接收机中,其中任何一个可以是更大的通信系统的一部分。
    • 7. 发明授权
    • Implementation of factor graphs
    • 因子图的实现
    • US08627246B2
    • 2014-01-07
    • US13006060
    • 2011-01-13
    • Shawn HersheyBenjamin Vigoda
    • Shawn HersheyBenjamin Vigoda
    • G06F17/50
    • G06F17/5027
    • The process of implementing a belief propagation network in software and/or hardware can begin with a factor-graph-designer who designs a factor graph that implements that network. A development system provides a user with a way to specify a factor graph at a high or abstract level, and then solve the factor graph, or make an instance of the factor graph in software and/or hardware based on the specification. Factor graphs enable designers to create a graphical model of complicated belief propagation networks such as Markov chains, hidden Markov models, and Bayesian networks.
    • 在软件和/或硬件中实现信任传播网络的过程可以从设计实现该网络的因子图的因子图设计者开始。 开发系统为用户提供了一种以高或抽象级别指定因子图的方式,然后根据规范解决因子图,或者在软件和/或硬件中制作因子图的实例。 因子图使设计人员能够创建一个复杂信念传播网络的图形模型,如马尔科夫链,隐马尔可夫模型和贝叶斯网络。