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    • 2. 发明授权
    • Method and computer program for identifying a transition in a phase-shift keying or frequency-shift keying signal
    • 用于识别相移键控或频移键控信号中的转换的方法和计算机程序
    • US08149975B2
    • 2012-04-03
    • US12559207
    • 2009-09-14
    • Stephen Ha
    • Stephen Ha
    • H04L7/00
    • H04L27/2337H04L27/144H04L27/1563
    • A system for identifying at least one phase transition in a phase-shift keying signal comprising a plurality of data samples corresponding to phase values. The system comprises a memory operable to store computing device executable instructions; and a computing device. The computing device is operable to generate a first falling edge region function for each data sample; generate a first rising edge function for each data sample; generate a first level function for each data sample; and generate a second falling edge function for each data sample. The second falling edge function equals the first falling edge function if the first falling edge function is greater than the first rising edge function and the first level function, and the second falling edge function equals zero.
    • 一种用于识别包括对应于相位值的多个数据样本的相移键控信号中的至少一个相变的系统。 该系统包括可操作以存储计算设备可执行指令的存储器; 和计算设备。 所述计算装置可操作以产生每个数据样本的第一下降沿区域函数; 为每个数据样本生成第一个上升沿函数; 为每个数据样本生成一级函数; 并为每个数据样本生成第二个下降沿函数。 如果第一个下降沿功能大于第一个上升沿功能和第一个上升沿功能,而第二个下降沿功能等于零,则第二个下降沿功能等于第一个下降沿功能。
    • 4. 发明申请
    • SYSTEM FOR CONJUGATE GRADIENT LINEAR ITERATIVE SOLVERS
    • 用于并联梯度线性迭代解算器的系统
    • US20110010409A1
    • 2011-01-13
    • US12498800
    • 2009-07-07
    • Matthew P. DeLaquilDeepak PrasannaAntone L. Kusmanoff
    • Matthew P. DeLaquilDeepak PrasannaAntone L. Kusmanoff
    • G06F7/38G06F7/32
    • G06F17/12
    • A system for a conjugate gradient iterative linear solver that calculates the solution to a matrix equation comprises a plurality of gamma processing elements, a plurality of direction vector processing elements, a plurality of x-vector processing elements, an alpha processing element, and a beta processing element. The gamma processing elements may receive an A-matrix and a direction vector, and may calculate a q-vector and a gamma scalar. The direction vector processing elements may receive a beta scalar and a residual vector, and may calculate the direction vector. The x-vector processing elements may receive an alpha scalar, the direction vector, and the q-vector, and may calculate an x-vector and the residual vector. The alpha processing element may receive the gamma scalar and a delta scalar, and may calculate the alpha scalar. The beta processing element may receive the residual vector, and may calculate the delta scalar and the beta scalar.
    • 用于计算矩阵方程的解的共轭梯度迭代线性求解器的系统包括多个伽马处理元件,多个方向向量处理元件,多个x向量处理元件,α处理元件和β 处理元件。 伽马处理元件可以接收A矩阵和方向向量,并且可以计算q向量和伽马标量。 方向向量处理元件可以接收β标量和残差向量,并且可以计算方向向量。 x向量处理元件可以接收α标量,方向向量和q向量,并且可以计算x向量和残差向量。 阿尔法处理元件可以接收伽马标量和三角形标量,并且可以计算阿尔法标量。 β处理单元可以接收剩余向量,并且可以计算Δ标量和β标量。
    • 5. 发明申请
    • SYSTEMS AND METHODS FOR SENDING DATA PACKETS BETWEEN MULTIPLE FPGA DEVICES
    • 用于发送多个FPGA器件之间的数据包的系统和方法
    • US20100157854A1
    • 2010-06-24
    • US12340094
    • 2008-12-19
    • Joshua D. AndersonScott M. BurkartMatthew P. DeLaquilDeepak Prasanna
    • Joshua D. AndersonScott M. BurkartMatthew P. DeLaquilDeepak Prasanna
    • H04L12/56H04L29/02H04L5/14
    • H04L45/00H04L49/10H04L49/25
    • Application Specific Integrated Circuit (“ASIC”) devices, such as Field Programmable Gate Arrays (“FPGAs”), may be interconnected using serial I/O connections, such as high speed multi-gigabit serial transceiver (“MGT”) connections. For example, serial I/O connections may be employed to interconnect a pair of ASICs to create a high bandwidth, low signal count connection, and in a manner so that any given pair of multiple ASIC devices on a single circuit card may communicate with each other through no more than one serial data communication link connection step. A reconfigurable hardware architecture (“RHA”) may be configured to include a communications infrastructure that uses a high-bandwidth packet router to establish standard communications protocols between multiple interfaces and/or multiple devices that may be present on a single circuit card. Dynamically-sized data packets, sized in accordance with the amount of data ready to be sent, are transferred between the devices and/or interfaces on the card.
    • 诸如现场可编程门阵列(“FPGA”)的专用集成电路(“ASIC”)器件可以使用诸如高速多吉比特串行收发器(“MGT”)连接的串行I / O连接进行互连。 例如,可以采用串行I / O连接来互连一对ASIC以产生高带宽,低信号计数连接,并且以使得单个电路卡上的任何给定的一对多个ASIC器件可以与每个ASIC通信 其他通过不超过一个串行数据通信链路连接步骤。 可重新配置的硬件架构(“RHA”)可以被配置为包括使用高带宽分组路由器的通信基础设施,以在可能存在于单个电路卡上的多个接口和/或多个设备之间建立标准通信协议。 根据准备发送的数据量大小的动态尺寸数据包在卡上的设备和/或接口之间传送。
    • 7. 发明申请
    • CODED VIRTUAL CHANNEL NETWORK
    • 编码虚拟通道网络
    • US20090175158A1
    • 2009-07-09
    • US11969008
    • 2008-01-03
    • Kenneth Shamburger
    • Kenneth Shamburger
    • H04J11/00
    • H04J13/004H04B1/69
    • A data coding/decoding system for use with a plurality of users includes an encoder, a transmitter, a receiver, and a decoder. The encoder encodes data to be transmitted over a shared physical transmission medium using an orthogonal or convolution code associated with a receiving user. The transmitter transmits the encoded data. Generally, data may be transmitted simultaneously by a plurality of users. The receiver receives a stream of encoded data and forwards it to the decoder, which decodes it based on the orthogonal or convolution code of the receiving user.
    • 用于多个用户的数据编码/解码系统包括编码器,发射机,接收机和解码器。 编码器使用与接收用户相关联的正交或卷积码对通过共享物理传输介质进行传输的数据进行编码。 发射机发送编码数据。 通常,数据可以由多个用户同时发送。 接收器接收编码数据流并将其转发到解码器,解码器基于接收用户的正交或卷积码进行解码。
    • 8. 发明申请
    • AUTOMATIC BNE SEED CALCULATOR
    • 自动BNE种子计算器
    • US20090171632A1
    • 2009-07-02
    • US11967404
    • 2007-12-31
    • Mark Allen ChiversSujit Ravindran
    • Mark Allen ChiversSujit Ravindran
    • G06F17/11
    • H03K19/177
    • An automatic background noise estimator (BNE) seed calculator for determining a starting point for a BNE circuit which tracks the noise floor received by a receiver. The BNE seed calculator may sample a plurality of data points from the receiver and calculate the magnitude of each point. The seed calculator may then determine the peak magnitude value, a plurality of mean values, and the variance of the sampled points. A plurality of lookup tables are used to compare the peak, mean, and variance values with simulated peak, mean, and variance values to estimate the noise floor level of the actual signal and use that to determine the optimum BNE seed value. Simulation software such as MATLAB is used to develop the lookup tables by simulating peak, mean, and variance values based on a plurality of signal-to-noise ratios (SNR).
    • 一种自动背景噪声估计器(BNE)种子计算器,用于确定跟踪由接收机接收的噪声基底的BNE电路的起始点。 BNE种子计算器可以从接收器采样多个数据点并计算每个点的幅度。 种子计算器然后可以确定峰值幅度值,多个平均值和采样点的方差。 使用多个查找表将峰值,平均值和方差值与模拟峰值,平均值和方差值进行比较,以估计实际信号的基底噪声水平,并使用它来确定最佳BNE种子值。 仿真软件如MATLAB用于通过基于多个信噪比(SNR)模拟峰值,平均值和方差值来开发查找表。
    • 9. 发明申请
    • MULTIPLE STREAM MULTIPLE RATE RESAMPLING COMPONENT
    • 多流程多速率重载组件
    • US20090168932A1
    • 2009-07-02
    • US11966590
    • 2007-12-28
    • Scott M. Fornero
    • Scott M. Fornero
    • H04B1/10
    • H04L25/05
    • A method of resampling a digital signal involves serially receiving a plurality of samples of said digital signal and applying a plurality of filter coefficients to a first subset of the plurality of samples to generate a first plurality of intermediate results and to a second subset of the samples to generate a second plurality of intermediate results. The first plurality of intermediate results is accumulated to generate a first resampled value, and the second plurality of intermediate results is accumulated to generate a second resampled value. Upon receipt, each signal sample may be used to update each of a plurality of running accumulation values and then discarded before receipt of a next signal sample. Furthermore, multiple signals may be resampled concurrently using a single filter path by multiplexing circuit components, such as memory blocks.
    • 重新采样数字信号的方法涉及串行地接收所述数字信号的多个样本,并将多个滤波器系数应用于多个采样的第一子集,以产生第一多个中间结果,并产生样本的第二子集 以产生第二多个中间结果。 累积第一多个中间结果以产生第一重采样值,并且累积第二多个中间结果以产生第二重采样值。 在接收时,每个信号样本可用于更新多个运行累加值中的每一个,然后在接收下一个信号样本之前被丢弃。 此外,可以通过复用诸如存储器块的电路组件,使用单个滤波器路径来同时重采样多个信号。
    • 10. 发明授权
    • Globally-convergent geo-location algorithm
    • 全球收敛地理位置算法
    • US08188919B2
    • 2012-05-29
    • US12485409
    • 2009-06-16
    • Michael T. GrabbeBryan Lloyd Westcott
    • Michael T. GrabbeBryan Lloyd Westcott
    • G01S3/02G01S1/08G01S5/04
    • G01S5/12G01S5/0205
    • A system and method for estimating a geolocation of a non-cooperative target using any reasonable target location estimate. Collectors may acquire actual signal measurements including a direction of arrival (DOA), a target range, a time difference of arrival (TDOA), a range rate, a range sum, and/or a frequency difference of arrival (FDOA). A processing device may receive the actual signal measurements and navigational data regarding the collectors. Then, the processing device may calculate an estimated target location as a solution to a nonlinear optimization problem where an objective function to be minimized is a weighted sum-of-squares of differences between the actual signal measurements and calculated values corresponding to signal measurements that theoretically should be produced for a particular target location. The algorithm used to solve this problem may be a globally convergent algorithm, such as a Levenberg-Marquardt algorithm.
    • 一种用于使用任何合理的目标位置估计来估计非合作目标的地理位置的系统和方法。 收集器可以获取包括到达方向(DOA),目标范围,到达时间差(TDOA),范围速率,范围和和/或到达频率差(FDOA)的实际信号测量。 处理设备可以接收关于收集器的实际信号测量和导航数据。 然后,处理装置可以将估计的目标位置计算为非线性优化问题的解决方案,其中要最小化的目标函数是实际信号测量值与理论上对应于信号测量值的计算值之间的加权平方和 应为特定目标地点生产。 用于解决这个问题的算法可能是全局收敛算法,如Levenberg-Marquardt算法。