Methods for message passing decoding using simultaneous memory accesses
    11.
    发明授权
    Methods for message passing decoding using simultaneous memory accesses 有权
    使用同步存储器访问的消息传递解码方法

    公开(公告)号:US07571375B2

    公开(公告)日:2009-08-04

    申请号:US11258459

    申请日:2005-10-25

    IPC分类号: H03M13/03

    摘要: Respective memory locations are assigned for respective edges linking processing nodes of a decoder comprising a plurality of processing nodes. The decoder is applied to a coded input signal to generate a decoded output signal, wherein edge values are iteratively retrieved from and provided to the memory locations such that multiple ones of the memory locations are simultaneously accessed in a processing node operation. The processing nodes may comprise variable nodes and check nodes and the edges comprise edges linking the variable and check nodes. The invention may be embodied as methods, apparatus and computer program products.

    摘要翻译: 针对链接包括多个处理节点的解码器的处理节点的相应边缘分配相应的存储器位置。 将解码器应用于编码输入信号以产生解码的输出信号,其中边缘值被迭代地从存储器位置检索并提供给存储器位置,使得在处理节点操作中同时访问多个存储器位置。 处理节点可以包括可变节点和校验节点,并且边缘包括链接变量和校验节点的边缘。 本发明可以体现为方法,装置和计算机程序产品。

    Test board of semiconductor tester having modified input/output printed circuit pattern and testing method using the same
    12.
    发明申请
    Test board of semiconductor tester having modified input/output printed circuit pattern and testing method using the same 审中-公开
    具有修改的输入/输出印刷电路图案的半导体测试仪测试板及使用其的测试方法

    公开(公告)号:US20060085715A1

    公开(公告)日:2006-04-20

    申请号:US11243053

    申请日:2005-10-03

    IPC分类号: G06F11/00

    摘要: A test board for a semiconductor device tester having a modified input/output printed circuit pattern and a testing method using the same are provided. In an embodiment, a modified input/output printed circuit pattern is formed and controlled by a test program, wherein the modified input/output printed circuit pattern is divided into a drive terminal and a comparator terminal, one of the terminals being connected to one input pin of a device under test (DUT) and the other being connected to an output pin of the DUT, unlike a typical input/output printed circuit pattern of the test board that is formed to be connected to one output pin of a DUT. Thus, it is possible to increase the number of devices under parallel test and to test semiconductor memory devices having larger capacity by using limited resources of the tester.

    摘要翻译: 提供了一种具有改进的输入/输出印刷电路图案的半导体器件测试器的测试板和使用其的测试方法。 在一个实施例中,修改的输入/输出印刷电路图案由测试程序形成和控制,其中修改的输入/输出印刷电路图案被分成驱动端子和比较器端子,其中一个端子连接到一个输入端 与被测设备(DUT)的引脚,另一个连接到DUT的输出引脚,与形成为连接到DUT的一个输出引脚的测试板的典型输入/输出印刷电路图案不同。 因此,可以增加并行测试下的器件数量,并且通过使用测试器的有限资源来测试具有较大容量的半导体存储器件。

    Echo canceller of ADSL system and training method thereof
    13.
    发明授权
    Echo canceller of ADSL system and training method thereof 失效
    ADSL系统回波消除器及其训练方法

    公开(公告)号:US07349482B2

    公开(公告)日:2008-03-25

    申请号:US10705451

    申请日:2003-11-10

    申请人: Yong-Woon Kim

    发明人: Yong-Woon Kim

    IPC分类号: H04K1/10 H04L27/28

    CPC分类号: H04B3/238 H04M11/062

    摘要: An echo cancellation circuit includes delay units at its input unit and output unit in order to adjust the delay caused by a FIFO. The delay times of the delay units are trained using a training signal, such the REVERB signal, that is a system initializing signal. In addition, an upstream pilot tone is used to tune the delay time. The performance of the echo cancellation circuit is optimized according to the device and the method described.

    摘要翻译: 回波消除电路在其输入单元和输出单元上包括延迟单元,以便调整由FIFO引起的延迟。 使用诸如系统初始化信号的REVERB信号的训练信号来训练延迟单元的延迟时间。 此外,使用上行导频音来调整延迟时间。 回波消除电路的性能根据设备和方法进行了优化。

    Decoders using fixed noise variance and methods of using the same
    14.
    发明申请
    Decoders using fixed noise variance and methods of using the same 审中-公开
    解码器使用固定噪声方差和使用方法相同

    公开(公告)号:US20070019752A1

    公开(公告)日:2007-01-25

    申请号:US11483986

    申请日:2006-07-10

    申请人: Yong-Woon Kim

    发明人: Yong-Woon Kim

    IPC分类号: H04K1/10 H04L27/06

    摘要: Decoders are provided including a data input unit configured to receive and store data. A noise variance judging unit is configured to select a fixed noise variance from a lookup table including at least one predetermined fixed noise variance. A log-likelihood ratio (LLR) calculating unit is configured to calculate an LLR based on the data and the selected fixed noise variance. A decoding unit is configured to perform a decode operation using the LLR to provide decoded data. Related methods are also provided herein.

    摘要翻译: 提供解码器,包括被配置为接收和存储数据的数据输入单元。 噪声方差判断单元被配置为从包括至少一个预定的固定噪声方差的查找表中选择固定噪声方差。 对数似然比(LLR)计算单元被配置为基于数据和所选择的固定噪声方差来计算LLR。 解码单元被配置为使用LLR执行解码操作以提供解码数据。 本文还提供了相关方法。

    Receiver and method thereof
    15.
    发明申请
    Receiver and method thereof 有权
    接收机及其方法

    公开(公告)号:US20060158366A1

    公开(公告)日:2006-07-20

    申请号:US11331226

    申请日:2006-01-13

    申请人: Yong-Woon Kim

    发明人: Yong-Woon Kim

    IPC分类号: H03M1/12

    CPC分类号: H04B1/28 H04B1/001

    摘要: A receiver and method thereof. The example receiver may include an analog-to-digital (ADC) converter for performing an over-sampling operation on a received signal to generate output data, the over-sampling operation based on a sampling frequency and an over-sampling coefficient and a fast fourier transform (FFT) calculating unit for performing a FFT on the output data of the ADC converter.

    摘要翻译: 接收机及其方法。 示例性接收机可以包括用于对接收信号执行过采样操作以产生输出数据的模数(ADC)转换器,基于采样频率和过采样系数的过采样操作以及快速 傅立叶变换(FFT)计算单元,用于对ADC转换器的输出数据执行FFT。

    METHOD AND APPARATUS FOR ALLOWING TRANSMISSION DELAY IN HOME AGENT OF MOBILE IP NETWORK
    16.
    发明申请
    METHOD AND APPARATUS FOR ALLOWING TRANSMISSION DELAY IN HOME AGENT OF MOBILE IP NETWORK 审中-公开
    在移动IP网络的家庭代理中允许传输延迟的方法和装置

    公开(公告)号:US20100254400A1

    公开(公告)日:2010-10-07

    申请号:US12743698

    申请日:2008-07-29

    IPC分类号: H04L12/54

    摘要: A method and apparatus for allowing transmission delay in a mobile Internet Protocol (IP) network is provided. The method of allowing transmission delay in a home agent of a mobile IP network, the method including: storing data in a mobile router when disconnection with the mobile router is sensed; and transmitting the stored data to the mobile router when reconnection with the mobile router is sensed.

    摘要翻译: 提供了一种用于允许移动因特网协议(IP)网络中的传输延迟的方法和装置。 一种允许移动IP网络的归属代理的传输延迟的方法,所述方法包括:当检测到与移动路由器断开连接时,将数据存储在移动路由器中; 并且当检测到与移动路由器重新连接时,将所存储的数据发送到移动路由器。

    Receiver and method thereof
    17.
    发明授权
    Receiver and method thereof 有权
    接收机及其方法

    公开(公告)号:US07427938B2

    公开(公告)日:2008-09-23

    申请号:US11331226

    申请日:2006-01-13

    申请人: Yong-Woon Kim

    发明人: Yong-Woon Kim

    IPC分类号: H03M1/12

    CPC分类号: H04B1/28 H04B1/001

    摘要: A receiver and method thereof. The example receiver may include an analog-to-digital (ADC) converter for performing an over-sampling operation on a received signal to generate output data, the over-sampling operation based on a sampling frequency and an over-sampling coefficient and a fast fourier transform (FFT) calculating unit for performing a FFT on the output data of the ADC converter.

    摘要翻译: 接收机及其方法。 示例性接收机可以包括用于对接收信号执行过采样操作以产生输出数据的模数(ADC)转换器,基于采样频率和过采样系数的过采样操作以及快速 傅立叶变换(FFT)计算单元,用于对ADC转换器的输出数据执行FFT。

    Methods for minimizing setup time by optimizing bit allocation in multi-channel communication system
    18.
    发明授权
    Methods for minimizing setup time by optimizing bit allocation in multi-channel communication system 失效
    通过优化多通道通信系统中的位分配来最小化建立时间的方法

    公开(公告)号:US07274743B2

    公开(公告)日:2007-09-25

    申请号:US10388117

    申请日:2003-03-13

    申请人: Yong-Woon Kim

    发明人: Yong-Woon Kim

    IPC分类号: H04L27/28

    CPC分类号: H04L27/2608

    摘要: Methods for bit allocation and power tuning for optimizing a setup time in a multi-channel communication system. In one aspect, a bit allocation method includes measuring a signal-to-noise ratio (SNR) of each subchannel of a channel, determining a greatest allocable bit number of each subchannel using the measured SNR of the subchannels, determining a sum of the greatest allocable bit numbers of the subchannels, and determining a difference between the sum of the greatest allocable bit numbers of the subchannels and a target bit number. The currently allocated bit numbers of one or more subchannels is adjusted until a sum of the currently allocated bit numbers is equal to the target bit number.

    摘要翻译: 用于优化多通道通信系统中的建立时间的位分配和功率调整的方法。 一方面,比特分配方法包括测量信道的每个子信道的信噪比(SNR),使用子信道的测量SNR确定每个子信道的最大可分配比特数,确定最大 子信道的可分配比特数,以及确定子信道的最大可分配比特数之和与目标比特数的差。 调整一个或多个子信道的当前分配的比特数,直到当前分配的比特数的总和等于目标比特数。

    Method for determining coefficients of an equalizer and apparatus for determining the same
    19.
    发明授权
    Method for determining coefficients of an equalizer and apparatus for determining the same 失效
    用于确定均衡器的系数的方法和用于确定均衡器的装置

    公开(公告)号:US07224725B2

    公开(公告)日:2007-05-29

    申请号:US10379851

    申请日:2003-03-05

    申请人: Yong-Woon Kim

    发明人: Yong-Woon Kim

    IPC分类号: H03H7/30

    摘要: A method for estimating a phase response for an upstream area in a channel is based on an extrapolation and, following forcible distortion of an amplitude response, coefficients of a time domain equalizer and coefficients of a channel target circuit are determined using a minimum MSE algorithm. When the cost function of a minimum MES is determined, the square of the coefficients of the time domain equalizer are included for determining the cost function in order to reduce the probability that the coefficients of the time domain equalizer diverge. A channel-shortening effect of the time domain equalizer is improved to reduce inter-symbol interference (ISI) and inter-channel interference (ICI). As a result, a signal to noise ratio (SNR) of a communication system is improved.

    摘要翻译: 用于估计信道中上游区域的相位响应的方法是基于外推的,并且在强制失真振幅响应之后,使用最小MSE算法来确定时域均衡器的系数和信道目标电路的系数。 当确定最小MES的成本函数时,包括时域均衡器的系数的平方,用于确定成本函数,以便降低时域均衡器的系数发散的概率。 提高时域均衡器的信道缩短效果,减少符号间干扰(ISI)和信道间干扰(ICI)。 结果,提高了通信系统的信噪比(SNR)。

    System used to test plurality of DUTs in parallel and method thereof
    20.
    发明授权
    System used to test plurality of DUTs in parallel and method thereof 失效
    用于并行测试多个DUT的系统及其方法

    公开(公告)号:US07012443B2

    公开(公告)日:2006-03-14

    申请号:US10779178

    申请日:2004-02-12

    IPC分类号: G01R31/26

    CPC分类号: G01R31/31926

    摘要: Provided is a system and method of testing a plurality of devices under test (DUTs) in parallel. The method includes preparing at least two DUTs having input/output signal pins connected in common to one input/output signal channel and having chip selection signal pins connected to a chip selection signal channel, which provides a chip selection signal to specify one output data among output data to be outputted through the commonly connected input/output channel. The method includes reading the outputted data specified by the chip selection signal through the commonly connected input/output signal channel from one of the devices under test selected by the chip selection signal.

    摘要翻译: 提供了并行测试多个待测器件(DUT)的系统和方法。 该方法包括至少准备两个DUT,它们具有共同连接到一个输入/输出信号通道的输入/输出信号引脚,并且具有连接到芯片选择信号通道的芯片选择信号引脚,其提供芯片选择信号以指定一个输出数据 输出数据通过公共连接的输入/输出通道输出。 该方法包括通过芯片选择信号所选择的被测器件之一通过公共连接的输入/输出信号通道读取由芯片选择信号指定的输出数据。