公开(公告)号：US07796064B2

公开(公告)日：2010-09-14

申请号：US12215772

申请日：2008-06-30

Applicant: Kyung-Hoon Kim ,  Dae-Han Kwon ,  Chang-Kyu Choi ,  Taek-Sang Song

Inventor： Kyung-Hoon Kim ,  Dae-Han Kwon ,  Chang-Kyu Choi ,  Taek-Sang Song

IPC: H03M9/00

CPC classification number: H03M9/00

Abstract: A parallel-to-serial converter includes a data input unit configured to receive a plurality of parallel data by using a plurality of clock signals having different phases, and a parallel-to-serial conversion unit configured to sequentially select and output an output signal of the data input unit by using a plurality of clock signals having a predetermined phase difference from the plurality of clock signals used in the data input unit.

Abstract translation: 并行转换器包括：数据输入单元，被配置为通过使用具有不同相位的多个时钟信号来接收多个并行数据;以及并行到串行转换单元，被配置为顺序地选择和输出 数据输入单元通过使用与数据输入单元中使用的多个时钟信号具有预定相位差的多个时钟信号。

公开(公告)号：US07772878B2

公开(公告)日：2010-08-10

申请号：US12346816

申请日：2008-12-30

Applicant: Chang-Kyu Choi

Inventor： Chang-Kyu Choi

IPC: H03K19/003

CPC classification number: H01C13/02 ,  H01C1/16 ,  H03K19/0005

Abstract: A parallel resistor circuit that can reduce an error of a resistance value, an on-die termination having the same, and a semiconductor device having the on-die termination device. The semiconductor memory device includes a calibration circuit configured to pull up or pull down a predetermined node and compare a voltage of the predetermined node with a reference voltage to generate calibration codes, by using parallel resistor units that are turned on or off in response to the calibration codes. An output driver is configured to terminate a data output node to a pull-up or pull-down level to output data, by using the parallel resistor units. At least one of the parallel resistor units having at least two resistivities includes resistors with different resistivities connected to each other in parallel.

Abstract translation: 一种可以减小电阻值误差的并联电阻电路，具有该电阻值的片上端接和具有片上端接装置的半导体器件。 半导体存储器件包括校准电路，其被配置为上拉或下拉预定节点并且将预定节点的电压与参考电压进行比较以产生校准代码，通过使用响应于 校准码。 输出驱动器被配置为通过使用并联电阻器单元将数据输出节点终止到上拉或下拉电平以输出数据。 具有至少两个电阻率的并联电阻器单元中的至少一个包括具有彼此并联连接的不同电阻率的电阻器。

公开(公告)号：US20100103018A1

公开(公告)日：2010-04-29

申请号：US12566397

申请日：2009-09-24

Applicant: HYUNG-MIN YOON ,  CHANG-KYU CHOI

Inventor： HYUNG-MIN YOON ,  CHANG-KYU CHOI

IPC: H04L17/02

CPC classification number: G06F17/30876

Abstract: Data transmission apparatus and method thereof, and data reception apparatus and method thereof. Input data is encoded into a plurality of visual codes according to a visual code type. The visual code type includes a sequential type requiring sequential transmission and a nonsequential type not requiring sequential transmission. The sequential visual code includes start code, data code, and end code, and is displayed sequentially. The nonsequential visual code is displayed nonsequentially.

Abstract translation: 数据发送装置及其方法以及数据接收装置及其方法。 输入数据根据视觉代码类型被编码成多个视觉代码。 可视代码类型包括需要顺序传输的顺序类型和不需要顺序传输的非顺序类型。 顺序可视代码包括开始代码，数据代码和结束代码，并依次显示。 非顺序视觉代码无后续显示。

公开(公告)号：US07567678B2

公开(公告)日：2009-07-28

申请号：US10836207

申请日：2004-05-03

Applicant: Dong-geon Kong ,  Chang-kyu Choi ,  Seok-won Bang ,  Bon-young Lee

Inventor： Dong-geon Kong ,  Chang-kyu Choi ,  Seok-won Bang ,  Bon-young Lee

IPC: H04R3/00

CPC classification number: G10L21/0208 ,  G10L2021/02166 ,  H04R1/406 ,  H04R3/005 ,  H04R2201/401 ,  H04R2201/403

Abstract: A microphone array system including an input unit to receive sound signals using a plurality of microphones; a frequency splitter splitting each sound signal received into a plurality of narrowband signals; an average spatial covariance matrix estimator using spatial smoothing to obtain a spatial covariance matrix for each frequency component of the sound signal, by which spatial covariance matrices for a plurality of virtual sub-arrays, which are configured in the plurality of microphones, are obtained with respect to each frequency component of the sound signal and an average spatial covariance matrix is calculated; a signal source location detector to detect an incidence angle of the sound signal according to the average spatial covariance matrix calculated; a signal distortion compensator to calculates a weight for each frequency component of the sound signal based on the incidence angle of the sound signal and multiply the calculated weight by each frequency component.

Abstract translation: 一种麦克风阵列系统，包括使用多个麦克风接收声音信号的输入单元; 将接收到的每个声音信号分成多个窄带信号的分频器; 使用空间平滑来获得声音信号的每个频率分量的空间协方差矩阵的平均空间协方差矩阵估计器，通过该平均空间协方差矩阵获得在多个麦克风中配置的多个虚拟子阵列的空间协方差矩阵， 计算声音信号的每个频率分量和平均空间协方差矩阵; 信号源位置检测器，用于根据所计算的平均空间协方差矩阵来检测声音信号的入射角; 信号失真补偿器，用于基于声音信号的入射角来计算声音信号的每个频率分量的权重，并将计算出的权重乘以每个频率分量。