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    Obstruction-determining apparatus for preventing mobile robot from becoming obstructed and boundary-estimation method and medium using the obstruction-determining apparatus
    1.
    发明授权
    Obstruction-determining apparatus for preventing mobile robot from becoming obstructed and boundary-estimation method and medium using the obstruction-determining apparatus 失效
    用于防止移动机器人被阻挡的障碍物确定装置和使用障碍物确定装置的边界估计方法和介质

    公开(公告)号：US08521329B2

    公开(公告)日：2013-08-27

    申请号：US11898060

    申请日：2007-09-07

    申请人： Ji-young Park ,  Seok-won Bang ,  Eun-Young Choi

    发明人： Ji-young Park ,  Seok-won Bang ,  Eun-Young Choi

    IPC分类号： G05B19/418 ,  G06F19/00

    CPC分类号： G05D1/0227 ,  A47L11/4061 ,  A47L11/4072 ,  A47L2201/04

    摘要： An obstruction-determining apparatus for preventing a mobile robot from being obstructed in a niche and a boundary-estimation method and medium using the obstruction-determining apparatus are disclosed. More particularly, an obstruction-determining apparatus which can determine whether a mobile robot is obstructed in a niche, and enable a mobile robot to easily escape from an obstacle if the mobile robot is determined to be obstructed in the niche, and a boundary-estimation method and medium for estimating the boundaries of an obstacle with a niche using the obstruction-determining apparatus. The obstruction-determining apparatus includes a contact module which collides with an obstacle above the mobile robot, a contact-operating module which rotates or moves linearly as a result of the collision between the contact module and the obstacle, and a sensing module which detects the rotation or the linear movement of the contact-operating module and determines whether the mobile robot is obstructed in a niche.

    摘要翻译： 公开了一种用于防止移动机器人在利基中被阻碍的障碍物确定装置和使用障碍物确定装置的边界估计方法和介质。 更具体地，涉及一种障碍物判定装置，其能够判断移动机器人是否受到利基的阻碍，并且如果移动机器人被确定为在利基中被阻碍，则能够使移动机器人容易地从障碍物逃脱，并且边界估计 方法和介质，用于使用障碍物确定装置估计具有利基的障碍物的边界。 障碍物确定装置包括与移动机器人上方的障碍物相撞的接触模块，由于接触模块与障碍物之间的碰撞而线性旋转或移动的接触操作模块，以及检测模块 旋转或接触操作模块的线性移动，并确定移动机器人是否在利基中被阻挡。

    Obstruction-determining apparatus for preventing mobile robot from becoming obstructed and boundary-estimation method and medium using the obstruction-determining apparatus
    2.
    发明申请
    Obstruction-determining apparatus for preventing mobile robot from becoming obstructed and boundary-estimation method and medium using the obstruction-determining apparatus 失效
    用于防止移动机器人被阻挡的障碍物确定装置和使用障碍物确定装置的边界估计方法和介质

    公开(公告)号：US20080084284A1

    公开(公告)日：2008-04-10

    申请号：US11898060

    申请日：2007-09-07

    申请人： Ji-young Park ,  Seok-won Bang ,  Eun-Young Choi

    发明人： Ji-young Park ,  Seok-won Bang ,  Eun-Young Choi

    IPC分类号： G05B15/00 ,  B60Q1/00 ,  G05B19/00

    CPC分类号： G05D1/0227 ,  A47L11/4061 ,  A47L11/4072 ,  A47L2201/04

    摘要： An obstruction-determining apparatus for preventing a mobile robot from being obstructed in a niche and a boundary-estimation method and medium using the obstruction-determining apparatus are disclosed. More particularly, an obstruction-determining apparatus which can determine whether a mobile robot is obstructed in a niche, and enable a mobile robot to easily escape from an obstacle if the mobile robot is determined to be obstructed in the niche, and a boundary-estimation method and medium for estimating the boundaries of an obstacle with a niche using the obstruction-determining apparatus. The obstruction-determining apparatus includes a contact module which collides with an obstacle above the mobile robot, a contact-operating module which rotates or moves linearly as a result of the collision between the contact module and the obstacle, and a sensing module which detects the rotation or the linear movement of the contact-operating module and determines whether the mobile robot is obstructed in a niche.

    摘要翻译： 公开了一种用于防止移动机器人在利基中被阻碍的障碍物确定装置和使用障碍物确定装置的边界估计方法和介质。 更具体地，涉及一种障碍物判定装置，其能够判断移动机器人是否受到利基的阻碍，并且如果移动机器人被确定为在利基中被阻碍，则能够使移动机器人容易地从障碍物逃脱，并且边界估计 方法和介质，用于使用障碍物确定装置估计具有利基的障碍物的边界。 障碍物确定装置包括与移动机器人上方的障碍物相撞的接触模块，由于接触模块与障碍物之间的碰撞而线性旋转或移动的接触操作模块，以及检测模块 旋转或接触操作模块的线性移动，并确定移动机器人是否在利基中被阻挡。

    Apparatus and method for detecting packet end point in wireless communication system
    3.
    发明授权
    Apparatus and method for detecting packet end point in wireless communication system 有权
    无线通信系统中的分组终点检测装置及方法

    公开(公告)号：US08817921B2

    公开(公告)日：2014-08-26

    申请号：US12965333

    申请日：2010-12-10

    申请人： Il-Gu Lee ,  Eun-Young Choi ,  Jung-Bo Son ,  Hun-Sik Kang ,  Sok-Kyu Lee

    发明人： Il-Gu Lee ,  Eun-Young Choi ,  Jung-Bo Son ,  Hun-Sik Kang ,  Sok-Kyu Lee

    IPC分类号： H04L27/14 ,  H04L27/26

    CPC分类号： H04L27/2656 ,  H04L5/0023 ,  H04L27/2657 ,  H04L27/2675 ,  H04L27/2678 ,  H04L27/2688

    摘要： An apparatus for detecting a packet end point in a wireless communication system includes: a signal reception unit configured to receive a signal from an outside, convert the signal into a baseband signal, perform analog-digital conversion of the baseband signal, and perform a digital front end; a storage unit configured to store an output of the signal reception unit; a frequency offset estimation unit configured to estimate a frequency offset using the output of the storage unit; a frequency offset correction unit configured to compensate for a frequency error using the estimated frequency offset; an offset correlation unit configured to calculate correlation of the frequency offset and a cyclic prefix; an auto-correlation operation unit configured to calculate auto-correlation of the cyclic prefix; and a packet end detection unit configured to check a packet end point using the auto-correlation.

    摘要翻译： 一种用于在无线通信系统中检测分组终点的装置包括：信号接收单元，被配置为从外部接收信号，将该信号转换为基带信号，执行基带信号的模数转换，并执行数字 前端; 存储单元，被配置为存储所述信号接收单元的输出; 频率偏移估计单元，被配置为使用所述存储单元的输出来估计频率偏移; 频率偏移校正单元，被配置为使用所估计的频率偏移来补偿频率误差; 偏移相关单元，被配置为计算所述频率偏移和循环前缀的相关性; 自相关操作单元，被配置为计算所述循环前缀的自相关; 以及分组结束检测单元，被配置为使用所述自相关来检查分组结束点。

    Residual frequency, phase, timing offset and signal amplitude variation tracking apparatus and methods for OFDM systems
    4.
    发明授权
    Residual frequency, phase, timing offset and signal amplitude variation tracking apparatus and methods for OFDM systems 有权
    用于OFDM系统的残余频率，相位，定时偏移和信号幅度变化跟踪装置和方法

    公开(公告)号：US07916797B2

    公开(公告)日：2011-03-29

    申请号：US11286996

    申请日：2005-11-22

    申请人： Heejung Yu ,  Taehyun Jeon ,  Myung-Soon Kim ,  Eun-Young Choi ,  Sok-Kyu Lee ,  Deuk-Su Lyu

    发明人： Heejung Yu ,  Taehyun Jeon ,  Myung-Soon Kim ,  Eun-Young Choi ,  Sok-Kyu Lee ,  Deuk-Su Lyu

    IPC分类号： H04K1/10 ,  H04L27/00 ,  H04J11/00

    CPC分类号： H04L27/266 ,  H04L27/2659 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2682 ,  H04L27/2685 ,  H04L27/2695

    摘要： An error tracking apparatus and method for tracking a residual frequency error, a phase error, a timing error, and a signal amplitude variation to enhance a phase error tracking performance and a tracking speed in an orthogonal frequency division multiplexing (OFDM) system is provided. The error tracking apparatus and method include: a frequency error corrector for correcting a frequency at a time domain by adding a tracking carrier error estimating value to an initial carrier frequency error estimating value; a signal amplitude tracking corrector for controlling a signal amplitude by multiplying an input signal converted by a fast Fourier transform (FFT) by an output value corresponding to a calculated power of a receive pilot signal; a channel corrector for outputting a channel correcting signal by multiplying the receive pilot signal by a complex conjugate of a frequency channel response of the receive pilot signal; a carrier frequency error estimator for estimating a carrier frequency error parameter using the channel-corrected pilot and providing the tracking carrier frequency error estimating value; a time offset estimator for estimating a time offset parameter using the channel-corrected pilot; and a carrier phase error estimator for estimating a carrier phase error parameter using the channel-corrected pilot.

    摘要翻译： 提供了一种用于跟踪残余频率误差，相位误差，定时误差和信号幅度变化的误差跟踪装置和方法，以增强正交频分复用（OFDM）系统中的相位误差跟踪性能和跟踪速度。 误差跟踪装置和方法包括：频率误差校正器，用于通过将初始载波频率误差估计值加上跟踪载波误差估计值来校正时域的频率; 信号幅度跟踪校正器，用于通过将通过快速傅里叶变换（FFT）转换的输入信号乘以与所计算的接收导频信号的功率相对应的输出值来控制信号幅度; 信道校正器，用于通过将接收导频信号乘以接收导频信号的频率信道响应的复共轭来输出信道校正信号; 载波频率误差估计器，用于使用所述信道校正的导频来估计载波频率误差参数，并提供所述跟踪载波频率误差估计值; 时间偏移估计器，用于使用所述通道校正的导频来估计时间偏移参数; 以及载波相位误差估计器，用于使用信道校正的导频来估计载波相位误差参数。

    Semiconductor device having load resistor and method of fabricating the same
    5.
    发明授权
    Semiconductor device having load resistor and method of fabricating the same 失效
    具有负载电阻的半导体器件及其制造方法

    公开(公告)号：US07306552B2

    公开(公告)日：2007-12-11

    申请号：US11292633

    申请日：2005-12-02

    申请人： Eun-Young Choi ,  Eun-Jin Baek

    发明人： Eun-Young Choi ,  Eun-Jin Baek

    IPC分类号： H01L21/20

    CPC分类号： H01L27/105 ,  H01L27/0629 ,  H01L27/11526 ,  H01L27/11531

    摘要： A semiconductor device includes a semiconductor substrate having a resistor region, an isolation layer disposed in the resistor region, the isolation layer defining active regions, first conductive layer patterns disposed on the active regions, a second conductive layer pattern covering the first conductive layer patterns and disposed on the isolation layer, the second conductive layer pattern and the first conductive layer patterns constituting a load resistor pattern, an upper insulating layer disposed over the load resistor pattern, and resistor contact plugs disposed over the active regions, the resistor contact plugs penetrating the upper insulating layer to contact the load resistor pattern.

    摘要翻译： 半导体器件包括具有电阻器区域的半导体衬底，设置在电阻器区域中的隔离层，限定有源区的隔离层，设置在有源区上的第一导电层图案，覆盖第一导电层图案的第二导电层图案和 设置在隔离层上，第二导电层图案和构成负载电阻图案的第一导电层图案，设置在负载电阻图案上的上绝缘层和设置在有源区上的电阻器接触插塞，电阻器接触插塞穿透 上绝缘层接触负载电阻图案。

    Transmitting and receiving systems for increasing service coverage in orthogonal frequency division multiplexing wireless local area network, and method thereof
    7.
    发明申请
    Transmitting and receiving systems for increasing service coverage in orthogonal frequency division multiplexing wireless local area network, and method thereof 有权
    用于在正交频分复用无线局域网中增加服务覆盖的发射和接收系统及其方法

    公开(公告)号：US20070115802A1

    公开(公告)日：2007-05-24

    申请号：US11635927

    申请日：2006-12-08

    申请人： Hee-Jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Sok-Kyu Lee ,  Seung-Chan Bang ,  Seung-Ku Hwang

    发明人： Hee-Jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Sok-Kyu Lee ,  Seung-Chan Bang ,  Seung-Ku Hwang

    IPC分类号： H04J11/00

    CPC分类号： H04L5/0046 ,  H04L27/2613 ,  H04L27/2627 ,  H04L27/2649 ,  H04W28/14 ,  H04W72/04 ,  H04W84/12

    摘要： The present invention relates to an orthogonal frequency division multiplexing wireless local area network (LAN) transmitting/receiving system for providing expanded service coverage, and a method thereof. According to the present invention, first OFDM modulation is performed for an even-numbered time, and second OFDM modulation is performed by changing subcarrier allocation positions of first OFDM modulated symbols for an odd-numbered time. In addition, a transmitting frame including a plurality of signal fields according to the first and second OFDM modulation is transmitted. The receiving system determines a format configuration of the received frame to determine whether a signal field is repeatedly generated in the frame. When it is determined that the signal field is not repeatedly generated, corresponding demodulation is performed. When it is determined that the signal field is repeatedly performed, the signal field is demodulated by using first bit allocation information and is demodulated by using second bit allocation information having a 1/2 value of the first bit allocation information. A data field is demodulated according to the demodulated signal field.

    摘要翻译： 本发明涉及一种用于提供扩展业务覆盖的正交频分复用无线局域网（LAN）发送/接收系统及其方法。 根据本发明，对于偶数时间执行第一OFDM调制，并且通过改变奇数时间的第一OFDM调制符号的副载波分配位置来执行第二OFDM调制。 此外，发送包括根据第一和第二OFDM调制的多个信号字段的发送帧。 接收系统确定接收到的帧的格式配置，以确定帧中是否重复产生信号字段。 当确定信号域不被重复产生时，执行相应的解调。 当确定重复执行信号场时，通过使用第一比特分配信息解调信号场，并且通过使用具有第一比特分配信息的1/2值的第二比特分配信息进行解调。 根据解调信号字段对数据字段进行解调。

    Apparatus and method for detecting signal in wireless communication system
    8.
    发明授权
    Apparatus and method for detecting signal in wireless communication system 有权
    无线通信系统信号检测装置及方法

    公开(公告)号：US08817920B2

    公开(公告)日：2014-08-26

    申请号：US12965282

    申请日：2010-12-10

    申请人： Jung-Bo Son ,  Eun-Young Choi ,  Sok-Kyu Lee

    发明人： Jung-Bo Son ,  Eun-Young Choi ,  Sok-Kyu Lee

    IPC分类号： H04L27/06

    CPC分类号： H04L27/3863 ,  H04L5/0023 ,  H04L5/005 ,  H04L27/2647

    摘要： The apparatus includes a radio frequency (RF) unit configured to arrange a plurality of symbols received through an antenna at a frequency domain, an analog to digital (AD) converter configured to converts the plurality of symbols arranged at the frequency domain to digital symbols, a fast Fourier transform (FFT) unit configured to transform the digital symbols through a fast Fourier transform scheme, a compensator configured to compensate a gain mismatch between an I-channel and a Q-channel of the transformed digital symbols, a mapping unit configured to the compensated digital symbols to a constellation diagram, and a detector configured to correlate the mapped symbols, extract correlation results, and detect a high throughput (HT) signal using the extracted correlation results.

    摘要翻译： 该装置包括：射频（RF）单元，被配置为布置以频域通过天线接收的多个符号;模拟数字（AD）转换器，被配置为将在频域处布置的多个符号转换为数字符号; 被配置为通过快速傅里叶变换方案对数字符号进行变换的快速傅立叶变换（FFT）单元，配置为补偿经变换的数字符号的I信道和Q信道之间的增益失配的补偿器，配置为 将经补偿的数字符号转换成星座图，以及检测器，被配置为使所映射的符号相关，提取相关结果，并使用所提取的相关结果检测高吞吐量（HT）信号。

    Decoding device and method for MIMO system
    10.
    发明授权
    Decoding device and method for MIMO system 有权
    MIMO系统的解码设备和方法

    公开(公告)号：US08265204B2

    公开(公告)日：2012-09-11

    申请号：US12602353

    申请日：2008-05-19

    申请人： Eun-Young Choi ,  Chan Ho Yoon ,  Jung Bo Son ,  Hun Sik Kang ,  Sok-Kyu Lee ,  Seok Hyun Yoon

    发明人： Eun-Young Choi ,  Chan Ho Yoon ,  Jung Bo Son ,  Hun Sik Kang ,  Sok-Kyu Lee ,  Seok Hyun Yoon

    IPC分类号： H04L27/06

    CPC分类号： H04L1/0631 ,  H04L1/006

    摘要： The present invention relates to a decoding device and method for a MIMO system. A linear process is applied to a received signal vector by using a channel matrix estimated from the received signal vector and a poly-diagonalized matrix, and a soft decision value is acquired through a trellis decode by using the linear process result. Since the linear preprocess is performed by using the poly-diagonalized matrix, it is possible to receive a MIMO signal having good packet error rate performance and less complexity. Also, since the tail-biting trellis decoding method is used based on the poly-diagonalized matrix that is generated by poly-diagonalizing the effective channel matrix during the process for eliminating the signal interference, the soft decision value for the symbol can be generated with a simple hardwired device and less operation complexity.

    摘要翻译： 本发明涉及MIMO系统的解码装置和方法。 通过使用从接收信号向量和多对角化矩阵估计的信道矩阵将线性处理应用于接收信号向量，并且通过使用线性处理结果通过网格解码获取软判决值。 由于通过使用多对角化矩阵来执行线性预处理，所以可以接收具有良好的分组错误率性能和较低复杂度的MIMO信号。 另外，由于基于在消除信号干扰的处理期间通过对有效信道矩阵进行多对角化而产生的多对角化矩阵使用尾巴格状解码方法，所以可以生成符号的软判决值， 简单的硬连线设备，操作复杂度较低。