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公开(公告)号：EP1480401A3
公开(公告)日：2007-09-05
申请号：EP04250579.2
申请日：2004-02-04
发明人： Hong, Dae-sik , Choi, Young-ho
IPC分类号： H04L27/26
CPC分类号： H04L27/2659 , H04L27/2662 , H04L27/2675
摘要： A frequency-offset estimator comprises a plurality of correlators for obtaining correlation values between scattered pilots of a received OFDM symbol, in the frequency domain, and a plurality of classes of scattered pilots. A first selector determines the class of scattered pilots that provides the largest of the correlation values. A second selector estimates the frequency offset, based on the largest correlation value and the class of the scattered pilot determined by the first selector. In this manner, the frequency offset is estimated using one OFDM symbol and is resistant to symbol timing offsets and fractional frequency offsets.
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2.发明授权Method for controlling movement of head in data storage device and disk drive employing the method 有权用于在使用该方法的控制的数据记录装置和记录播放器中的头的移动的方法
公开(公告)号：EP1564727B1
公开(公告)日：2008-12-24
申请号：EP05003424.8
申请日：2005-02-17
发明人： Jeong, Ki-tag , Lee, Chul-woo , Jung, Jae-myung , Jeong, Jun , Hong, Dae-sik , Cho, Han-rae
CPC分类号： G11B19/042 , G11B5/54 , G11B21/12
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3.发明公开Method for controlling movement of head in data storage device and disk drive employing the method 有权用于在使用该方法的控制的数据记录装置和记录播放器中的头的移动的方法
公开(公告)号：EP1564727A3
公开(公告)日：2006-12-13
申请号：EP05003424.8
申请日：2005-02-17
发明人： Jeong, Ki-tag , Lee, Chul-woo , Jung, Jae-myung , Jeong, Jun , Hong, Dae-sik , Cho, Han-rae
CPC分类号： G11B19/042 , G11B5/54 , G11B21/12
摘要： A method for controlling a disk drive includes: detecting an amount of an impact applied to the disk drive, and determining whether the detected amount exceeds a critical value; reading position information of a cylinder, over which a head is positioned, when the detected amount exceeds the critical value, and suspending a command being implemented; determining whether the read cylinder number exceeds a reference cylinder number; and moving the head in an innermost peripheral direction of the disk when the read cylinder number exceeds the reference cylinder number, and moving the head in an outermost peripheral direction of the disk when the read cylinder number does not exceed the reference cylinder number.
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公开(公告)号：EP1422897A3
公开(公告)日：2007-04-04
申请号：EP03257302.4
申请日：2003-11-19
发明人： Yoo, Hwa-sun , Park, Myong-hee B 710 Inf.and Telec.Lab. , Hong, Dae-sik , Kim, Yung-soo , Jeong, Byung-Jang
IPC分类号： H04L27/26
CPC分类号： H04L27/2626 , H04L27/2605
摘要： An apparatus for generating an edge sidelobe canceling signal and an uplink communication apparatus using the same in an orthogonal frequency division multiplexing access (OFDMA) system are provided. The uplink communication apparatus includes a transmitting terminal. The transmitting terminal includes a signal mapping unit, a serial-to-parallel conversion unit, an edge sidelobe canceling signal generation unit, an inverse fast Fourier transform (IFFT) unit, and a guard interval insertion and parallel-to-serial conversion unit. The edge sidelobe canceling signal generation unit generates an upper edge sidelobe canceling signal corresponding to an inner product of a transmission signal vector of the transmitting terminal and an optimized upper weight vector and a lower edge sidelobe canceling signal corresponding to an inner product of the transmission signal vector of the transmitting terminal and an optimized lower weight vector and allocates the upper and lower edge sidelobe canceling signals to subcarriers in guard intervals, respectively.
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5.发明公开Method for controlling movement of head in data storage device and disk drive employing the method 有权用于在使用该方法的控制的数据记录装置和记录播放器中的头的移动的方法
公开(公告)号：EP1564727A2
公开(公告)日：2005-08-17
申请号：EP05003424.8
申请日：2005-02-17
发明人： Jeong, Ki-tag , Lee, Chul-woo , Jung, Jae-myung , Jeong, Jun , Hong, Dae-sik , Cho, Han-rae
CPC分类号： G11B19/042 , G11B5/54 , G11B21/12
摘要： A method for controlling a disk drive includes: detecting an amount of an impact applied to the disk drive, and determining whether the detected amount exceeds a critical value; reading position information of a cylinder, over which a head is positioned, when the detected amount exceeds the critical value, and suspending a command being implemented; determining whether the read cylinder number exceeds a reference cylinder number; and moving the head in an innermost peripheral direction of the disk when the read cylinder number exceeds the reference cylinder number, and moving the head in an outermost peripheral direction of the disk when the read cylinder number does not exceed the reference cylinder number.
摘要翻译： 一种用于控制磁盘驱动器方法，包括：检测在施加到磁盘驱动器的冲击，和确定是否采的检测量超过临界值量; 读取气缸的位置信息，在其被定位的头部，当检测到的量超过临界值，和悬浮剂正在执行的命令; 确定性采矿无论读气缸数超过基准气缸数; 和移动在磁盘当读气缸数超过基准气缸数中的最内周方向上的头，并且在磁盘的外最周边方向上移动的头部当读气缸数大小限制基准气缸数。
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6.发明公开Frequency-offset estimator for multi-carrier reception 审中-公开Schötzungdes FrenquenzabsatzesfürMehrträgerempfang
公开(公告)号：EP1480401A2
公开(公告)日：2004-11-24
申请号：EP04250579.2
申请日：2004-02-04
发明人： Hong, Dae-sik , Choi, Young-ho
IPC分类号： H04L27/26
CPC分类号： H04L27/2659 , H04L27/2662 , H04L27/2675
摘要： An integer frequency offset estimator comprises a plurality of correlators for obtaining correlation values between a scattered pilot of a received OFDM symbol in the frequency domain and a plurality of classes of scattered pilots of a reference signal. A first selector determines the class of a scattered pilot class that provides the largest of the correlation values obtained at the correlators. A second selector estimates an integer frequency offset based on the largest correlation value and the class of the scattered pilot as determined by the first selector. In this manner, the integer frequency offset is estimated using one OFDM symbol and is resistant to symbol timing offsets and fractional frequency offsets.
摘要翻译： 频偏估计器包括多个相关器，用于获得在频域中的接收OFDM符号的散射导频与多个散射导频类之间的相关值。 第一选择器确定提供最大相关值的散射导频类。 第二选择器基于由第一选择器确定的最大相关值和散射导频的类别来估计频率偏移。 以这种方式，使用一个OFDM符号估计频率偏移并且抵抗符号定时偏移和分数频率偏移。
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7.发明公开
公开(公告)号：EP1422897A2
公开(公告)日：2004-05-26
申请号：EP03257302.4
申请日：2003-11-19
IPC分类号： H04L27/26
CPC分类号： H04L27/2626 , H04L27/2605
摘要： An apparatus for generating an edge sidelobe canceling signal and an uplink communication apparatus using the same in an orthogonal frequency division multiplexing access (OFDMA) system are provided. The uplink communication apparatus includes a transmitting terminal. The transmitting terminal includes a signal mapping unit, a serial-to-parallel conversion unit, an edge sidelobe canceling signal generation unit, an inverse fast Fourier transform (IFFT) unit, and a guard interval insertion and parallel-to-serial conversion unit. The edge sidelobe canceling signal generation unit generates an upper edge sidelobe canceling signal corresponding to an inner product of a transmission signal vector of the transmitting terminal and an optimized upper weight vector and a lower edge sidelobe canceling signal corresponding to an inner product of the transmission signal vector of the transmitting terminal and an optimized lower weight vector and allocates the upper and lower edge sidelobe canceling signals to subcarriers in guard intervals, respectively.
摘要翻译： 提供一种用于在正交频分复用接入（OFDMA）系统中生成边缘旁瓣消除信号的装置和使用它的上行链路通信装置。 上行链路通信装置包括发送终端。 发送终端包括信号映射单元，串并转换单元，边缘旁瓣消除信号生成单元，逆快速傅里叶变换（IFFT）单元以及保护间隔插入和并行到串行转换单元。 边缘旁瓣消除信号生成单元生成与发送终端的发送信号矢量的内积对应的上边缘旁瓣消除信号和对应于发送信号的内积的优化上权重向量和下边缘旁瓣消除信号 发送终端的向量和优化的较低权重向量，并分别将上下边缘旁瓣消除信号分配给保护间隔中的子载波。
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