-
公开(公告)号：US20100287420A1
公开(公告)日：2010-11-11
申请号：US12663325
申请日：2008-10-27
申请人： George Mathew , Yuan Xing Lee , Hongwei Song , Liu Jingfeng , Jongseung Park
发明人： George Mathew , Yuan Xing Lee , Hongwei Song , Liu Jingfeng , Jongseung Park
IPC分类号： G06F11/07
CPC分类号： G11B19/041 , G11B5/09 , G11B20/10009 , G11B20/10046 , G11B20/10481 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for performing adaptive equalization. For example, various embodiments of the present invention provide methods for adaptive equalization that include providing a data processing system with an equalizer circuit (210) and a target filter circuit (265). The equalizer circuit performs equalization based at least in part on an equalizer coefficient (215). The methods further include generating an error (285) based upon a first output from the equalizer circuit and a second output from the target filter circuit. An inter-symbol interference component (295) is extracted from the error (285) and used to calculate an equalizer gradient (226). Based at least in part on the equalizer gradient (226), the equalizer coefficient (215) is calculated.
摘要翻译： 本发明的各种实施例提供了用于执行自适应均衡的系统和方法。 例如，本发明的各种实施例提供了用于自适应均衡的方法，其包括向数据处理系统提供均衡器电路（210）和目标滤波器电路（265）。 均衡器电路至少部分地基于均衡器系数（215）来执行均衡。 所述方法还包括基于均衡器电路的第一输出和来自目标滤波器电路的第二输出产生误差（285）。 从误差（285）提取符号间干扰分量（295），并用于计算均衡器梯度（226）。 至少部分地基于均衡器梯度（226），计算均衡器系数（215）。
-
公开(公告)号：US08693119B2
公开(公告)日：2014-04-08
申请号：US13591888
申请日：2012-08-22
CPC分类号： G11B20/24 , G11B5/012 , G11B19/045 , G11B20/10046 , G11B20/10398 , G11B20/1217 , G11B2020/10759 , G11B2020/1232 , G11B2020/1298 , G11B2220/2516
摘要： Described embodiments cancel inter-track interference (ITI) from one or more sectors read from a desired track of a storage medium. A read channel reads one or more sectors in the desired track and generates one or more groups of sample values corresponding to each of the sectors. An ITI canceller estimates an ITI response and an ITI signal for each sample value corresponding to (i) a next adjacent track and (ii) a previous adjacent track. If the estimated ITI response of the previous adjacent track reaches a predetermined threshold, the ITI canceller subtracts the estimated ITI signal corresponding to the previous adjacent track from each associated sample value of the desired track. If the estimated ITI response of the next adjacent track reaches a predetermined threshold, the ITI canceller subtracts the estimated ITI signal corresponding to the next adjacent track from each associated sample value of the desired track.
摘要翻译： 所描述的实施例从从存储介质的期望轨道读取的一个或多个扇区中消除轨道间干扰（ITI）。 读通道读取所需轨道中的一个或多个扇区，并生成与每个扇区对应的一组或多组样本值。 ITI消除器估计对应于（i）下一个相邻轨道和（ii）先前相邻轨道的每个采样值的ITI响应和ITI信号。 如果先前相邻轨道的估计ITI响应达到预定阈值，则ITI消除器从期望轨道的每个相关联采样值中减去对应于先前相邻轨道的估计ITI信号。 如果下一相邻轨道的估计ITI响应达到预定阈值，则ITI消除器从期望轨道的每个相关联采样值中减去对应于下一相邻轨道的估计ITI信号。
-
公开(公告)号：US20090044084A1
公开(公告)日：2009-02-12
申请号：US11835706
申请日：2007-08-08
申请人： Jongseung Park , Andrei E. Vityaev , Li Du
发明人： Jongseung Park , Andrei E. Vityaev , Li Du
IPC分类号： G06F11/00
CPC分类号： G11B5/09 , G11B20/18 , G11B20/24 , G11B2005/0016 , G11B2020/1863 , G11B2220/2516
摘要： A method of double detection in a perpendicular magnetic read channel is disclosed. The method generally includes the steps of (A) generating an intermediate signal by performing a first detection on an input signal of the perpendicular read channel, the first detection having a first error rate, (B) generating a statistics signal based on the intermediate signal, the statistics signal conveying noise statistics that depend on data in the input signal and (C) generating an output signal by performing a second detection on the input signal using the noise statistics to reduce a second error rate of the second detection compared with the first error rate, wherein the first detection is independent of the second detection.
摘要翻译： 公开了一种在垂直磁读取通道中进行双重检测的方法。 该方法通常包括以下步骤：（A）通过对垂直读通道的输入信号执行第一检测来产生中间信号，第一检测具有第一误码率，（B）基于中间信号产生统计信号 统计信号传送取决于输入信号中的数据的噪声统计信息，（C）通过使用噪声统计对输入信号执行第二检测来产生输出信号，以减少第二检测的第二误差率 错误率，其中第一检测与第二检测无关。
-
公开(公告)号：US07602567B2
公开(公告)日：2009-10-13
申请号：US11770243
申请日：2007-06-28
IPC分类号： G11B5/09
CPC分类号： G11B20/10203
摘要： A method of feed-forward DC restoration in a perpendicular magnetic read channel is disclosed. The method generally includes the steps of (A) generating a feed-forward signal by performing a first detection on an input signal, wherein a DC component of the input signal was previously filtered out in the perpendicular magnetic read channel, (B) generating a restored signal by summing the input signal and the feed-forward signal, the summing restoring the DC component previously filtered out and (C) generating an output signal by performing a second detection on the restored signal, wherein the first detection is independent of the second detection.
摘要翻译： 公开了一种在垂直磁读取通道中前馈DC恢复的方法。 该方法通常包括以下步骤：（A）通过对输入信号执行第一检测来产生前馈信号，其中输入信号的直流分量先前在垂直磁读取通道中滤波，（B）产生一个 通过对输入信号和前馈信号相加来恢复信号，求和恢复先前滤除的DC分量，（C）通过对还原信号执行第二检测来产生输出信号，其中第一检测独立于第二检测 检测。
-
公开(公告)号：US20090002862A1
公开(公告)日：2009-01-01
申请号：US11770243
申请日：2007-06-28
IPC分类号： G11B5/09
CPC分类号： G11B20/10203
摘要： A method of feed-forward DC restoration in a perpendicular magnetic read channel is disclosed. The method generally includes the steps of (A) generating a feed-forward signal by performing a first detection on an input signal, wherein a DC component of the input signal was previously filtered out in the perpendicular magnetic read channel, (B) generating a restored signal by summing the input signal and the feed-forward signal, the summing restoring the DC component previously filtered out and (C) generating an output signal by performing a second detection on the restored signal, wherein the first detection is independent of the second detection.
摘要翻译： 公开了一种在垂直磁读取通道中前馈DC恢复的方法。 该方法通常包括以下步骤：（A）通过对输入信号执行第一检测来产生前馈信号，其中输入信号的直流分量先前在垂直磁读取通道中滤波，（B）产生一个 通过对输入信号和前馈信号相加来恢复信号，求和恢复先前滤除的DC分量，（C）通过对还原信号执行第二检测来产生输出信号，其中第一检测独立于第二检测 检测。
-
公开(公告)号：US08046666B2
公开(公告)日：2011-10-25
申请号：US11835706
申请日：2007-08-08
申请人： Jongseung Park , Andrei E. Vityaev , Li Du
发明人： Jongseung Park , Andrei E. Vityaev , Li Du
IPC分类号： H03M13/00
CPC分类号： G11B5/09 , G11B20/18 , G11B20/24 , G11B2005/0016 , G11B2020/1863 , G11B2220/2516
摘要： A method of double detection in a perpendicular magnetic read channel is disclosed. The method generally includes the steps of (A) generating an intermediate signal by performing a first detection on an input signal of the perpendicular read channel, the first detection having a first error rate, (B) generating a statistics signal based on the intermediate signal, the statistics signal conveying noise statistics that depend on data in the input signal and (C) generating an output signal by performing a second detection on the input signal using the noise statistics to reduce a second error rate of the second detection compared with the first error rate, wherein the first detection is independent of the second detection.
摘要翻译： 公开了一种在垂直磁读取通道中进行双重检测的方法。 该方法通常包括以下步骤：（A）通过对垂直读通道的输入信号执行第一检测来产生中间信号，第一检测具有第一误码率，（B）基于中间信号产生统计信号 统计信号传送取决于输入信号中的数据的噪声统计信息，（C）通过使用噪声统计对输入信号执行第二检测来产生输出信号，以减少第二检测的第二误差率 错误率，其中第一检测与第二检测无关。
-
公开(公告)号：US07331012B2
公开(公告)日：2008-02-12
申请号：US10634723
申请日：2003-08-05
申请人： Bane Vasic , Jongseung Park , Erozan Mehmet Kurtas
发明人： Bane Vasic , Jongseung Park , Erozan Mehmet Kurtas
IPC分类号： H03M13/00
CPC分类号： H03M13/136 , H03M13/1111 , H03M13/114 , H03M13/1191 , H03M13/15 , H03M13/2957 , H03M13/39 , H03M13/4146 , H03M13/458 , H03M13/616 , H03M13/6343 , H04L1/005 , H04L1/0057 , H04L1/0071 , H04L25/03286
摘要： A system for soft-decoding of Reed-Muller coded information has one or more rows of decoding blocks, each decoding block having a soft-output device and a Reed-Muller message passing device. A first soft-output device of a first decoding block processes a coded signal and a zero value probability vector. Each subsequent soft-output device processes the coded information and a non-zero value probability vector. The system for soft-decoding Reed-Muller coded information decodes a code-bit reliability vector from a soft-output device to generate an updated codeword reliability vector, which is used by a next decoding block in a sequence of decoding blocks to reprocess the coded information using the updated reliability vector. The reliability vector is updated through processing in each decoding block to optimize the reliability vector for extraction of the transmitted information from the received information.
摘要翻译： 用于对Reed-Muller编码信息进行软解码的系统具有一行或多行解码块，每个解码块具有软输出设备和Reed-Muller消息传递设备。 第一解码块的第一软输出装置处理编码信号和零值概率向量。 每个后续软输出设备处理编码信息和非零值概率向量。 用于软解码的系统Reed-Muller编码信息从软输出设备解码码位可靠性向量以产生更新的码字可靠性向量，其由解码块序列中的下一个解码块用于重新处理编码的 使用更新的可靠性向量的信息。 通过在每个解码块中的处理来更新可靠性向量，以优化从所接收的信息中提取所发送的信息的可靠性向量。
-
公开(公告)号：US06976203B2
公开(公告)日：2005-12-13
申请号：US10633791
申请日：2003-08-04
CPC分类号： H03M13/296 , H03M13/2948 , H03M13/2957 , H03M13/2972 , H03M13/2978 , H03M13/3746 , H03M13/39 , H03M13/45 , H03M13/458
摘要： The Turbo decoding architecture has a first soft-input soft-output (SISO) device having a complex trellis structure and a Turbo decoder loop with a second SISO device having a simpler trellis structure. Coded information from a channel is processed by the first SISO device to generate a soft-output based on the coded information. The soft-output is then processed in an iterative loop using the second SISO device. The second SISO device interacts with a decoder device to produce a value representative of the transmitted information.
摘要翻译： Turbo解码架构具有具有复杂网格结构的第一软输入软输出（SISO）设备和具有更简单网格结构的第二SISO设备的Turbo解码器环路。 来自信道的编码信息由第一SISO设备处理，以基于编码信息产生软输出。 然后使用第二SISO设备在迭代循环中处理软输出。 第二SISO设备与解码器设备交互以产生代表传输信息的值。
-
-
-
-
-
-
-
搜索结果
28 条记录 (耗时 0.025 秒)
