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11. 发明申请

US20060210002A1 Timing recovery in a parallel channel communication system 有权
标题翻译：并行通道系统中的定时恢复
公开(公告)号：US20060210002A1
公开(公告)日：2006-09-21
申请号：US11070917
申请日：2005-03-03
申请人： Xueshi Yang , Mehmet Erden , Erozan Kurtas
发明人： Xueshi Yang , Mehmet Erden , Erozan Kurtas
IPC分类号： H04B1/10
CPC分类号： H04L7/0054 , G11B20/10009 , G11B20/10037 , G11B20/1403 , H04L7/0029 , H04L7/0062
摘要： A parallel channel timing recovery circuit. The parallel timing recovery circuit comprises multiple prefilters receiving parallel channel outputs and providing prefilter outputs. Multiple sampling filters receive the prefilter outputs and provide multiple discrete time signal samples. A self-timing circuit has multiple inputs receiving the multiple discrete time signal samples. The self-timing circuit provides a sampling control output to the sampling filters. The sampling control output is based on a composite of the multiple discrete time signal samples. Each of the sampling filters generates a discrete time signal sample based on the sampling control output and the prefilter outputs.
摘要翻译：并行通道定时恢复电路。并行定时恢复电路包括多个预滤波器，其接收并行通道输出并提供预滤波器输出。多个采样滤波器接收预滤波器输出并提供多个离散时间信号采样。自定时电路具有接收多个离散时间信号样本的多个输入。自定时电路为采样滤波器提供采样控制输出。采样控制输出基于多个离散时间信号样本的复合。每个采样滤波器基于采样控制输出和预滤波器输出产生离散时间信号采样。

12. 发明申请

US20060156171A1 Combining spectral shaping with turbo coding in a channel coding system 审中-公开
标题翻译：在频道编码系统中将频谱整形与turbo编码相结合
公开(公告)号：US20060156171A1
公开(公告)日：2006-07-13
申请号：US11012820
申请日：2004-12-15
申请人： Alexander Kuznetsov , Erozan Kurtas
发明人： Alexander Kuznetsov , Erozan Kurtas
IPC分类号： H03M13/00
CPC分类号： H03M13/31 , G11B20/1866 , H03M13/2903 , H03M13/2963 , H03M13/2984 , H03M13/2987 , H03M13/6343
摘要： A method of combining spectral shaping with turbo coding in a channel coding system. The method comprises encoding user data with spectrally shaped encoding to provide a suppressed DC user data sector output. The method also comprises generating turbo coded redundant bits for the suppressed DC user data sector. The turbo coded redundant bits are interleaved with additive coding to provide a suppressed DC parity sector.
摘要翻译：一种在频道编码系统中组合频谱整形与turbo编码的方法。该方法包括用频谱形状编码对用户数据进行编码，以提供抑制的DC用户数据扇区输出。该方法还包括为被抑制的DC用户数据扇区生成turbo编码的冗余比特。 turbo编码的冗余比特用加法编码进行交织以提供抑制的DC奇偶校验扇区。

13. 发明申请

US20060002689A1 Retrial and reread methods and apparatus for recording channels 有权
标题翻译：重读和重新读取频道的方法和设备
公开(公告)号：US20060002689A1
公开(公告)日：2006-01-05
申请号：US10881398
申请日：2004-06-30
申请人： Xueshi Yang , Erozan Kurtas
发明人： Xueshi Yang , Erozan Kurtas
IPC分类号： H04N5/76 , H04N5/781
CPC分类号： G11B20/18 , G11B20/10009
摘要： A method of reading a data block from a sector of a recording media is described. The data block from the sector of the recording channel is decoded with an ECC decoder (first trial). The data block is re-decoded (second trial) using an adjusted timing recovery block that is adjusted based on the decoded data block, if the number of errors exceeded an error correction capability of the ECC decoder on the first trial. In one embodiment, the data block is reread from the same sector of the recording channel using the adjusted timing recovery block that is adjusted based on the re-decoded data block. The data block is subsequently jointly decoded with the waveforms obtained from the second trial by a possibly modified sequence detector, if the number of errors exceeded the error correction capability of the ECC decoder during the second trial.
摘要翻译：描述从记录介质的扇区读取数据块的方法。来自记录通道的扇区的数据块用ECC解码器解码（第一次试用）。如果第一次试验中ECC解码器的错误数量超过错误校正能力，则使用调整后的基于解码数据块调整的定时恢复块对数据块进行再解码（第二次试验）。在一个实施例中，使用经调整的定时恢复块，根据重新解码的数据块进行调整，从记录通道的相同扇区重新读取数据块。如果在第二次试验期间错误数超过了ECC解码器的纠错能力，则数据块随后由可能修改的序列检测器与从第二次试验获得的波形联合解码。

14. 发明申请

US20050264922A1 Correcting radial incoherence in servo track sensing 有权
标题翻译：纠正伺服轨迹检测中的径向不相干性
公开(公告)号：US20050264922A1
公开(公告)日：2005-12-01
申请号：US11012813
申请日：2004-12-15
申请人： Mehmet Erden , Erozan Kurtas
发明人： Mehmet Erden , Erozan Kurtas
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： A servo track sensing system receives equalized servo data from a servo demodulator and corrects for radial incoherence in the servo data. The system has a radial incoherence estimator that receives the equalized servo data and provides a radial incoherence estimate. A sequence detector receives the equalized servo data and the radial incoherence estimate, and provides a sequence detector output. A correlator receives the sequence detector output and provides correlator output data. The correlator output data has a reduced level of errors due to radial incoherence.
摘要翻译：伺服磁道感测系统从伺服解调器接收均衡的伺服数据，并校正伺服数据中的径向不相干性。该系统具有径向相干估计器，其接收均衡的伺服数据并提供径向不相干估计。序列检测器接收均衡的伺服数据和径向不相干估计，并提供序列检测器输出。相关器接收序列检测器输出并提供相关器输出数据。相关器输出数据由于径向不连贯而具有降低的误差水平。

15. 发明申请

US20050169412A1 Pattern-dependent equalization and detection 有权
标题翻译：模式相关的均衡和检测
公开(公告)号：US20050169412A1
公开(公告)日：2005-08-04
申请号：US10771813
申请日：2004-02-03
申请人： Xueshi Yang , Erozan Kurtas
发明人： Xueshi Yang , Erozan Kurtas
IPC分类号： H04L25/03 , H04L27/06
CPC分类号： H04L25/03331 , H04L25/03191 , H04L25/03197
摘要： A system for pattern dependent equalization has an equalizer bank and a detector. The equalizer bank has a plurality of equalizers, which are each tuned to a selected data pattern. The detector may be a standard sequence detector or a modified Viterbi detector, which calculates the branch metric using a pattern dependent equalized output and a pattern-dependent target. A method of decoding data uses a pattern dependent equalizer bank. The pattern dependent equalizer bank processes a segment of a bit sequence to produce an equalized pattern-dependent output for each equalizer in parallel. The detector then detects the bit sequence using the branch metric calculation to select the smallest accumulated path metric.
摘要翻译：用于图形相关均衡的系统具有均衡器组和检测器。均衡器组具有多个均衡器，每个均衡器被调谐到选定的数据模式。检测器可以是标准序列检测器或修改的维特比检测器，其使用模式相关的均衡输出和与模式相关的目标来计算分支度量。数据解码的方法使用模式相关的均衡器组。模式相关均衡器组处理一个位序列的一个段，以平行地为每个均衡器产生均衡的模式相关输出。然后，检测器使用分支度量计算来检测比特序列，以选择最小的累积路径度量。

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