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1. 发明申请

WO2003050810A2 METHOD AND APPARATUS FOR PREPROCESSING LOW FREQUENCIES IN PERPENDICULAR RECORDING 审中-公开
标题翻译：用于预测低频频率记录的方法和装置
公开(公告)号：WO2003050810A2
公开(公告)日：2003-06-19
申请号：PCT/US2002/010617
申请日：2002-04-04
申请人： SEAGATE TECHNOLOGY LLC
发明人： ERDEN, Mehmet, F. , KURTAS, Erozan, M.
IPC分类号： G11B20/10
CPC分类号： G11B20/10009 , G11B27/36 , G11B2220/20
摘要： A method (210) of preprocessing low frequency components of a perpendicular read-back signal in a data storage system in order to reduce low frequency noise includes introducing (215) a dominant known perturbation, to the perpendicular read-back signal, which masks the effects of other low frequency noise sources and leaves the read-back signal with one dominant low frequency noise component. The method then further includes removing (220) the dominant known perturbation from the read-back signal to recover low frequency portions of the read-back signal in order to determine values of bits read from a storage medium. A perpendicular recording data storage system (100) configured to implement the method (210) is also disclosed.
摘要翻译：为了降低低频噪声，对数据存储系统中的垂直回读信号的低频分量进行预处理的方法（210）包括：向垂直回读信号引入（215）主导的已知扰动，该垂直回读信号掩蔽其他低频噪声源的影响，并使回扫信号具有一个主要的低频噪声分量。该方法然后还包括从回读信号中去除（220）主导的已知扰动，以恢复回读信号的低频部分，以便确定从存储介质读取的位的值。还公开了一种被配置为实现方法（210）的垂直记录数据存储系统（100）。

2. 发明申请

WO2003085646A1 MR HEAD THERMAL ASPERITY CANCELLATION 审中-公开
标题翻译：热源热平衡取消
公开(公告)号：WO2003085646A1
公开(公告)日：2003-10-16
申请号：PCT/US2002/026542
申请日：2002-08-21
申请人： SEAGATE TECHNOLOGY LLC
发明人： ERDEN, Mehmet, F. , KURTAS, Erozan
IPC分类号： G11B5/012
CPC分类号： G11B5/012 , G11B5/02 , G11B5/09 , G11B5/6076 , G11B2005/001 , G11B2005/0016
摘要： A disc drive data recovery system (100) for recovering data from a magnetic disc (110) having asperities provided. Readback data (202) follows a nominal readback path (210) and a thermal asperity cancellation readback path (218). A thermal asperity detector (204) detects a thermal asperity in the readback signal and responsively selects the readback signal (214) which follows the thermal asperity cancellation readback path (218).
摘要翻译：一种用于从具有粗糙度的磁盘（110）恢复数据的盘驱动器数据恢复系统（100）。回读数据（202）遵循标称回读路径（210）和热粗糙度消除回读路径（218）。散热检测器（204）检测回读信号中的热不均匀性，并且响应于选择跟随热绝对消除回读路径（218）的回读信号（214）。

3. 发明申请

WO2003050810A3 METHOD AND APPARATUS FOR PREPROCESSING LOW FREQUENCIES IN PERPENDICULAR RECORDING 审中-公开
公开(公告)号：WO2003050810A3
公开(公告)日：2003-06-19
申请号：PCT/US2002/010617
申请日：2002-04-04
申请人： SEAGATE TECHNOLOGY LLC
发明人： ERDEN, Mehmet, F. , KURTAS, Erozan, M.
IPC分类号： G11B20/10
摘要： A method (210) of preprocessing low frequency components of a perpendicular read-back signal in a data storage system in order to reduce low frequency noise includes introducing (215) a dominant known perturbation, to the perpendicular read-back signal, which masks the effects of other low frequency noise sources and leaves the read-back signal with one dominant low frequency noise component. The method then further includes removing (220) the dominant known perturbation from the read-back signal to recover low frequency portions of the read-back signal in order to determine values of bits read from a storage medium. A perpendicular recording data storage system (100) configured to implement the method (210) is also disclosed.

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