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1.发明授权公开(公告)号：US09460750B1
公开(公告)日：2016-10-04
申请号：US14865113
申请日：2015-09-25
发明人： Xiong Liu , Myint Ngwe , Choon Wei Ng , Jian Qiang , Quan Li
CPC分类号： G11B20/1217 , G11B5/02 , G11B5/59627 , G11B2020/1232
摘要： A data sector is read using two or more passes of a read head over a recording medium. Each of the passes corresponds to a different cross-track offset, each of the data sectors being divided into two or more blocks. For each of the blocks, data is selected from one of the passes that read the block with a higher quality than other passes that read the block. The selected data from each of the blocks to is combined to form recovered data of the data sector.
摘要翻译： 使用读取头在记录介质上的两次或多次通过来读取数据扇区。 每个通道对应于不同的交叉磁道偏移，每个数据扇区被分成两个或更多个块。 对于每个块，从读取块的其中一个通过中读取块的数据从比读取块的其他通过更高的质量中选择数据。 来自每个块的所选数据被组合以形成数据扇区的恢复数据。
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2.发明授权Magnetic read head with multiple read transducers each having different design characteristics 有权磁读头具有多个读取传感器，每个读取传感器具有不同的设计特性公开(公告)号：US09401161B1
公开(公告)日：2016-07-26
申请号：US14644614
申请日：2015-03-11
发明人： Jason C. Jury , Ara Patapoutian , Xiong Liu , Myint Ngwe , Quan Li
CPC分类号： G11B5/02 , G11B5/3974 , G11B5/4886 , G11B15/12 , G11B15/125 , G11B20/10009 , G11B20/10481
摘要： Data is read from a track of a magnetic recording medium via multiple read transducers located at different positions on a read head. The multiple read transducers are substantially positioned over the track when reading the track. The multiple read transducers have different design characteristics manifesting in differences in at least one of magnetic and electrical behavior of the multiple read transducers. One or more signals originating from the multiple read transducers are combined to assist in decoding the data.
摘要翻译： 通过位于读取头上的不同位置的多个读取换能器从磁记录介质的磁道读取数据。 当读取轨道时，多个读取换能器基本上定位在轨道的上方。 多个读取传感器具有不同的设计特征，其表现为多个读取换能器的磁性和电气行为中的至少一个的差异。 来自多个读取换能器的一个或多个信号被组合以帮助解码数据。
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公开(公告)号：US08953275B2
公开(公告)日：2015-02-10
申请号：US13919207
申请日：2013-06-17
发明人： Andy Chou , Quan Li , Chee Wee Cheng , Beng Theam Ko , Myint Ngwe
CPC分类号： G11B5/6076 , G11B5/607
摘要： A method for detecting a contact event between a transducer and a recording medium is disclosed. The method includes positioning a transducer with respect to a recording medium, where the transducer includes a writer, a reader, a heater, and a thermally responsive sensor. The method further includes applying power to the heater to establish a fly height of the transducer; supplying a bias current through the thermally responsive sensor to generate a bias signal; measuring a root mean square (RMS) voltage VRMS of the thermally responsive sensor based on the bias signal; determining a threshold voltage VT; and detecting a contact event between the transducer and the medium based on VRMS being greater than VT.
摘要翻译： 公开了一种用于检测换能器和记录介质之间的接触事件的方法。 该方法包括相对于记录介质定位换能器，其中换能器包括写入器，读取器，加热器和热响应传感器。 该方法还包括向加热器施加电力以建立换能器的飞行高度; 通过所述热响应传感器提供偏置电流以产生偏置信号; 基于偏置信号测量热响应传感器的均方根（RMS）电压VRMS; 确定阈值电压VT; 并且基于VRMS大于VT，检测换能器和介质之间的接触事件。
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公开(公告)号：US20140368946A1
公开(公告)日：2014-12-18
申请号：US13919207
申请日：2013-06-17
发明人： Andy Chou , Quan Li , Chee Wee Cheng , Beng Theam Ko , Myint Ngwe
CPC分类号： G11B5/6076 , G11B5/607
摘要： A method for detecting a contact event between a transducer and a recording medium is disclosed. The method includes positioning a transducer with respect to a recording medium, where the transducer includes a writer, a reader, a heater, and a thermally responsive sensor. The method further includes applying power to the heater to establish a fly height of the transducer; supplying a bias current through the thermally responsive sensor to generate a bias signal; measuring a root mean square (RMS) voltage VRMS of the thermally responsive sensor based on the bias signal; determining a threshold voltage VT; and detecting a contact event between the transducer and the medium based on VRMS being greater than VT.
摘要翻译： 公开了一种用于检测换能器和记录介质之间的接触事件的方法。 该方法包括相对于记录介质定位换能器，其中换能器包括写入器，读取器，加热器和热响应传感器。 该方法还包括向加热器施加电力以建立换能器的飞行高度; 通过所述热响应传感器提供偏置电流以产生偏置信号; 基于偏置信号测量热响应传感器的均方根（RMS）电压VRMS; 确定阈值电压VT; 并且基于VRMS大于VT，检测换能器和介质之间的接触事件。
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公开(公告)号：US09099135B1
公开(公告)日：2015-08-04
申请号：US14644343
申请日：2015-03-11
发明人： HaoJi Bao , Aigang Feng , Myint Ngwe
IPC分类号： G11B5/596
CPC分类号： G11B5/59627 , G11B5/596 , G11B5/59683 , G11B5/59688
摘要： Methods including determining a distribution of a position error signal (PES) of a magnetoresistive head by obtaining PES data from a servo controller associated with the magnetoresistive head; determining an encroachment function of a storage disc; and determining a track density of the storage disc by considering both the PES distribution and the encroachment function.
摘要翻译： 方法包括通过从与磁阻头相关联的伺服控制器获得PES数据来确定磁阻头的位置误差信号（PES）的分布; 确定存储盘的侵占功能; 以及通过考虑PES分布和侵占功能来确定存储盘的轨道密度。
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