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公开(公告)号：US20190385094A1
公开(公告)日：2019-12-19
申请号：US16010516
申请日：2018-06-18
发明人： Michael Alex , Xinzhi Xing
摘要： Technology for improved data detection using machine learning may include a method in which an analog read signal comprising data read from a non-transitory storage medium of the data storage device is received. The analog read signal is processed into a plurality of digital samples. A digital sample from the plurality of digital samples is classified into a category from a plurality of categories using a machine learning algorithm for at least some of the plurality of digital samples. The plurality of digital samples is then decoded based on at least some of the predicted categories.
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2.发明授权Disk drive destabilizing magnetization of test pattern using head laser to enhance defect detection 有权磁盘驱动器使用头部激光器来不稳定测试图案的磁化强化缺陷检测公开(公告)号：US08773957B1
公开(公告)日：2014-07-08
申请号：US13780847
申请日：2013-02-28
发明人： Eric J. Champion , Kroum S. Stoev , Michael Alex
IPC分类号： G11B11/00
CPC分类号： G11B20/182 , G11B5/012 , G11B5/5534 , G11B2005/0021
摘要： A disk drive is disclosed comprising a head actuated over a disk, wherein the head comprises a write element, a read element, and a laser operable to heat the disk while writing data to the disk. The disk is magnetized by writing a first test pattern to the disk using the write element and a first power applied to the laser. The magnetization of the first test pattern is destabilized by heating the disk using a second power applied to the laser, wherein the second power is less than the first power. After destabilizing the magnetization of the first test pattern, the first test pattern is read with the read element to generate a read signal, and the read signal is evaluated to detect a defect on the disk.
摘要翻译： 公开了一种磁盘驱动器，其包括在磁盘上致动的磁头，其中磁头包括写入元件，读取元件和可操作以在将数据写入磁盘的同时加热磁盘的激光器。 通过使用写入元件将第一测试图案写入盘并通过施加到激光器的第一功率来磁化磁盘。 通过使用施加到激光器的第二功率加热盘来使第一测试图案的磁化稳定，其中第二功率小于第一功率。 在使第一测试图案的磁化变得不稳定之后，用读取元件读取第一测试图案以产生读取信号，并且评估读取信号以检测盘上的缺陷。
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公开(公告)号：US11348037B2
公开(公告)日：2022-05-31
申请号：US17375987
申请日：2021-07-14
发明人： Michael Alex , Xinzhi Xing
摘要： Technology for improved data detection using machine learning may include a method in which an analog read signal comprising data read from a non-transitory storage medium of the data storage device is received. The analog read signal is processed into a plurality of digital samples. A digital sample from the plurality of digital samples is classified into a category from a plurality of categories using a machine learning algorithm for at least some of the plurality of digital samples. The plurality of digital samples is then decoded based on at least some of the predicted categories.
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公开(公告)号：US11080621B2
公开(公告)日：2021-08-03
申请号：US16010516
申请日：2018-06-18
发明人： Michael Alex , Xinzhi Xing
摘要： Technology for improved data detection using machine learning may include a method in which an analog read signal comprising data read from a non-transitory storage medium of the data storage device is received. The analog read signal is processed into a plurality of digital samples. A digital sample from the plurality of digital samples is classified into a category from a plurality of categories using a machine learning algorithm for at least some of the plurality of digital samples. The plurality of digital samples is then decoded based on at least some of the predicted categories.
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公开(公告)号：US20210390459A1
公开(公告)日：2021-12-16
申请号：US17375987
申请日：2021-07-14
发明人： Michael Alex , Xinzhi Xing
摘要： Technology for improved data detection using machine learning may include a method in which an analog read signal comprising data read from a non-transitory storage medium of the data storage device is received. The analog read signal is processed into a plurality of digital samples. A digital sample from the plurality of digital samples is classified into a category from a plurality of categories using a machine learning algorithm for at least some of the plurality of digital samples. The plurality of digital samples is then decoded based on at least some of the predicted categories.
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6.发明授权Data storage device detecting media defects by writing opposite polarity test pattern 有权数据存储设备通过写入相反的极性测试图案来检测介质缺陷公开(公告)号：US09171575B1
公开(公告)日：2015-10-27
申请号：US14312431
申请日：2014-06-23
CPC分类号： G11B20/182 , G11B5/012 , G11B5/024 , G11B5/59616 , G11B20/10009 , G11B20/1889 , G11B27/36 , G11B2220/2516
摘要： A data storage device is disclosed comprising a disk comprising a plurality of tracks, and a head actuated over the disk. A first test pattern having a first polarity is written to a target track, and the first test pattern is read to generate a first read signal. The first test pattern is overwritten with a second test pattern having a second polarity opposite the first polarity, and the second test pattern is read to generate a second read signal. A defect in the target track is detected based on the first read signal and the second read signal.
摘要翻译： 公开了一种数据存储装置，包括包括多个轨道的盘，以及在盘上致动的头。 将具有第一极性的第一测试图案写入目标轨迹，并且读取第一测试图案以产生第一读取信号。 第一测试图案被具有与第一极性相反的第二极性的第二测试图案覆盖，并且读取第二测试图案以产生第二读取信号。 基于第一读取信号和第二读取信号来检测目标轨迹中的缺陷。
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7.发明授权Energy assisted magnetic recording medium capable of suppressing high DC readback noise 有权能量辅助磁记录介质能够抑制高回波的高噪声公开(公告)号：US09001630B1
公开(公告)日：2015-04-07
申请号：US14260512
申请日：2014-04-24
CPC分类号： G11B5/64 , G11B5/00 , G11B5/66 , G11B5/82 , G11B20/10481 , G11B2005/0021
摘要： A perpendicular magnetic recording (PMR) disk used in energy assisted magnetic recording drives is described. The PMR disk includes a substrate, a magnetic recording layer disposed above the substrate, an exchange coupling layer disposed above the magnetic recording layer, and a capping layer disposed above the exchange coupling layer. The capping layer has a Curie temperature greater than the Curie temperature of the magnetic recording layer.
摘要翻译： 描述了用于能量辅助磁记录驱动器的垂直磁记录（PMR）盘。 PMR盘包括衬底，设置在衬底上的磁记录层，设置在磁记录层上方的交换耦合层和设置在交换耦合层上方的覆盖层。 封盖层的居里温度大于磁记录层的居里温度。
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