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1. 发明授权

US09478248B2 Adaptive HAMR laser power data storage device 有权
标题翻译：自适应HAMR激光功率数据存储设备
公开(公告)号：US09478248B2
公开(公告)日：2016-10-25
申请号：US14512590
申请日：2014-10-13
申请人： Seagate Technology LLC
发明人： Michael A. Cordle , Franklin P. Martens , Alfredo Sam Chu , Shawn Stephen Silewski , Tim Rausch
IPC分类号： G11B5/40 , G11B20/10 , G06F11/07 , G11B20/18 , G11B5/60 , G11B19/04 , G11B5/455 , G11B5/00
CPC分类号： G11B20/10388 , G06F11/073 , G06F11/076 , G11B5/02 , G11B5/1278 , G11B5/40 , G11B5/455 , G11B5/5534 , G11B5/6088 , G11B19/048 , G11B20/1816 , G11B20/182 , G11B2005/0021
摘要： A data storage device and associated methods may provide at least a data storage medium that is separated from a heat assisted magnetic recording data writer and is connected to a controller. The controller can be configured to change a laser power of the heat assisted magnetic recording data writer in response to a tested bit error rate of a median data track of a plurality of adjacent data tracks reaching an identified threshold.
摘要翻译：数据存储装置和相关联的方法可以提供至少一个与热辅助磁记录数据写入器分离并连接到控制器的数据存储介质。控制器可以被配置为响应于达到所识别的阈值的多个相邻数据轨道的中值数据轨迹的测试误码率来改变热辅助磁记录数据写入器的激光功率。

2. 发明申请

US20160267938A1 Flex Over Suspension Fault Detection Under a Write Gate for Magnetic Disk Drives 有权
标题翻译：在磁盘驱动器的写入门下的Flex过悬挂故障检测
公开(公告)号：US20160267938A1
公开(公告)日：2016-09-15
申请号：US15067636
申请日：2016-03-11
申请人： Texas Instruments Incorporated
发明人： Rida S. Assaad , William M. Torres Escajadillo , Mark A. Wolfe
IPC分类号： G11B20/18 , G11B5/09
CPC分类号： G11B20/18 , G11B5/012 , G11B5/09 , G11B20/10018 , G11B20/182 , G11B2220/2516
摘要： A system and method for Flex Over or On Suspension (FOS) fault detection under a write gate for magnetic disk drives may employ a flex over suspension fault comparator that compares a predetermined reference threshold to a positive delta of a disk drive write head data stream and outputs a positive or negative FOS fault indication. A max/min buffer detects polarity of a disk drive read/write head and applies a positive buffered delta to the fault comparator. A transition-free window detector triggers the fault comparator to output the fault indication when a transition-free window of zero-value data bits of a predetermined length is detected from the disk drive head, and the transition-free window detector provides a fault validation signal to validate output of the fault comparator when the transition-free window of zero-value data bits of the predetermined length is detected from the disk drive head.
摘要翻译：用于磁盘驱动器的写入口下的用于Flex Over或On Suspension（FOS）故障检测的系统和方法可以采用将预定参考阈值与磁盘驱动器写入头数据流的正增量进行比较的弯曲过载故障比较器，输出正或负FOS故障指示。最大/最小缓冲区检测磁盘驱动器读/写头的极性，并向故障比较器应用正缓冲增量。当从磁盘驱动器头检测到预定长度的零值数据位的无转换窗口时，无转换窗口检测器触发故障比较器输出故障指示，并且无转换窗口检测器提供故障验证当从磁盘驱动器头检测到预定长度的零值数据位的无转换窗口时，用于确认故障比较器的输出的信号。

3. 发明授权

US09311951B1 Laser adjustment during field operation of a heat-assisted magnetic recording data storage device 有权
标题翻译：热辅助磁记录数据存储装置的现场操作时的激光调整
公开(公告)号：US09311951B1
公开(公告)日：2016-04-12
申请号：US14864202
申请日：2015-09-24
申请人： Seagate Technology LLC
发明人： Alfredo Sam Chu , Drew Michael Mader , Wenzhong Zhu , Michael A. Cordle
IPC分类号： G11B7/1263 , G11B20/18 , G11B5/02 , G11B7/1267 , G11B5/00 , G11B5/455 , G11B5/012
CPC分类号： G11B7/1267 , G11B5/012 , G11B5/02 , G11B5/455 , G11B5/5534 , G11B13/08 , G11B20/10009 , G11B20/10481 , G11B20/10509 , G11B20/182 , G11B2005/0021
摘要： During field operation of a heat-assisted magnetic recording data storage device, a laser adjustment procedure is repeatedly performed. The laser adjustment procedure involves writing, at a designated location on a recording medium at least three tracks at an unsqueezed pitch, a first track being in the middle of the at least three tracks. A first bit error rate of the first track is compared with a reference bit error rate. In response to the comparison satisfying a threshold, the laser current is swept while recording squeezed test tracks at the designated location to determine a new laser current that results in a minimum bit error rate. The new laser current is used for subsequent write operations.
摘要翻译：在热辅助磁记录数据存储装置的现场操作期间，重复执行激光调节程序。激光调整程序涉及在非压缩间距的至少三个轨道上在记录介质上的指定位置处写入至少三个轨道中间的第一轨道。将第一轨道的第一误码率与参考误码率进行比较。响应于满足阈值的比较，激光电流被扫描，同时在指定位置记录挤压的测试轨迹，以确定导致最小误码率的新的激光电流。新的激光电流用于后续写入操作。

4. 发明申请

US20160055881A1 Adaptive HAMR Laser Power Data Storage Device 有权
标题翻译：自适应HAMR激光功率数据存储设备
公开(公告)号：US20160055881A1
公开(公告)日：2016-02-25
申请号：US14512590
申请日：2014-10-13
申请人： Seagate Technology LLC
发明人： Michael A. Cordle , Franklin P. Martens , Alfredo Sam Chu , Shawn Stephen Silewski , Tim Rausch
IPC分类号： G11B20/10 , G11B20/18 , G11B5/60 , G06F11/07
CPC分类号： G11B20/10388 , G06F11/073 , G06F11/076 , G11B5/02 , G11B5/1278 , G11B5/40 , G11B5/455 , G11B5/5534 , G11B5/6088 , G11B19/048 , G11B20/1816 , G11B20/182 , G11B2005/0021
摘要： A data storage device and associated methods may provide at least a data storage medium that is separated from a heat assisted magnetic recording data writer and is connected to a controller. The controller can be configured to change a laser power of the heat assisted magnetic recording data writer in response to a tested bit error rate of a median data track of a plurality of adjacent data tracks reaching an identified threshold.
摘要翻译：数据存储装置和相关联的方法可以提供至少一个与热辅助磁记录数据写入器分离并连接到控制器的数据存储介质。控制器可以被配置为响应于达到确定的阈值的多个相邻数据轨道的中值数据轨迹的测试误码率来改变热辅助磁记录数据写入器的激光功率。

5. 发明授权

US09053747B1 Disk drive calibrating failure threshold based on noise power effect on failure detection metric 有权
标题翻译：基于噪声功率影响故障检测度量的磁盘驱动器校准故障阈值
公开(公告)号：US09053747B1
公开(公告)日：2015-06-09
申请号：US13752758
申请日：2013-01-29
申请人： Western Digital Technologies, Inc.
发明人： Baoliang Zhang , Carl E. Barlow , Chun Sei Tsai
IPC分类号： G11B5/09 , G11B20/18
CPC分类号： G11B20/182
摘要： A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of tracks, wherein each track comprises a plurality of data sectors. A test pattern is written to at least one data sector in at least one track, and the test pattern is read from the disk to generate a noisy read signal comprising added noise. An estimated data sequence is detected from the noisy read signal, and an amplitude of the added noise is increased until a failure detection metric reaches a metric threshold. A failure threshold is generated based on the amplitude of the added noise when the failure detection metric reaches the metric threshold, and a failure condition of the disk drive is predicted based on the failure threshold.
摘要翻译：公开了一种盘驱动器，其包括在包括多个轨道的盘上致动的头，其中每个轨道包括多个数据扇区。将测试图案写入至少一个轨道中的至少一个数据扇区，并且从盘读取测试图案以产生包括附加噪声的噪声读取信号。从噪声读取信号检测估计的数据序列，并且增加噪声的幅度直到故障检测度量达到度量阈值。当故障检测度量达到度量阈值时，基于附加噪声的幅度产生故障阈值，并且基于故障阈值预测磁盘驱动器的故障状况。

6. 发明授权

US09013198B1 Systems and methods for testing components of a hard disk drive system 有权
标题翻译：用于测试硬盘驱动器系统组件的系统和方法
公开(公告)号：US09013198B1
公开(公告)日：2015-04-21
申请号：US14147206
申请日：2014-01-03
申请人： Marvell International Ltd.
发明人： Saeed Azimi , Son Hong Ho
IPC分类号： G01R31/00 , G11B20/18 , G11B5/455
CPC分类号： G11B20/182 , G01R31/3004 , G01R31/31716 , G01R31/31717 , G11B5/455
摘要： A hard disk drive system including a controller and a plurality of slave testing modules located in respective components of the hard disk drive system. The controller is arranged on a printed circuit board of the hard disk drive system and is configured to transmit information from the hard disk drive system to a host device, receive information from the host device, and, using a master testing module located in the controller, provide test configuration data corresponding to the information received from the host device. Each of the plurality of slave testing modules is configured to receive the test configuration data from the master testing module and test operation of the respective component of the hard disk drive system using the test configuration data.
摘要翻译：一种硬盘驱动器系统，包括位于硬盘驱动器系统的相应部件中的控制器和多个从属测试模块。控制器设置在硬盘驱动器系统的印刷电路板上，并被配置为将信息从硬盘驱动器系统传送到主机设备，从主机设备接收信息，并且使用位于控制器中的主测试模块提供与从主机设备接收的信息对应的测试配置数据。多个从属测试模块中的每一个被配置为从主测试模块接收测试配置数据，并且使用测试配置数据来测试硬盘驱动器系统的各个组件的操作。

7. 发明授权

US08786972B2 Magnetic recording disk drive with method for recovery of data from failed data sectors 有权
标题翻译：具有从故障数据扇区恢复数据的方法的磁记录磁盘驱动器
公开(公告)号：US08786972B2
公开(公告)日：2014-07-22
申请号：US13680087
申请日：2012-11-18
申请人： HGST Netherlands B.V.
发明人： Michael Konrad Grobis , Kurt Allan Rubin
IPC分类号： G11B5/02 , G11C29/00
CPC分类号： G11B20/1889 , G11B20/182 , G11B20/1833 , G11B2020/1836 , G11B2020/185 , G11B2220/252
摘要： A magnetic recording disk drive determines the locations of defective bits in a failed data sector, and allows for the error correction code (ECC) to correctly decode the data from the sector. After a sector has failed decoding, the digitized waveform and the read channel state from the failed sector are stored in memory. A nondata pattern is written to the failed sector and read back to determine the locations of the defective data bits in the failed sector, which are then used to update the read channel state. The data pattern from the failed sector, with the identified bit error locations, is attempted to be decoded. If the decoding is successful then the sector is marked as bad and the correctly decoded data pattern is written to a different region of the disk, for example physical sectors specifically intended for use as spare sectors.
摘要翻译：磁记录盘驱动器确定故障数据扇区中的故障位的位置，并允许纠错码（ECC）正确解码扇区中的数据。在扇区解码失败之后，数字波形和来自故障扇区的读通道状态被存储在存储器中。将非数据模式写入故障扇区并读回以确定故障扇区中的有缺陷数据位的位置，然后将其用于更新读通道状态。尝试对来自故障扇区的数据模式与识别的位错误位置进行解码。如果解码成功，则扇区被标记为坏，并且将正确解码的数据模式写入到盘的不同区域，例如专门用作备用扇区的物理扇区。

8. 发明授权

US08624613B1 Integrated systems testing 有权
标题翻译：集成系统测试
公开(公告)号：US08624613B1
公开(公告)日：2014-01-07
申请号：US13762682
申请日：2013-02-08
申请人： Marvell International Ltd.
发明人： Saeed Azimi , Son Hong Ho
IPC分类号： G01R31/00
CPC分类号： G11B20/182 , G01R31/3004 , G01R31/31716 , G01R31/31717 , G11B5/455
摘要： A printed circuit board of a hard disk drive system includes a first component and a plurality of second components of the hard disk drive system. The first component is configured to transmit information to, and receive information from, a host device via a communication interface of the printed circuit board. The first component includes a first testing module operating as a master testing module. Each of the plurality of second components includes a respective second testing module operating as a slave testing module. The first component is connected to each of the plurality of second components and is configured to provide test configuration data to each of the respective second testing modules. The test configuration data corresponds to the information received from the host device, and the test configuration data enables each of the respective second testing modules to test operation of the plurality of second components.
摘要翻译：硬盘驱动器系统的印刷电路板包括硬盘驱动器系统的第一部件和多个第二部件。第一组件被配置为经由印刷电路板的通信接口向主机设备发送信息并从主机设备接收信息。第一个组件包括作为主测试模块运行的第一测试模块。多个第二组件中的每一个包括作为从测试模块操作的相应的第二测试模块。所述第一组件连接到所述多个第二组件中的每一个，并且被配置为向每个相应的第二测试模块提供测试配置数据。测试配置数据对应于从主机设备接收的信息，并且测试配置数据使得相应的第二测试模块中的每一个测试多个第二组件的操作。

9. 发明授权

US08531932B2 Adjusting method for recording condition and optical disc device 有权
标题翻译：记录条件和光盘装置的调整方法
公开(公告)号：US08531932B2
公开(公告)日：2013-09-10
申请号：US12608099
申请日：2009-10-29
申请人： Yusuke Nakamura , Koichiro Nishimura , Hiroyuki Minemura , Takahiro Kurokawa
发明人： Yusuke Nakamura , Koichiro Nishimura , Hiroyuki Minemura , Takahiro Kurokawa
IPC分类号： G11B20/10
CPC分类号： G11B20/10009 , G11B7/1267 , G11B20/10046 , G11B20/10055 , G11B20/1012 , G11B20/10212 , G11B20/10296 , G11B20/10481 , G11B20/1816 , G11B20/182 , G11B20/22 , G11B20/225 , G11B2220/2541 , H03M13/41
摘要： In a optical disc system with constraint length equal to or greater than 5, under assumption that continuous 2T count included in a predetermined evaluation bit array is denoted by i and that length of evaluation bit array of interest is given by (5+2i), judgment is passed on whether binary bit arrays include the evaluation bit array. Previously prepared are the error vectors calculated on the basis of target signals corresponding to the evaluation bit arrays and the target signals derived from the binary bit arrays, and the selection of a desired error vector is performed depending on the result of the judgment. At the same time, an equalized error vector is calculated from the target signal derived from the binary bit array and the reproduced signal, and the inner product of the equalized error vector and the selected error vector is calculated.
摘要翻译：在具有等于或大于5的约束长度的光盘系统中，假定包括在预定评估位阵列中的连续2T计数由i表示，并且感兴趣的评估位阵列的长度由（5 + 2i）给出，传递二进制位数组是否包含评估位数组的判断。先前准备的是基于对应于评估比特列的目标信号和从二进制位阵列导出的目标信号计算的误差向量，并且根据判断结果执行期望误差向量的选择。同时，根据从二进制位阵列和再现信号得到的目标信号计算均衡误差向量，并且计算均衡误差向量和所选误差向量的内积。

10. 发明申请

US20130155827A1 METHOD AND SYSTEM FOR DETERMINING THE QUALITY OF A STORAGE SYSTEM 有权
标题翻译：用于确定存储系统质量的方法和系统
公开(公告)号：US20130155827A1
公开(公告)日：2013-06-20
申请号：US13820543
申请日：2011-09-06
申请人： Dietmar Hepper , Oliver Theis , Xiaoming Chen , Herbert Hoelzemann , Gael Pilard
发明人： Dietmar Hepper , Oliver Theis , Xiaoming Chen , Herbert Hoelzemann , Gael Pilard
IPC分类号： G11B20/18
CPC分类号： G11B20/1816 , G11B7/1267 , G11B7/24 , G11B20/10481 , G11B20/182 , G11B20/20 , G11B2220/2537
摘要： In accordance with an exemplary embodiment of the present invention, a method for measuring a quality parameter of an optical storage system comprising a non-diffraction-limited optical storage medium and a readout device, the method comprising the process of deriving an impulse response of the optical storage system, and the process of analyzing the impulse response to determine at least one of a width of the impulse response and a skewness of the impulse response as the quality parameter.
摘要翻译：根据本发明的示例性实施例，一种用于测量包括非衍射受限光学存储介质和读出装置的光学存储系统的质量参数的方法，所述方法包括导出所述光学存储介质的脉冲响应的过程光存储系统和分析脉冲响应的过程，以确定脉冲响应的宽度和脉冲响应的偏度中的至少一个作为质量参数。

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