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公开(公告)号：US09842047B2
公开(公告)日：2017-12-12
申请号：US14688515
申请日：2015-04-16
Applicant: Seagate Technology LLC
Inventor： Kaizhong Gao , Wenzhong Zhu , Tim Rausch , Edward Gage
CPC classification number: G06F12/0238 , G06F2212/1044 , G06F2212/152 , G06F2212/21 , G06F2212/70 , G11B5/012 , G11B20/1217 , G11B2020/1238 , G11B2020/1267 , G11B2020/1292
Abstract: A storage device controller addresses consecutively-addressed portions of incoming data to consecutive data tracks on a storage medium and writes the consecutively-addressed portions to the consecutive data tracks in a non-consecutive track order. In one implementation, the storage device controller reads the data back from the consecutive data tracks in a consecutive address order in a single sequential read operation.
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12.发明授权公开(公告)号：US09805749B1
公开(公告)日：2017-10-31
申请号：US15094055
申请日：2016-04-08
Applicant: Seagate Technology LLC
Inventor： Chuen Buan Lee , Tim Rausch , Xiong Liu , Qiang Bi
CPC classification number: G11B5/4826 , G11B5/105 , G11B5/4833 , G11B5/484 , G11B5/4866 , G11B5/4873 , G11B2005/0021
Abstract: An apparatus comprises a heat-assisted magnetic recording drive which includes an enclosure having a base and a cover. The drive includes a magnetic recording disk and a head gimbal assembly proximate one of the base and the cover. The HGA supports a slider assembly comprising a laser diode unit. The LDU projects away from the HGA towards one of the base and the cover. An arcuate channel is provided in one of the base and the cover and dimensioned to receive a distal portion of the LDU. The channel has a length that accommodates the distal portion of the LDU along a stroke of the HGA.
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公开(公告)号：US20160343395A1
公开(公告)日：2016-11-24
申请号：US14716148
申请日：2015-05-19
Applicant: Seagate Technology LLC
Inventor： Tim Rausch , Tatsuya Shimizu , Wai Yeon Lai , Kai Chiu Cheung
IPC: G11B7/1263 , G11B5/60
CPC classification number: G11B5/607 , G11B5/6088 , G11B2005/0021
Abstract: A heater power of a heat-assisted magnetic recording head is set to an initial power to induce an initial head-medium clearance. For a plurality of iterations, a heater power at an optimum laser power is determined that achieve a target clearance. If differences in the heater power and optimum laser power between the two subsequent iterations are below a threshold, the iterations are stopped and the heater power and the optimum laser power for one of the two subsequent iterations is used as an operational heater power and laser power for the heat-assisted magnetic recording head.
Abstract translation: 将热辅助磁记录头的加热器功率设定为初始功率以引起初始头 - 介质间隙。 对于多次迭代，确定达到目标间隙的最佳激光功率的加热器功率。 如果加热器功率和两次后续迭代之间的最佳激光功率的差异低于阈值，则停止迭代，并且将两个后续迭代之一的加热器功率和最佳激光功率用作操作加热器功率和激光功率 用于热辅助磁记录头。
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公开(公告)号：US20160148630A1
公开(公告)日：2016-05-26
申请号：US14833342
申请日：2015-08-24
Applicant: Seagate Technology LLC
Inventor： Tim Rausch
IPC: G11B5/56
CPC classification number: G11B20/1889 , G11B5/012 , G11B5/09 , G11B5/59633 , G11B5/59638 , G11B5/6088 , G11B11/10506 , G11B11/10515 , G11B11/10521 , G11B11/10595 , G11B20/12 , G11B20/1217 , G11B20/1833 , G11B27/3027 , G11B2005/0021 , G11B2020/1222 , G11B2020/1232 , G11B2020/1238 , G11B2020/1292
Abstract: A storage device includes a controller that selects an offset when preparing to write data to a target data track. The offset defines a position for a write head relative to a center of the target track and is selected based on a radial position of a write head at the target data track.
Abstract translation: 存储装置包括控制器，其在准备向目标数据轨道写入数据时选择偏移量。 偏移量定义写头相对于目标轨道的中心的位置，并且基于写入头在目标数据轨道的径向位置来选择。
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15.发明授权公开(公告)号：US09349415B1
公开(公告)日：2016-05-24
申请号：US14716171
申请日：2015-05-19
Applicant: Seagate Technology LLC
Inventor： Drew Michael Mader , Alfredo Sam Chu , Tim Rausch
IPC: G11B27/36
CPC classification number: G11B27/36 , G11B5/012 , G11B5/59627 , G11B2005/0021
Abstract: A signal is recorded over at least part of a track a heat-assisted recording medium via a heat-assisted magnetic recording head. Symmetry of a cross-track profile of the recorded signal is determined, and the recording head is qualified based on the symmetry of the cross-track profile.
Abstract translation: 通过热辅助磁记录头将信号记录在至少部分轨道上的热辅助记录介质上。 确定记录信号的交叉轨道轮廓的对称性，并且基于交叉轨道轮廓的对称性对记录头进行鉴定。
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Patent Agency Ranking
公开(公告)号：US20150332725A1
公开(公告)日：2015-11-19
申请号：US14278377
申请日：2014-05-15
Applicant: Seagate Technology LLC
Inventor： Tim Rausch , Jon D. Trantham , John W. Dykes , Won Choul YANG
IPC: G11B7/1263
CPC classification number: G11B7/1263 , G11B5/012 , G11B5/02 , G11B7/00736 , G11B7/1267 , G11B19/046 , G11B2005/0021
Abstract: A method of controlling laser output in a heat assisted magnetic recording device can be performed by control circuitry in a data storage device. The method includes measuring a temperature, measuring laser output power of a laser, determining a power error by subtracting an optimal laser output power from the measured laser output power and comparing the power error to at least one threshold to determine whether an applied current to the laser needs to be adjusted. The at least one threshold is related to how great the power error can be while maintaining the integrity of data on a recording medium.
Abstract translation: 控制热辅助磁记录装置中的激光输出的方法可由数据存储装置中的控制电路执行。 该方法包括测量温度，测量激光器的激光输出功率，通过从所测量的激光输出功率减去最佳激光输出功率并将功率误差与至少一个阈值进行比较来确定功率误差，以确定施加到 激光需要调整。 至少一个阈值与维持记录介质上数据完整性的功率误差有多大关系。
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公开(公告)号：US08804272B1
公开(公告)日：2014-08-12
申请号：US13932398
申请日：2013-07-01
Applicant: Seagate Technology LLC
Inventor： Housan Dakroub , Edward Charles Gage , Tim Rausch
IPC: G11B21/02
CPC classification number: G11B5/6076 , G11B5/6005 , G11B5/607 , G11B11/10554 , G11B20/10009
Abstract: A transducer is configured to interact with a magnetic storage medium, a first channel comprises a first sensor and first circuitry configured to adjust a plurality of first channel parameters, and a second channel comprises a second sensor and second circuitry configured to adjust a plurality of second channel parameters. The first and second channel parameters are independently adjustable by the first and second circuitry, respectively. A detector is coupled to the first and second channels, and configured to detect a head-medium interface event.
Abstract translation: 换能器被配置为与磁存储介质相互作用，第一通道包括第一传感器和配置成调整多个第一通道参数的第一电路，第二通道包括第二传感器和第二电路，其被配置为调整多个第二通道参数 通道参数。 第一和第二通道参数分别由第一和第二电路独立地调节。 检测器耦合到第一和第二通道，并且被配置为检测头 - 介质接口事件。
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公开(公告)号：US11049515B1
公开(公告)日：2021-06-29
申请号：US16870538
申请日：2020-05-08
Applicant: Seagate Technology LLC
Inventor： Zengyuan Liu , Edward Charles Gage , Tim Rausch , Stephanie Hernandez
Abstract: A recording head for writing data on tracks of a data storage medium is provided. The recording head includes a writer having a write pole and a trailing shield. The write pole includes a pole tip configured to write on the tracks of the data storage medium. The recording head also includes first and second writing-assistance wires positioned between the pole tip and the trailing shield in a down-track direction to enable a writing-assistance current to be provided to produce an assist magnetic field that augments a write field produced by the write pole.
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公开(公告)号：US11037597B1
公开(公告)日：2021-06-15
申请号：US16915391
申请日：2020-06-29
Applicant: Seagate Technology LLC
Inventor： Ian James Gilbert , Peng Peng , Tim Rausch , Jan-Ulrich Thiele
IPC: G11B11/105 , G11B20/10 , G11B20/18 , G11B5/73 , G11B5/00 , G11B7/1267 , G11B7/126 , G11B7/1263
Abstract: Two or more different elapsed time values are determined between transitions of a data signal applied to a magnetic write transducer of a heat-assisted magnetic recording apparatus. Two or more different power values of the laser are respectively associated with the two or more different elapsed time values. The two or more different power levels are selected to reduce differences between track widths of recorded marks having the two or more different elapsed time values.
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公开(公告)号：US10026420B1
公开(公告)日：2018-07-17
申请号：US14950741
申请日：2015-11-24
Applicant: Seagate Technology LLC
Inventor： Tim Rausch , Jon D. Trantham , John W. Dykes
Abstract: In a data storage device where a data writer is predicted to fail, cold data can be identified and subsequently moved to a data storage medium corresponding to the failing data writer. The data writer may be positioned proximal the data storage medium where data is stored. A controller can predict the failure in the data writer and transition all the data in the data storage medium to a read only status.
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