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公开(公告)号：US20240221780A1
公开(公告)日：2024-07-04
申请号：US18530600
申请日：2023-12-06
Applicant: Seagate Technology LLC
Inventor： YiChao Ma , Xiong Liu , Choon Kiat Lim , Than Zaw Myint
Abstract: A data storage device includes a data storage disk, an arm, a first head, an elevator, and a sleeve. The data storage disk has a first read/write surface defining an x-y plane. The arm is attached to a pivot block, wherein the arm is movable relative to the disk. The first head is supported by the arm, wherein the first head is configured to interact with the first read/write surface. The elevator is configured to move the arm in a z direction, wherein the elevator comprises a stepper motor, a gear train, and a lead screw. The sleeve partially encases the lead screw. In another aspect, a data storage device includes a data storage disk, an arm, a first head, an elevator, and a housing encasing the gear train and attached to the pivot block.
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Patent Agency Ranking
公开(公告)号：US11900965B2
公开(公告)日：2024-02-13
申请号：US17670627
申请日：2022-02-14
Applicant: Seagate Technology LLC
Inventor： Xiong Liu , Choon Kiat Lim , June Christian Ang , Yichao Ma
IPC: G11B21/24
CPC classification number: G11B21/24
Abstract: A data storage device includes a disc, an actuator arm assembly, a servo clock, and a feedback and control system. The disc includes a top and bottom surfaces and a servo wedge. The servo wedge includes a top surface boundary and a bottom surface boundary. The actuator arm assembly supports a head pair configured for interaction with the top and bottom surfaces. The servo clock is configured to determine a top time at which the head pair encounters the top surface boundary and a bottom time at which the head pair encounters the bottom surface boundary during a disc read/write interaction. The feedback and control system is configured to determine an operation time difference; compare the operation time difference to a certification time difference correlating to a target vertical position of the actuator arm assembly relative to the disc; and move the actuator arm assembly to the target vertical position.
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公开(公告)号：US20230260547A1
公开(公告)日：2023-08-17
申请号：US17670627
申请日：2022-02-14
Applicant: Seagate Technology LLC
Inventor： Xiong Liu , Choon Kiat Lim , June Christian Ang , Yichao Ma
IPC: G11B21/24
CPC classification number: G11B21/24
Abstract: A data storage device includes a disc, an actuator arm assembly, a servo clock, and a feedback and control system. The disc includes a top and bottom surfaces and a servo wedge. The servo wedge includes a top surface boundary and a bottom surface boundary. The actuator arm assembly supports a head pair configured for interaction with the top and bottom surfaces. The servo clock is configured to determine a top time at which the head pair encounters the top surface boundary and a bottom time at which the head pair encounters the bottom surface boundary during a disc read/write interaction. The feedback and control system is configured to determine an operation time difference; compare the operation time difference to a certification time difference correlating to a target vertical position of the actuator arm assembly relative to the disc; and move the actuator arm assembly to the target vertical position.
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公开(公告)号：US09495988B1
公开(公告)日：2016-11-15
申请号：US14850560
申请日：2015-09-10
Applicant: Seagate Technology LLC
Inventor： Xiong Liu , Qiang Bi , Choon Kiat Lim , MingZhong Ding
CPC classification number: G11B5/59627 , G11B5/012 , G11B5/09 , G11B20/10009 , G11B20/1217
Abstract: Systems, apparatuses, and processes having a dependent write fault threshold are disclosed. A first sector may have a first write fault threshold and a second sector, adjacent to the first sector, may have a second write fault threshold, and the write fault thresholds can be variable based on a position error signal value of an adjacent sector. In some embodiments, the adjacent sectors may each be in an adjacent track. In other embodiments, the adjacent sectors may be in the same track. Further, a track may have two write fault thresholds, a positive direction threshold and a negative direction threshold; in some embodiments, only one direction's threshold may be variable based on the position error signal of the adjacent sector, while the opposite direction's threshold may be set to a default (e.g. pre-determined not on a sector by sector basis) value.
Abstract translation: 公开了具有从属写入故障阈值的系统，设备和过程。 第一扇区可以具有第一写入故障阈值，并且与第一扇区相邻的第二扇区可以具有第二写入故障阈值，并且写入故障阈值可以基于相邻扇区的位置误差信号值而变化。 在一些实施例中，相邻扇区可以各自在相邻的轨道中。 在其他实施例中，相邻扇区可以在相同的轨道中。 此外，轨道可以具有两个写故障阈值，正方向阈值和负方向阈值; 在一些实施例中，只有一个方向的阈值可以基于相邻扇区的位置误差信号而变化，而相反方向的阈值可以被设置为默认值（例如，不是逐扇区预先确定的）。
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公开(公告)号：US11727957B1
公开(公告)日：2023-08-15
申请号：US17837185
申请日：2022-06-10
Applicant: Seagate Technology LLC
Inventor： YiChao Ma , Xiong Liu , Than Zaw Myint , Choon Kiat Lim
CPC classification number: G11B5/4873 , G11B21/22
Abstract: A data storage device includes a stack of discs mounted on a spindle and a pivot block rotatably mounted around a shaft. The data storage device also includes an arm having first and second ends, with the first end supporting a head and the second end movably attached to the pivot block. The data storage device further includes an ultrasonic piezoelectric actuator that moves the arm along the pivot block to enable the head to interact with data storage surfaces of the discs.
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公开(公告)号：US09236073B1
公开(公告)日：2016-01-12
申请号：US14520110
申请日：2014-10-21
Applicant: Seagate Technology LLC
Inventor： Xiong Liu , Qiang Bi , Choon Kiat Lim , MingZhong Ding
CPC classification number: G11B5/59627 , G11B5/012 , G11B5/09 , G11B20/10009 , G11B20/1217
Abstract: Systems and methods are disclosed having a write fault threshold for a set of tracks. A set of tracks may have a shared write fault threshold budget, and a write fault threshold for the second track may be selected based on the shared budget reduced by an off-track position error signal value of the first track. In certain embodiments, an apparatus may comprise a processor configured to determine a position error signal value for a first data track, set a write fault threshold for a second data track adjacent to the first data track based on the position error signal, and write data to the second data track based on the write fault threshold.
Abstract translation: 公开了具有一组轨道的写入故障阈值的系统和方法。 一组轨道可以具有共享写入故障阈值预算，并且可以基于由第一轨道的偏离轨迹位置误差信号值减去的共享预算来选择用于第二轨道的写入故障阈值。 在某些实施例中，装置可以包括处理器，其被配置为确定第一数据磁道的位置误差信号值，基于位置误差信号设置与第一数据磁道相邻的第二数据磁道的写入故障阈值，以及写入数据 基于写入故障阈值到第二数据轨道。
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