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.

公开(公告)号：US20150162035A1

公开(公告)日：2015-06-11

申请号：US14103396

申请日：2013-12-11

Applicant: Seagate Technology LLC

Inventor： Shuang Quan Min ,  June Christian Ang ,  Tze Ming Jimmy Pang ,  Kian Keong Ooi

IPC: G11B5/55

CPC classification number: G11B5/5565 ,  G11B5/54 ,  G11B5/553

Abstract: In accordance with one embodiment of the described technology, a retract controller capacitor is charged using a back electromagnetic force voltage to produce a backup power source voltage, the retract controller capacitor is discharged to power a retract controller circuit, and an actuator arm of a storage drive is driven toward a desired location concurrently with the discharging operation.

Abstract translation: 根据所述技术的一个实施例，使用背面电磁力电压对缩回控制电容器进行充电以产生备用电源电压，放电控制器电容器被放电以为后退控制器电路供电，并且存储器的致动器臂 驱动器与放电操作同时被驱动到期望的位置。

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.

公开(公告)号：US09105290B2

公开(公告)日：2015-08-11

申请号：US14103396

申请日：2013-12-11

Applicant: Seagate Technology LLC

Inventor： Shuang Quan Min ,  June Christian Ang ,  Tze Ming Jimmy Pang ,  Kian Keong Ooi

IPC: G11B21/02 ,  G11B5/55

CPC classification number: G11B5/5565 ,  G11B5/54 ,  G11B5/553

Abstract: In accordance with one embodiment of the described technology, a retract controller capacitor is charged using a back electromagnetic force voltage to produce a backup power source voltage, the retract controller capacitor is discharged to power a retract controller circuit, and an actuator arm of a storage drive is driven toward a desired location concurrently with the discharging operation.

Abstract translation: 根据所述技术的一个实施例，使用背面电磁力电压对缩回控制电容器进行充电以产生备用电源电压，放电控制器电容器被放电以为后退控制器电路供电，并且存储器的致动器臂 驱动器与放电操作同时被驱动到期望的位置。

公开(公告)号：US08730613B1

公开(公告)日：2014-05-20

申请号：US13718082

申请日：2012-12-18

Applicant: Seagate Technology LLC

Inventor： Shuang Quan Min ,  June Christian Ang ,  Tze Ming Jimmy Pang ,  Kian Keongh Ooi ,  Paul E. Dienstbier

IPC: G11B21/12

CPC classification number: G11B21/12

Abstract: An apparatus and associated methodology for retracting a first member in relation to a second member. The first member may be selectively moveable by a first motor and the second member may be selectively moveable by a second motor that operably generates a back electromagnetic force (BEMF) voltage VBEMF. In an embodiment a retract control circuit may control movement of the first member via the first motor in response to a loss of supply power to the second motor. An embodiment of the apparatus may include a backup power source storing a voltage VB after the loss of supply power. Another embodiment of the apparatus may include retract logic operative on the retract control circuit to divide the VB from the VBEMF to energize the first motor by the VBEMF and not the VB when the VB is greater than a predetermined threshold voltage and a loss of the supply power to the second motor is detected.

Abstract translation: 一种用于相对于第二构件缩回第一构件的装置和相关联的方法。 第一构件可以由第一电动机选择性地移动，并且第二构件可以由可操作地产生反电磁力（BEMF）电压VBEMF的第二电动机选择性地移动。 在一个实施例中，回缩控制电路可以响应于对第二电动机的供电功率的损失来控制第一构件经由第一电动机的运动。 该装置的实施例可以包括在电源电力损失之后存储电压VB的备用电源。 该装置的另一个实施例可以包括在缩回控制电路上操作的缩回逻辑，以将VB与VBEMF分开，以便当VB大于预定阈值电压并且电源丢失时由VBEMF而不是VB来供电第一电机 检测到第二马达的电力。