公开(公告)号：US10126326B2

公开(公告)日：2018-11-13

申请号：US14873839

申请日：2015-10-02

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Lin Zhou ,  Huiwen Liu ,  Dale Egbert ,  Jonathan A. Nelson ,  Jianxin Zhu

IPC: G01Q40/00 ,  B82Y35/00 ,  G01Q30/06

Abstract: Apparatus and associated method that contemplates performing a first atomic force microscope (AFM) scan of a first region of a sample centered at a first position at a first angle to produce a first scan image, the first AFM scan including a first component scan at a first speed and a second component scan at a second speed; performing a second AFM scan of the first region of the sample at a second angle to produce a second scan image, the second AFM scan including performing a third component scan at the first speed and a fourth component scan at the second speed; and correcting a first error in the first scan image based on the second scan image to produce a corrected image output.

公开(公告)号：US09792940B2

公开(公告)日：2017-10-17

申请号：US13840962

申请日：2013-03-15

Applicant: Seagate Technology LLC

Inventor： Lin Zhou ,  Juil Lee ,  Dongming Liu ,  Huazhou Lou

IPC: G11B5/60

CPC classification number: G11B5/607 ,  G11B5/6076

Abstract: Using a high sample rate dPES, together with pulsed heater and lock-in technique, to improve dPES SNR for contact detection between the head and media surface. Steps of powering a transducing head actuator with pulsed input signal at a select data track offset from a previously-written to data track of the storage medium, where the pulsed input signal has select amplitude and duty cycle to simulate a response signal, and further locking in an amplitude with respect to the heater frequency, can lead to a determination of level of heater power for initiating contact between the transducing head and the storage medium.

公开(公告)号：US09123371B2

公开(公告)日：2015-09-01

申请号：US14050526

申请日：2013-10-10

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Huazhou Lou ,  Lin Zhou ,  Vincent Engelkes

IPC: G11B5/02 ,  G11B27/36 ,  G11B21/02 ,  G11B5/60 ,  G11B5/48 ,  G11B5/012

CPC classification number: G11B5/6076 ,  G11B5/012 ,  G11B5/4826 ,  G11B5/6011

Abstract: In certain embodiments, a head-suspension assembly includes a resonator attached to either a head or gimbal. The resonator is configured to resonate at a predefined resonant frequency. In certain embodiments, disc drives includes a recording medium, a head-suspension assembly, and a resonator. The resonator is attached to either a head or gimbal of the head-suspension assembly. The resonator is configured to resonate at a predefined resonant frequency.

Abstract translation: 在某些实施例中，头悬挂组件包括附接到头部或万向节的谐振器。 谐振器被配置为以预定的谐振频率谐振。 在某些实施例中，盘驱动器包括记录介质，磁头 - 悬架组件和谐振器。 谐振器连接到头悬挂组件的头部或万向节。 谐振器被配置为以预定的谐振频率谐振。

公开(公告)号：US20140269241A1

公开(公告)日：2014-09-18

申请号：US13840962

申请日：2013-03-15

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Lin Zhou ,  Juil Lee ,  Dongming Liu ,  Huazhou Lou

IPC: G11B21/12

CPC classification number: G11B5/607 ,  G11B5/6076

Abstract: Using a high sample rate dPES, together with pulsed heater and lock-in technique, to improve dPES SNR for contact detection between the head and media surface. Steps of powering a transducing head actuator with pulsed input signal at a select data track offset from a previously-written to data track of the storage medium, where the pulsed input signal has select amplitude and duty cycle to simulate a response signal, and further locking in an amplitude with respect to the heater frequency, can lead to a determination of level of heater power for initiating contact between the transducing head and the storage medium.

Abstract translation: 使用高采样率dPES，连同脉冲加热器和锁定技术，以提高头部和介质表面之间的接触检测的dPES SNR。 在选择数据轨道上从脉冲输入信号偏移到存储介质的先前写入数据轨道的脉冲输入信号为脉冲输入信号供电的步骤，其中脉冲输入信号具有选择幅度和占空比以模拟响应信号，并进一步锁定 在相对于加热器频率的振幅中，可以导致确定用于启动换能头和存储介质之间的接触的加热器功率的水平。

公开(公告)号：US08638349B1

公开(公告)日：2014-01-28

申请号：US13793803

申请日：2013-03-11

Applicant: Seagate Technology LLC

Inventor： Dongming Liu ,  Kenneth Haapala ,  Scott E. Ryun ,  Lin Zhou

IPC: G11B21/12 ,  G11B5/455

CPC classification number: G11B5/581 ,  G11B5/607 ,  G11B5/6076

Abstract: An apparatus includes a head transducer configured to interact with a magnetic recording medium and a heater configured to thermally actuate the head transducer. A thermal sensor at or near the head transducer is configured to produce a sensor signal. Circuitry is coupled to the heater and configured to cause an oscillation in heater power. The heater power oscillation causes an oscillation in the sensor signal. A detector is coupled to the thermal sensor and configured to detect head-medium contact using the oscillating sensor signal and heater power.

Abstract translation: 一种装置包括：头部换能器，被配置为与磁记录介质相互作用;以及加热器，其被配置为热致动头部换能器。 在头部传感器处或附近的热传感器被配置成产生传感器信号。 电路耦合到加热器并且被配置为引起加热器功率的振荡。 加热器功率振荡导致传感器信号的振荡。 检测器耦合到热传感器并且被配置为使用振荡传感器信号和加热器功率检测头 - 介质接触。