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公开(公告)号：US09361919B1
公开(公告)日：2016-06-07
申请号：US14874866
申请日：2015-10-05
Applicant: Seagate Technology LLC
Inventor： Binh Kim Lieu , Evgeny Kharisov , Kenneth Haapala , Raye A. Sosseh
CPC classification number: G11B5/556
Abstract: An apparatus includes a first read/write head coupled to a first micro actuator, a second read/write head coupled to a second micro actuator, an actuator and a controller. The actuator is coupled to both the first and second micro actuators. The controller is configured to position the first read/write head in response to a first micro actuator control signal and an actuator control signal. Further, the controller is configured to position the second read/write head in response to a second micro actuator control signal and the actuator control signal. The positioning of the first and second read/write heads by the controller is performed substantially simultaneously.
Abstract translation: 一种装置包括耦合到第一微型致动器的第一读/写头，耦合到第二微致动器的第二读/写头，致动器和控制器。 致动器联接到第一和第二微致动器。 控制器被配置为响应于第一微致动器控制信号和致动器控制信号来定位第一读/写头。 此外，控制器被配置为响应于第二微致动器控制信号和致动器控制信号来定位第二读/写头。 基本上同时执行由控制器定位第一和第二读/写头。
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2.发明授权公开(公告)号：US09142246B1
公开(公告)日：2015-09-22
申请号：US14511771
申请日：2014-10-10
Applicant: Seagate Technology LLC
Inventor： Jon Trantham , Christopher Thomas Cole , Raye A Sosseh , Kenneth Haapala
CPC classification number: G11B19/048 , G11B5/127 , G11B5/455
Abstract: An apparatus includes a plurality of magnetic read/write heads, a system controller and a switching network. Each of the magnetic read/write heads includes a read sensor element configured to perform a read operation and a write element configured to perform a write operation. The switching network is coupled between the plurality of magnetic read/write heads and the controller. Further, the switching network is configured to substantially simultaneously select elements from at least two of the plurality of magnetic read/write heads in response to a command from the controller such that the operations of the selected elements are performed substantially simultaneously to establish a manufacturing parameter of a disk drive.
Abstract translation: 一种装置包括多个磁读/写头，系统控制器和交换网。 每个磁读/写头包括被配置为执行读操作的读传感器元件和被配置为执行写操作的写元件。 开关网络耦合在多个磁读/写头与控制器之间。 此外，交换网络被配置为响应于来自控制器的命令，基本上同时从多个磁读/写头中的至少两个选择元件，使得所选择的元件的操作基本上同时执行以建立制造参数 的磁盘驱动器。
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公开(公告)号：US09047898B2
公开(公告)日：2015-06-02
申请号：US14165906
申请日：2014-01-28
Applicant: Seagate Technology LLC
Inventor： Dongming Liu , Kenneth Haapala , Scott E. Ryun , Lin Zhou
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。
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公开(公告)号：US10783910B2
公开(公告)日：2020-09-22
申请号：US16571475
申请日：2019-09-16
Applicant: Seagate Technology LLC
Inventor： Wenzhong Zhu , Kenneth Haapala , Jon D. Trantham
Abstract: A recording surface of a magnetic disk is divided into first and second zones. A first head of a first actuator arm assembly reads from and/or writes to the first zone exclusively. A second head of a second actuator arm assembly reads from and/or writes to the second zone exclusively. The first and second head are capable of simultaneously reading from and writing to the recording surface.
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5.发明授权Adjusting laser power to achieve equivalent track spacing for paired heads that simultaneously write to a heat-assisted recording medium 有权调整激光功率以实现同时写入热辅助记录介质的成对磁头的等效轨道间距公开(公告)号：US09495995B1
公开(公告)日：2016-11-15
申请号：US14834886
申请日：2015-08-25
Applicant: Seagate Technology LLC
Inventor： Wenzhong Zhu , Kenneth Haapala , Jon Trantham , Edward Charles Gage
CPC classification number: G11B7/1263 , G11B5/012 , G11B5/02 , G11B5/6088 , G11B20/10453 , G11B2005/0021
Abstract: A relatively larger nominal track spacing associated with a first write head is determined and a relatively smaller nominal track spacing associated with a second write head is determined. The first and second write heads simultaneously write to respective different first and second surfaces of a heat-assisted recording medium. A laser write power for a selected one of the first write head and the second write head is changed to enable the first write head and the second write head to operate at an equivalent nominal track spacing.
Abstract translation: 确定与第一写入头相关联的相对较大的标称磁道间隔，并且确定与第二写入头相关联的相对较小的标称磁道间隔。 第一和第二写入头同时写入热辅助记录介质的各个不同的第一和第二表面。 第一写入头和第二写入头中的所选择的一个的激光写入功率被改变，使得第一写头和第二写头能够以等效的标称磁道间隔工作。
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Patent Agency Ranking
公开(公告)号：US20140254040A1
公开(公告)日：2014-09-11
申请号：US14165906
申请日：2014-01-28
Applicant: Seagate Technology LLC
Inventor： Dongming Liu , Kenneth Haapala , Scott E. Ryun , Lin Zhou
IPC: G11B5/58
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。
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公开(公告)号：US10964345B1
公开(公告)日：2021-03-30
申请号：US16881355
申请日：2020-05-22
Applicant: Seagate Technology LLC
Inventor： Kenneth Haapala , Binh Kim Lieu , Evgeny Kharisov , Raye A. Sosseh
Abstract: A data storage device includes a first data storage surface and a second data storage below the first data storage surface. The data storage device also includes a first micro-actuator coupled to a first arm that supports a first head over the first data storage surface, and a second micro-actuator coupled to a second arm that supports a second head over the second data storage surface. The data storage device further includes a coarse actuator, to which the first and second arms are coupled, that positions the first head and the second head between corresponding first and second tracks on the respective first and second data storage surfaces. Micro-actuator drive circuitry finely positions the first head over the first track and the second head over the second track by concurrently driving the first micro-actuator and the second micro-actuator in opposite directions.
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公开(公告)号：US20180174613A1
公开(公告)日：2018-06-21
申请号：US15381016
申请日：2016-12-15
Applicant: Seagate Technology LLC
Inventor： Wenzhong Zhu , Kenneth Haapala , Jon D. Trantham
CPC classification number: G11B5/5578 , G11B5/012 , G11B5/4813 , G11B5/54 , G11B5/55 , G11B5/5539
Abstract: A recording surface of a magnetic disk is divided into first and second zones. A first head of a first actuator arm assembly reads from and/or writes to the first zone exclusively. A second head of a second actuator arm assembly reads from and/or writes to the second zone exclusively. The first and second head are capable of simultaneously reading from and writing to the recording surface.
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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
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。
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公开(公告)号：US20200013430A1
公开(公告)日：2020-01-09
申请号：US16571475
申请日：2019-09-16
Applicant: Seagate Technology LLC
Inventor： Wenzhong Zhu , Kenneth Haapala , Jon D. Trantham
Abstract: A recording surface of a magnetic disk is divided into first and second zones. A first head of a first actuator arm assembly reads from and/or writes to the first zone exclusively. A second head of a second actuator arm assembly reads from and/or writes to the second zone exclusively. The first and second head are capable of simultaneously reading from and writing to the recording surface.
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