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公开(公告)号：US11531146B2
公开(公告)日：2022-12-20
申请号：US16944005
申请日：2020-07-30
Applicant: Seagate Technology LLC
Inventor： Aditya Jain , Zoran Jandric , Dan Mohr , Kevin A. Gomez , Krishnan Subramanian
Abstract: An active metasurface includes a number of periodically-repeated unit cells arranged on a substrate, each of the unit cells including a high-index dielectric block; a heat source positioned to selectively modulate heat applied to the high-index dielectric block; and an insulating undercut region at an interface between the high-index dielectric block and the substrate.
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公开(公告)号：US11367464B2
公开(公告)日：2022-06-21
申请号：US17069424
申请日：2020-10-13
Applicant: Seagate Technology LLC
Inventor： Brett Herdendorf , Riyan Mendonsa , Krishnan Subramanian
Abstract: An apparatus with a housing which stores a plurality of data storage magazines, where each data storage magazine includes a plurality of data storage devices. The housing includes a movable carriage, the movable carriage configured to selectively couple a set of data storage devices held by a particular data storage magazine to a host device. The housing also includes a motor configured to move the movable carriage within the housing to enable the movable carriage to communicatively couple the set of data storage devices held by the particular data storage magazine to the host device.
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公开(公告)号：US20220122637A1
公开(公告)日：2022-04-21
申请号：US17072930
申请日：2020-10-16
Applicant: Seagate Technology LLC
Inventor： Riyan Mendonsa , Brett Herdendorf , Krishnan Subramanian , Jon Trantham
IPC: G11B19/28
Abstract: An apparatus includes a housing, a data storage magazine configured to hold a plurality of data storage devices, and a movable carriage disposed within the housing that is configured to selectively couple the data storage devices to a host device. The data storage magazine includes a set of magazine signal paths configured to provide signals to the plurality of data storage devices. The movable carriage includes a set of carriage signal paths configured to provide signals to the plurality of data storage devices. The apparatus includes a controller configured to power the plurality of data storage devices by selectively routing the signals via the set of magazine signal paths or the set of carriage signal paths.
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公开(公告)号：US11308984B2
公开(公告)日：2022-04-19
申请号：US16910593
申请日：2020-06-24
Applicant: Seagate Technology LLC
Inventor： Brett R. Herdendorf , Riyan Alex Mendonsa , Krishnan Subramanian
Abstract: A data storage device includes a ramp that supports at least one head, and a retraction mechanism that moves the ramp from a non-retracted position to a retracted position. The movement of the ramp is enabled by at least one of expansion or contraction of at least a portion of the retraction mechanism. The data storage device further includes a ramp retraction control module operably coupled to the retraction mechanism. The ramp retraction control module provides the retraction mechanism with a first control signal that causes the retraction mechanism to move the ramp from the non-retracted position to the retracted position.
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公开(公告)号：US20220068300A1
公开(公告)日：2022-03-03
申请号：US17473274
申请日：2021-09-13
Applicant: Seagate Technology LLC
Inventor： Brett R. Herdendorf , Riyan A, Mendonsa , Wolfgang Rosner , Jonathan Lewis Kemnitz , Krishnan Subramanian , Kurt LeRoy Erickson
Abstract: A data storage device includes a base, a shaft that extends perpendicular from the base, and a head stack assembly (HSA) having a first end to which a head is coupled and a second end that is movably mounted on the shaft. The data storage device also includes either a first actuator assembly or a second actuator assembly. The first actuator assembly includes a first coil-permanent magnet assembly that rotatably moves the HSA about the shaft, and a second coil-permanent magnet assembly that serves as a first elevator to linearly move the HSA along the shaft. The second actuator assembly includes a third coil-permanent magnet assembly that rotatably moves the HSA about the shaft, and a second elevator that linearly moves the HSA along the shaft and also moves a data storage device ramp in unison with the HSA.
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Patent Agency Ranking
公开(公告)号：US20210407538A1
公开(公告)日：2021-12-30
申请号：US16910593
申请日：2020-06-24
Applicant: Seagate Technology LLC
Inventor： Brett R. Herdendorf , Riyan Alex Mendonsa , Krishnan Subramanian
Abstract: A data storage device includes a ramp that supports at least one head, and a retraction mechanism that moves the ramp from a non-retracted position to a retracted position. The movement of the ramp is enabled by at least one of expansion or contraction of at least a portion of the retraction mechanism. The data storage device further includes a ramp retraction control module operably coupled to the retraction mechanism. The ramp retraction control module provides the retraction mechanism with a first control signal that causes the retraction mechanism to move the ramp from the non-retracted position to the retracted position.
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公开(公告)号：US20210109662A1
公开(公告)日：2021-04-15
申请号：US16948984
申请日：2020-10-08
Applicant: Seagate Technology LLC
Inventor： Riyan A. Mendonsa , Brett R. Herdendorf , Jon D. Trantham , Krishnan Subramanian , John E. Moon , Hemant Mane
Abstract: A data storage system can provide low cost and optimized performance with a cartridge housing multiple separate data storage devices and each of the data storage devices being concurrently engaged by a device player. The device player may have a processor configured to analyze mechanical performance of each data storage device and data performance of data resident in each data storage device.
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公开(公告)号：US20210020198A1
公开(公告)日：2021-01-21
申请号：US17039716
申请日：2020-09-30
Applicant: Seagate Technology LLC
Inventor： Brett R. Herdendorf , Jon D. Trantham , Anil J. Reddy , Riyan Alex Mendonsa , Krishnan Subramanian
Abstract: A data storage library includes a number of storage cartridges arranged in a rack accessed by a actuated media player. The actuated media player is adapted to move the along a plane relative to a fixed subset of the storage cartridges in the rack to and to selectively couple to each storage cartridge of the fixed subset to facilitate selective read/write access.
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公开(公告)号：US20200174103A1
公开(公告)日：2020-06-04
申请号：US16206831
申请日：2018-11-30
Applicant: Seagate Technology LLC
Inventor： Kevin A. Gomez , Zoran Jandric , Krishnan Subramanian , Pierre Asselin , Dan Mohr , Raghu Ambekar Ramachandra Rao
Abstract: An apparatus includes a detector, a light source configured to emit light, a reflecting apparatus having multiple reflective facets, and a mirror. The reflecting apparatus is configured to rotate around an axis and arranged to reflect the emitted light from the light source and reflect backscattered light. The mirror is arranged to reflect the backscattered light from the reflecting apparatus towards the detector.
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公开(公告)号：US20200099456A1
公开(公告)日：2020-03-26
申请号：US16139364
申请日：2018-09-24
Applicant: Seagate Technology LLC
Inventor： Andrzej Adam Stankiewicz , Scott Wilson Stokes , Krishnan Subramanian
IPC: H04B15/02 , H04B15/00 , H04B17/14 , H04B17/345
Abstract: An apparatus and method for mitigating noise in a waveform from a signal-producing device. The method includes receiving the waveform from the signal-producing device, and decomposing the waveform into low frequency (LF) and high frequency (HF) components. The method also includes determining an instant amplitude of the HF component, and employing the instant amplitude of the HF component and possibly the LF component to obtain a noise correction value for the LF component. The method further includes adding the obtained noise correction value to the LF component to obtain an output signal.
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