公开(公告)号：US11281184B2

公开(公告)日：2022-03-22

申请号：US16455304

申请日：2019-06-27

Applicant: Seagate Technology LLC

Inventor： Riyan Alex Mendonsa ,  Brett R. Herdendorf ,  Anil J. Reddy ,  Iraj Jabbari

IPC: G11B33/08 ,  G05B19/4097 ,  G11B33/12 ,  G11B33/14 ,  H02K5/16

Abstract: An apparatus such as a hard disk drive includes a base deck, which includes a base member and sidewalls extending from the base member. The base member and the sidewalls both include a non-metallic material and a metallic stiffening material.

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

IPC: G11B15/68 ,  G11B20/10

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.

公开(公告)号：US11875830B2

公开(公告)日：2024-01-16

申请号：US17728415

申请日：2022-04-25

Applicant: Seagate Technology LLC

Inventor： Matthew Aaron Carper ,  Anil J. Reddy ,  Brett R. Herdendorf ,  Riyan Alex Mendonsa

IPC: G11B5/60 ,  G11B5/48

CPC classification number: G11B5/6058 ,  G11B5/4833

Abstract: A data storage device (DSD) includes a base-deck, a disc above the base-deck, and a shaft extending perpendicular from the base-deck. The DSD also includes a head stack assembly (HSA) including a head gimbal assembly having a load beam and a head at a first end of the HSA. The head interacts with a surface of the disc. The HSA also includes a second end movably mounted on the shaft. The DSD additionally includes an elevator that linearly moves the HSA along the shaft to adjust a distance between the load beam and the surface of the disc in response to receiving a feedback signal associated with the interaction of the head with the surface of the disc. The feedback signal is one of a plurality of feedback signals employed by the elevator to adjust the distance between the load beam and the surface of the disc.

公开(公告)号：US20230005504A1

公开(公告)日：2023-01-05

申请号：US17856321

申请日：2022-07-01

Applicant: Seagate Technology LLC

Inventor： Kevin A. Gomez ,  Aditya Jain ,  Anil J. Reddy ,  Todd Michael Lammers

IPC: G11B13/04 ,  G02F1/21 ,  G02F1/01 ,  H05K1/02

Abstract: Apparatus and method for transferring data in a data storage system, such as but not limited to a hard disc drive (HDD). An optical link is provided between an analog front end (AFE) of a data storage device controller circuit (SOC) and a preamplifier/driver circuit (preamp) mounted to a rotary actuator to transfer an analog domain signal. A selected component is extracted from the signal using a modulation element such as a micro-resonance ring (MRR) or a Mach-Zehnder Interferometer Modulation (MZM) device. The extracted component is forwarded to a processing circuit to facilitate a transfer of data between a local memory and a non-volatile memory (NVM). The optical link includes a flexible portion in a flex circuit affixed to the rotary actuator and which supports the preamp. Multiplexed read, write, and power control signals are concurrently transmitted via the optical link. The link can concurrently service multiple head-disc assemblies (HDAs).

公开(公告)号：US20240310866A1

公开(公告)日：2024-09-19

申请号：US18603512

申请日：2024-03-13

Applicant: Seagate Technology LLC

Inventor： Vivek Krishnamurthy ,  Aditya Jain ,  Richard Charles Alexander Pitwon ,  Anil J. Reddy

IPC: G06E3/00 ,  G02B1/00

CPC classification number: G06E3/00 ,  G02B1/005

Abstract: A laser-based computing system includes a two-dimensional photonic crystal surface emitting laser (PCSEL) array including a plurality of PCSEL emitters located in a first layer, each emitter oriented in a direction perpendicular to a plane formed by the first layer, where the plurality of PCSEL emitters form a preset pattern within the first layer, and a controller operatively connected to the plurality of PCSEL emitters, the controller configured to modulate phase and/or amplitude of a beam emitted by a PCSEL emitter of the plurality of PCSEL emitters.

公开(公告)号：US20220254372A1

公开(公告)日：2022-08-11

申请号：US17728415

申请日：2022-04-25

Applicant: Seagate Technology LLC

Inventor： Matthew Aaron Carper ,  Anil J. Reddy ,  Brett R. Herdendorf ,  Riyan Alex Mendonsa

IPC: G11B5/60

Abstract: A data storage device (DSD) includes a base-deck, a disc above the base-deck, and a shaft extending perpendicular from the base-deck. The DSD also includes a head stack assembly (HSA) including a head gimbal assembly having a load beam and a head at a first end of the HSA. The head interacts with a surface of the disc. The HSA also includes a second end movably mounted on the shaft. The DSD additionally includes an elevator that linearly moves the HSA along the shaft to adjust a distance between the load beam and the surface of the disc in response to receiving a feedback signal associated with the interaction of the head with the surface of the disc. The feedback signal is one of a plurality of feedback signals employed by the elevator to adjust the distance between the load beam and the surface of the disc.

公开(公告)号：US20210018691A1

公开(公告)日：2021-01-21

申请号：US16513455

申请日：2019-07-16

Applicant: Seagate Technology LLC

Inventor： Zoran Jandric ,  Kevin A. Gomez ,  Dan Mohr ,  Anil J. Reddy ,  Aditya Jain ,  Krishnan Subramanian

IPC: G02B6/35 ,  H04Q11/00

Abstract: Systems, devices, and methods may use input/output (I/O) apparatus and an optical switching medium to switch, or route, optical data signals. The optical switching medium may include a plurality of optical switching regions. The I/O apparatus may transmit optical data signals to and receive optical data signals from the optical switching medium to provide switching functionality.

公开(公告)号：US20200302966A1

公开(公告)日：2020-09-24

申请号：US16358255

申请日：2019-03-19

Applicant: Seagate Technology LLC

Inventor： Brett R. Herdendorf ,  Jon D. Trantham ,  Anil J. Reddy ,  Riyan Alex Mendonsa ,  Krishnan Subramanian

IPC: G11B15/68 ,  G11B20/10

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.

公开(公告)号：US20240336966A1

公开(公告)日：2024-10-10

申请号：US18607991

申请日：2024-03-18

Applicant: Seagate Technology LLC

Inventor： Vivek Krishnamurthy ,  Aditya Jain ,  Gemma Mendonsa ,  Anil J. Reddy

IPC: C12Q1/6869

CPC classification number: C12Q1/6869

Abstract: A laser-based molecular sequencing system includes a two-dimensional photonic crystal surface emitting laser (PCSEL) array including a plurality of PCSEL devices located in a first layer, each PCSEL device oriented in a direction perpendicular to the first layer. The system also includes a controller configured to modulate a bias on at least one PCSEL device of the plurality of PCSEL devices, the modulation configured to selectively operate each PCSEL device as an emitter or detector at a point in time based on the bias.

公开(公告)号：US11335373B1

公开(公告)日：2022-05-17

申请号：US17181804

申请日：2021-02-22

Applicant: Seagate Technology LLC

Inventor： Krishnan Subramanian ,  Aditya Jain ,  Riyan Alex Mendonsa ,  Anil J. Reddy ,  Edward Charles Gage

IPC: G11B11/105 ,  G11B7/1387 ,  G11B7/24067 ,  G11B7/127 ,  G11B7/13 ,  G11B5/00

Abstract: 3D optical data storage refers to forms of optical data storage in which information can be recorded and/or read with 3D resolution. 3D optical media are generally limited in areal density by the diffraction limit of laser light used to read and/or write data to and/or from the optical media. It is thus advantageous to find ways to store data on 3D optical media with a spot size below the diffraction limit of an associated laser reader to further increase areal density of the optical media. A hybrid approach that utilizes plasmon technology to access a surface layer of the 3D optical media with an extremely small spot size and photon technology to access interior layers of the 3D optical media with a larger spot size may substantially increase overall data density of the 3D optical media.