公开(公告)号：US20240112711A1

公开(公告)日：2024-04-04

申请号：US17937620

申请日：2022-10-03

Applicant: Seagate Technology LLC

Inventor： Riyan Alex Mendonsa ,  Brett R. Herdendorf ,  Jon D. Trantham

IPC: G11C11/16

CPC classification number: G11C11/161 ,  G11C11/1673 ,  G11C11/1675

Abstract: A data storage apparatus is presented that includes a well structure comprising a suspension medium, and a magnetic particle disposed in at least a portion of the well structure. A control system is configured to represent a data state corresponding to a positioning of the magnetic particle within the well structure, the magnetic particle moved responsive to an applied field and a present material state of the well structure. Various addressable arrays of well structures and associated control elements can be established to form data storage devices.

公开(公告)号：US11948614B2

公开(公告)日：2024-04-02

申请号：US17676664

申请日：2022-02-21

Applicant: Seagate Technology LLC

Inventor： Xiaomin Yang ,  Kim Yang Lee ,  Thomas Young Chang ,  ShuaiGang Xiao ,  Sha Zhu

IPC: G11B5/84 ,  G03F7/00 ,  G03F7/36

CPC classification number: G11B5/84 ,  G03F7/0002 ,  G03F7/36

Abstract: The present disclosure relates to methods of manufacturing at least a portion of a magnetic layer of a magnetic recording disk. The methods include forming a plurality of sacrificial, discrete structures via imprint lithography. The sacrificial, discrete structures are used to form a plurality of three-dimensional segregant structures in a magnetic layer of the magnetic recording disk. The present disclosure also relates to corresponding magnetic recording disks.

公开(公告)号：US11929104B2

公开(公告)日：2024-03-12

申请号：US17675367

申请日：2022-02-18

Applicant: Seagate Technology LLC

Inventor： Lihong Zhang ,  Xiong Liu

IPC: G11B5/024 ,  G11B5/09 ,  G11B5/55 ,  G11B5/325

CPC classification number: G11B5/024 ,  G11B5/09 ,  G11B5/5521 ,  G11B5/325

Abstract: A recording head has a magnetic write transducer having a first crosstrack width operable to write a single track of data at a time to a magnetic disk. The recording head also has a magnetic erase transducer separate from the magnetic write transducer. The magnetic erase transducer has a second crosstrack width operable to simultaneously erase multiple tracks of data from the magnetic disk.

公开(公告)号：US11925739B2

公开(公告)日：2024-03-12

申请号：US17076610

申请日：2020-10-21

Applicant: Seagate Technology LLC

Inventor： Thomas Y. Chang

IPC: A61M1/34 ,  A61M1/16 ,  A61M1/30 ,  B01D61/28 ,  B01D63/08

CPC classification number: A61M1/34 ,  A61M1/1631 ,  A61M1/1633 ,  A61M1/1654 ,  A61M1/1678 ,  A61M1/301 ,  A61M1/3417 ,  B01D61/28 ,  B01D63/082 ,  B01D63/084 ,  B01D63/085 ,  B01D63/087 ,  A61M2205/04 ,  A61M2205/75 ,  A61M2206/10 ,  A61M2206/16 ,  A61M2209/088 ,  A61M2210/1082 ,  B01D2313/205

Abstract: An implantable or wearable kidney enclosure that is cylindrical, ovoid, or otherwise non-angular e.g., not rectangular or cuboid), having a circular or oval hemofilter that provides a blood flow pattern from an internal, central artery source radially outwards. Due to the efficient flow of the circular filter design, the enclosure can be made in a cylindrical low profile shape, resulting in a compact enclosure highly suitable for implantable and wearable dialysis applications.

公开(公告)号：US11908504B2

公开(公告)日：2024-02-20

申请号：US17719637

申请日：2022-04-13

Applicant: Seagate Technology LLC

Inventor： Jon D. Trantham ,  Praveen Viraraghavan ,  John W. Dykes ,  Ian J. Gilbert ,  Sangita Shreedharan Kalarickal ,  Matthew J. Totin ,  Mohamad El-Batal ,  Darshana H. Mehta

IPC: G11C11/22 ,  H10B51/20 ,  H10B51/30

CPC classification number: G11C11/223 ,  G11C11/2273 ,  G11C11/2275 ,  H10B51/20 ,  H10B51/30

Abstract: A memory device formed of ferroelectric field effect transistors (FeFETs). The memory device can be used as a front end buffer, such as in a data storage device having a non-volatile memory (NVM). A controller can be configured to transfer user data between the NVM and an external client (host) via the buffer. The FeFETs can be arranged in a two-dimensional (2D) or a three-dimensional (3D) array. A monitor circuit can be used to monitor operation of the FeFETs. An optimization controller can be used to adjust at least one operational parameter associated with the FeFETs responsive to the monitored operation by the monitor circuit. The FeFETs may require a refresh operation after each read operation. A power down sequence can involve a read operation without a subsequent refresh operation to wipe the FeFETs, the read operation jettisoning the data read from the buffer memory.

公开(公告)号：US11908499B1

公开(公告)日：2024-02-20

申请号：US17809722

申请日：2022-06-29

Applicant: Seagate Technology LLC

Inventor： Mark Gubbins ,  Christopher Neil Harvey ,  Aidan Goggin ,  Fadi El Hallak ,  Reshma Anamari Mohandas ,  Bryn John Howells ,  Scott Eugene Olson

IPC: G11B5/09 ,  G11B5/60 ,  G11B5/31 ,  G11B13/08 ,  G11B7/126 ,  G11B5/48 ,  G11B5/00

CPC classification number: G11B5/6088 ,  G11B5/314 ,  G11B5/4866 ,  G11B7/126 ,  G11B13/08 ,  G11B2005/0021

Abstract: A heat-assisted magnetic recording head includes a laser, a near-field transducer, a primary waveguide, a secondary waveguide, and a photodiode. The laser is configured to emit electromagnetic radiation. The near-field transducer is configured to focus and emit an optical near-field. The primary waveguide configured to receive the electromagnetic radiation and propagate the electromagnetic radiation toward and proximal to the near-field transducer. The secondary waveguide configured to receive a portion of the electromagnetic radiation from the primary waveguide. The photodiode configured to receive the portion of the electromagnetic radiation from the secondary waveguide and emit a signal that represents a magnitude of the electromagnetic radiation that the laser emits.

公开(公告)号：US11907392B2

公开(公告)日：2024-02-20

申请号：US17318045

申请日：2021-05-12

Applicant: Seagate Technology LLC

Inventor： Nolan Miranda ,  Vipin Singh Sehrawat ,  Foo Yee Yeo

IPC: G06F21/62 ,  G06F21/55 ,  G06F16/248 ,  G06F16/28 ,  G06F16/242

CPC classification number: G06F21/6227 ,  G06F16/248 ,  G06F16/2448 ,  G06F16/284 ,  G06F21/556

Abstract: A function is decomposed into a plurality of function shares. The function returns a Boolean result based on whether an input y satisfies a query on a data set. The function shares hide the function from non-collaborating entities that separately execute the function shares. Each of the functions shares are sent to one of a plurality of servers having a same data set. The function shares are executed on the data set at the servers to obtain a respective plurality of shares. A conditional disclosure of secrets operation is simulated on the shares and the input y. The conditional disclosure of secrets operation uses a secret known to at least one of the servers, and further uses a source of randomness shared between the servers. A Boolean value corresponding to the Boolean result is returned based on the conditional disclosure of secrets operation returning the secret.

公开(公告)号：US20240057299A1

公开(公告)日：2024-02-15

申请号：US17885376

申请日：2022-08-10

Applicant: Seagate Technology LLC

Inventor： Deepak Nayak ,  Hemant Mohan

IPC: H05K7/20

CPC classification number: H05K7/20836 ,  H05K7/20172 ,  H05K7/20718

Abstract: A data storage system includes an enclosure, a printed circuit board positioned in the enclosure, an integrated circuit mechanically and electrically coupled to the printed circuit board, temperature sensors configured to generate temperature signals in response to measured temperatures, an air mover coupled to the enclosure and including a motor rotatable in a clockwise direction and a counterclockwise direction, and a controller configured to cause rotation of the motor in either the clockwise direction or the counterclockwise direction depending on the temperature signals.

公开(公告)号：US11900970B2

公开(公告)日：2024-02-13

申请号：US17162218

申请日：2021-01-29

Applicant: Seagate Technology LLC

Inventor： Jason Bellorado ,  Marcus Marrow ,  Zheng Wu

IPC: G11B5/09 ,  G06F13/38 ,  H03M1/12 ,  G11B5/00

CPC classification number: G11B5/09 ,  G06F13/385 ,  H03M1/12 ,  G11B2005/0013

Abstract: Systems and methods are disclosed for magnetoresistive asymmetry compensation using a hybrid analog and digital compensation scheme. In certain embodiments, a method may comprise receiving an analog signal at a continuous-time front end (CTFE) circuit, and performing, via the CTFE circuit, first magnetoresistive asymmetry (MRA) compensation on the analog signal to adjust the dynamic range of the analog signal based on an input range of an analog-to-digital converter (ADC). The method may further comprise converting the analog signal to a digital sample sequence via the ADC, and performing, via a digital MRA compensation circuit, second MRA compensation to correct residual MRA in the digital sample sequence. Offset compensation may also be performed in both the analog and digital domains.

公开(公告)号：US11900963B2

公开(公告)日：2024-02-13

申请号：US17807248

申请日：2022-06-16

Applicant: Seagate Technology LLC

Inventor： Yuhang Cheng ,  Tae-Woo Lee ,  Michael A Seigler ,  Yang Wu

IPC: G11B13/08 ,  G11B5/31 ,  G11B5/48 ,  G11B5/60 ,  G11B5/00

CPC classification number: G11B13/08 ,  G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A heat-assisted magnetic recording head comprises a near-field transducer (NFT). The NFT comprises a near-field emitter configured to heat a surface of a magnetic disk, and a hybrid plasmonic disk. The hybrid plasmonic disk comprises a plasmonic region and a thermal region. The plasmonic region comprises a first material or alloy that is a plasmonic material or alloy. The thermal region comprises a second material or alloy that is different than the first material or alloy.