Patents by Inventor Kirill A. Rivkin

Kirill A. Rivkin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230168860
    Abstract: A magnetic processing unit (“MPU”) includes a magnetic element with one or more input channels and one or more output channels. The magnetic element can acquire magnetic arrangement configured to perform a predetermined operation on the received input signal and provide a resulting output signal.
    Type: Application
    Filed: January 31, 2023
    Publication date: June 1, 2023
    Applicant: RKMAG CORPORATION
    Inventor: Kirill RIVKIN
  • Patent number: 11593636
    Abstract: A machine learning system and method. The machine learning system includes at least one computation circuit that performs a weighted summation of incoming signals and provides a resulting signal. The weighted summation is carried out at least in part by a magnetic element in which weights are adjusted based on changes in effective magnetic susceptibility of the magnetic element.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: February 28, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Kirill A. Rivkin, Javier Guzman, Mourad Benakli
  • Patent number: 11568889
    Abstract: A magnetic processing unit (“MPU”) includes a magnetic element with one or more input channels and one or more output channels. The magnetic element can acquire magnetic arrangement configured to perform a predetermined operation on the received input signal and provide a resulting output signal.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: January 31, 2023
    Assignee: RKMAG CORPORATION
    Inventor: Kirill Rivkin
  • Publication number: 20220270639
    Abstract: A magnetic processing unit (“MPU”) includes a magnetic element with one or more input channels and one or more output channels. The magnetic element can acquire magnetic arrangement configured to perform a predetermined operation on the received input signal and provide a resulting output signal.
    Type: Application
    Filed: July 21, 2020
    Publication date: August 25, 2022
    Applicant: RKMAG CORPORATION
    Inventor: Kirill RIVKIN
  • Patent number: 10770096
    Abstract: A recording head includes a bearing surface, a first writer and a first shield structure for the first writer. The recording head also includes a second writer and a second shield structure for the second writer. The recording head further includes a magnetic bridge connecting the first shield structure to the second shield structure at the bearing surface.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: September 8, 2020
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Wei Tian, Javier Guzman, Jianhua Xue, Kirill Rivkin, Jian Zhong, Lei Lu
  • Patent number: 10699733
    Abstract: A write head including a bearing surface and a write pole having a front surface that forms a portion of the bearing surface. The front surface has a leading edge, a trailing edge and side edges connecting the leading and trailing edges. The write head also includes side shields proximate to the side edges of the write pole, and a trailing shield over the write pole and the side shields. A trailing shield-write pole gap is present between the trailing edge and the trailing shield, and a trailing shield-side shield gap is present between the trailing shield and the side shields. The trailing shield-shield shield gap is substantially less than the trailing shield-write pole gap.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: June 30, 2020
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Kirill A. Rivkin, Wei Tian, XiaoHong Zhang, Yi Liu
  • Patent number: 10210887
    Abstract: Systems and methods for a providing a chirped current profile with an undershoot for a channel preamplifier are described. A method for writing bits in a magnetic recording disc may include applying an overshoot to a write current which is supplied to a magnetic writer of the magnetic recording disc and applying an undershoot to the write current after the overshoot is applied to at least partially de-saturate the magnetic writer. The method may also include writing a bit to the magnetic recording disc with the magnetic writer using the supplied write current. In some examples, the application of a short negative pulse after an overshoot portion of the write current waveform is delivered to the head during a write operation that writes the bit to the magnetic recording disc.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: February 19, 2019
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Kirill A. Rivkin, Mourad Benakli, Todd M. Lammers, Ralph William Cross
  • Patent number: 10141014
    Abstract: A write head including a bearing surface and a write pole having a front surface that forms a portion of the bearing surface. The front surface has a leading edge, a trailing edge and side edges connecting the leading and trailing edges. The write head also includes side shields proximate to the side edges of the write pole, and a trailing shield over the write pole and the side shields. A trailing shield-write pole gap is present between the trailing edge and the trailing shield, and a trailing shield-side shield gap is present between the trailing shield and the side shields. The trailing shield side shield gap is substantially less than the trailing shield-write pole gap.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: November 27, 2018
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Kirill A. Rivkin, Wei Tian, XiaoHong Zhang, Yi Liu
  • Patent number: 10134428
    Abstract: A data writer may be constructed and operated as part of a data storage device. The data writer can be positioned proximal a data storage medium. The data writer may have a write pole positioned adjacent a writer coil with the writer coil having a plurality of turns. A controller that is connected to each turn can be adapted to selectively activate less than all the coil turns in response to the data writer being positioned over a first portion of a data storage medium and selectively activate all of the coil turns in response to the data writer being positioned over a second portion of the data storage medium.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: November 20, 2018
    Assignee: Seagate Technology LLC
    Inventors: Kirill A. Rivkin, JianHua Xue, Wei Tian, Lei Lu, Jian Zhong
  • Patent number: 9978401
    Abstract: Systems and methods for a providing a chirped current profile with an undershoot for a channel preamplifier are described. A method for writing bits in a magnetic recording disc may include applying an overshoot to a write current which is supplied to a magnetic writer of the magnetic recording disc and applying an undershoot to the write current after the overshoot is applied to at least partially de-saturate the magnetic writer. The method may also include writing a bit to the magnetic recording disc with the magnetic writer using the supplied write current. In some examples, the application of a short negative pulse after an overshoot portion of the write current waveform is delivered to the head during a write operation that writes the bit to the magnetic recording disc.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: May 22, 2018
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Kirill A. Rivkin, Mourad Benakli, Todd M. Lammers, Ralph William Cross
  • Patent number: 9922669
    Abstract: Implementations disclosed and claimed herein include a method of write head core located in a slider, the write head core comprising a first end operative to serve as a write pole, a second end operative to serve as a return pole, wherein the first end comprises a substantially smaller cross-sectional area than the second end, and wherein the write head core has a substantially smooth curvature.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: March 20, 2018
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Kirill Rivkin, Ned Tabat, Mourad Benakli, Michael A. Seigler
  • Patent number: 9905251
    Abstract: Method and apparatus for enhancing write current switching efficiencies during data write operations in a data storage device. In some embodiments, write data are described in the form a sequence of symbols of nT length where T is a channel clock rate and n is an integer over a selected range. Bi-directional write currents are applied to a write element to record the sequence of symbols to a storage medium. The write currents are switched between a first rail current and a second rail current for alternating symbols. The write currents are further transitioned to an intermediate current value for at least one channel clock period immediately preceding a next occurrence of a symbol boundary between an adjacent pair of symbols in the sequence.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: February 27, 2018
    Assignee: Seagate Technology LLC
    Inventors: Xiong Liu, Michael R. Montemorra, Ralph W. Cross, Todd M. Lammers, Quan Li, Beng Theam Ko, Kirill Rivkin, Mourad Benakli
  • Patent number: 9805744
    Abstract: The disclosed technology includes a storage device including an interlaced magnetic recording (IMR) system, and a transducer head, including two writers, each writer including a write pole, wherein a width of a first write pole in a cross-track direction is substantially greater than a width of a second write pole in the cross-track direction, and wherein a down-track width of a front shield gap of the first write pole is substantially similar to down-track width of a front shield gap of the second write pole. In another implementation, the storage device includes an IMR system, and a transducer head, including two writers, each writer including a write pole, wherein a width of the first write pole in a cross-track direction is substantially greater than a width of a second write pole in a cross-track direction, and wherein a cross-track width of a side shield gap of the first write pole is substantially similar to a cross-track width of a side shield gap of the second write pole.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: October 31, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Jianhua Xue, Jian Zhong, Lei Lu, Yan Dong, Kirill Rivkin
  • Patent number: 9805742
    Abstract: A data writer may be constructed and operated as part of a data storage device. The data writer can be positioned proximal a data storage medium. The data writer may have a write pole positioned adjacent a writer coil with the writer coil having a plurality of turns. A controller that is connected to each turn can be adapted to selectively activate less than all the coil turns in response to the data writer being positioned over a first portion of a data storage medium and selectively activate all of the coil turns in response to the data writer being positioned over a second portion of the data storage medium.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: October 31, 2017
    Assignee: Seagate Technology LLC
    Inventors: Kirill A. Rivkin, JianHua Xue, Wei Tian, Lei Lu, Jian Zhong
  • Publication number: 20170236534
    Abstract: Method and apparatus for enhancing write current switching efficiencies during data write operations in a data storage device. In some embodiments, write data are described in the form a sequence of symbols of nT length where T is a channel clock rate and n is an integer over a selected range. Bi-directional write currents are applied to a write element to record the sequence of symbols to a storage medium. The write currents are switched between a first rail current and a second rail current for alternating symbols. The write currents are further transitioned to an intermediate current value for at least one channel clock period immediately preceding a next occurrence of a symbol boundary between an adjacent pair of symbols in the sequence.
    Type: Application
    Filed: February 15, 2016
    Publication date: August 17, 2017
    Inventors: Xiong Liu, Michael R. Montemorra, Ralph W. Cross, Todd M. Lammers, Quan Li, Beng Theam Ko, Kirill Rivkin, Mourad Benakli
  • Patent number: 9715888
    Abstract: A data writer may be configured with at least a write pole continuously extending from an air bearing surface to a via. The write pole can contact at least one yoke that contacts the write pole. The write pole and yoke may each be disposed between and separated from a write coil that has a single turn and continuously extends to opposite sides of the write pole.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: July 25, 2017
    Assignee: Seagate Technology LLC
    Inventors: Muhammad Asif Bashir, Kirill A. Rivkin, JianHua Xue, Beverley R. McConnell, Wei Tian
  • Patent number: 9704510
    Abstract: A data writer can have at least a write pole separated from first and second side shields by a continuous dielectric gap layer. Each side shield may have first and second shield sub-layers configured with different magnetic moments that increase relative to the sub-layer's distance from the write pole. The side shields may wrap around a leading tip of the write pole to form a box shield.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: July 11, 2017
    Assignee: Seagate Technology LLC
    Inventors: Lei Lu, Kirill Rivkin, Xuelian Xu, Huaqing Yin
  • Publication number: 20170092300
    Abstract: A data writer can have at least a write pole separated from first and second side shields by a continuous dielectric gap layer. Each side shield may have first and second shield sub-layers configured with different magnetic moments that increase relative to the sub-layer's distance from the write pole. The side shields may wrap around a leading tip of the write pole to form a box shield.
    Type: Application
    Filed: September 24, 2015
    Publication date: March 30, 2017
    Inventors: Lei Lu, Kirill Rivkin, Xuelian Xu, Huaqing Yin
  • Patent number: 9595275
    Abstract: A method of removing a magnetic domain from a slider structure, such as a shield of a write head, in a storage assembly having a storage media. The method includes passing the slider structure in close proximity to a region on the storage media having a magnetic field sufficiently large to remove a magnetic domain in the slider structure.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: March 14, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Yanzhang Liu, Kirill Rivkin, Lei Lu, Huaqing Yin
  • Patent number: 9520148
    Abstract: Methods of removing a magnetic domain from a slider structure, such as a shield in a write head, in a data storage assembly. The method comprises passing the slider structure in close proximity to a decaying magnetic field of at least 100 Oe and no more than 1500 Oe originating from within the storage assembly. In some implementations the decaying magnetic field has an oscillating polarity.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: December 13, 2016
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Yanzhang Liu, Kirill Rivkin, Lei Lu, Huaqing Yin