Patents by Inventor Krishnan Subramanian

Krishnan Subramanian 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).

  • Patent number: 11885986
    Abstract: An active metasurface that provides low-loss and high-bandwidth modulation control of light includes a number of cells arranged on a substrate. A controller dynamically alters a voltage differential supplied to the electrodes of each of the cells is adapted to alter refractive index of each of the high-index dielectric blocks in order to controllably steer light exiting the cell.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: January 30, 2024
    Assignee: LUMINAR TECHNOLOGIES, INC.
    Inventors: Aditya Jain, Zoran Jandric, Dan Mohr, Kevin A. Gomez, Krishnan Subramanian
  • Publication number: 20240005222
    Abstract: A system that includes a depth perception camera to estimate or otherwise measure the dimensions of a proposed carry-on item to determine whether the proposed carry-on item complies with limitations associated with a user. The system is configured to enable checking the proposed carry-on item and receiving payment for the checked item when the item exceeds the limitations associated with the user. Displayed to the user are dimension lines associated with the maximum dimensions of the limitations and/or the captured dimensions of the proposed carry-on item.
    Type: Application
    Filed: September 18, 2023
    Publication date: January 4, 2024
    Inventors: Jayaraman Solavaram Srinivasan, Krishnan Subramanian, Surendra Babu Badugu, Rawnda Draper
  • Publication number: 20240005952
    Abstract: A data storage apparatus includes a disk storage region in which magnetic disks are stored. A carrier mechanism picks up one or more of the magnetic disks and moves them to and from the disk storage region. A data access device of the apparatus includes a structure to receive the one or more magnetic disks from the carrier mechanism and spins the magnetic disks in place. One or more actuator arms are operable to move across a same surface of the one or more magnetic disks. Two or more read transducers are mounted to the actuator arms and operable to simultaneously read from the same surface of the one or more magnetic disks. Two or more write transducers are mounted to the actuator arms and operable to simultaneously write to the same surface of the one or more magnetic disks.
    Type: Application
    Filed: June 21, 2023
    Publication date: January 4, 2024
    Inventors: Riyan Alex Mendonsa, Krishnan Subramanian, Brett R. Herdendorf, Jon D. Trantham, Mehmet Fatih Erden
  • Patent number: 11842753
    Abstract: A system includes a library compartment, a player and a gas generator. The library compartment houses a plurality of data storage disks. The player is external to the library compartment and comprises a head that is configured to interact with at least one of the plurality of data storage disks. The gas generator is fluidly connected to the player. An embodiment includes a partition between the library compartment and player, the partition including a selectively openable interlock. In an embodiment, the player has a negative fluid pressure relative to the library compartment. A method of controlling an environment in a disk player is also described. The method includes detecting a composition of a fluid environment in the disk player and detecting a pressure of the fluid environment in the disk player.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: December 12, 2023
    Assignee: Seagate Technology LLC
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian, Shawn A. Ruden
  • Patent number: 11817125
    Abstract: A brake crawler assembly configured for vertically moving an arm assembly along a pivot member in a multi-disk hard disk drive is provided. The brake crawler assembly includes a first clamp, including a first recess within which is disposed a first actuator and a first clamp calibration element. The first clamp calibration element includes a first clamp calibration access portion adapted to be accessible externally of the first clamp and adapted to receive a first external adjustment and a first clamp internal compression modifier adapted to modify a force exerted by the first actuator on the first recess, responsive to the received first external adjustment, wherein the first clamp is configured to selectively engage the pivot member at a position along the pivot member relative to at least one disk of the multi-disk hard disk drive based on the modified force exerted.
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: November 14, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian
  • Patent number: 11790946
    Abstract: The presently disclosed technology is directed to maximizing cleanliness, reliability, and space efficiency within a jukebox-style HDD, while minimizing overall cost of the HDD. In an effort to reduce the movement of a robotic arm assembly, cassettes within a jukebox-style HDD may be configured to be magnetically repositionable to replace some of the movement of the robotic arm assembly, without adding another significant source of potential mechanical failure within the HDD enclosure. Further, the overall number of moving parts is reduced, which may improve reliability of the HDD, as well as cleanliness within the HDD enclosure.
    Type: Grant
    Filed: February 4, 2022
    Date of Patent: October 17, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian
  • Patent number: 11783858
    Abstract: A device disclosed herein includes an upper shape memory alloy (SMA) wire, a lower SMA wire, a flexure having an opening, and a spring configured within the flexure opening, wherein the lower SMA wire, and the flexure are attached at one end to an anchor and at another end to a pin.
    Type: Grant
    Filed: January 5, 2022
    Date of Patent: October 10, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian
  • Patent number: 11774366
    Abstract: A Surface-Enhanced Raman Spectroscopy (SERS) device to perform accurate label-free long-read DNA sequencing. A Raman sensor has a hot spot defined by plasmonic nanostructures and excited by at least one laser. An immobilized DNA polymerase can be used to pull a DNA template strand to be sequenced through the hot spot.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: October 3, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Gemma Mendonsa, Eric K. Wadleigh, Vivek Krishnamurthy, Riyan A. Mendonsa, Martin G. Blaber, Krishnan Subramanian
  • Publication number: 20230301115
    Abstract: The described technology provides implementations of a mechanical magnetoresistance device. The mechanical magnetoresistance device includes a first magnetoresistive well, the magnetoresistive well including at least one magnetic element and a suspension substrate, wherein the at least one magnetic element is suspended in the suspension substrate. The mechanical magnetoresistance device further includes a first conductive element in electronic communication with a first portion of the first magnetoresistive well, a second conductive element in electronic communication with a different second portion of the first magnetoresistive well, wherein the first conductive element is in electronic communication with the second conductive element via the first magnetoresistive well.
    Type: Application
    Filed: March 14, 2023
    Publication date: September 21, 2023
    Inventors: Riyan Alex MENDONSA, Brett R. HERDENDORF, Krishnan SUBRAMANIAN, Mark T. KIEF, Jon D. TRANTHAM
  • Patent number: 11763209
    Abstract: A system that includes a depth perception camera to estimate or otherwise measure the dimensions of a proposed carry-on item to determine whether the proposed carry-on item complies with limitations associated with a user. The system is configured to enable checking the proposed carry-on item and receiving payment for the checked item when the item exceeds the limitations associated with the user. Displayed to the user are dimension lines associated with the maximum dimensions of the limitations and/or the captured dimensions of the proposed carry-on item.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: September 19, 2023
    Assignee: AMERICAN AIRLINES, INC.
    Inventors: Jayaraman Solavaram Srinivasan, Krishnan Subramanian, Surendra Babu Badugu, Rawnda Draper
  • Patent number: 11756579
    Abstract: A data storage device includes a ramp configured to support at least one head in the data storage device, and a movement mechanism coupled to the ramp and configured to move the ramp from a first position to a second position by at least one of expansion or contraction of at least a portion of the movement mechanism. The data storage device further includes a ramp motion control module operably coupled to the movement mechanism. The ramp motion control module is configured to provide the movement mechanism with a first control signal that causes the movement mechanism to move the ramp from the first position to the second position. The data storage device additionally includes a latch configured to hold the ramp.
    Type: Grant
    Filed: April 15, 2022
    Date of Patent: September 12, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian
  • Publication number: 20230280695
    Abstract: A time display apparatus for indicating time in a plurality of time zones simultaneously, the apparatus including a dial member indicating a 12-hour time clock, a first wheel completing one revolution in 12 hours and coupled to an hour hand, and a second wheel completing one revolution in 1 hour and coupled to a multi-zone minute hand having at least two different vertices, wherein each vertex of the multi-zone minute hand indicates at least two different minute markings on the 12-hour time clock.
    Type: Application
    Filed: May 9, 2023
    Publication date: September 7, 2023
    Inventor: Navaneeth Krishnan Subramanian
  • Patent number: 11747569
    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.
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: September 5, 2023
    Assignee: Seagate Technology LLC
    Inventors: Zoran Jandric, Kevin A. Gomez, Dan Mohr, Anil J. Reddy, Aditya Jain, Krishnan Subramanian
  • Publication number: 20230253013
    Abstract: The presently disclosed technology is directed to maximizing cleanliness, reliability, and space efficiency within a jukebox-style HDD, while minimizing overall cost of the HDD. In an effort to reduce the movement of a robotic arm assembly, cassettes within a jukebox-style HDD may be configured to be magnetically repositionable to replace some of the movement of the robotic arm assembly, without adding another significant source of potential mechanical failure within the HDD enclosure. Further, the overall number of moving parts is reduced, which may improve reliability of the HDD, as well as cleanliness within the HDD enclosure.
    Type: Application
    Filed: February 4, 2022
    Publication date: August 10, 2023
    Inventors: Brett R. HERDENDORF, Riyan Alex MENDONSA, Krishnan SUBRAMANIAN
  • Patent number: 11681258
    Abstract: A time display apparatus for indicating time in a plurality of time zones simultaneously, the apparatus includes a case having a compartment enclosed by a cover, the case having a dial member indicating a 12-hour time clock and a 24-hour time clock, a first wheel completing one revolution in 12 hours and coupled to an hour hand, a second wheel completing one revolution in 1 hour and coupled to a multi-zone minute hand having at least two different vertices, and a third wheel completing one revolution in 24 hours and coupled to a multi-zone hour indicator hand having at least two different indicators, wherein each vertex of the multi-zone minute hand indicates a different minute marking on the 12 hour time clock and each indicator of the multi-zone hour indicator hand indicates a different hour marking on the 24 hour time clock corresponding to different time zones.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: June 20, 2023
    Inventor: Navaneeth Krishnan Subramanian
  • Patent number: 11651784
    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.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: May 16, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Brett R. Herdendorf, Riyan A. Mendonsa, Wolfgang Rosner, Jonathan Lewis Kemnitz, Krishnan Subramanian, Kurt LeRoy Erickson
  • Patent number: 11635553
    Abstract: An active metasurface includes a number of periodically-repeated unit cells arranged on a substrate that each include a plasmonic waveguide shaped and sized to provide a cutoff mode that captures light of a target wavelength. The active metasurface includes an index modulation controller that controllably varies a voltage differential across each one of the periodically-repeated cells to change a phase of light incident on the metasurface.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: April 25, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Aditya Jain, Zoran Jandric, Dan Mohr, Kevin A. Gomez, Krishnan Subramanian
  • Patent number: 11599577
    Abstract: Features are detected from a sensor signal via a deep-learning network or other feature engineering methods in an edge processing node. Machine-learned metadata is created that describes the features, and a hash is created with the machine-learned metadata. The sensor signal is stored as a content object at the edge processing node, the object being keyed with the hash at, the edge processing node.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: March 7, 2023
    Assignee: Seagate Technology LLC
    Inventors: Lijuan Zhong, Krishnan Subramanian, Mehmet Fatih Erden, Jon D. Trantham
  • Patent number: 11591648
    Abstract: Method of utilizing a nanochannel in combination with at least one magnetic sensor for detecting (e.g., identifying) molecules, cells, and other analytes. Particularly, the method includes bringing molecules, labeled with magnetic nanoparticles (MNPs), in close proximity to the magnetic sensor to identify the molecules via an output signal from the magnetic sensor. The method is particularly suited for identifying nucleotides of DNA and RNA strands.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: February 28, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Gemma Mendonsa, Riyan A. Mendonsa, Krishnan Subramanian
  • Publication number: 20230054813
    Abstract: A system includes a library compartment, a player and a gas generator. The library compartment houses a plurality of data storage disks. The player is external to the library compartment and comprises a head that is configured to interact with at least one of the plurality of data storage disks. The gas generator is fluidly connected to the player. An embodiment includes a partition between the library compartment and player, the partition including a selectively openable interlock. In an embodiment, the player has a negative fluid pressure relative to the library compartment. A method of controlling an environment in a disk player is also described. The method includes detecting a composition of a fluid environment in the disk player and detecting a pressure of the fluid environment in the disk player.
    Type: Application
    Filed: June 22, 2022
    Publication date: February 23, 2023
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian, Shawn A. Ruden