Patents by Inventor Shravankumar Bhat

Shravankumar Bhat 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).

  • Data storage device with servo control processor with initial fast lock of disk lock clock
    Patent number: 11915719
    Abstract: Various illustrative aspects are directed to a data storage device, comprising one or more disks; an actuator mechanism configured to position heads proximate to a recording medium of the disks; a spindle motor configured for rotating the one or more disks; and one or more processing devices comprising a servo control processor. The servo control processor is configured to receive a spindle speed error signal indicative of an error in a rotational speed of the spindle motor. The servo control processor is further configured to output an initial frequency offset signal, wherein the initial frequency offset signal is proportional to the spindle speed error signal.
    Type: Grant
    Filed: September 23, 2022
    Date of Patent: February 27, 2024
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Yuanyuan Zhao, Yongzhi Liu, Shravankumar Bhat, Gary Herbst
  • Data protection during concurrent operations for multiple actuator data storage devices
    Patent number: 11650761
    Abstract: Example systems, data storage devices, and methods to provide data protection during concurrent operations for multiple actuator data storage devices are described. The data storage device includes a plurality of actuators configured to actuate a plurality of heads over different subsets of a plurality of disk surfaces. Responsive to receiving a write command for one of the actuators, the coupling state with at least one other of the actuators is determined and execution of write commands is inhibited if the coupling state indicates a possible coupling event. The inhibit of the write commands in the presence of coupling events may prevent off-track writes and protect data.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: May 16, 2023
    Assignee: Western Digital Technologies, Inc.
    Inventors: Shravankumar Bhat, Hideaki Ito, Christopher Wiederholt
  • Data Protection During Concurrent Operations for Multiple Actuator Data Storage Devices
    Publication number: 20230126110
    Abstract: Example systems, data storage devices, and methods to provide data protection during concurrent operations for multiple actuator data storage devices are described. The data storage device includes a plurality of actuators configured to actuate a plurality of heads over different subsets of a plurality of disk surfaces. Responsive to receiving a write command for one of the actuators, the coupling state with at least one other of the actuators is determined and execution of write commands is inhibited if the coupling state indicates a possible coupling event. The inhibit of the write commands in the presence of coupling events may prevent off-track writes and protect data.
    Type: Application
    Filed: October 27, 2021
    Publication date: April 27, 2023
    Inventors: Shravankumar Bhat, Hideaki Ito, Christopher Wiederholt