Patents by Inventor David P. Bremer

David P. Bremer 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).

  • Managing unexpected shutdown in a disk drive with multiple actuators and controllers
    Patent number: 11455250
    Abstract: An event that indicates unexpected shutdown of a hard disk drive is determined. The hard disk includes first and second controllers that control respective first and second independently-operable actuators. Each of the actuators has one or more heads that access one or more spinning disks of the hard disk drive. While receiving power for the hard disk drive via back-electromotive force of a motor driven by the one or more spinning disks in response to the event, the first and second controllers independently move the respective first and second actuators to safe positions. In response to determining the first and second actuators are in safe positions, write cache data associated with the first and second controllers is written to a non-volatile memory.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: September 27, 2022
    Assignee: Seagate Technology LLC
    Inventors: Bryce L. DeClercq, Steven Faulhaber, Christopher L. Hill, David P. Bremer, Steven Jerome Spaulding
  • MANAGING UNEXPECTED SHUTDOWN IN A DISK DRIVE WITH MULTIPLE ACTUATORS AND CONTROLLERS
    Publication number: 20210004327
    Abstract: An event that indicates unexpected shutdown of a hard disk drive is determined. The hard disk includes first and second controllers that control respective first and second independently-operable actuators. Each of the actuators has one or more heads that access one or more spinning disks of the hard disk drive. While receiving power for the hard disk drive via back-electromotive force of a motor driven by the one or more spinning disks in response to the event, the first and second controllers independently move the respective first and second actuators to safe positions. In response to determining the first and second actuators are in safe positions, write cache data associated with the first and second controllers is written to a non-volatile memory.
    Type: Application
    Filed: July 2, 2019
    Publication date: January 7, 2021
    Inventors: Bryce L. DeClercq, Steven Faulhaber, Christopher L. Hill, David P. Bremer, Steven Jerome Spaulding