Patents by Inventor RYAN MATTHEW SCHULZ

RYAN MATTHEW SCHULZ 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).

  • Emergency power off (EPO) island for saving critical data to non-volatile memory
    Patent number: 8947813
    Abstract: Approaches for an emergency power off (EPO) power island, for saving critical data to non-volatile memory in the event of an EPO condition, for use in a hard-disk drive (HDD) storage device. The EPO power island includes a controller for detecting an EPO condition. A voltage regulator supplies power from spindle motor back EMF only to the EPO power island and to the non-volatile memory. Thus, the remainder of the hard drive controller (HDC) is isolated from the EPO power island so that it will not corrupt the data as the HDC's power supply is decaying. Using the power provided by the voltage regulator, the EPO power island transfers critical data from a memory internal to the island to a non-volatile memory external to the island, such as to a flash memory chip.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: February 3, 2015
    Assignee: HGST Netherlands B.V.
    Inventors: Sridhar Chatradhi, Rajesh Koul, Ryan Matthew Schulz, Anthony Edwin Welter
  • EMERGENCY POWER OFF (EPO) ISLAND FOR SAVING CRITICAL DATA TO NON-VOLATILE MEMORY
    Publication number: 20140160595
    Abstract: Approaches for an emergency power off (EPO) power island, for saving critical data to non-volatile memory in the event of an EPO condition, for use in a hard-disk drive (HDD) storage device. The EPO power island includes a controller for detecting an EPO condition. A voltage regulator supplies power from spindle motor back EMF only to the EPO power island and to the non-volatile memory. Thus, the remainder of the hard drive controller (HDC) is isolated from the EPO power island so that it will not corrupt the data as the HDC's power supply is decaying. Using the power provided by the voltage regulator, the EPO power island transfers critical data from a memory internal to the island to a non-volatile memory external to the island, such as to a flash memory chip.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 12, 2014
    Applicant: HGST NETHERLANDS B.V.
    Inventors: SRIDHAR CHATRADHI, RAJESH KOUL, RYAN MATTHEW SCHULZ, ANTHONY EDWIN WELTER