Patents by Inventor John Woo

John Woo 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: 11783043
    Abstract: A method is provided for authenticating firmware images in an embedded system. The method may include loading and executing a trusted firmware using a pre-existing Secure Boot on a baseboard management controller (BMC). The BMC is configured as a master for an embedded system including System On Chips (SOCs) configured as slaves, out-of-band interfaces between the BMC and the SOCs, and flash storages in electrical communication with the SOCs. The method may also include pushing or uploading, by the BMC, a secure SOC firmware image to one of the SOCs using one of the out-of-band interfaces, verifying a digital signature extracted from the SOC firmware image by using a hash code calculated from the SOC firmware image and decrypted using a public key stored on the BMC and notifying a user about verification of the digital signature.
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: October 10, 2023
    Assignee: ZT GROUP INT'L, INC.
    Inventors: Oscar Alfredo Perez, John Woo
  • Patent number: 11373689
    Abstract: A carrier of an electronic device is provided with a soft stopper that may maintain the carrier at a service position within a chassis slot. As the carrier is inserted into the slot, at a determined point the soft stopper impinges upon a bumper. Further movement of the carrier into the slot requires the user to force the soft stopper to compress or flex and bypass the bumper. With the chassis slot vertically oriented the soft stopper may maintain the carrier and electronic device in service position, disconnected, while service is performed on a chassis circuit board.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: June 28, 2022
    Assignee: ZT Group Int'l, Inc.
    Inventors: John Woo, Chen An, Mahesh Kumar Varrey, Asim Huda
  • Publication number: 20070174670
    Abstract: A system and method for identifying physical blocks marked as logically “bad” or “punctured” during a drive rebuild process enabling the information handling system to process these blocks more intelligently and preventing existing drive physical media errors from needlessly being copied and propagated to new drives. Various implementations of the invention allow physical blocks on a target drive to be marked as “punctured” so they can be diagnosed to verify that they have not been erroneously marked as being “bad,” thereby reducing the number of misdiagnosed drive failures.
    Type: Application
    Filed: January 13, 2006
    Publication date: July 26, 2007
    Inventors: Jared Terry, Samit Ashdhir, Dhiraj Sehgal, Shelley Stracener, John Woo