Patents by Inventor Wan-Chun Chang

Wan-Chun Chang 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: 9880831
    Abstract: A field firmware upgrading method is adapted in a field firmware upgrading system having a computing device and a storage device. First, the computing device is boot up to a real-time operating system (RTOS), wherein the RTOS and a firmware of the storage device are communicated with each other via a driver. The RTOS sends reading commands to the firmware, such that the firmware performs a reading operation meeting a prefix proceeding, wherein the prefix proceeding defines an order which specific logic block addresses (LBAs) are read. After the firmware performs the reading operation meeting the prefix proceeding, the RTOS sends writing commands to the firmware, such that the firmware performs a writing operation meeting a specific writing proceeding to write an firmware image file into the storage device beginning at a target LBA defined by the specific writing proceeding.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: January 30, 2018
    Assignee: STORART TECHNOLOGY CO., LTD.
    Inventors: Yi-Ming Wang, Wan-Chun Chang, Shih-Hung Fan
  • Publication number: 20170131997
    Abstract: A field firmware upgrading method is adapted in a field firmware upgrading system having a computing device and a storage device. First, the computing device is boot up to a real-time operating system (RTOS), wherein the RTOS and a firmware of the storage device are communicated with each other via a driver. The RTOS sends reading commands to the firmware, such that the firmware performs a reading operation meeting a prefix proceeding, wherein the prefix proceeding defines an order which specific logic block addresses (LBAs) are read. After the firmware performs the reading operation meeting the prefix proceeding, the RTOS sends writing commands to the firmware, such that the firmware performs a writing operation meeting a specific writing proceeding to write an firmware image file into the storage device beginning at a target LBA defined by the specific writing proceeding.
    Type: Application
    Filed: November 6, 2015
    Publication date: May 11, 2017
    Inventors: YI-MING WANG, WAN-CHUN CHANG, SHIH-HUNG FAN
  • Patent number: 8350090
    Abstract: The present invention provides novel processes of preparing racemic and optically active cyclopentenones of Formula I: The invention also provides novel cyclopentenones of formula I in racemic or optically active form.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: January 8, 2013
    Assignee: Chirogate International Inc.
    Inventors: Shih-Yi Wei, Wan-Chun Chang, Yu-Chih Yeh
  • Publication number: 20050104215
    Abstract: A contact structure is suitable for contacting with a soldering bump. The contact structure mainly comprises a bonding pad and an under bump metallurgy including a platinum barrier layer. The platinum barrier layer is disposed between the bonding pad and the soldering bump. The platinum barrier layer with the lower consumption rate and oxidation resistance capability can be used instead of the conventional nickel barrier layer.
    Type: Application
    Filed: June 15, 2004
    Publication date: May 19, 2005
    Inventors: Cheng-Heng Kao, Wan-Chun Chang