Patents by Inventor Yejia Di

Yejia Di 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).

  • Method and apparatus for refreshing flash memory device
    Patent number: 10796774
    Abstract: A flash memory controller refreshes memory blocks in a flash memory device by setting different refresh cycles for individual memory blocks in the flash memory device. The flash memory controller records a number of erase operations performed on each memory block of the flash memory device. Upon detecting that a bit error rate of a memory block is greater than a preset threshold, the flash memory controller determines a refresh cycle for the memory block based on recorded number of erase operations performed on the memory block, and then refreshes the memory block according to the refresh cycle.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: October 6, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Liang Shi, Yejia Di, Hsing Mean Sha, Yuangang Wang, Dongfang Shan
  • METHOD AND APPARATUS FOR REFRESHING FLASH MEMORY DEVICE
    Publication number: 20180374546
    Abstract: A flash memory controller refreshes memory blocks in a flash memory device by setting different refresh cycles for individual memory blocks in the flash memory device. The flash memory controller records a number of erase operations performed on each memory block of the flash memory device. Upon detecting that a bit error rate of a memory block is greater than a preset threshold, the flash memory controller determines a refresh cycle for the memory block based on recorded number of erase operations performed on the memory block, and then refreshes the memory block according to the refresh cycle.
    Type: Application
    Filed: September 4, 2018
    Publication date: December 27, 2018
    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
    Inventors: Liang Shi, Yejia Di, Hsing Mean SHA, Yuangang Wang, Dongfang Shan