Patents by Inventor Su-fen Wei

Su-fen Wei 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: 7725638
    Abstract: An application processor circuit has SD-compatible interface protocols and can perform both host and slave functions. The circuit includes SD bus interface logic for realizing SD interface signals defined in SD-compatible interface protocols; system bus interface logic for performing the interface function on the system bus side; a data buffer for adjusting the data transfer rate difference between the SD bus interface and the system bus interface; a data buffer controller for controlling access to the data buffer; and a configuration unit for configuring the circuit to work in the host mode or slave mode. The SD-compatible interface protocols include MMC/SD/SDIO protocol, high speed MMC/SD/SDIO protocol, and CE-ATA interface protocol. The SD host logic and slave logic are incorporated in a single module to support both the SD host and slave functions, so as to achieve more convenient data transfer between electronic devices.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: May 25, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Li Zhang, Su-fen Wei, Yan Xiao
  • Publication number: 20080059679
    Abstract: An application processor circuit has SD-compatible interface protocols and can perform both host and slave functions. The circuit includes SD bus interface logic for realizing SD interface signals defined in SD-compatible interface protocols; system bus interface logic for performing the interface function on the system bus side; a data buffer for adjusting the data transfer rate difference between the SD bus interface and the system bus interface; a data buffer controller for controlling access to the data buffer; and a configuration unit for configuring the circuit to work in the host mode or slave mode. The SD-compatible interface protocols include MMC/SD/SDIO protocol, high speed MMC/SD/SDIO protocol, and CE-ATA interface protocol. The SD host logic and slave logic are incorporated in a single module to support both the SD host and slave functions, so as to achieve more convenient data transfer between electronic devices.
    Type: Application
    Filed: August 13, 2007
    Publication date: March 6, 2008
    Applicant: FREESCALE SEMICONDUCTOR, INC
    Inventors: Li Zhang, Su-Fen Wei, Yan Xiao