Patents by Inventor Defan Long

Defan Long 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).

  • SMART CARD STORAGE SYSTEM AND FILE MANAGEMENT METHOD THEREIN
    Publication number: 20090307291
    Abstract: A smart card storage system, which comprises a storage region and a control unit, and a file management method therein. The storage region includes a FAT (File Allocation Table) storage region and a data region for storing files; the FAT storage region contains FAT entries; the data region contains blocks; each FAT entry corresponds to one of the data blocks. The control unit finds FAT entries in the FAT storage region, and has operation on files in the data region, e.g. create, store, update, read, delete and resize (truncate/append), according to the correspondence between FAT entries and data blocks.
    Type: Application
    Filed: February 7, 2007
    Publication date: December 10, 2009
    Applicant: BEIJING WATCH DATA SYSTEM CO., LTD
    Inventors: Xin Ye, Defan Long