Patents by Inventor Shang-Lang Chang

Shang-Lang 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).

  • Read-only protection method for removable storage medium
    Publication number: 20110099636
    Abstract: A read-only protection method for removable storage medium has steps of establishing a copy prohibited list, receiving a write command for the removable storage medium, determining whether to allow duplication of data to the removable storage medium, allowing duplication of data to the removable storage medium when the data to be duplicated are not listed in the copy prohibited list and prohibiting duplication of data to the removable storage medium when the data to be duplicated are listed in the copy prohibited list. The method of the present invention prohibits copying of pre-designated data to the removable storage medium, but writing other data is allowed.
    Type: Application
    Filed: March 2, 2010
    Publication date: April 28, 2011
    Inventors: Chia-Huang Tsai, Shang-Lang Chang