Patents by Inventor Donghang Chen

Donghang Chen 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).

  • Publication number: 20080172719
    Abstract: The present invention discloses a method for realizing accurate billing in digital rights management, including: sending, by a rights issuing system, to a Device a rights object acquisition response message including a rights object; sending, by the Device, a rights object acquisition acknowledgement message to the rights issuing system, after validation of the rights object acquisition response message is passed; and initiating, by the rights issuing system, a billing function after receiving the rights object acquisition acknowledgement message. The invention also discloses an apparatus and a rights issuing system. With the inventive method and system, billing will be initiated only in the event that the Device has obtained the rights object successfully or has joined the domain successfully, thereby avoiding effectively the problem of billing error and improving the Quality of Service.
    Type: Application
    Filed: March 3, 2008
    Publication date: July 17, 2008
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jianyu ZHANG, Donghang Chen