Patents by Inventor Ze-wen Zhang

Ze-wen Zhang 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).

  • Mechanism for transmitting elementary streams in a broadcast environment
    Patent number: 7433946
    Abstract: The techniques and mechanisms described herein are directed at transmitting elementary streams in a broadcast environment. The mechanisms provide a buffer controller and packet scheduler that allow a media format to be transmitted through the broadcasting environment in a manner resulting in a low channel switch delay. A buffer-fullness indicator allows the operation with various types of decoders. A lower bound and an upper bound are calculated for each frame within the elementary stream. The lower bound corresponds to an earliest time for sending the frame without causing an overflow condition within a decoder buffer. The upper bound corresponds to a latest time for sending the frame without causing an underflow condition within the decoder buffer. A send time is then scheduled based on the lower bound and the upper bound that determines when a packet associated with the frame is transmitted over a channel in a broadcast environment.
    Type: Grant
    Filed: August 12, 2004
    Date of Patent: October 7, 2008
    Assignee: Microsoft Corporation
    Inventors: Guobin Shen, Shipeng Li, Hua Cai, Regis J. Crinon, Ze-wen Zhang, Guangping Gao, Hong-Hui Sun, Baogang Yao
  • Mechanism for transmitting elementary streams in a broadcast environment
    Publication number: 20060036759
    Abstract: The techniques and mechanisms described herein are directed at transmitting elementary streams in a broadcast environment. The mechanisms provide a buffer controller and packet scheduler that allow a media format to be transmitted through the broadcasting environment in a manner resulting in a low channel switch delay. A buffer-fullness indicator allows the operation with various types of decoders. A lower bound and an upper bound are calculated for each frame within the elementary stream. The lower bound corresponds to an earliest time for sending the frame without causing an overflow condition within a decoder buffer. The upper bound corresponds to a latest time for sending the frame without causing an underflow condition within the decoder buffer. A send time is then scheduled based on the lower bound and the upper bound that determines when a packet associated with the frame is transmitted over a channel in a broadcast environment.
    Type: Application
    Filed: August 12, 2004
    Publication date: February 16, 2006
    Applicant: Microsoft Corporation
    Inventors: Guobin Shen, Shipeng Li, Hua Cai, Regis Crinon, Ze-wen Zhang, Guangping Gao, Hong-Hui Sun, Baogang Yao