Patents by Inventor Chunming Han

Chunming Han 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).

  • Efficient echo cancellation techniques
    Patent number: 7158631
    Abstract: Techniques to cancel echo utilizing reduced die space and reduced usage of a time shared processor.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: January 2, 2007
    Assignee: Intel Corporation
    Inventors: Huaiyu Zeng, Chunming Han
  • Reflectometer with echo canceller
    Publication number: 20060217937
    Abstract: Various embodiments are directed to a zero-echo canceling system adapted to at least partially cancel a received zero-echo by calculating an error signal as a difference between the zero-echo and a zero-echo canceling signal.
    Type: Application
    Filed: March 14, 2006
    Publication date: September 28, 2006
    Inventors: Chunming Han, Amod Dandawate, Xiao-Feng Qi
  • Techniques to test signal propagation media
    Patent number: 7078912
    Abstract: Briefly, techniques that may be used to provide characteristics of a signal propagation medium. Based on test signals transmitted into the medium, the techniques may be used to construct a mosaic waveform with multiple time segments. Each time segment may be based on a gain enhanced received reflected signal and each time segment may have an applied gain that is at a highest level without causing saturation. The techniques may further remove unwanted bridge tap reflection.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: July 18, 2006
    Assignee: Intel Corporation
    Inventor: Chunming Han
  • Reflectometer with echo canceller
    Patent number: 7013226
    Abstract: Various embodiments are described for an improved reflectometer and/or a modem or other device which may include an improved reflectometer. An apparatus may include a pulse transmitter to transmit a pulse to a line to be tested, a receiver adapted to receive a reflection of the transmitted pulse, and a zero-echo canceling system coupled to the transmitter and receiver. The zero-echo canceling system may be adapted to at least partially cancel a received zero-echo by generating a zero-echo canceling signal based on the transmitted pulse and to calculate an error signal as a difference between the zero-echo and the zero-echo canceling signal.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: March 14, 2006
    Assignee: Intel Corporation
    Inventors: Chunming Han, Amod V. Dandawate, Xiao-Feng Qi
  • Reflectometer with echo canceller
    Publication number: 20050080599
    Abstract: Various embodiments are described for an improved reflectometer and/or a modem or other device which may include an improved reflectometer.
    Type: Application
    Filed: October 14, 2003
    Publication date: April 14, 2005
    Inventors: Chunming Han, Amod Dandawate, Xiao-Feng Qi
  • Techniques to perform line qualification
    Publication number: 20040247024
    Abstract: Briefly, a system that may perform line qualification within a mass-manufacturable modem.
    Type: Application
    Filed: June 6, 2003
    Publication date: December 9, 2004
    Inventors: Xiao M. Gao, Wesley H. Smith, Chunming Han
  • Techniques to test signal propagation media
    Publication number: 20040246006
    Abstract: Briefly, a system that may be used to provide characteristics of a signal propagation medium.
    Type: Application
    Filed: June 6, 2003
    Publication date: December 9, 2004
    Inventor: Chunming Han
  • Efficient echo cancellation techniques
    Publication number: 20040086133
    Abstract: Techniques to cancel echo utilizing reduced die space and reduced usage of a time shared processor.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 6, 2004
    Inventors: Huaiyu Zeng, Chunming Han