Patents by Inventor Xiaofeng Wang

Xiaofeng Wang 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).

  • Data stream permutation applicable to large dimensions
    Patent number: 7283520
    Abstract: Multi-stage networks are used for data stream permutations involving merging and demultiplexing—providing arbitrary data unit time-space interchange that can be used to solve a range of problems particularly in the field of digital data communications, particularly in digital data communication involving advanced networks for exchanging data in packets, cells, or other data units.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: October 16, 2007
    Assignee: PMC-Sierra, Inc.
    Inventors: Heng Liao, Xiaofeng Wang, Zhao Wu
  • Insulation of anti-resonance in resonators
    Publication number: 20070040632
    Abstract: A cancellation circuit to remove the anti-resonance signal from a resonator. Micro-mechanical and surface and bulk acoustic wave resonators include an anti-resonance in an output signal. This has an undesirable effect on certain types of systems in their function and performance. An anti-resonance cancellation circuit removes the anti-resonance from the output of the resonators by providing a signal which is subtracted from the output of the resonator. The cancellation circuit includes a capacitor which is matched to the static capacitance of the resonator. The loads of the resonator and cancellation network are also matched.
    Type: Application
    Filed: July 24, 2006
    Publication date: February 22, 2007
    Inventors: Yong Xu, Wai Sun, Xiaofeng Wang, Zhe Wang, Sean Lan Liw
  • Insulation of anti-resonance in resonators
    Patent number: 7095297
    Abstract: A cancellation circuit to remove the anti-resonance signal from a resonator. Micro-mechanical and surface and bulk acoustic wave resonators include an anti-resonance in an output signal. This has an undesirable effect on certain types of systems in their function and performance. An anti-resonance cancellation circuit removes the anti-resonance from the output of the resonators by providing a signal which is subtracted from the output of the resonator. The cancellation circuit includes a capacitor which is matched to the static capacitance of the resonator. The loads of the resonator and cancellation network are also matched.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: August 22, 2006
    Assignee: National University of Singapore
    Inventors: Yong Ping Xu, Wai Hoong Sun, Xiaofeng Wang, Zhe Wang, Sean Ian Saxon Liw
  • Insulation of anti-resonance in resonators
    Publication number: 20030148733
    Abstract: A cancellation circuit to remove the anti-resonance signal from a resonator. Micro-mechanical and surface and bulk acoustic wave resonators include an anti-resonance in an output signal. This has an undesirable effect on certain types of systems in their function and performance. An anti-resonance cancellation circuit removes the anti-resonance from the output of the resonators by providing a signal which is subtracted from the output of the resonator. The cancellation circuit includes a capacitor which is matched to the static capacitance of the resonator. The loads of the resonator and cancellation network are also matched.
    Type: Application
    Filed: November 12, 2002
    Publication date: August 7, 2003
    Inventors: Yong Ping Xu, Wai Hoong Sun, Xiaofeng Wang, Zhe Wang, Sean Ian Saxon Liw