Patents by Inventor Weijie Yun

Weijie Yun 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: 20050243220
    Abstract: An integrated circuit device having a television signal tuner, video decoder and power control circuit. The television signal tuner selects one of a plurality of television channels, and the video decoder converts a television signal conveyed in the selected television channel into a video display signal. The power control circuit alternately enables and disables the television tuner to enable reception of a first portion of video information conveyed in the television signal and to disable reception of a second portion of the video information.
    Type: Application
    Filed: May 2, 2005
    Publication date: November 3, 2005
    Inventors: Weijie Yun, Samuel Sheng
  • Publication number: 20050243217
    Abstract: An analog video receiver implemented in an integrated circuit device. The analog video receiver includes a mixing circuit to mix an analog video signal with a sinusoid to generate a frequency-shifted analog video signal, and an offset cancellation circuit to obtain a sample of the frequency-shifted analog video signal during a first time interval and, based on the sample, generate an offset cancellation signal that, when summed with the frequency-shifted analog video signal, reduces a substantially time-invariant offset in the frequency-shifted analog video signal.
    Type: Application
    Filed: May 2, 2005
    Publication date: November 3, 2005
    Inventors: Weijie Yun, Samuel Sheng
  • Publication number: 20020154851
    Abstract: An optical modular switching system comprising a first optical switch module having at least one first optical input port, at least one first optical output port, and at least one first interconnect port. The optical modular switching system also comprises a second optical switch module having at least one second optical input port, at least one second optical output port, and at least one second interconnect port. Finally, the optical modular switching system comprises an optical interconnect that optically couples the first optical interconnect port to the second optical interconnect port. The invention also provides a method for switching an optical signal. Additional optical switch modules can be added to incrementally grow the optical modular switching system.
    Type: Application
    Filed: April 18, 2001
    Publication date: October 24, 2002
    Inventors: J. Andrew Yeh, Norman C. Tien, Weijie Yun, Chang-Lin Tien
  • Publication number: 20020085796
    Abstract: A self-aligned electrical interconnect for two assembled perpendicular semiconductive chips is formed by a slot in a carrier chip having a notch with a metal trace. The other device chip is perpendicularly placed in the slot and has a matching metal trace. The chips are then bonded together by the traces to provide for fine perpendicular alignment of the assembled chips.
    Type: Application
    Filed: January 4, 2001
    Publication date: July 4, 2002
    Applicant: OpticNet, Inc.
    Inventors: Martin Lim, Weijie Yun
  • Patent number: 6189381
    Abstract: An angular rate sensor made from a structural wafer of single crystal silicon has a pair of proof masses lying in an X-Y plane and supported by a circular frame. The masses are driven into oscillation in the X-direction using an interdigitated comb drive. Rotation of the sensor about the Z-axis induces Coriolis forces which cause the frame to rotate, the rotation of the frame being indicative of the angular rate of the sensor. A parallel plate sensor located outside of the circular frame senses rotation of the frame.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: February 20, 2001
    Assignee: SiTek, Inc.
    Inventors: Yongli Huang, Martin Lim, Tariq M. Haniff, Weijie Yun
  • Patent number: 5759870
    Abstract: Methods for surface micro-machining silicon wafers, including coating cavity sidewalls with oxidation-resistant material to prevent lateral oxidation. This in turn prevents "bird's beak" during formation of a diaphragm. The methods are useful for, among other things, the manufacture of absolute-type pressure sensors. Along with bulk micro-machining techniques, the methods can be used to produce gauge- and differential-type pressure sensors, as well.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: June 2, 1998
    Assignee: BEI Electronics, Inc.
    Inventors: Weijie Yun, Liwei Lin, Tariq M. Haniff