Patents by Inventor Chun Wun Yeung

Chun Wun Yeung 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).

  • Patent number: 10019849
    Abstract: Systems and methods for interacting with a display system using a personal electronic device (PED). The display system may establish communication with and receive user input from the PED. The display system may use the received user input to generate and/or update content displayed on a display of the display system.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: July 10, 2018
    Assignee: zSpace, Inc.
    Inventors: Arthur L. Berman, Clifford S. Champion, David A. Chavez, Francisco Lopez-Fresquet, Jonathan J. Hosenpud, Robert D. Kalnins, Alexandre R. Lelievre, Christopher W. Sherman, Jerome C. Tu, Kevin S. Yamada, Chun Wun Yeung
  • Patent number: 9958695
    Abstract: In some embodiments, a system and/or method may operate a liquid crystal device. The method may include increasing a voltage provided to a driven level to a liquid crystal addressable element of the liquid crystal device. Said increasing may be performed over a time period greater than 1 ms. The liquid crystal addressable element may be in a driven state at the driven level. The method may include reducing the provided voltage to a relaxed level. The liquid crystal addressable element may be in a relaxed state at the relaxed level. Said increasing the voltage over the time period to the driven level may result in a reduced acoustical noise associated with the provided voltage. In some embodiments, the liquid crystal device may include a three-dimensional (3D) display.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: May 1, 2018
    Assignee: zSpace, Inc.
    Inventors: Dmytro Yu Reznikov, Mark F. Flynn, Chun Wun Yeung
  • Publication number: 20180033211
    Abstract: Systems and methods for interacting with a display system using a personal electronic device (PED). The display system may establish communication with and receive user input from the PED. The display system may use the received user input to generate and/or update content displayed on a display of the display system.
    Type: Application
    Filed: July 29, 2016
    Publication date: February 1, 2018
    Inventors: Arthur L. Berman, Clifford S. Champion, David A. Chavez, Francisco Lopez-Fresquet, Jonathan J. Hosenpud, Robert D. Kalnins, Alexandre R. Lelievre, Christopher W. Sherman, Jerome C. Tu, Kevin S. Yamada, Chun Wun Yeung
  • Publication number: 20150160491
    Abstract: In some embodiments, a system and/or method may operate a liquid crystal device. The method may include increasing a voltage provided to a driven level to a liquid crystal addressable element of the liquid crystal device. Said increasing may be performed over a time period greater than 1 ms. The liquid crystal addressable element may be in a driven state at the driven level. The method may include reducing the provided voltage to a relaxed level. The liquid crystal addressable element may be in a relaxed state at the relaxed level. Said increasing the voltage over the time period to the driven level may result in a reduced acoustical noise associated with the provided voltage. In some embodiments, the liquid crystal device may include a three-dimensional (3D) display.
    Type: Application
    Filed: December 11, 2013
    Publication date: June 11, 2015
    Applicant: zSpace, Inc.
    Inventors: Dmytro Yu Reznikov, Mark F. Flynn, Chun Wun Yeung
  • Patent number: 8174482
    Abstract: A node to receive a first current and to couple a first or a second backlighting medium to the node. The first backlighting medium is to conduct the first current and the second backlighting medium to conduct a second current. A switch is coupled to the node and to the first or the second backlighting medium. The switch is to receive a control input signal and to conduct a third current if the second backlighting medium is coupled to the node.
    Type: Grant
    Filed: December 31, 2005
    Date of Patent: May 8, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Chun Wun Yeung
  • Patent number: 7995050
    Abstract: A mobile computing device comprises a power source, a display, a display driver and a control circuit. The power source is configured to provide a power signal. The display comprises a plurality of pixels. The display driver is configured to receive the power signal and to drive the pixels based on the power signal and display data. The control circuit is configured to periodically remove the power signal from at least a portion of the display driver.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: August 9, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Yoon Kean Wong, James Samuel Bowen, Chun Wun Yeung
  • Patent number: 7969426
    Abstract: According to one or more embodiments, a variation is detected in light that is cast over a display interface of a computing device. A characteristic of the light variation is identified. From this characteristic, a determination is made as to whether the variation in light is to be interpreted as an input or to be ignored.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: June 28, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Peter Skillman, Chun Wun Yeung
  • Publication number: 20080158117
    Abstract: A mobile computing device comprises a power source, a display, a display driver and a control circuit. The power source is configured to provide a power signal. The display comprises a plurality of pixels. The display driver is configured to receive the power signal and to drive the pixels based on the power signal and display data. The control circuit is configured to periodically remove the power signal from at least a portion of the display driver.
    Type: Application
    Filed: December 27, 2006
    Publication date: July 3, 2008
    Inventors: Yoon Kean Wong, James Samuel Bowen, Chun Wun Yeung
  • Publication number: 20080100593
    Abstract: According to one or more embodiments, a variation is detected in light that is cast over a display interface of a computing device. A characteristic of the light variation is identified. From this characteristic, a determination is made as to whether the variation in light is to be interpreted as an input or to be ignored.
    Type: Application
    Filed: October 31, 2006
    Publication date: May 1, 2008
    Inventors: Peter Skillman, Chun Wun Yeung
  • Patent number: 5949408
    Abstract: A computer device, for instance a palmtop personal organizer, has a dual-orientation display device with both portrait and landscape modes of viewing the display. The keyboard is automatically disabled when the portrait mode is selected by a user. The display has two digitized regions separated by a workspace, which is preferably also digitized to provide input commands to a processor unit when touched. The display further includes indicia, such as icons or symbols shown on the display, which may be selected to activate a computer program, function or command. These icons are slanted and permanently fixed to the display, so they may be readily understood when viewed from either the portrait or landscape modes. A method is also provided of displaying indicia for viewing from two orthogonal directions. The invention further includes a way to use an analog touch-sensitive panel, having opposing resistive layers, to trigger an interrupt line used for returning the palmtop from a sleep mode.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: September 7, 1999
    Assignee: Hewlett-Packard Company
    Inventors: Beng Hong Kang, Chun Wun Yeung, Eswin Tedja, Jin-Meng Tan
  • Patent number: 5654529
    Abstract: A handheld computing device has a planar display and a superimposed, transparent digitizer. The combination is arranged to simulate writing or drawing with pencil on paper: the writing end of a passive stylus is pressed on and moved across the digitizer surface and a line on the display is produced directly under the stylus path. In order to complete the analogy to pencil and paper, display erasure is also provided. Under the display is located an inductive winding. The other end of the stylus contains a small permanent magnet. When the magnet end of the stylus is pressed against the digitizer and moved over a display line, a small voltage is induced in the inductive winding. This voltage is converted into a logic signal. The assertion of this signal together with a signal from the digitizer results in the erasure of display traces in the region inferred from the digitizer signal.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: August 5, 1997
    Assignee: Hewlett-Packard Company
    Inventors: Chun Wun Yeung, Beng Hong Kang