Patents Examined by William L. Boddie
  • Patent number: 7352340
    Abstract: A display system has a display surface having a three-dimensional convex shape. A projection system projects an object field onto a continuous image field located on the interior of the display surface the display surface is extensive in its coverage, for example subtending an angle of at least 240 degrees to provide greater hemispherical coverage.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: April 1, 2008
    Assignee: Global Imagination
    Inventors: Steven W Utt, Philip C Rubesin, Michael A Foody
  • Patent number: 7317445
    Abstract: In a method, a display device and a computer program product that reduces motion blur, flicker and loss of brightness of images shown in non-stroboscopic display devices, such as Liquid Crystal, Plasma Panel, Thin Film Transistor, Liquid Crystal on Silicon, color Sequential, Organic Light Emitting Diode or Polymer Light Emitting Diodes displays, in which each image of an input video signal is displayed during a display time ti, which is less than or equal to a picture period T, the motion and the characteristics of motion are measured and the display time ti is continuously adjusted between 0 and T depending on this measured motion and the characteristics of motion. To further reduce flicker and loss of brightness encountered when reducing the display time, anti-motion blur filtering of the input video signal is performed, where the display time and the amount and sort of filtering is jointly controlled based on the measured motion and characteristics of motion.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: January 8, 2008
    Assignee: Koninklijke Philips Electronics N. V.
    Inventors: Gerben Johan Hekstra, Leo Jan Velthoven, Michiel Adriaanszoon Klompenhouwer
  • Patent number: 7307613
    Abstract: In a technique of partially serializing video data to transfer it from a display control circuit to a signal-line driving circuit such as a source driver, data comparisons {circle around (1)} and {circle around (2)} in the data order after serialization are made sequentially in a stage of parallel data prior to making a parallel-to-serial conversion of the video data, and determination is made as to whether or not the bit inversion number of the data is more than half to take a control of an inversion/noninversion for the transfer data. An operational speed of a comparator, an inversion/noninversion determination circuit, etc. can be reduced as compared with the case in which a control is taken of the inversion/noninversion for the data of which an operation speed became high by partially serializing the video data.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: December 11, 2007
    Assignee: NEC Electronics Corporation
    Inventors: Yoshiyuki Teshirogi, Takashi Nose
  • Patent number: 7212183
    Abstract: A pixel has first to third N-type TFT elements serially connected between a data line and a pixel electrode node. Each gate of the first and second TFT elements is connected to a first gate line, while the gate of the third TFT element is connected to a second gate line. The first and second gate lines in a select state each set to a high voltage that can fully turn-on the first to third TFT elements. The first gate line in a non-select state is set to a low voltage that can fully turn-off the first and second TFT elements, while the second gate line in the non-select state is set to an intermediate voltage between the maximum and the minimum voltages being transmitted on the data line.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: May 1, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Youichi Tobita
  • Patent number: 7196681
    Abstract: A display panel includes a number of light emitting elements arranged in a matrix fashion. A light emitting element driving circuit for use in the display panel can reduce fluctuations in brightness among the light emitting elements. A pulse supply circuit is formed so as to charge/discharge a capacitor based on a clock signal and drive the light emitting element based on the resulting discharge current. The amplitude of a drive current for each of the light emitting elements is not controlled by a transistor in a TFT circuitry, but controlled by external factors installed outside the display panel. The external factors may be a pulse supply circuit providing drive power source voltage and clock frequency. The external factors can be determined precisely.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: March 27, 2007
    Assignee: Pioneer Corporation
    Inventor: Yoshiyuki Okuda