Patents by Inventor Thomas John Rebeschi

Thomas John Rebeschi 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: 5812104
    Abstract: Pixel luminance of an electroluminescent display panel is controlled by a row driver applying a voltage equal to the panel's threshold voltage, and column drivers applying the voltage value above the threshold voltage to bring the pixel to the desired luminance. Each column driver independently samples a stepped ramp voltage signal at its own predetermined time selected as a function of the desired luminance. Each column driver then holds the sampled voltage value, and applies to its corresponding column electrode at the appropriate time a voltage equal to the sampled voltage value. The voltage rate of change of each individual step of the stepped ramped voltage signal can be controlled to vary the luminance levels, and to uniformly separate each of the luminance levels.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: September 22, 1998
    Assignee: Northrop Grumman Corporation
    Inventors: Mohan L. Kapoor, Thomas John Rebeschi
  • Patent number: 5786797
    Abstract: A thin film electroluminescent display panel is driven with either a symmetric or asymmetric drive scheme which includes at least one equalizing voltage pulse per write cycle to remove carriers trapped at the interfaces of dielectric layers and phosphor layer in order to stabilize the charge of each display panel pixel. The present invention reduces the smearing, latent image and pseudo persistence problems caused by carriers being retained and accumulated at the dielectric and phosphor layer interfaces.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: July 28, 1998
    Assignee: Northrop Grumman Corporation
    Inventors: Mohan Lal Kapoor, Dominic Louis Monarchie, Thomas John Rebeschi, Russell Anthony Budzilek