Patents by Inventor Hugo John Cornelissen

Hugo John Cornelissen 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).

  • Input and display device
    Patent number: 6803900
    Abstract: Radiation from a collimated linear source (7, 8) is directed partly into a light guide structure (6) and partly glancing over the surface of the light guide structure (6). The radiation (15, 20) travelling inside the light guide is coupled out by micro-optical structures to illuminate the underlying reflective or superlying transmissive LCD. Radiation (17A, 17B) travelling across the surface outside the light guide (6) is directed towards an array of light sensitive detectors. Interruption of this radiation by a pen (21) or a finger (21) is detected and the position of the interruption is deduced.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: October 12, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Bruce I. Berkoff, Hugo John Cornelissen
  • Display device
    Patent number: 6731261
    Abstract: An addressing method for obtaining grey scales in bistable chiral-nematic LCDs by using, inter alia, phase modulation between the addressing pulse and the data pulses.
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: May 4, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Lucas Josef Maria Schlangen, Hugo John Cornelissen, Fransiscus Anna Maria Antoine Paulissen
  • Display device
    Publication number: 20020039088
    Abstract: An addressing method for obtaining grey scales in bistable chiral-nematic LCDs by using, inter alia, phase modulation between the addressing pulse and the data pulses.
    Type: Application
    Filed: April 16, 2001
    Publication date: April 4, 2002
    Inventors: Lucas Josef Maria Schlangen, Hugo John Cornelissen, Fransiscus Anna Maria Antoine Paulissen