Patents by Inventor Andreas M. L. Hodemaekers

Andreas M. L. Hodemaekers 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).

  • Liquid crystal display device having capacitance compensation
    Patent number: 4298866
    Abstract: A display apparatus having a liquid crystal display is provided with a measuring element for controlling the drive voltages depending on the temperature of the liquid crystal. The effect of manufacturing tolerances and ageing phenomena are compensated for by means of an auxiliary measuring element. The electric voltages across the measuring element and the auxiliary measuring element differ from one another, for the adjustment of mutually different operating points on the capacitance-voltage curve.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: November 3, 1981
    Assignee: U.S. Philips Corporation
    Inventor: Andreas M. L. Hodemaekers
  • Gas discharge display arrangement
    Patent number: 4188625
    Abstract: A display device comprising a plurality of multi-segmented gas discharge display elements each with a common anode and a cathode for each segment in combination with an error detection circuit that signals the failure of one or more segments to ignite.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: February 12, 1980
    Assignee: U.S. Philips Corporation
    Inventor: Andreas M. L. Hodemaekers