Patents by Inventor Peter Eric Krebs

Peter Eric Krebs 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: 3942071
    Abstract: A driving circuit arrangement for a gas-discharge display device consisting of an array of discharge lamps applies to the array a discharge retaining voltage composed of a voltage less than is required to maintain a discharge and a voltage equal to the magnitude of a `half-pulse,` the use of two coincident half-pulses being sufficient in addition to the retaining voltage to strike a discharge. To extinguish a discharge in one or more of the lamps the voltage equal to a half-pulse is removed temporarily from one of the conductors associated with the lamp, thereby reducing the voltage across all the lamps connected to that conductor below the level required to retain a discharge, and a compensating voltage of magnitude equal to a half-pulse is temporarily applied to the other conductor of those lamps in which it is desired that the discharge not be extinguished.
    Type: Grant
    Filed: November 1, 1974
    Date of Patent: March 2, 1976
    Assignee: Ferranti, Limited
    Inventors: Peter Eric Krebs, Frank Walters