Patents by Inventor Tony Nick Criscimagna

Tony Nick Criscimagna 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).

  • Voltage controlled sustain frequency in a gas display panel
    Patent number: 4017762
    Abstract: A circuit for supplying sustain voltage pulses to the orthogonal conductors of a gas display panel including voltage sensors to sense any change in sustain voltage amplitude with aging of the circuits and a voltage controlled oscillator to shift the operating frequency of sustain pulses as the amplitude changes. In that manner, the operating point of sustain voltage vs. frequency is shifted to take advantage of the slope in a graphical representation of sustain voltage margin to allow for shifting of the margin due to panel aging.
    Type: Grant
    Filed: March 30, 1976
    Date of Patent: April 12, 1977
    Assignee: IBM Corporation
    Inventors: Tony Nick Criscimagna, Michael J. Steinmetz
  • Gas panel with improved circuit for write operation
    Patent number: 3938107
    Abstract: An improved write circuit for a gas panel produces a sequence of alternating polarity write pulses that are superimposed on a sequence of half cycle pulses of the sustain waveform. Thus the accumulation of charges on the walls of a light-emmitting cell that is required for a write operation is produced by a sequence of write pulses, and each write pulse is lower in amplitude than is required for a single write pulse. The write pulses are progressively shifted ahead in phase to further improve the operation.
    Type: Grant
    Filed: July 1, 1974
    Date of Patent: February 10, 1976
    Assignee: IBM Corporation
    Inventor: Tony Nick Criscimagna