Patents by Inventor Francis A. DeLisle

Francis A. DeLisle 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: 5237224
    Abstract: A variable self-correcting on-chip circuit comprised of a plurality of digital circuit components is described, whereby electrical signals are precisely positioned with respect to one another. Electrical signals are converted into a number of pulses within a predefined time window. A first number of pulses obtained from free on-chip circuit oscillation is compared to a second number of pulses derived from a predetermined delay defined by the user. An unequal comparison generates control signals capable of advancing or retarding electrical signals. The delay adjustments account for technology, process, temperature and power supply variations. The compounded effect of these variations translates into a certain delay for which self-correction takes effect.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: August 17, 1993
    Assignee: International Business Machines Corporation
    Inventors: Francis A. DeLisle, Alfred M. Jacoutot