Patents by Inventor Emilio Colao

Emilio Colao 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: 4575647
    Abstract: A network composed of a plurality of compensated current switch emitter-follower logic circuits and a generator of a current source control potential for the current sources of the logic circuits in which a symmetrical relationship between UP and DOWN logic levels is maintained at all times. A logic level tracking signal which tracks changes in the UP and DOWN logic levels in the logic circuits is produced by simulating at least a portion of one of the logic circuits. The logic level tracking signal is compared with the reference potential used for the logic levels, preferably ground, by a differential amplifier. The output of the differential amplifier is buffered and suitably level shifted to produce the current source control potential. The current source control potential is applied from the single control potential generator to each of the logic circuits. The control potential is also applied to the control input of a current source portion of the simulating circuit.
    Type: Grant
    Filed: July 8, 1983
    Date of Patent: March 11, 1986
    Assignee: International Business Machines Corporation
    Inventors: Gerard J. Ashton, Emilio Colao, Joseph R. Cavaliere