Patents by Inventor Sam M. Weaver

Sam M. Weaver 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).

  • Dynamic input latch
    Patent number: 4760283
    Abstract: An output circuit (10) prevents the propagation of false signals caused by inductive voltages present at the power supply (Vcc) and ground (46) nodes by latching the input signal until the inductive voltages have dissipated. Inverting stages (28, 30 and 32) provide a predetermined time interval over which the input signal is latched.
    Type: Grant
    Filed: November 17, 1987
    Date of Patent: July 26, 1988
    Assignee: Texas Instruments Incorporated
    Inventor: Sam M. Weaver
  • Integrated circuit distributed geometry to reduce switching noise
    Patent number: 4725747
    Abstract: A complimentary output pair (10) having a P-channel transistor (12) and an N-channel transistor (14) prevents output voltage spikes due to rapid changes in current with respect to time at the V.sub.cc power supply and ground (32) nodes by using a "graded turn-on." Both the P-channel transistor (12) and the N-channel (14) utilize a serpentine polysilicon gate (16), (24), in order to sequentially turn on the sub-transistors in response to a changing input. Pull-up (36) and pull-down (40) transistors are used to turn the sub-transistors (21a-j, 29a-f) off simultaneously.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: February 16, 1988
    Assignee: Texas Instruments Incorporated
    Inventors: Dale P. Stein, Sam M. Weaver, James C. Spurlin, Steven E. Marum