Patents by Inventor Spiro Sassalos

Spiro Sassalos 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).

  • Integrated circuit with pin for setting digital address
    Patent number: 8786482
    Abstract: In one embodiment, an integrated circuit includes a pin and a current source for driving current through the pin into an external resistor such as a resistor on a circuit board to generate a pin voltage. The integrated circuit includes an analog-to-digital converter for converting the pin voltage into a digital value, such as an address for the integrated circuit.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: July 22, 2014
    Assignee: Lattice Semiconductor Corporation
    Inventors: Robert Bartel, Spiro Sassalos
  • Clock signal generator for a logic analyzer controlled to lock both edges to a reference clock signal
    Patent number: 5942927
    Abstract: A first comparison circuit compares an internally generated clock signal with a reference signal and produces a first error signal in response to timing differences between rising edges of the clock signal and the reference signal. A second comparison circuit compares the internally generated clock signal with the reference signal and produces a second error signal in response to timing differences between falling edges of the clock signal and the reference signal. The first and second error signals are applied to control inputs of a phase shifter chain to control delay in each stage to reduce the timing error with respect to each edge.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: August 24, 1999
    Assignee: Tektronix, Inc.
    Inventors: Eric P. Etheridge, David J. McKinney, Spiro Sassalos, Grigory Kogan