Patents by Inventor Stephen D. Mariuz

Stephen D. Mariuz 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).

  • Analog-to-digital converter with offset reduction loop
    Patent number: 5523756
    Abstract: An analog-to-digital converter with an offset reduction loop detects the presence/absence of an analog input signal having a zero mean value. The analog input signal is converted to a digital signal by the analog-to-digital converter. The least significant bits of the digital signal are compared with a decision threshold to generate an indicator signal representing the presence/absence of the analog input signal. Arbitrary d.c. offsets in the digital signal are compensated by generating a d.c. offset compensation signal from the most significant bit of the digital signal with respect to a mid-logic reference voltage. The d.c. offset compensation signal is added to the analog input signal prior to conversion to the digital signal.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: June 4, 1996
    Assignee: The Grass Valley Group, Inc.
    Inventors: Stephen D. Mariuz, Eric Foasberg