Patents by Inventor Scott E. Schaeffer

Scott E. Schaeffer 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).

  • Signal detect circuitry for a passive GBIC module
    Patent number: 6483806
    Abstract: Transceiver circuitry (10, 200) for use in a GBIC module uses readily available off the shelf components to satisfy the specifications of the GBIC standard. In both passive and active modules, a voltage divider (98) and parallel transistors (94, 96, 100) are utilized to insure that the differential voltage of the received differential signal is at an acceptable level. In active modules, a diode cross over quad (84) is utilized to extend the input range of a low input differential receiver (78) and a coaxial cable driver (60) designed to drive 50 ohms is utilized to drive 150 ohms.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: November 19, 2002
    Assignee: The Whitaker Corporation
    Inventors: Steven L. Flickinger, William L. Herb, Scott E. Schaeffer, Richard D. Miller
  • Transceiver circuitry for a GBIC module
    Patent number: 6418121
    Abstract: Transceiver circuitry (10) for use in a GBIC module uses readily available off the shelf components to satisfy the specifications of the GBIC standard. A diode cross over quad (84) is utilized to extend the input range of a low input differential receiver (78). A voltage divider (98) and parallel transistors (94, 96, 100) are utilized to insure that the differential voltage of the received differential signal is at an acceptable level. A coaxial cable driver (60) designed to drive 50 ohms is utilized to drive 150 ohms.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: July 9, 2002
    Assignee: The Whitaker Corporation
    Inventors: Steven L. Flickinger, William L. Herb, Scott E. Schaeffer, Richard D. Miller