Patents by Inventor Daniel F. Zurcher

Daniel F. Zurcher 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).

  • Minimizing signal reflection along a transmission line without terminating the transmission line
    Patent number: 5770950
    Abstract: In a data transmission system having a first and a second data transmission device and a transmission line that is not terminated, a method of minimizing signal reflection along the transmission line is described that includes the step of connecting the first and second data transmission devices to the transmission line such that the distance between the first and second data transmission devices is substantially proportional to a wavelength of a predetermined frequency. Data to be transmitted from the first data transmission device to the second data transmission device via the transmission line are encoded in the first data transmission device such that energy of the encoded data is substantially concentrated around the predetermined frequency to minimize the signal reflection without terminating the transmission line. A data transmission system with minimized signal reflection is also described.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: June 23, 1998
    Assignee: Cisco Systems, Inc.
    Inventors: Daniel F. Zurcher, Ralph P. Trefney