Patents by Inventor Daniel E. Rittman

Daniel E. Rittman 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).

  • Testing of CATV systems
    Patent number: 6687632
    Abstract: A method and apparatus for determining the location of an impedance mismatch in a digital communication circuit (22) generate (20) at least quasi-random data, transmit the data along the circuit (22) from a transmitting end of the circuit (22), recover (24) reflections from impedance mismatches in the circuit (22) adjacent the transmitting end of the circuit (22), correlate the reflections with the data to generate a correlation result, identify a reflection peak in the result, and multiply the propagation velocity of the data through the circuit (22) by a time delay to the reflection peak.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: February 3, 2004
    Assignee: Trilithic, Inc.
    Inventor: Daniel E. Rittman