Patents by Inventor Calvin W. Stover

Calvin W. Stover 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).

  • Automatic slope and gain (ASG) detector technique including a pilot signal
    Patent number: 6587012
    Abstract: An apparatus (7) for switching from a first pilot signal and a second pilot signal on a system transporting a plurality of signals. A tuner (30) receives the signals and provides an output signal to a loop compensation circuit (26). The tuner includes a bandpass filter (22) for removing signals other than the selected pilot signal from the output of the tuner. The output of the bandpass filter is provided to a detector circuit (24, 25). The output of the detector is compared with a reference signal (28) by the loop compensation circuit (28). A microcontroller (39) sends a tuning command to the tuner which causes the tuner to switch from tuning to the first pilot signal to tuning to the second pilot signal and also sends a new reference voltage to the loop compensation circuit. Thus, if the input signal changes from analog to digital modulation on the pilot channel, the set-point, or target level of the reference signal, will automatically change to provide the correct value for operation of the circuit.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: July 1, 2003
    Assignee: ARRIS International, Inc.
    Inventors: James Farmer, John J. Kenny, John S. Hollabaugh, Calvin W. Stover