Modulation analyzer and level measurement device
AssigneeJohn Mezzalingua Associates, Inc.
InventorDavid Kelma
Life of this patent
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Abstract
A method is provided for determining a modulation of a CATV channel, the modulation being one of a digital modulation and an analog modulation. The method includes passing at least a portion of a tuner output from a tuner to a RF detector, and passing a RF detector output from the RF detector to a sync detector. The method further includes attenuating at least a portion of a sync detector output to create a remaining portion of the sync detector output, and passing the remaining portion of the sync detector output to a peak detector. The method further includes passing an output of the peak detector to a subsequent device, the output of the peak detector indicating whether the modulation of the CATV channel.
Claims9
A modulation analyzer and level measurement device for use with a CATV system, the device comprising:
- a tuner;
- a band pass filter connected electrically downstream the tuner;
- an RF detector connected electrically downstream the band pass filter;
- a sync detector connected electrically downstream the RF detector;
- and
- a peak detector connected electrically downstream the sync detector.
A method for determining a modulation of a CATV channel, the modulation being one of a digital modulation and an analog modulation, the method comprising:
- passing at least a portion of a tuner output from a tuner to a RF detector;
- passing a RF detector output from the RF detector to a sync detector;
- attenuating at least a portion of a sync detector output to create a remaining portion of the sync detector output;
- and
- passing the remaining portion of the sync detector output to a peak detector,
- passing an output of the peak detector to a subsequent device, the output of the peak detector indicating whether the modulation of the CATV channel.
Dependencies are inferred from the claim text.