Reverse path upstream signaling for status monitoring
A reverse path signaling circuit is described which provides less noise and interruption when injecting signals upstream to a head end. The reverse path signaling circuit includes a low pass filter, a status monitor, and a common emitter amplifier. The common emitter amplifier has a emitter region w...
Gespeichert in:
Hauptverfasser: | , |
---|---|
Format: | Patent |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | A reverse path signaling circuit is described which provides less noise and interruption when injecting signals upstream to a head end. The reverse path signaling circuit includes a low pass filter, a status monitor, and a common emitter amplifier. The common emitter amplifier has a emitter region which couples to the status monitor. The status monitor couples to the common emitter amplifier as a single-ended input to the to the emitter region. The status monitor injects status monitor signals into the emitter region for passing the status monitor signals upstream to a head end. The low pass filter is coupled to another input on the common emitter amplifier. An output from the common emitter amplifier is taken at a collector region. The reverse path signaling circuit of the present invention does not require the use of a directional coupler as part of the circuit. Systems and methods are further included within the scope of the present invention. |
---|