Cable sensor for sensing a dc signal from a cable headend

Details Cable sensor for sensing a dc signal from a cable headend Cable sensor for sensing a dc signal from a cable headend

H - Electricity

04

N

350/20

H04N 7/16 (2006.01)

Patent

CA 1240790

ABSTRACT OF THE DISCLOSURE A cable sensor for sensing a DC signal sent by a cable system's headend in order to switch a converter from converting one set of frequencies to another. When the cable sensor detects such a DC signal, it provides isolation from the DC for a cable TV ratings monitor connected to the cable system and further pro- vides a signal to the monitor that the signal has occurred in order for the monitor to switch frequency/program assignments.

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