Patent ID: 9154851
Filing Date: 2015-10-06
Classification: H04H,H04L,H04N

Abstract:
1. A method, comprising: in a detection circuit, receiving an attenuated downstream communication signal for controlling a plurality of switches; using a plurality of bandpass filters to filter the attenuated downstream communication signal into a plurality of downstream bandwidth bands, each downstream bandwidth band related to a corresponding one of the plurality of switches and a corresponding available upstream/downstream bandwidth split; performing an energy detection on each downstream bandwidth band for determining whether a frequency of said downstream bandwidth band contains downstream communication content; and based on a result of the determining on each downstream bandwidth band, controlling the corresponding one of the plurality of switches to one of bypassing and enabling a corresponding low-pass filter of a diplex filter, such that the diplex filter is thereby configured to receive an upstream communication signal and to output a filtered upstream communication signal having a maximum upstream bandwidth that does not conflict with a lowest downstream frequency of said plurality of downstream bandwidth bands that contains downstream communication content.