Method and system for cleaning a frequency band

A method comprising the steps of:

• receiving information transmitted in a clear frequency spectrum from an interactive network device located at a subscriber premise through a cable over a first channel;
• blocking energy in a desired frequency band in a communication network;
• shifting the first channel to a second channel in the desired frequency band;
• and
• transmitting the information to a cable headend through the communication network over the second channel.

A cable access unit comprising:

• a receiver receiving information transmitted in a clear frequency spectrum from an interactive network device located at a subscriber premise through a cable over a first channel;
• a filter coupled to the receiver, the filter blocking energy in a desired frequency band in a communication network;
• a frequency shifter coupled to the filter, the frequency shifter shifting the first channel to a second channel in the desired frequency band;
• and
• a transmitter coupled to the frequency shifter, the transmitter transmitting to a cable headend through the communication network over the second channel.

A method comprising the steps of:

• receiving information transmitted in a clear frequency spectrum from an interactive network device located at a subscriber premise through a cable having a plurality of upstream and downstream channels in a communications network;
• blocking energy in the plurality of upstream channels in the communication network;
• shifting the information from a frequency band outside the plurality of upstream and downstream channels to at least one of the plurality of upstream channels;
• and
• transmitting the information to a cable headend through the communication network.

A cable access unit comprising:

• a receiver receiving information transmitted in a clear frequency spectrum from an interactive network device located at a subscriber premise through a cable having a plurality of upstream and downstream channels;
• a filter coupled to the receiver, the filter blocking energy in the plurality of upstream channels in a communication network;
• a frequency shifter coupled to the filter, the frequency shifter shifting the information from a frequency outside the plurality of upstream and downstream channels to at least one of the plurality of upstream channels;
• and
• a transmitter coupled to the frequency shifter, the transmitter transmitting the information over at least one of the plurality of upstream channels to a cable headend through the communication network.

A system comprising:

• a cable access unit receiving information transmitted over at least one of a plurality of channels outside a plurality of upstream and downstream channels from an interactive network device located at a subscriber premise through a cable having a plurality of upstream and downstream channels in a communication network;
• a filter in the cable access unit coupled to the cable, the filter blocking energy in the plurality of upstream channels in the communication network to reduce ingress noise in the communication network;
• and
• a frequency shifter coupled to the filter the frequency shifter shifting the at least one of the plurality of channels outside the plurality of upstream and downstream channels to at least one of the plurality of upstream channels for upstream transmission through the communication network to a cable headend.

A method comprising the steps of:

• receiving information transmitted over a plurality of channels within a clear frequency spectrum from an interactive network device located at a subscriber premise through a cable over a first plurality of channels;
• blocking energy in the second plurality of channels in a communication network to reduce ingress noise;
• shifting the first plurality of channels to a second plurality of channels within the desired frequency band;
• and
• transmitting the information to a cable headend through the communication network.

A cable access unit comprising:

• a receiver receiving information transmitted over a plurality of channels within a clear frequency spectrum from an interactive network device located at a subscriber premise through a cable having a plurality of upstream and downstream channels in a communication network;
• a filter coupled to the receiver, the filter permitting a downstream signal to be passed from a cable headend through the cable access unit to equipment in the subscriber premises while blocking energy in a desired frequency band to reduce ingress noise;
• a frequency shifter coupled to the filter, the frequency shifter shifting the plurality of channels outside the plurality of upstream and downstream channels to the plurality of upstream channels;
• and
• a transmitter coupled to the frequency shifter, the transmitter transmitting the information over the plurality of upstream channels to the cable headend through the communication network.

A system comprising:

• a cable access unit receiving information transmitted over a plurality of channels from an interactive network device located at a subscriber premise through a cable;
• a filter in the cable access unit coupled to the cable, the filter permitting a downstream signal in a plurality of downstream channels to be passed from the cable headend through the cable access unit to equipment in the subscriber premises while blocking energy from a plurality of upstream channels in a communication network to reduce ingress noise in the communication network;
• and
• a frequency shifter coupled to the filter, the frequency shifter shifting the plurality of channels outside the plurality of upstream and downstream channels to the plurality of upstream channels for upstream transmission through the communication network to a cable headend.