Method and apparatus for reducing isolation in a home network

Patent metadata

Field	Value
Publication number	US-11070766-B2
Application number	US-201816007842-A
Country	US
Kind code	B2
Filing date	Jun 13, 2018
Priority date	Dec 21, 2010
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

This invention disclosure relates to a community access television (CATV) signal distribution system which improves signal isolation issues for systems which are distributing both CATV signals and in-home entertainment (IHE) signals. The signal distribution system includes a signal input port, a first multi-port signal splitter and a second multi-port signal splitter. The first multi-port signal splitter is coupled to the signal input port through a first diplexer, and the second multi-port signal splitter is coupled to the signal input port through a second diplexer. In some embodiments the first diplexer high-pass node and the second diplexer high-pass node are coupled together. In some embodiment the signal distribution system includes a signal output port coupled to the signal input port through a third diplexer. The high-pass node of the third diplexer is coupled to the high-pass node of the first diplexer.

First claim

The invention claimed is:

1. A community access television (CATV) signal distribution system comprising:
a CATV signal input port configured to connect to a CATV network;
one or more direct signal output ports;
a first plurality of broadband signal output ports configured to connect to a first plurality of in-home entertainment devices;
a second plurality of broadband signal output ports configured to connect to a second plurality of in-home entertainment devices;
a first multi-port signal splitter comprising a first common terminal and a first plurality of leg terminals, the first common terminal configured to connect to a CATV network;
a second multi-port signal splitter comprising a second common terminal and a second plurality of leg terminals;
a third multi-port signal splitter comprising a third common terminal and a third plurality of leg terminals;
a first diplexer comprising a first common node, a first low-pass node, and a first high-pass node;
a second diplexer comprising a second common node, a second low-pass node, and a second high-pass node; and
a third diplexer comprising a third common node, a third low-pass node, and a third high-pass node,
wherein:
the CATV signal input port is configured to connect to a CATV network;
the one or more direct signal output ports connect to the first common node of the first diplexer and are configured to connect to one or more embedded multimedia terminal adapter (eMTA) devices;
the first plurality of broadband signal output ports connect to the second plurality of legs of the second multi-port splitter;
the second plurality of broadband signal output ports connect to the third plurality of legs of the third multi-port splitter;
the first common node of the first multi-port signal splitter connects to the signal input port and is configured to receive the CATV signal from the CATV network as an input;
a first leg of the first multi-port signal splitter connects to the first low-pass node of the first diplexer;
a second leg of the first multi-port signal splitter connects to the second low-pass node of the second diplexer;
a third leg of the first multi-port signal splitter connects to the third low-pass node of the third diplexer;
the first high-pass node of the first diplexer connects to the second high-pass node of the second diplexer, and connects to the third high-pass node of the third diplexer;
the first high-pass node of the first diplexer, the second high-pass node of the second diplexer, and the third high-pass node of the third diplexer are configured to communicate in-home entertainment band signals in a predetermined high-frequency band between the one or more direct signal output ports, the first plurality of broadband signal output ports, and the second plurality broadband signal output ports;
the first diplexer, the second diplexer, and the third diplexer are configured to prevent transmission of in-home entertainment band signals to the CATV signal input port from the one or more direct signal output ports, the first plurality of broadband signal output ports, and the second plurality broadband signal output ports; and
the second common node of the second diplexer is connected to the second common terminal of the second multiport splitter.

2. The CATV signal distribution system of claim 1 further comprising an attenuator circuit coupling the third high-pass node of the third diplexer to the first high-pass node of the first diplexer and to the second high-pass node of the second diplexer.

3. The CATV signal distribution system of claim 2 , wherein the attenuator circuit is configured to bidirectionally conduct the in-home entertainment signals within a predetermined high frequency band.

4. The CATV signal distribution system of claim 2 , wherein the second multi-port signal splitter comprises three two-way splitters.

5. The CATV signal distribution system of claim 2 , wherein the first multi-port signal splitter comprises at least three output ports.

6. The CATV signal distribution system of claim 2 , wherein the third multi-port signal splitter comprises at least four output ports.

7. The CATV signal distribution system of claim 2 , wherein the attenuator circuit includes an equalizer circuit configured to equalize the in-home entertainment signals conducted between the first and second in-home entertainment-compatible subscriber devices.

8. The CATV signal distribution system of claim 2 , wherein the attenuator circuit includes a reflectance circuit configured to control signal reflection of the in-home entertainment signals conducted between the first and second in-home entertainment-compatible subscriber devices.

9. The CATV signal distribution system of claim 2 , wherein the level of attenuation in the attenuator circuit is adjustable from 0 dB to a predetermined level of attenuation.

10. The CATV signal distribution system of claim 2 , wherein:
the first high-pass node of the first diplexer and the second high-pass node of the second diplexer couple to the third high-pass node of the third diplexer through the attenuator; and
the first high-pass node of the first diplexer does not couple to the second high-pass node of the second diplexer through the attenuator.

11. A community access television (CATV) signal distribution system comprising:
a CATV signal input port;
a plurality of broadband output ports;
a first multi-port splitter;
a second multi-port splitter;
a third multi-port splitter;
a first diplexer;
a second diplexer;
a third diplexer; and
a signal output port;
wherein:
a splitter input port of the first multi-port splitter is coupled to the CATV signal input port through the first diplexer and the third multi-port splitter;
a splitter input port of the second multi-port signal splitter is coupled to the CATV signal input port through the second diplexer;
the signal output port is coupled to the CATV signal input port through the third diplexer;
the CATV signal input port is coupled to a low-pass node of the first diplexer, a low-pass node of the second diplexer, and a low-pass node of the third diplexer;
a first leg of the third multi-port splitter connects to the low-pass node of the first diplexer;
a second leg of the third multi-port splitter connects to the low-pass node of the second diplexer;
a third leg of the third multi-port splitter connects to the low-pass node of the third diplexer;
a common node of the third diplexer connects to the signal output port;
a high-pass node of the third diplexer connects to a high-pass node of the first diplexer and a high-pass node of the second diplexer;
the low-pass node of the third diplexer connects to the CATV signal input port; and
the first diplexer, the second diplexer, and the third diplexer are collectively configured to prevent transmission of in-home entertainment band signals to the CATV signal input port from the signal output port, and the plurality of broadband output ports.

12. The CATV signal distribution system of claim 11 , wherein:
a common node of the first diplexer is coupled to a splitter input port of the first multi-port splitter; and
the high-pass node of the first diplexor is coupled to the high-pass node of the third diplexer.

13. The CATV signal distribution system of claim 12 , further comprising an attenuator circuit, wherein:
a common node of the second diplexer connects to a splitter input port of the second multi-port splitter; and
the high-pass node of the second diplexer connects to the high-pass node of the first diplexer through the attenuator circuit.

14. The CATV signal distribution system of claim

Assignees

• Ppc Broadband Inc

Inventors

• Alkan Erdogan

Classifications

• H04N7/104 Primary

  Switchers or splitters · CPC title

• H04N21/436

  Interfacing a local distribution network, e.g. communicating with another STB {or one or more peripheral devices} inside the home · CPC title