Changing communication mode in a CATV pathway using mute commands
First Claim
1. In a cable distribution network environment that includes a cable hub and a cable node, a method for the cable node to configure the cable hub to operate in either a first communication mode or a second communication mode to avoid inconsistent communication with the cable hub, the method comprising the following:
- an act of the cable node transmitting a mute command in a first data stream to the cable hub using a first communication mode, the mute command causing the cable hub to abstain from recognizing any communications received from the cable node subsequent to the mute command until a switch command is received from the cable node;
an act of the cable node transmitting the switch command to the cable hub; and
an act of the cable node transmitting a second data stream to the cable hub using the second communication mode after transmitting the switch command,wherein RF data is transmitted without Ethernet data over a return path to the cable hub in one of the first and second communication modes and wherein RF data plus Ethernet data is transmitted over the return path in the other one of the first and second communication modes.
2 Assignments
0 Petitions
Accused Products
Abstract
A cable node and a cable hub that communicate on a CATV network are configured to switch communication modes without signal loss or degradation due to delays in switching communication modes. In particular, a cable node sends one or more mute commands in an outgoing data stream to the cable hub, causing the cable hub to disable the RF outputs. Afterward, or along with the one or more mute commands, the cable node can send a switch mode command, thereby causing the cable hub to switch to the appropriate next communication mode, such as a communication mode using a new compression rate. When the cable hub has switched to the appropriate next communication mode, the cable hub can then properly receive and decode a corresponding data stream using the next communication mode.
-
Citations
43 Claims
-
1. In a cable distribution network environment that includes a cable hub and a cable node, a method for the cable node to configure the cable hub to operate in either a first communication mode or a second communication mode to avoid inconsistent communication with the cable hub, the method comprising the following:
-
an act of the cable node transmitting a mute command in a first data stream to the cable hub using a first communication mode, the mute command causing the cable hub to abstain from recognizing any communications received from the cable node subsequent to the mute command until a switch command is received from the cable node; an act of the cable node transmitting the switch command to the cable hub; and an act of the cable node transmitting a second data stream to the cable hub using the second communication mode after transmitting the switch command, wherein RF data is transmitted without Ethernet data over a return path to the cable hub in one of the first and second communication modes and wherein RF data plus Ethernet data is transmitted over the return path in the other one of the first and second communication modes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 43)
-
-
16. In a cable distribution network environment that includes a cable hub and a cable node, a method for the cable hub to be configured in either a first communication mode or a second communication mode as appropriate in order to avoid inconsistent communications with the cable node, the method comprising the following:
-
an act of the cable hub receiving one or more of a predetermined number of mute commands from the cable node while receiving a first data stream using one of a first and a second communication mode; in response to receiving the one or more mute commands, an act of the cable hub abstaining from changing its current state until receiving all of the predetermined number of mute commands from the cable node; after the act of the cable hub receiving all of the predetermined number of mute commands, an act of the cable hub disabling RF outputs so as to prevent transmission of communications through the RF outputs until a predetermined number of switch mode commands are received; and after the act of the cable hub receiving the predetermined number of switch mode commands, an act of the cable hub receiving a second data stream from the cable node using the other one of the first and second communication modes, wherein RF data is received without Ethernet data over a return path to the cable hub in one of the first and second communication modes and wherein RF data plus Ethernet data is received over the return path in the other one of the first and second communication modes. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. A cable node for use in a cable distribution network environment that also includes a cable hub, the cable node being configured to perform the following:
-
an act of the cable node transmitting a mute command in a first data stream to the cable hub, the first data stream being transmitted using a first communication mode and the mute command causing the cable hub to abstain from activating one or more RF outputs until a switch command is received from the cable node; an act of the cable node transmitting the switch command to the cable hub; and an act of the cable node transmitting a second data stream to the cable hub using a second communication mode while and/or after transmitting the switch command, wherein RF data is transmitted without Ethernet data using one of the first and second communication modes and wherein RF data plus Ethernet data is transmitted using the other one of the first and second communication modes. - View Dependent Claims (30, 31, 32, 33)
-
-
34. A cable hub for use in a cable distribution network environment that includes a cable hub and a cable node, the cable hub being configured to perform the following:
-
in response to receiving a mute command from the cable node while receiving a first data stream using one of a first and a second communication mode, an act of the cable hub disabling RF outputs until receiving a switch mode command from the cable node; after the act of the cable hub receiving the mute command, an act of the cable hub receiving a subsequent communication that would be transmitted through the RF outputs but for the mute state of the RF outputs; after the act of the cable hub receiving the subsequent communication, an act of the cable hub receiving the switch mode command from the cable node thereby causing the cable hub to switch to the other of the first and second communication modes; and after the act of the cable hub receiving the switch mode command, an act of the cable hub receiving a second data stream from the cable node using the other one of the first and second communication modes, wherein RF data is received without Ethernet data over a return path to the cable hub in one of the first and second communication modes and wherein RF data plus Ethernet data is received over the return path in the other one of the first and second communication modes. - View Dependent Claims (35, 36)
-
-
37. In a cable distribution network environment that includes a cable hub and a cable node, a method for the cable node to configure the cable hub to operate in either a first communication mode or a second communication mode to avoid inconsistent communication with the cable hub, the method comprising the following:
-
an act of the cable node transmitting a mute command in a first data stream to the cable hub using a first communication mode, the mute command causing the cable hub to abstain from recognizing any communications received from the cable node subsequent to the mute command until a switch mode command is received from the cable node; an act of the cable node transmitting the switch mode command to the cable hub; and an act of the cable node transmitting a second data stream to the cable hub using the second communication mode after transmitting the switch mode command, wherein RF data is transmitted with substantially no non-RF data over a return path to the cable hub in one of the first and second communication modes and wherein RF data plus non-RF data is transmitted over the return path in the other one of the first and second communication modes. - View Dependent Claims (38)
-
-
39. In a cable distribution network environment that includes a cable hub and a cable node, a method for the cable hub to be configured in either a first communication mode or a second communication mode as appropriate in order to avoid inconsistent communications with the cable node, the method comprising the following:
-
an act of the cable hub receiving one or more of a predetermined number of mute commands from the cable node while receiving a first data stream using one of a first and a second communication mode; in response to receiving the one or more mute commands, an act of the cable hub abstaining from changing its current state until receiving all of the predetermined number of mute commands from the cable node; after the act of the cable hub receiving all of the predetermined number of mute commands, an act of the cable hub disabling RF outputs; and after the act of the cable hub receiving a predetermined number of switch mode commands, an act of the cable hub enabling the RF outputs and receiving a second data stream from the cable node using the other one of the first and second communication modes, wherein RF data is received with substantially no non-RF data over a return path to the cable hub in one of the first and second communication modes and wherein RF data plus non-RF data is received over the return path in the other one of the first and second communication modes. - View Dependent Claims (40)
-
-
41. A cable node for use in a cable distribution network environment that also includes a cable hub, the cable node being further configured to perform the following:
-
an act of the cable node transmitting a mute command in a first data stream to the cable hub, the first data stream being transmitted using a first communication mode and the mute command causing the cable hub to abstain from activating one or more RF outputs until a switch command is received from the cable node; an act of the cable node transmitting the switch command to the cable hub; and an act of the cable node transmitting a second data stream to the cable hub using a second communication mode while and/or after transmitting the switch command, wherein RF data is transmitted with substantially no non-RF data using one of the first and second communication modes and wherein RF data plus non-RF data is transmitted using the other one of the first and second communication modes.
-
-
42. A cable hub for use in a cable distribution network environment that includes a cable hub and a cable node, the cable hub further being configured to perform the following:
-
in response to receiving a mute command from the cable node while receiving a first data stream using one of a first and a second communication mode, an act of the cable hub disabling RF outputs until receiving a switch mode command from the cable node; after the act of the cable hub receiving the mute command, an act of the cable hub receiving a subsequent communication that would be transmitted through the RF outputs but for the mute state of the RF outputs; after the act of the cable hub receiving the subsequent communication, an act of the cable hub receiving the switch mode command from the cable node thereby causing the cable hub to switch to the other of the first and second communication modes; and after the act of the cable hub receiving the switch mode command, an act of the cable hub receiving a second data stream from the cable node using the other one of the first and second communication modes, wherein RF data is received with substantially no non-RF data over a return path to the cable hub in one of the first and second communication modes and wherein RF data plus non-RF data is received over the return path in the other one of the first and second communication modes.
-
Specification