Interfacing at least one information stream with at least one modulator
First Claim
Patent Images
1. A method for interfacing with a modulator in a broadband communication system, the method comprising the steps of:
- receiving a plurality of packet streams, the packet streams containing a plurality of packets, including packets containing reverse channel synchronization messages;
buffering each packet from the plurality of packet streams;
detecting a packet identifier within each packet;
remapping the packet identifier within each packet; and
combining the plurality of packet streams into a single stream.
3 Assignments
0 Petitions
Accused Products
Abstract
An interface is provided for interfacing at least one information stream with at least one modulator in the headend or hub of a broadband communications system. The interface allows for separating the media access control function from the modulator. By updating timing references, variable delays are handled appropriately.
-
Citations
41 Claims
-
1. A method for interfacing with a modulator in a broadband communication system, the method comprising the steps of:
-
receiving a plurality of packet streams, the packet streams containing a plurality of packets, including packets containing reverse channel synchronization messages;
buffering each packet from the plurality of packet streams;
detecting a packet identifier within each packet;
remapping the packet identifier within each packet; and
combining the plurality of packet streams into a single stream. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method for interfacing with a modulator in a broadband communication system, the method comprising the steps of:
-
receiving a plurality of packet streams, the packet streams containing a plurality of transport packets, including shared reverse channel timing control information; and
adjusting shared reverse channel timing control information in the plurality of packets. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
-
-
30. An apparatus for interfacing a plurality of information streams, the information streams comprising data streams conforming to the DOCSIS standard, each data stream comprising a plurality of transport packets, the plurality of transport packets conforming to the MPEG protocol, each of the plurality of transport packets having a packet identification, the apparatus comprising:
-
a plurality of buffers, each buffer containing one of the plurality of information streams;
a selector, configured to select a transport packet from the plurality of buffers;
a remapper, configured to remap a packet identification of the transport packet of the selected stream with a unique packet identification, the unique packet identification corresponding a source of the information stream; and
a time reference adjuster, configured to adjust the time reference of the transport packet of the selected data stream; and
an asynchronous serial interface. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
-
-
39. An apparatus for interfacing with a modulator in a broadband communication system, the apparatus comprising:
-
a plurality of buffers configured to receive individual packets from a plurality of packet streams including packets containing reverse channel synchronization messages;
a detector configured to detect a packet identifier within each packet;
a remapper configured to remap the packet identifier within each packet; and
an asynchronous serial interface.
-
-
40. An apparatus for interfacing with a modulator in a broadband communication system, the apparatus comprising:
-
a multiplexer configured to integrate a plurality of packet streams into one stream containing a plurality of transport packets, including packets sharing a reverse channel; and
a timing control adjuster configured to adjust the timing control of the shared reverse channel in the plurality of packets. - View Dependent Claims (41)
-
Specification