Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2007-03-20
2007-03-20
Hsu, Alpus H. (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S466000, C370S474000, C398S058000, C398S074000, C725S109000, C725S119000
Reexamination Certificate
active
10835976
ABSTRACT:
A packet switch router that processes downstream digital information to provide dedicated bandwidth to each subscriber destination on a hybrid fiber coax (HFC) network. The router includes a network module that terminates a network connection, a switch that forwards data from the network module, and a channel module. The channel module includes a switch interface, a cell processing engine, one or more modulators, and a radio frequency (RF) transmitter network. The switch interface forwards packetized data from the switch to the cell processing engine. The cell processing engine organizes the packetized data into multiple data streams, encapsulates data in each stream into data cells, and multiplexes the data cells into a multiplexed cell stream. Each modulator is configured to modulate a multiplexed cell stream into an analog signal. The RF transmitter network up converts and combines a plurality of analog signals into a combined electrical signal for transmission.
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Johnson Robert Edward Lee
Leatherbury Ryan M.
Advent Networks, Inc.
Dillion & Yudell LLP
Hsu Alpus H.
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