Method and system for providing a return path for signals generated by legacy terminals in an optical network
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United States of America Patent
Stats
-
Feb 27, 2007
Grant Date -
Jan 16, 2003
app pub date -
Jan 8, 2002
filing date -
Jul 5, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A return path system includes inserting RF packets between regular upstream data packets, where the data packets are generated by communication devices such as a computer or internet telephone. The RF packets can be derived from analog RF signals that are produced by legacy video service terminals. In this way, the present invention can provide an RF return path for legacy terminals that shares a return path for regular data packets in an optical network architecture. The invention operates independently of a legacy upstream transmission timing scheme so that the legacy upstream transmission timing scheme can remain effective in preventing data collisions. In other embodiments, the present invention allows for less complex hardware for subscribers that are not taking data services. Further, an optical signal present line in combination with a driver may be employed in order to reduce the amount of hardware in a laser transceiver node.
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