Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2007-10-09
2007-10-09
Qureshi, Afsar (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S452000, C370S508000, C370S519000
Reexamination Certificate
active
10323016
ABSTRACT:
In a ring topology digital network propagation delay is reduced A master node transmits a clock signal into the network in one direction. Each slave node propagates the signal to the next slave node without regeneration until the signal is received by the master node. The amount of time the signal takes to travel around the ring, is measured and is the total ring propagation delay. The master node then transmits a clock signal in both directions to the first slave node which measures the difference in their arrival times and transmits the difference to the master node. The process is repeated for each other slave node. Based upon each difference the master node computes the propagation delay for each ring segment. The master node transmits to each slave node the corresponding ring segment propagation delay and each slave node adjusts the phase of the node's clock.
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Cirrus Logic Inc.
Qureshi Afsar
Shifrin Dan
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