Appeal No. 1997-3239
Application 08/312,854
from one controller domain to the other controller domain
during a failure mode.
Independent claim 1 is reproduced as follows:
1. In a high speed acyclic serial bus having a plurality
of devices, each device having a plurality of communication
ports, a system for providing redundant access to said devices
comprising:
a first concentrator having a plurality of ports, one of
said ports being connected to a first communications port of
said plurality of communication ports on each of said
plurality of devices;
a second concentrator having a second plurality of ports,
one of said ports of said second plurality of ports being
connected to a second communications port of said plurality of
communication ports on each of said plurality of devices;
first means for enabling a portion of said first
plurality of ports for accessing a corresponding portion of
said plurality of devices through said first concentrator; and
second means for enabling a second portion of said
plurality of ports through said second concentrator for
accessing a second portion of said plurality of devices not
accessed by said first concentrator; and
further comprising complementary first and second
signals, said first signal being used to activate said first
enabling means and said complementary second signal being used
to activate said second enabling means such that each of said
plurality of devices is only access by one concentrator.
The Examiner relies on the following references:
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