Appeal No. 1997-2899
Application No. 08/385,574
first communication link and the second communication
link; and
a receiving means for receiving duplicate information
from the second terminal over the first communication
link and the second communication link,
... and for replacing the information from the first
communications link with corresponding information from
the second communications link upon detection of the
fault indication signal [emphasis added].
We find that Appellant’s claim 24 includes a transmitting
means and a receiving means for simultaneously transmitting
and receiving duplicate information over two communication
links. Additionally, claim 24 requires that the receiving
means monitor the incoming information on both links for a
fault indication signal which is sent anytime a failure in the
communication link occurs. The received information from the
link having a fault signal is replaced by the information from
the other link.
Claim 24 clearly requires all transmissions and receipts of
information to be duplicate and simultaneous over redundant
links. This is further supported by Appellant’s disclosure on
pages 18 and 19 of the specification and Figure 3 which shows
that terminals 310 and 320 transmit and receive two identical
copies of the information over identical networks 301 and 302.
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