Appeal No. 2002-1044
Application No. 09/017,096
counting means for a number of ATM cells stored in said central
cell memory, and
discarding means for discarding ATM cells packet by packet to
prevent congestion in the central cell memory,
characterized in that the central memory control device comprises:
comparator means connected upstream of the central cell memory,
and
control logic means,
said comparator means cooperating with the counting means and
the control logic means such that, responsive to a programmable
threshold value for the degree of filling of the central cell memory being
reached, and evaluation of information determinable from the header of a
received cell relating to the packet of which the received cell is a part,
each ATM cell of the packet containing said received cell is discarded
before arriving in the central cell memory.
References
The references relied on by the Examiner are as follows:
Bray 5,487,061 Jan. 23, 1996
Norizuki et al. (Norizuki) 5,570,361 Oct. 29, 1996
Kozaki et al. (Kozaki) 5,838,677 Nov. 17, 1998
(filed Apr. 15, 1996)
Des Jardins et al. (Des Jardins) 5,936,939 Aug. 10, 1999
(filed May 22, 1995)
Hatano et al. (Hatano) 5,959,991 Sep. 28, 1999
(filed Oct. 16, 1996)
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