Patent ID: 6185211
Filing Date: 2001-02-06
Classification: H04L

Abstract:
An output buffer type ATM cell exchange system, comprising:an input arrangement for receiving cells via n input ports, each of the cells having destination information;an output arrangement for emitting cells via n output ports in accordance with their destination information; anda buffer arrangement between the input arrangement and the output arrangement, the buffer arrangement including at least n sub-buffer units,wherein each sub-buffer unit includes a buffer memory unit and a plurality of address filters, each address filter receiving a plurality of groups of cell information, each group of cell information including information contained in a corresponding one of the cells that was received by the input arrangement, each address filter additionally receiving destination information derived from the corresponding cells for the groups of cell information, and each address filter additionally receiving destination-set data corresponding to one of the n output ports, andwherein each address filter includes a plurality of parallel expansion units for parallelly expanding the groups of cell information, a multiplexer for multiplexing the parallelly-expanded groups, and a write controller which allows a parallelly-expanded and multiplexed group of cell information whose destination information agrees with the destination-set data to be written into the buffer memory unit.