Importance

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Abstract

A FIFO for buffering a cell between an incoming stream (D.sub.in) and an outgoing stream (D.sub.out), comprising a memory, a write pointer indicating a first memory location for storing the cell, and a read pointer indicating a second memory location for releasing a stored cell, a controller, and additional memory for storing an additional cell; the controller arranged for: monitoring the additional cell's arrival in the additional memory; storing a pointer value (LOG_PTR) upon the additional cell's arrival, using a momentary write pointer value; monitoring a momentary read pointer value; upon equivalence of the read pointer and LOC_PTR; inserting the stored additional cell into the outgoing stream (D.sub.out); inserting content from the second memory location into the outgoing stream (D.sub.out).

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First Claim