Data buffer using dummy data

摘要

Data buffering apparatus comprises a data memory in which input data are written to the memory in contiguous groups at memory addresses defined by a write pointer and data are read from the memory at a memory address defined by a read pointer; and means for writing a dummy group of data at the end of at least some of the input data groups, the dummy groups of data being read from the memory and discarded before a subsequently written input data group is read.