Apparatus for transmitting and receiving interleaved error correction coded data on a transmission frame.

摘要

It is an object of this invention to carry out the error correcting coding for random errors and cell loss effectively and to obtain a transmitter for coding error correction codes and a receiver for decoding error correction code on a transmission frame which minimizes transmission delay. This apparatus comprises following facilities; Data content of N x L symbols is assumed here to be the unit of a transmission frame. A buffer memory which divides N data symbols into p blocks and stores the p data blocks of L cells, a check code generator which carries out the error correcting coding in the unit of p blocks in the orthogonal direction of transmission, a cell composer which selects a specific cell of p blocks N data symbols and generates a transmission cell and a counter which appends an identifier to the top of cells in the transmission direction. The cell with the identifier is transmitted after being replaced with a part of coding cells as requested.