| 摘要 |
<p>PURPOSE:To exactly execute the reproducing processing of a cell and the replacing processing of nonsignificant information at high speed by simultaneously comparing a reproducing timing number, sequence number of the cell and window number, judging the time position of the cell according to the result of the comparison and executing processing control. CONSTITUTION:A cell buffer 11, cell buffer management control part 12 and cell processing decision part 13 are provided. The sequence number with modulo configuration expressing the continuity of the cell added to the cell on the transmission side, reproducing timing number expressing the reproducing timing of the cell calculated from terminal velocity on the reception side, and boundary number expressing timing advanced from the reproducing timing only for prescribed timing are compared. According to the compared result, the processing of the said cell is determined. Thus, it can be judged at high speed whether the cell equipped with the sequence number is in the past to the current reproducing timing number or not.</p> |
