| 摘要 |
<p>PROBLEM TO BE SOLVED: To transmit control information and important medial in specified quality even at deterioration of transmission quality. SOLUTION: A multiplexer divides two kinds of input data streams (a) and (b) each in fixed lengths La and Lb, and makes them into packets 3a and 3b, respectively, and when it transmits the packets 3a and 3b, it transmits them, giving them flags 1 and headers 2a and 2b which slow the dada classification of the divided packets. A separator performs separation, supposing that it is an input data stream (a) if the length of the data to the flag 1 generated next is La and that it is an input data stream (b) if the length is Lb, in case that the header 2 cannot recognize it normally due to a transmission error, etc. The separator continues the subsequent separation processing, judging that a flag 1 exists after a length La from there if the header 2 just before it shows the input data stream (a), and that a flag 1 exists after a length Lb from there if the header 2 shows the input data stream (b), in case that the flag cannot be recognized normally due to a transmission error, etc.</p> |
