| 摘要 |
In a multiplexing apparatus, input data sequences of two types a and b are packetized using fixed lengths La and Lb so as to produce packets 3a and 3b, respectively. A flag 1 and headers 2a and 2b indicating a data type of packet are attached to the packets 3a and 3b for transmission. In a demultiplexing apparatus, when the header 2 cannot be properly identified due to a transmission error or the like, subsequent demultiplexing steps are performed by estimating that the subsequent data is the input data sequence a, when the length La occurs before the next flag 1, and estimating that the subsequent data is the input data sequence b, when the length Lb occurs. When the flag 1 cannot be properly identified due to a transmission error or the like, subsequent demultiplexing steps are performed by determining that the flag 1 is expected at the length La from the previous header 2 when the previous header 2 indicates the input data sequence a, and determining that the flag 1 is expected at the length Lb from the previous header 2 when the previous header 2 indicates the input data sequence b. <IMAGE> |
