Data transmission method and data trasmission system

Abstract

A data transmission method and a data transmission system not requiring a large delay unit for multiplexing and composition and capable of reducing the hardware scale, wherein when transmitting data among multiple points from a plurality of terminals arranged in a network, when the data at multiple points are transmitted to the terminals, in the network, identical packets are added different time stamps in accordance with the transmission delays, whereby the data shifted in accordance with the transmission delays are transmitted.

1 - 7 . (canceled)  
   
   
       8 . A data transmission method for transmitting a plurality of data streams having different degrees of importance among multiple points from a plurality of terminals arranged in a network, comprising 
 demultiplexing said plurality of data streams having different degrees of importance in the middle of the transmission line,    transmitting data where continuity is regarded as important through a network having a higher quality of service and transmitting data for which discontinuity is permitted through a network having a lower quality of service, and    combining the plurality of data transmitted through the different networks again before the data arrive at the destination terminals and transmitting the same to the terminals.    
   
   
       9 - 15 . (canceled)  
   
   
       16 . A data transmission system for transmitting a plurality of data streams having different degrees of importance among multiple points from a plurality of terminals arranged in a network, comprising; 
 a first network having a higher quality of service,    a second network having a lower quality of service than the first network,    a first device for demultiplexing said plurality of data streams having different degrees of importance in the middle of the transmission line, transmitting data where continuity is regarded as important through the first network, transmitting data for which discontinuity is permitted through the second network, and a second device for combining the plurality of data transmitted through the different networks again before the data arrive at the destination terminals and transmitting the same to the terminals.