Data transfer system

A data transfer system for data transfer between a plurality of information processors connected to a communication line, comprising at least one data transfer set of one sending information processor and one receiving information processor among the plurality of information processors;

• said sending information processor comprising:
• a block size determining means for determining a block size in which original data to be sent to the receiving information processor is to be divided, on the basis of the transmission rate of the communication line and predetermined allowable delay time for which data communication is allowed to be delayed;
• a transfer time interval determining means for determining a transfer time interval at which data blocks are to be transferred, on the basis of the block size determined by the block size determining means, a transmission bandwidth to be used for sending the data blocks of the block size and the number of simultaneously active data transfer sets of one sending information processor and one receiving information processor;
• and
• a dividing/transmitting means for dividing the original data to be sent into data blocks of the block size determined by the block size determining means and sending the data blocks to the receiving information processor at the transfer time interval determined by the transfer time interval determining means;
• said receiving information processor comprising:
• a data block receiving means for receiving the data blocks formed by the dividing/transmitting means and sent thereto and for reconstructing the original data.