| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To promptly and surely transmit information regarding an information transmission system by which the same piece of information from a master station is transmitted to a plurality of slave stations and to provide a transmission control method. <P>SOLUTION: The information transmission system transmits the same piece of information from the master station 1 to a plurality of the slave stations 2-1 to 2-n via a network 3, the master station 1 is provided with a control part 11 that performs a processing for transmitting the same piece of information to a plurality of the slave stations 2-1 to 2-n by multi-cast by using a multi-cast router 4 and for re-transmitting the information to the slave stations which can not receive delivery confirmation from the slave stations by unicast, a transmission processing part 12, a reception processing part 13 that receives delivery confirmation and a data base 14 and the slave stations 2-1 to 2-n are provided with information processing parts 21 that receives the information from the master station 1 and performs transmission processings of the delivery confirmation to the master station 1 and transmission/reception parts 22. <P>COPYRIGHT: (C)2003,JPO</p> |
