| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent an increase in time required for detecting a reception response even when the reception response is lost on the network. <P>SOLUTION: There are provided a data reception module 101 for receiving data transmitted by a distribution server with a multicast system, a reception response frame analysis module 103 for detecting a reception data reception device which has already received the data among the other data reception devices based on reception response frames transmitted by other data reception devices with the multicast system, and a reception response transmission frame transmission module 105 for transmitting the reception response frame containing information on the data reception device detected by the reception response frame analysis module 103 and the own device to the distribution server and the other data reception devices when the data reception module 101 has received the data. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
