摘要:
Upon receiving an obtaining instruction from video image delivering apparatus, mobile terminal position obtainer obtains the current position of a mobile terminal, which the instruction instructs it to obtain. Mobile terminal position transmitter transmits the current position information indicating the current position to video image delivering apparatus. When communicator of video image delivering apparatus receives the current position information, CPU decides whether or not the current position indicated by the current position information is within a delivery range of a video image file. If it is decided that the current position is within the delivery range, television-phone controller delivers the video image file to mobile terminal.
摘要:
Intended is to avoid retransmission requests from congesting and data retransmission from being disabled.The receiver 200, when detecting an error whose error correction by an error correcting code is impossible, transmits a request for retransmitting the block to the transmitter 100 through the unicast network 400, and the transmitter 100 receives the retransmission request and selects either the multicast network 300 or the unicast network 400 according to the number of retransmission requests transmitted from the receiver 200 to control simultaneous retransmission of the block.