Patent ID: 9184928
Filing Date: 2015-11-10
Classification: H04L,H04N

Abstract:
1. A communications terminal included among communications terminals each of which receives stream data distributed from a root terminal and reproduces the stream data, the communications terminals having one parent terminal and child terminals, such that the communication terminals form an Application Layer Multicast (ALM) tree to sequentially transmit retransmission data of the stream data from the parent terminal to the child terminals, and the communications terminal comprising: a reproduction delay time determining unit configured to select a longest round-trip delay time from among round-trip delay times for sections between the root terminal and the communications terminals, and determine a reproduction delay time based on the longest round-trip delay time selected, each of the round-trip delay times being a time required for transmission and reception of data through one of the sections, each section being between two neighboring terminals among the communications terminals on the ALM tree; and a reproduction control unit configured to reproduce the stream data received from the root terminal delayed by the reproduction delay time determined by the reproduction delay time determining unit.