TRANSMISSION DATA STRUCTURE, AND METHOD AND DEVICE FOR TRANSMITTING THE SAME

摘要

By storing and transmitting information on reproduction of division static medium data contained in static medium transmission data, in static medium transmission data preceding that static medium transmission data, when no division static medium data is received, it is possible to judge whether no division static data is contained from the beginning or certain division static data has been lost. Thus, when using static medium such as Timed Text in streaming type distribution, if the data reception device does not receive static medium data, it is judged whether no next medium data to be displayed is present or medium data has been lost during transmission and cannot be displayed, thereby correctly reporting the medium data loss to a user. Moreover, without increasing pre-buffering, it is possible to reduce the time required for packet loss detection and perform retransmission request.