METHODS, DEVICES AND COMPUTER PROGRAMS FOR TRANSMITTING OR FOR RECEIVING AND PLAYING MEDIA STREAMS

摘要

A method is carried out by a receiving and playing device (10), for receiving and playing a media stream. The method includes a first playing procedure (s12), a playing mode switching procedure (s14), and a second playing procedure (s16). The first playing procedure (s12) includes receiving a media stream through a communication medium or network (30) and playing the received media stream. The playing mode switching procedure (s14) includes determining (s142) whether a media content about to be received or being received is locally stored and, if so, switching to the second playing procedure (s16). The second playing procedure (s16) includes playing the media content based on at least the locally stored media content. The invention also relates to methods carried out by a transmitting device (20), to receiving and playing devices (10), to transmitting devices (20), and to computer programs.

主权项

1. A method carried out by a receiving and playing device, for receiving and playing a media stream, the method comprising:
a first playing procedure comprising: receiving a media stream through a communication medium or network, and playing the received media stream; a playing mode switching procedure comprising: determining, at the time when the first playing procedure is being carried out, whether a local match for a media content about to be received as part of the media stream received and played in the first playing procedure or being received as part of the media stream received and played in the first playing procedure is found to be locally stored, wherein the step of determining comprises using (i) meta information sent along with the media stream received and played in the first playing procedure and (ii) local content information to assess whether a local match for the media content is found, and, if so, switching from a mode in which the first playing procedure is carried out to a mode in which a second playing procedure is carried out, the second playing procedure comprising playing the media content based on at least the locally stored media content, this involving obtaining, from a network side server, a timestamp indicating the starting time of the media content; and playing the media content based on at least the locally stored media content, starting at the obtained timestamp or continuing to play the media content as if the locally stored media content started at the obtained timestamp.