Using scalable codecs for providing channel zapping information to broadcast receivers

摘要

Scalable codecs are used for transmitting channel zapping data for one or more programs using timeslicing. The main codec layer may be utilized also for the zapping data, and the higher layers may be used in the primary channels. Zapping data may be provided to mobile terminals via a wireless multicast network, such as a DVB-H network, using timeslicing and providing the scalably encoded zapping data as part of the source stream.

主权项

1. A method comprising:
scalably encoding a core layer of a video stream for a digital broadcast service;
scalably encoding at least one enhancement layer of the video stream for the digital broadcast service;generating signaling information that provides a mapping of the scalably encoded core layer of the video stream andthe scalably encoded at least one enhancement layer of the video stream to a first timeslice,said mapping indicating to a receiver that data bursts received during the first timeslice include the scalably encoded core layer of the video stream and the scalably encoded at least one enhancement layer of the video stream; broadcast transmitting the signaling information in a second timeslice; and broadcast transmitting, in the first timeslice, a data burst including
the scalably encoded core layer of the video stream andthe scalably encoded at least one enhancement layer of the video stream.