Method and apparatus of channel switching using pre-acquisited PSI table

摘要

The present invention provides a method and apparatus for switching channels to reduce channel zapping time, which use channel information generated prior to channel switching and generates audio and video data of a switched channel, thereby skipping a process of calculating channel information of a channel to be switched at the time of channel switching.

主权项

1. A method for switching channels carried out by a media play apparatus, the method comprising:
obtaining channel information about a plurality of channels; receiving a channel switching signal; and generating channel data according to the channel switching signal by using the obtained channel information, wherein the channel information is included in a transport stream of a currently received channel including a program association table (PAT), and the PAT includes (i) transport stream identifiers identifying the transport stream of the currently received channel and other transport streams of other channels, and (ii) an actual transport stream flag specifying position of a transport stream identifier of the transport stream of the currently received channel on a transport stream identifier field containing the transport stream identifiers.