Abstract: A playback device for a multimedia file is provided. The playback device is applied to a player that switches a channel according to a control signal. The playback device for a multimedia file includes: a processing unit, configured to access one of a plurality of sets of playlist link information from a look-up table according to the control signal, and to obtain a playlist according to the selected playlist link information; a multimedia content identification unit, configured to access the multimedia file according to contents of the playlist; and an image processing unit, configured to process the multimedia file and to transmit the processed multimedia file to a display module for display.

Abstract: A method and system for providing functionality similar to that found in a DVR but mostly or completely contained within a television set is disclosed. A memory stores packets representing a portion of one or more programs in the broadcast stream and allows a viewer to replay that portion of the program using some of the functions available on a DVR, such as pause, rewind, and fast forward. The packet stream is divided into groups of equal length and fixed time duration, for example one second, and stored in sequential order in the memory. This allows for the storage and retrieval of content without the need for an index file, without adding a timestamp to the program data packets, and without separating the audio portion from the video portion of the program and then having to synchronize and recombine them.