Patent ID: 8112783
Filing Date: 2012-02-07
Classification: H04N

Abstract:
1. A method of adjusting output time of caption information included in a multimedia transport stream, the method comprising: receiving an input of a time value for adjusting the output time of the caption information, from a user through a user interface; by demultiplexing the multimedia transport stream, dividing the multimedia transport stream into a video packet, an audio packet, and a data packet comprising the caption information, decoding each packet, and storing the decoded packets in buffers corresponding to a type of packet; resetting the output time of the caption information by adding the input time value to or subtracting the input time value from an output time included in at least one of the video packet and the audio packet, after the decoding of each packet; according to the reset output time of the caption information, blending the caption information of the data packet stored in the buffer with at least one of video information and audio information respectively of the video packet and the audio packet; and presenting the blended information on a screen.