Data processing device and data processing method

摘要

A data processor according to the present invention plays back video and audio from a data stream including video data and audio data, each of which is provided with time information representing its presentation time. The processor includes: a stream acquiring section for acquiring a first data stream and a second data stream continuously; an inserting section for inserting boundary-setting dummy data between the data streams; an analyzing section, which detects the dummy data and associates identification information with the video and audio data of each data stream; a control section for controlling the respective output timings of video data and audio data by reference to the time information of the video data and the time information of the audio data that are associated with the same piece of identification information; and an output section.

主权项

1. A data processor for playing back video and audio from a data stream including video data and audio data, each of the video and audio data being provided with time information representing its presentation time, the data processor comprising:
a stream acquiring section for acquiring a first data stream and a second data stream continuously; an inserting section for inserting boundary-setting dummy data into a data location where the first and second data streams switch each other; an analyzing section, which detects the dummy data, assigns different pieces of identification information to the first and second data streams, and associates the identification information with the video and audio data of each said data stream; a control section for controlling the respective output timings of video represented by video data and audio represented by audio data by reference to the time information of the video data and the time information of the audio data that are associated with the same piece of identification information; and an output section for outputting the video and the audio at the output timings, wherein the control section finds the respective presentation end times of the video and the audio of the first data stream according to the time information added to the video data and the time information added to the audio data, and if the presentation end time of the audio is later than that of the video, the control section stops outputting the audio from the presentation end time of the video through the presentation end time of the audio, and wherein the control section finds the respective presentation start times of the video and the audio of the second data stream according to the time information added to the video data and the time information added to the audio data, and if the presentation start time of the audio is earlier than that of the video, the control section stops outputting the audio from the presentation start time of the audio through the presentation start time of the video.