TH82934B - Synchronous data stream packing. - Google Patents

Abstract

The DC60 provides a methodology and equipment for synchronously packing of contextually different groups of AV data streams in parallel presentation. The methodology includes a procedure for identifying (210) groups of subtitle/caption text and/or audio data streams that have a time-of-arrival stamp and/or presentation time-of-show stamp that matches the time-of-arrival stamp and/or presentation time-of-show stamp, respectively, of the video data stream. The methodology also includes a packing procedure (220) of the video object unit (VOBU) and/or transport stream (TS) with subtitle/caption text and audio and video data streams that have matching time-of-show stamps. Such methods also include the compression (220) process of video object units (VOBU) and/or transport streams (TS) with subtitles/captions and timestamp audio and video data packets.

Claims (10)

1. A method for synchronized compression of contextually different data streams between A/V data streams in parallel presentation, comprising the identification (210, 310) subtitle/narrative text data groups and/or audio data groups with arrival timestamps and/or presentation timestamps that match the arrival timestamps and/or presentation timestamps, respectively, of the video data group, and the compression (220, 320) of video object units (VOBU) and/or transport streams (TS) with subtitle/narrative text data groups and audio data groups and video data groups with matching timestamps. 2. The method of claim 1, which is performed in one of the following digital multi-function disc (DVD) players, digital video disc (DVD) players, high-definition digital multi-function disc (HD DVD) players and Blu-ray (BD) players. 3. A machine-readable program storage device that defines the format of a program of executable instructions to perform the method for synchronized packing of contextually different data groups between A/V data streams in parallel presentation as specified in Claim 1. 4. A device for synchronized data stream compression of contextually different data groups between A/V data streams in parallel presentation, comprising a path for identifying subtitle/narration text or audio data groups with an arrival time stamp and/or presentation time stamp that matches the arrival time stamp and/or presentation time stamp, respectively, of the video data group, and a path for compressing the video object unit (VOBU) and/or transport stream (TS) with the subtitle/narration text, audio, and video data groups that have matching timestamps. 5. The method of claim paragraph 4 is performed on one of the following digital multi-function disc (DVD) players, digital video disc (DVD) players, high-definition digital multi-function disc (HD DVD) players, and Blu-ray (BD) players. 6. Method for presenting a different A/V stream from a number of contextually different A/V streams in parallel presentation, which involves packing (410) the audio frame header into the audio stream at the beginning of the VOBU at one of the InterLeaVe (ILVU) units or camera change point markers in the transport stream (TS), and packing (420) the final audio stream into the final VOBU in the ILVU or another ILVU in the same A/V stream of one or more units before another camera change point marker in the TS, so that it ends with the completed audio frame. 7. The method of claim number 6, which is performed in one of the following digital multi-function disc (DVD) players, digital video disc (DVD) players, high-definition digital multi-function disc (HD DVD) players and Blu-ray (BD) players. 8. The method of claim number 6, in which the final video data group is compressed in such a way that the subdivision of the audio frame is not present at any ILVU boundary or marker, or changes the camera angle. 9. The method of claim number 6, which also includes the procedure for packing the group of text/description data to begin with the Text Unit (SPU) header and the Event Start header (430). 10. A machine-readable program storage device that defines the exact form of an executable instruction program to execute different A/V stream presentation algorithms from a number of contextually different A/V streams in parallel presentation as specified in Claim 6.