Apparatus and method for generating data stream and recording/replaying apparatus using the same

A recording/replaying apparatus comprising:

• a drive unit on which a disk is set;
• a data stream generating unit which outputs an output data stream generated from video data and audio data;
• and
• a control unit which controls said drive unit to write said output data stream in said disk, and
• wherein said data stream generating unit comprises:
• a storage unit;
• and
• a control module which generates a video elementary stream and an audio elementary stream from said video data and audio data to store in said storage unit, and generates and stores a navigation pack in said storage unit, determines an output order of said navigation pack, a plurality of video packs generated from said video elementary steam and a plurality of audio packs generated from said audio elementary steam based on a unit size of an outputs data stream, a data quantity of said video elementary steam and a data quantity of said audio elementary steam, while updating said navigation pack, and reads out from said storage unit and outputs said navigation pack, said plurality of video packs, said plurality of audio packs as said output data stream based on said output order.

A data stream generating method for a recording/replaying apparatus, comprising the steps of:

• (a) determining a number of packs for a unit size;
• (b) generating a vide elementary stream and an audio elementary stream from video data and audio data to store in a storage unit;
• (c) generating a navigation pack;
• (d) determining an output order of said navigation pack, a plurality of video packs generated from said video elementary stream and a plurality of audio packs generated from said audio elementary stream in the unit size based on a unit size of an outputs data stream, a data quantity of said video elementary steam and a data quantity of said audio elementary steam, while updating said navigation pack;
• and
• (e) reading out said navigation pack, said plurality of video packs, and said plurality of audio packs from said storage unit based on the output order to output as the output data stream.