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TV Signal

Method-of-digitally-compressed-video-and-audio-data

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Method of digitally compressed video and audio data

Details

Inventors: Kunihiro, Hideto;
Assignee: Nec Corporation (Tokyo, JP); Nec Home Electronics, Ltd. (Osaka, JP)
Primary Examiner: Chin; Tommy P.
Assistant Examiner: Truong; Khoi
Attorney, Agent or Firm: Sughrue, Mion, Zinn, Macpeak & Seas

A data recording system for recording in a CD-ROM or similar recording medium a data file containing data such as compressed audio and video data and an index file containing index data for searching the individual data of the data file. The data stored in the data file are recorded in a CD-ROM in three hierarchical stages, i.e., titles, scenes and shots or chapters, scenes and clips. The index file has a hierarchical format associated with that of the data file in order to manage the data of the data file in consecutive stages.

DETAILED DESCRIPTION It is therefore an object of the present invention to provide a data recording system capable of easily recording in a recording medium a data file which contains compressed audio and video data and an index file containing index data for searching the data file, and allowing desired data to be searched for with ease.
It is another object of the present invention to provide a data format of a data file containing compressed audio and video data to be recorded in a recording medium, and a data format of an index file containing index data for searching the individual recorded data.
It is another object of the present invention to provide a generally improved data recording system.
In accordance with the present invention, in a data recording system for recording in a recording medium a data file containing data including compressed audio data and compressed video data, and an index file containing index data for searching the data of the data file, the data contained in the data file have a hierarchical format, and the index file has a hierarchical format associated with that of the data file.
The index file contains addresses on the basis of at least a minimum access unit of data.

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