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Recording medium having a data structure for backing up management files and recording and reproducing methods and apparatuses

a recording medium and data structure technology, applied in the field of high density recording media, can solve the problems of difficulty in developing a complete optical reproducing apparatus and incomplete blu-ray disc standards

Inactive Publication Date: 2005-08-11
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Blu-ray Disc (BD) standards are not complete yet, and there has been difficulty in developing a complete optical reproducing apparatus.
However, in the present Blu-ray Disc (BD) standards, because consolidated standards for constructing and using the file information are not complete yet, there are many restrictions on the development of a Blu-ray Disc (BD) optical reproducing apparatus.

Method used

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  • Recording medium having a data structure for backing up management files and recording and reproducing methods and apparatuses
  • Recording medium having a data structure for backing up management files and recording and reproducing methods and apparatuses
  • Recording medium having a data structure for backing up management files and recording and reproducing methods and apparatuses

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first embodiment

[0047]FIG. 3 illustrates a file or data structure of the back-up files according to the present invention. As shown, in this embodiment, each back-up file, which is a copy of the corresponding management file, is stored in the same directory as the corresponding management file. In relation to this, “_bup” has been added to the extension of an existing management file name to provide the corresponding back-up file name. For example, the back-up file of the index file “index.bdmv” is “index.bdmv_bup”. However, this naming convention is but one example, and other naming conventions will be readily apparent.

[0048] As mention above, the back-up file is formed in a directory having the respective management file positioned therein, without forming a separate directory for the back-up file. Therefore, the index file index.bdmv and the object file MovieObject.bdmv are management files in the BDMV directory, and the “index.bdmv_bup” and the MovieObject.bdmv_bup” back-up files are formed in ...

second embodiment

[0051]FIG. 4 illustrates a file or data structure of the back-up files according to the present invention. As shown, back-up files of the upper management files, namely the index.bdmv and MovieObject.bdmv are formed in the same BDMV directory. The back-up files for the other management files, however, are recorded in separate, respective back-up file directories. The separate back-up file directories are a back-up playlist directory PLAYLIST_BUP and a back-up clipinfo directory CLIPINF_BUP.

[0052] That is, since the upper management files index.bdmv and MovieObject.bdmv form no separate back-up file directory, the back-up files “index.bdmv_bup” and “MovieObject.bdmv_bup” for the index file index.bdmv and the object file MovieObject.bdmv in the BDMV directory, are formed in the BDMV directory. Meanwhile, the back-up files for the playlist file *.mpls and the clipinfo file *.clpi are recorded in the separate back-up directories “PLAYLIST_BUP”, and “CLIPINF_BUP”. In relation to this, be...

third embodiment

[0054]FIG. 5 illustrates a file or data structure of the back-up files according to the present invention. The embodiment of FIG. 5 is the same as the embodiment of FIG. 4 except that a separate “BDMV_Top BUP” directory exists in the BDMV directory, and the back-up files of the index file index.bdmv and the object file MovieObject.bdmv are recorded in the BDMV_Top_BUP directory instead of directly in the BDMV directory. In relation to this, because the directory itself is appropriately identified as a back-up directory, the back-up files in the back-up directories may or may not include the “_bup” extension or other naming convention to identify the files therein as back-up files.

[0055] Therefore, according to the third embodiment of the present invention, though an optical recording and reproducing apparatus (e.g., the apparatus of FIG. 10) uses management files in an existing BDMV directory, the playlist directory PLAYLIST, and clipinfo directory CLIPINF, if one or more of the abo...

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Abstract

In the data structure for backing up management files, management files that manage reproduction of data from the recording medium are stored in a recording area as is a back-up directory. The back-up directory includes a copy of each management file as a respective back-up file.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of priority under 35 U.S.C. 119 on Korean Application No. 10-2004-0009034, filed on Feb. 11, 2004, which is hereby incorporated by reference in its entirety. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to high density recording media such as read-only blu-ray discs (BD-ROM). [0004] 2. Discussion of Related Art [0005] Optical discs are widely used as an optical recording medium. Presently, of the optical discs, a new high density optical recording medium (HD-DVD), such as the Blu-ray Disc (hereafter called as “BD”), for recording and storing a large amount of high definition video and audio data is under development. [0006] Currently, global standard technical specifications of the Blu-ray Disc (BD), a next generation HD-DVD technology, are being established as a next generation optical recording solution that can store amounts of data significantly...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G11B27/034G11B7/0045G11B27/32H04N5/85H04N5/90H04N9/804H04N9/82
CPCG11B20/0092G11B27/034H04N9/8205H04N5/85H04N9/8042G11B27/329B27C3/02B27G15/02
Inventor KIM, BYUNG JINSEO, KANG SOOPARK, SUNG WAN
Owner LG ELECTRONICS INC
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