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Recording medium having a data structure for managing reproduction of text subtitle data recorded thereon and recording and reproducing methods and apparatuses

A recording medium and data structure technology, applied in the direction of digital recording/reproduction, data recording, recording information storage, etc., can solve the problems that effective methods for managing and reproducing graphic image data have not yet been produced

Active Publication Date: 2012-09-12
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Effective methods for managing and reproducing subtitle data and graphic image data of BD-ROMs have not yet been produced

Method used

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  • Recording medium having a data structure for managing reproduction of text subtitle data recorded thereon and recording and reproducing methods and apparatuses
  • Recording medium having a data structure for managing reproduction of text subtitle data recorded thereon and recording and reproducing methods and apparatuses
  • Recording medium having a data structure for managing reproduction of text subtitle data recorded thereon and recording and reproducing methods and apparatuses

Examples

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Embodiment Construction

[0021] In order that the present invention may be fully understood, exemplary embodiments thereof will now be described with reference to the accompanying drawings.

[0022] According to the present invention, a plurality of objects representing graphic data may be included in one page. For example up to two objects can be displayed in figure 1 in one of the pages shown. Objects representing graphic data recorded on the BD-ROM may be recorded as text subtitle data, BMP (bitmap) subtitle data, graphic image data, and the like. Each object defines an area representing graphics data.

[0023] Text subtitle data, BMP subtitle data, or graphic image data corresponding to each object is recorded as an object data segment (ODS). At least one object data segment (ODS) may be used together with a page composition segment (PCS), a color lookup table definition segment (CDS) and the end of the display settings segment (END) to figure 2 The hierarchical forms shown are managed togeth...

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Abstract

In the data structure for managing reproduction of text subtitle data, a text subtitle information area stores at least one text subtitle information segment. The text subtitle information segment is represented by a single PES packet of transport packets. In one embodiment, the text subtitle information segment includes an identifier identifying the text subtitle information segment as a text subtitle information segment.

Description

technical field [0001] The present invention relates to a high-density recording medium such as a Blu-ray Disk-ROM (BD-ROM) and related recording and reproducing methods and devices. Background technique [0002] Optical discs such as DVDs (Digital Versatile Discs) capable of storing large amounts of high-quality digital video / audio data and DVD recording / reproducing devices are now commercially available. [0003] Subtitle data such as title or logo data superimposed on DVD main video data is recorded thereon as graphic data. The optical disc reproducing device reproduces subtitle graphic data and main video data of DVD and displays the main video data and subtitle data together on an external display device connected to the optical disc reproducing device. [0004] Therefore, a user of such an optical disk reproducing apparatus can view main video data superimposed with relevant subtitle data (ie, subtitle or logo image) using a display device connected to the optical dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/12G11B20/10
CPCG11B27/105G11B2220/2541H04N9/8205H04N21/4884
Inventor 金炳振徐康洙金亨宣
Owner LG ELECTRONICS INC