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Recording medium, method and apparatus for reproducing data and method and apparatus for recording data

A technology for recording media and data, applied in the fields of digital recording/reproduction, selective content distribution, electrical components, etc., which can solve problems such as difficulty in developing optical recording/reproducing devices

Inactive Publication Date: 2008-09-17
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no method is known to efficiently record or reproduce multiple video
In addition, since there is no fully established standard for high-density recording media, it is difficult to develop a complete optical recording / reproducing device based on high-density recording media

Method used

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  • Recording medium, method and apparatus for reproducing data and method and apparatus for recording data
  • Recording medium, method and apparatus for reproducing data and method and apparatus for recording data
  • Recording medium, method and apparatus for reproducing data and method and apparatus for recording data

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Embodiment Construction

[0027] Reference will now be made in detail to the exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0028] In the following description, exemplary embodiments of the present invention will be described in conjunction with an optical disc as an exemplary recording medium. Specifically, a Blu-ray Disc (BD) is used as an exemplary recording medium for convenience of explanation. However, it can be appreciated that the technical idea of ​​the present invention is equally applicable to other recording media such as HD-DVD as it is applied to BD.

[0029] "Storage" commonly used in the embodiments is storage provided in the optical recording / reproducing apparatus (FIG. 1). The storage is an element in which the user can freely store desired information and data for subsequent use of the information and data....

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Abstract

In one embodiment, management information for managing reproduction of at least a picture-in-picture presentation path is reproduced. The management information includes luma-keying information on a luma-keying function, and the luma-keying function manages transparency of a secondary video stream. The luma-keying information indicates whether the luma-keying function is applicable to the secondary video stream when the secondary video stream is not scaled to full size. The secondary video stream represents the picture-in-picture presentation path with respect to a primary presentation path represented by a primary video stream. The primary video stream and the secondary video stream are reproduced based on the management information.

Description

technical field [0001] The present invention relates to recording and reproducing methods and apparatuses and a recording medium. Background of the invention [0002] Optical discs are widely used as recording media capable of recording large amounts of data therein. In particular, high-density optical recording media such as Blu-ray Disc (BD) and High-Definition Digital Versatile Disc (HD-DVD) have recently been developed, and they are capable of recording and storing a large amount of high-quality video data and high-quality audio data. [0003] Such a high-density optical recording medium based on next-generation recording medium technology is considered to be a next-generation optical recording scheme capable of storing far more data than conventional DVDs. The development of high-density optical recording media and other digital facilities is ongoing. In addition, an optical recording / reproducing apparatus to which the high-density recording medium standard is applied...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B20/10
CPCH04N21/4325H04N21/4431H04N21/4438H04N21/4858
Inventor 金建石
Owner LG ELECTRONICS INC
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