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Optical disk satisfying plural standards

An optical disc, standard technology, applied in the direction of optical record carrier, information arrangement, etc., can solve the problems of incompatibility with optical disc, a single optical disc cannot simultaneously hold data, and cannot meet different reproduction equipment standards at the same time, etc.

Inactive Publication Date: 2004-08-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As described above, a single optical disc cannot simultaneously accommodate two different types of data that can each be reproduced in a conventional CD reproducing device and a DVD reproducing device
[0006] Therefore, the optical disc cannot be compatiblely used for different purposes at the same time because it cannot conform to different reproduction device standards at the same time

Method used

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  • Optical disk satisfying plural standards
  • Optical disk satisfying plural standards
  • Optical disk satisfying plural standards

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Embodiment Construction

[0023] The preferred embodiments of the present invention will be described in detail below, it should be noted that the same reference numerals refer to the same elements. Also, detailed descriptions of well-known functions and constructions of the present invention are omitted in order to highlight the subject matter of the present invention.

[0024] In the description of the present invention, the CD and dual-layer DVD standards are exemplarily used as the first and second standards, respectively. In this case, the laser wavelength of the CD standard is 780 nm, and the laser wavelength of the DVD standard is between 635-680 nm, mainly 650 nm.

[0025] figure 1 It is a schematic cross-sectional view of an optical disc of a preferred embodiment of the present invention, but is not a cross-sectional view to exact scale. make figure 1 The process of the optical disc is to attach the first disc 10 for recording CD standard data on the surface of the first recording layer 14 ...

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Abstract

An optical disk includes a first recording layer for recording data reproducible only by an optical disk reproducing device using light of a wavelength based on a first standard, and a second recording layer for recording data reproducible only by an optical disk reproducing device using light of a wavelength based on a second standard different from the first standard.

Description

technical field [0001] The present invention relates to optical information recording media, in particular to multi-layer optical discs. Background technique [0002] Optical discs, which are optical information recording media, are widely used for recording and reproducing various data including audio and video data. Such optical discs include: Compact Disc (CD), Digital Video Disc (DVD), Laser Disc (LD) and Mini Disc (MD). Among them, CD is by far the most widely used main optical disc. DVDs have appeared recently. Since DVD is the same size as conventional CD, but using high-density digital compression technology, it can accommodate up to 17GB of data, enough to store a movie on one disc, and the picture quality is also higher than LD, and it allows multiple configurations at the same time. A language is used to select a language when watching a movie, so DVD is expected to be the next-generation recording medium widely used for recording and reproducing video and audi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/007G11B7/24
CPCG11B7/24G11B7/007
Inventor 高祯完
Owner SAMSUNG ELECTRONICS CO LTD