Combination optical media, device and method for accessing the combination optical media

An optical medium and medium technology, applied in the direction of recording/reproducing by optical methods, optical record carriers, record carriers used by machines, etc., can solve the problems of long startup time and uncertain startup of optical drives, etc.

Active Publication Date: 2010-02-24
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The object of the present invention is to solve the problem of long start-up times of current and future optical drives and to solve the problem of indeterminate start-up when a combined format disc, for example a disc having both a CD information layer and a DVD information layer, is loaded into the drive The problem

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  • Combination optical media, device and method for accessing the combination optical media
  • Combination optical media, device and method for accessing the combination optical media
  • Combination optical media, device and method for accessing the combination optical media

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[0034] The following description focuses on embodiments of the invention applicable to combination optical media, particularly combination optical discs. However, it should be clear that the invention is not limited to this application, but can be applied to many other optical media including, for example, a Minidisc comprising both an MO recording layer and a compact disc with pre-recorded information. flower layers.

[0035] As mentioned above, it is desirable if the identification of the disc type can be done as quickly and as completely as possible.

[0036] in accordance with Figure 1A and 1BIn an embodiment of the invention, an electronic memory chip 4 is integrated into the combination optical disc 1 . The chip 4 contains a memory on which information relating to the format type of the layers 10, 11 on the disc 1 is stored. RF radiation is preferably used for reading out the information from the chip 4, wherein the energy for the information transfer from the chip i...

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Abstract

A combination optical disc (1) is disclosed, which contains at least two information layers (10, 11) of at least two different storage formats selected from for example CD, DVD, BD. Information is stored on the disc (1) concerning the storage format of the layers (10, 11). According to an embodiment of the invention, each of the formats contains information indicating that a second, or even third,format is present on the same disc. Now a device may select a format different from the one detected during start up. Alternatively, all formats present on a single disc are identified by an identifier on the disc. Such art identifier may be located in the BCA area, a chip (4) on disc or in a bar code on the disc itself.

Description

technical field [0001] The present invention is generally in the field of optical storage media. In particular the invention relates to combined optical media, ie optical media comprising at least two information layers in at least two different formats, and corresponding systems and methods for accessing such combined optical media. Background technique [0002] In the field of optical recording, generations of optical discs succeed each other according to physical parameters such as wavelength and NA of the objective lens. In the 12cm realm, first it was CD, then DVD, now Blu-ray Disc (BD) and / or HD-DVD and / or other versions like EVD proposed by China. [0003] A large number of disc-shaped optical storage media combining different formats on different layers has been developed and is known in the prior art. [0004] The DVD Forum has approved, for example, a combined disc format combining DVD-ROM on one side and DVD-RAM on the other. These discs are double-sided and re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/007G11B19/12G06K19/04
CPCG11B7/00736G11B19/122G06K19/04G11B7/24041G11B19/12
Inventor J·希姆斯柯克
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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