Recording methods and devices for recording information on dual layer recordable disks

A technology for recording information and recording methods, applied in the directions of recording information storage, optical recording/reproducing/erasing methods, recording signal processing, etc.

Inactive Publication Date: 2008-01-23
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For recordable dual-layer media (write-once and rewritable) that need to be read-compatible with read-only dual-layer discs, such as DVD+R discs and DVD+RW discs, the

Method used

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  • Recording methods and devices for recording information on dual layer recordable disks
  • Recording methods and devices for recording information on dual layer recordable disks
  • Recording methods and devices for recording information on dual layer recordable disks

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Embodiment Construction

[0008] Here L0 is defined to be the layer closest to the recording lens in the recording device, and thus the layer closest to the laser beam incident surface in the disc. L1 is another layer. To make this clearer, the layout of a dual-layer DVD-ROM disc according to standard ECMA-267 for a so-called OTP (Opposite Track Path) disc is depicted in FIG. 2 . As described in the standard, in the OTP type disc L0, the spiral direction of the layer L0 is opposite to that of the layer L1.

[0009] In method A, from radius R in to R out (these are 24mm and 58mm for DVD type media) The first layer L0 is written. Next, the laser spot (used to record data in the layer) jumps from layer L0 to layer L1 and writes the remainder of the data. Layer L1 is written up to a certain radius according to the amount of data to be recorded on the disc. However, in order to guarantee playback on existing DVD players (especially DVD-Video and DVD-ROM players), the remainder of layer L1 must also be ...

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Abstract

The invention relates to recording methods for recording information on a dual layer recordable disk, and to corresponding recording devices. In one such method and recording device the OPC-area is variably located on a layer of the disk. In a preferred embodiment the OPC-area is located relative close to the radius where the data stream switches from the first layer to the second layer. This reduced additional time required for jumping to a fixed OPC-area. Furthermore, in another such method and device the information to be recorded is equally divided over both layers of the dual layer disc. This avoids additional time required for finalization.

Description

technical field [0001] The present invention relates to a recording method for recording information on a dual-layer recordable disc, said method comprising the step of performing an Optimal Power Control (OPC) process to determine the actual optimum writing power, said Optimal Power Control process It is performed in the OPC area on the disk. The invention also relates to a corresponding recording device for recording information on a dual-layer recordable disc using these methods. Background technique [0002] For recordable dual-layer media (write-once and rewritable) that need to be read-compatible with read-only dual-layer discs, such as DVD+R discs and DVD+RW discs, there is a problem of how to deal with the required occupation The amount of data in the storage space of more than one layer but less than two full layers of a dual-layer disk. Contents of the invention [0003] A first recording method, method A, for recording information on such a dual-layer recordab...

Claims

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Application Information

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IPC IPC(8): G11B7/0045G11B7/007G11B7/125G11B27/034
CPCG11B7/0045G11B7/1267G11B2020/1228G11B7/00736G11B7/007G11B2007/0013G11B2220/218G11B2220/2562G11B20/1217G11B2220/235G11B27/034G11B2220/237G11B27/031G11B7/00
Inventor J·L·巴克西
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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