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Optical disc and optical disc apparatus

An optical disc, optical disc recording technology, applied in the direction of optical recording system, optical recording/reproduction, optical recording/reproduction/erasing method, etc., can solve the problems of destroying BD interchangeability, unsatisfactory, etc.

Inactive Publication Date: 2011-03-23
HITACHI-LG DATA STORAGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, as mentioned above, the number of parameters of the recording strategy is assumed to be increased to at least 2 times less than the existing ones. In the DI unit composed of 112 bytes, it is impossible to record the recording strategy information with the increased number of parameters. The problem
[0012] On the other hand, configuring the DI unit with a size larger than 112 bytes is not ideal because compatibility with existing BDs is broken.

Method used

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  • Optical disc and optical disc apparatus
  • Optical disc and optical disc apparatus
  • Optical disc and optical disc apparatus

Examples

Experimental program
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Effect test

Embodiment 1

[0062] A method of recording recording strategy information on an optical disc as an embodiment of the present invention will be described with reference to the drawings.

[0063] figure 2 This is an example of the optical disc structure of this embodiment.

[0064] It has three recordable information recording layers, which are called layer 0, layer 1, and layer 2, respectively. Layer 0 and layer 2 perform recording and reproduction from the inner periphery to the outer periphery, and layer 1 performs recording and reproduction from the outer periphery to the inner periphery.

[0065] A lead-in area is set in the inner peripheral area of ​​layer 0 as a management area, and a lead-out area is set in the outer peripheral area of ​​layer 2 as a management area.

[0066] The lead-in area is divided into an emboss area on the inner side and a recordable area on the outer side, and the emboss area is further composed of a protection area and a PIC (permanent information and cont...

Embodiment 2

[0091] Figure 6 This is an example of the DI unit in the management area of ​​the optical disc in this embodiment.

[0092] Figure 16 is an example of the format of the first physical disk information in Embodiment 2, Figure 17 This is an example of the format of the second physical disk information in the second embodiment, and the recording strategy type is n-1 strategy.

[0093] Different from Embodiment 1, in this embodiment, a DI unit whose connection flag is on indicates that residual disk information exists in DI units of other clusters. The connection flag of DI0 of cluster number 0 is turned on (on) for recording. Like the first embodiment, the first physical disk information is recorded in DI0, and the second physical disk information is recorded in the main body of DI32 of cluster number 1.

[0094] Since the number of DI units per cluster is 32, the maximum number of logical disk information that can be recorded in Embodiment 1 is 16, but it can be increased ...

Embodiment 3

[0097] Figure 7 It is an example of the data structure of the disc information in the third embodiment, and shows the correspondence between the logical disc information and the physical disc information.

[0098] The difference from the first embodiment is the content of the recording strategy information recorded in the first and second physical disk information. In the first embodiment, the binary division was simply performed, but in the present embodiment, the classification related to the mark length or the gap length in the reference table is duplexed.

[0099] by Figure 5 Take the classification related to the pre-gap length of the parameter of the start pulse position (dTtop) of the recording strategy as an example to illustrate the duplication of classification.

[0100] First, as the first classification, it is classified into 2T space (space) and 3T space or more. About 3T clearance above, Figure 5 There are three parameters above 3T, 4T, and 5T, and among t...

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Abstract

The present invention relates to an optical disc and an optical disc apparatus. The invention provides a method for recording the write strategy information, the number of parameters of which is increased, as the disc information, while maintaining the structure of a disc information region or area on the conventional optical disc, i.e., the compatibility therewith. Also, it is to provide a next generation type optical disc and an optical disc apparatus, being superior in the compatibility with the conventional optical disc apparatus, in particular, in relation to the handling of the write strategy information. The write strategy information is separated into many parts; a part of the parameter is recorded in the first physical disc information of same size with the prior disc and the residual parameter is recorder in the second physical disc information of same size with the prior disc is and the disc obtains the recording strategy information according to the first, second physical information.

Description

technical field [0001] The present invention relates to an optical disc, in particular to a method for recording recording strategy information in the disc information area of ​​a recordable optical disc. Background technique [0002] In Patent Document 1, regarding the method of recording recording strategy information in the disc information area of ​​a recordable optical disc, it is described that "in BD-RE / WO, "1 cluster" represents the minimum recording unit, and 544 clusters are aggregated. Consists of 1 segment as 1 upper recording unit, and a total of 5 segments are collected to form a PIC area. Disc information is recorded in the first cluster of the first segment IF0. Disc information records a plurality of allowable discs according to the corresponding disc. Writing double-speed and recording layers, 1 disc information consists of 112 bytes. Specifically, disc information composed of 112 bytes is called a disc information (DI) frame.". [0003] In addition, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/004
CPCG11B2007/0013G11B7/0037G11B20/1252G11B7/00456G11B2220/2541G11B2020/1265G11B7/00736
Inventor 藤田真治安川贵清赤星健司西村孝一郎
Owner HITACHI-LG DATA STORAGE
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