Optical information recording medium and reproducing apparatus

A technology for recording media and optical information, which is applied in the directions of recording/reproducing, data recording, and information arrangement by optical methods, and can solve the problems of reducing the area of ​​recording user data, difficult to swing, and reducing the recording capacity.

Inactive Publication Date: 2013-12-18
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with recording pre-format pits is that the area for recording user data is reduced and thus the recording capacity is reduced
However, the wobble is information of different groove tracks, and in a state where the wobble is out of phase, it is difficult to reproduce the wobble

Method used

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  • Optical information recording medium and reproducing apparatus
  • Optical information recording medium and reproducing apparatus
  • Optical information recording medium and reproducing apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0036] 2. First Embodiment: Optical Information Recording Medium

no. 2 approach

[0037] 3. Second Embodiment: Address Recording Device

no. 3 approach

[0038] 4. Third Embodiment: Disc Playback Device

[0039] 1. BD format

[0040] In the present technology, the format of address information and the like follows the BD (Blu-ray Disc (registered trademark)) format. According to this, a larger part of BD technology, which is a high-density optical disc and is practically applied, can be used. Therefore, before starting to describe the present invention, address information in the BD format will be described.

[0041] like figure 1 As shown in , the main data to be written is a series of RUBs (Recording Unit Blocks) (RUB n+0 、RUB n+1 、RUB n+2 、RUB n+3 ,...). The RUB is a unit for recording main data (record reproduction data), and for example, a predetermined length is set to 64 kilobytes. Three ADIP (Address in Groove) words ADIP0, ADIP1, and ADIP2 are assigned to each RUB. ADIP0, ADIP1, and ADIP2 have the same address information as each other.

[0042] Also, 83 (unit numbers, 0 to 82) ADIP units are included in one AD...

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PUM

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Abstract

An optical information recording medium on which recording address information is performed by a CAV or a zone CAV system, wherein a groove wobbling continuously is formed in advance to record the information to the groove and a land abutting the groove, the address information is recorded by a wobble where a plurality of modulated waves modulated by the address information are multiply formed, the modulated wave is a higher harmonic wave whose frequency is a fundamental wave of the fundamental frequency of the wobble, or an integer times the fundamental frequency of the wobble, one modulated wave is modulated by the address information of one land of the abutting lands which interpose the groove, and the other modulated wave is modulated by the address information of the other land of the abutting lands which interpose the groove.

Description

technical field [0001] The present technology relates to an optical information recording medium and a reproduction device. Background technique [0002] In the past, optical discs in which information was recorded or reproduced with laser beams were actually used. There are read-only, write-once, and rewritable types of optical discs. For the write-once type and the rewritable type, it is necessary to record address information indicating the position of the optical disc in advance for recording information. [0003] There are two methods of recording address information. One method is to record address information using pre-formatted pits. Another method is to form a signal of a ditch modulated by address information, which is called a wobbled ditch. A problem with recording pre-format pits is that the area for recording user data is reduced, and thus the recording capacity is reduced. The swing method has the advantage that this problem does not occur. Also, a trenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/1245G11B7/24085
CPCG11B27/24G11B7/24082G11B2007/00754G11B7/00718
Inventor 堀笼俊宏东野哲安藤秀树
Owner SONY CORP
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