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Optical information recording medium and optical information recording medium playback apparatus

A technology for optical information and recording media, applied in optical recording/reproduction, optical record carrier, data recording, etc., can solve problems such as misalignment of wobble phase, reduction of user data recording area, reduction of optical disc recording capacity, etc.

Inactive Publication Date: 2014-03-26
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with recording pre-formatted partitions is that this reduces the user data recording area and thus reduces the recording capacity of the disc
Also, these wobbles represent information of different groove tracks, but the wobble phases are misaligned so it is difficult to reproduce the wobble normally

Method used

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  • Optical information recording medium and optical information recording medium playback apparatus
  • Optical information recording medium and optical information recording medium playback apparatus
  • Optical information recording medium and optical information recording medium playback apparatus

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Experimental program
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Embodiment approach

[0031] 3. Variations

[0032] 1. BD format

[0033] In this disclosure, it is assumed that the format of address information and the like conform to the BD (Blu-ray Disc (registered trademark)) format. Based on this assumption, most technologies in BD, which is a high-density optical disc already in practical use, can be used. Therefore, before describing the present disclosure, address information in the BD format will be explained.

[0034] Such as figure 1 As shown, the main data to be written are consecutive 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 is assumed to have a preset length, for example, 64 KB. Three ADIP (addressing in pregroove) addresses, that is, assign ADIP0, ADIP1 and ADIP2 to each RUB. ADIP0, ADIP1, and ADIP2 have the same address information as each other.

[0035] In addition, one ADIP word includes 83 (unit numbers 0 to 82) ADIP units. One ...

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Abstract

The invention refers to an optical information recording medium and an optical information recording medium playback apparatus. The invention discloses the optical information recording medium operated by CAV or zone CAV, wherein a groove that wobbles is formed in advance, and information is recorded in the groove and a land adjacent to the groove, an address is recorded by a wobble signal of the groove, the groove is alternately provided with a first section recording an address N by the wobble signal, and a second section recording an address (N-1) or (N+1) by the wobble signal, in two groove tracks sandwiching a land track, the first section of one of the groove tracks matches the second section of the other of the groove tracks, and an address of the groove is read from the first section, and an address of the land is read from the first and the second sections located on both sides of the land track, and recording a same address.

Description

technical background [0001] The present disclosure relates to an optical information recording medium applied to a recordable optical disc, and, for example, an optical information recording medium reproducing apparatus. [0002] Hitherto, optical discs using laser light for recording information or reproducing recorded information have been put into practical use. As for the type of optical disc, there are read-only type, write-once type, and rewritable type. In write-once type as well as rewritable type optical discs, it is necessary to record address information indicating a position on the optical disc before recording information. [0003] As for the method of recording address information, there are two popular methods. One method is to record address information as a pre-formatted partition. Another method is to modulate a signal forming a groove called a wobble by address information. A problem with recording pre-formatted partitions is that this reduces the user d...

Claims

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Application Information

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IPC IPC(8): G11B7/007G11B7/24
CPCG11B7/00718G11B7/24082G11B2007/00754
Inventor 小林昭荣
Owner SONY CORP
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