Information recording medium, information recording method, information recording device, information playback method, and information playback device

Patent metadata

Field	Value
Publication number	US-2016343394-A1
Application number	US-201615153101-A
Country	US
Kind code	A1
Filing date	May 12, 2016
Priority date	May 18, 2015
Publication date	Nov 24, 2016
Grant date	—

Abstract

A write-once type information recording medium according to one aspect of the present disclosure includes at least one recording layer. In the information recording medium, the at least one recording layer has a spiral shape in which a land track and a groove track are alternately arranged as a recording track, the recording track is divided into blocks each of which being minimum unit in which recording is performed, and the information recording medium includes a management information area where management information is recorded and a user data area where user data is recorded. Each of the management information areas of both the land track and the groove track on each recording layer of the at least one recording layer is disposed at a same distance from the center of the information recording medium.

First claim

What is claimed is:

1 . A write-once type information recording medium comprising at least one recording layer,
wherein the at least one recording layer has a spiral shape in which a land track and a groove track are alternately arranged as a recording track, the recording track is divided into blocks each of which being a minimum unit in which recording is performed, the information recording medium includes a management information area where management information is recorded and a user data area where user data is recorded, and each of the management information areas of both the land track and the groove track on each recording layer of the at least one recording layer is disposed at a same distance from the center of the information recording medium.

2 . The information recording medium according to claim 1 , wherein the management information areas are sequentially used from the management information area on a recording layer which is farthest from a surface of the information recording medium toward the management information area on a recording layer which is closest to the surface, and
the management information areas on each recording layer of the at least one recording layer are used from the groove track to the land track or from the land track to the groove track.

3 . The information recording medium according to claim 2 , wherein the management information area on a recording layer is usable, remaining an usable block of the management information area on another recording layer not used.

4 . The information recording medium according to claim 2 , wherein the management information area includes a temporary management information area where the management information is temporarily recorded and a confirmed management information area where the management information is confirmedly recorded, and
in the at least one recording layer, the confirmed management information area is disposed at a predetermined position in the management information area of the recording track used later in one of the land track and the groove track.

5 . The information recording medium according to claim 4 , wherein, during finalize processing in which additional recording is prohibited, the latest management information is recorded in the confirmed management information area of the management information area closest to the surface of the recording medium.

6 . The information recording medium according to claim 1 , wherein the management information includes a recording prohibition state flag indicating whether finalize processing has been performed, and
during the finalize processing, the recording prohibition state flag is recorded so as to indicate that the finalize processing has been performed.

7 . An information recording method for recording information on a write-once type information recording medium including at least one recording layer,
wherein the at least one recording layer has a spiral shape in which a land track and a groove track are alternately arranged as a recording track, the recording track being divided into blocks each of which being a minimum unit in which recording is performed, the information recording medium includes a management information area where management information is recorded and a user data area where user data is recorded, each of the management information areas of both the land track and the groove track on each recording layer of the at least one recording layer is disposed at a same distance from the center of the information recording medium, and the at least one recording layer is sequentially used from a position farthest from a surface of the information recording medium toward a position closest to the surface of the information recording medium.

8 . The information recording method according to claim 7 , wherein the management information area includes a temporary management information area where the management information is temporarily recorded and a confirmed management information area where the management information is confirmedly recorded,
in the at least one recording layer, the confirmed management information area is disposed at a predetermined position in the management information area of the recording track used later in one of the land track and the groove track, and in each recording layer of the at least one recording layer, the latest management information is recorded in the confirmed management information area after being recorded in the temporary management information area.

9 . The information recording method according to claim 8 , wherein, in performing finalize processing in which additional recording is prohibited, the latest management information is recorded in the confirmed management information area of the management information area closest to the surface of the recording medium.

10 . The information recording method according to claim 7 , wherein the management information includes a recording prohibition state flag indicating whether finalize processing has been performed, and
in performing the finalize processing, the recording prohibition state flag is recorded so as to indicate that the finalize processing has been performed.

11 . An information recording device that records information on a write-once type information recording medium including at least one recording layer,
the at least one recording layer of the information recording medium having a spiral shape in which a land track and a groove track are alternately arranged as a recording track, the recording track being divided into blocks each of which being a minimum unit in which recording is performed, the information recording medium including a management information area where management information is recorded and a user data area where user data is recorded, each of the management information areas of both the land track and the groove track on each recording layer of the at least one recording layer is disposed at a same distance from the center of the information, the information recording device comprising: an optical pickup that irradiates the information recording medium with a laser beam; a mechanical controller that controls the optical pickup; and a recording part that controls the recording of the management information and the user data, wherein the recording part controls the recording of the management information in the management information area such that the recording is sequentially performed from a position farthest from a surface of the information recording medium toward a position closest to the surface of the information recording medium with respect to the at least one recording layer.

12 . The information recording device according to claim 11 , wherein the management information area includes a temporary management information area where the management information is temporarily recorded and a confirmed management information area where the management information is confirmedly recorded,
in the at least one recording layer, the confirmed management information area is disposed at a predetermined position in the management information area of the recording track used later in one of the land track and the groove track, and in the at least one recording layer, the recording part performs control such that the latest management information is recorded in the confirmed management information area after being recorded in the temporary management information area.

13 . The information recording device according to claim 12 , wherein, in performing finalize processing in which additional recording is prohibited, on the information recording medi

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Takahashi Yoshihisa
• Kato Hisae
• Ito Motoshi

Classifications

• G11B7/00745

  Sectoring or header formats within a track (formats in general G11B20/12) · CPC title

• G11B7/0079 Primary

  Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity [ZCLV], Zone Constant Angular Velocity [ZCAV], carriers with RAM and ROM areas · CPC title

• G11B2220/235

  Multilayer discs, i.e. multiple recording layers accessed from the same side · CPC title

• G11B2220/218

  Write-once discs · CPC title

• G11B7/00718

  Groove and land recording, i.e. user data recorded both in the grooves and on the lands · CPC title