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1. JP2019215952 - 光情報記録媒体

官庁
日本
出願番号 2019174735
出願日 25.09.2019
公開番号 2019215952
公開日 19.12.2019
特許番号 6756023
特許付与日 28.08.2020
公報種別 B2
IPC
G11B 7/2408
G11B 7/007
G物理学
11情報記憶
B記録担体と変換器との間の相対運動に基づいた情報記録
7光学的手段による記録または再生,例.光ビームの照射による記録,低パワー光ビームを用いる再生;そのための記録担体
007記録担体上の情報の配列,例.トラックの形状
G11B 20/10
G物理学
11情報記憶
B記録担体と変換器との間の相対運動に基づいた情報記録
20記録または再生方法に特徴のない信号処理;そのための回路
10デジタル記録または再生
G11B 20/12
G物理学
11情報記憶
B記録担体と変換器との間の相対運動に基づいた情報記録
20記録または再生方法に特徴のない信号処理;そのための回路
10デジタル記録または再生
12フォーマット,例.記録担体上のデータブロックまたはワードの配列
CPC
G11B 7/24065
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor
24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
2403Layers; Shape, structure or physical properties thereof
24065Layers assisting in recording or reproduction below the optical diffraction limit, e.g. non-linear optical layers or structures
G11B 7/0079
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor
007Arrangement of the information on the record carrier, e.g. form of tracks ; , actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
0079Zoned 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
G11B 7/24085
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor
24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
2407Tracks or pits; Shape, structure or physical properties thereof
24085Pits
G11B 7/005
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor
004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
005Reproducing
G11B 7/007
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor
007Arrangement of the information on the record carrier, e.g. form of tracks ; , actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
G11B 7/00745
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor
007Arrangement of the information on the record carrier, e.g. form of tracks ; , actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
00745Sectoring or header formats within a track
出願人 シャープ株式会社
メモリーテック・ホールディングス株式会社
発明者 中 峻之
山田 博久
山本 真樹
田島 秀春
小西 正人
代理人 特許業務法人HARAKENZO WORLD PATENT & TRADEMARK
優先権情報 2013120958 07.06.2013 JP
発明の名称
(JA) 光情報記録媒体
要約
(JA)

【課題】情報の再生品質を向上させる。
【解決手段】第1ピット列の最長ピット(P1max)、または、最長スペース(S1max)から得られる反射光量から算出される反射率を第1反射率、第2ピット列の最長ピット(P2max)、または、最長スペース(S2max)から得られる反射光量から算出される反射率を第2反射率とした場合、第1ピット列は、第1反射率が第2反射率と略同一となるように形成されている。
【選択図】図6