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1. JP2019145198 - 光情報記録媒体、及び再生方法

パーマリンク
官庁
日本
出願番号 2019105321
出願日 05.06.2019
公開番号 2019145198
公開日 29.08.2019
特許番号 6595140
特許付与日 04.10.2019
公報種別 B2
IPC
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 7/2408
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 SHARP CORP
シャープ株式会社
MEMORY-TECH HOLDINGS INC
メモリーテック・ホールディングス株式会社
発明者 NAKA SHINYUKI
中　峻之
YAMADA HIROHISA
山田　博久
YAMAMOTO MAKI
山本　真樹
TAJIMA HIDEHARU
田島　秀春
KONISHI MASATO
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
(EN) OPTICAL INFORMATION RECORDING MEDIUM AND REPRODUCTION METHOD
(JA) 光情報記録媒体、及び再生方法
要約
(EN)

PROBLEM TO BE SOLVED: To improve reproduction quality of information.

SOLUTION: In a case where a reflectance calculated from a reflected light amount obtained from a longest pit (P1max) or a longest space (S1max) in a first pit row is defined as a first reflectance and a reflectance calculated from a reflected light amount obtained from a longest pit (P2max) or a longest space (S2max) in a second pit row is defined as a second reflectance, the first pit row is formed such that the first reflectance becomes substantially identical with the second reflectance.

SELECTED DRAWING: Figure 6

COPYRIGHT: (C)2019,JPO&INPIT


(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
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