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1. EP1656665 - A RECORDER, A DISC AND A METHOD FOR RECORDING INFORMATION ON A DISC

Office
European Patent Office
Application Number 04744782
Application Date 11.08.2004
Publication Number 1656665
Publication Date 17.05.2006
Publication Kind A2
IPC
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, reproducing using an optical beam at lower power; Record carriers therefor
007Arrangement of the information on the record carrier, e.g. form of tracks
G11B 7/24
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, reproducing using an optical beam at lower power; Record carriers therefor
24Record carriers characterised by shape, structure or physical properties, or by the selection of the material 
G11B 7/24079
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, reproducing using an optical beam at lower power; 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
24073Tracks
24079Width or depth
G11B 7/24088
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, reproducing using an optical beam at lower power; 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
24088for storing more than two values, i.e. multi-valued recording for data or prepits
CPC
G11B 7/00718
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
00718Groove and land recording, i.e. user data recorded both in the grooves and on the lands
G11B 7/24
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
G11B 7/24079
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
24073Tracks
24079Width or depth
G11B 7/24088
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
24088for storing more than two values, i.e. multi-valued recording for data or prepits
G11B 7/004
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
G11B 7/0045
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
0045Recording
Applicants KONINKL PHILIPS ELECTRONICS NV
Inventors MEINDERS ERWIN R
LANGEREIS GERARDUS R
HELLMIG JOACHIM W
Designated States
Priority Data 03102511 12.08.2003 EP
04744782 11.08.2004 EP
Title
(DE) RECORDER, DATENTRÄGER UND VERFAHREN ZUM AUFZEICHNEN VON INFORMATIONEN AUF EINEM DATENTRÄGER
(EN) A RECORDER, A DISC AND A METHOD FOR RECORDING INFORMATION ON A DISC
(FR) DISPOSITIF ET METHODE D'ENREGISTREMENT D'INFORMATIONS SUR UN DISQUE, ET DISQUE AINSI ENREGISTRE
Abstract
(EN) When recording information in tracks or in a two-dimensional pattern care must be taken not to irradiate the adjacent tracks or pits. This results in a loss of data density on the recording medium because of the track pitch or pit distance that must be observed. A reduction in track pitch is possible to the point where the focused spot of the laser also irradiates the adjacent land area and tracks or pits. This increases the achievable data density of the recording medium. By using grooves and/or by using a dye with special absorption characteristics the effect of the irradiation of the adjacent tracks or pits can be reduced, effectively only recording marks in the desired location.
(FR) Lorsque l'on enregistre des informations dans des pistes ou motifs bidimensionnels, il faut faire attention à ne pas irradier les pistes ou alvéoles adjacentes. Cela cause une perte de densité de données sur le support d'enregistrement, étant donné qu'il faut respecter une certaine distance entre les pistes ou alvéoles. Il est possible de réduire la distance entre les pistes jusqu'au point où la tache laser focalisée irradie également la zone des plages adjacentes, ou les pistes ou alvéoles adjacentes. Cela permet d'augmenter la densité possible de données sur le support d'enregistrement. On peut réduire l'effet de l'irradiation des pistes ou alvéoles adjacentes si l'on utilise des rainures et/ou un colorant ayant des propriétés spéciales d'absorption, de sorte que les marques ne soient enregistrées qu'aux emplacements voulus.
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