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1. WO2007036827 - OPTICAL STORAGE DISK AND SYSTEM COMPRISING A DISK WITH NON-UNIFORMLY SPACED TRACKS

Publication Number WO/2007/036827
Publication Date 05.04.2007
International Application No. PCT/IB2006/053254
International Filing Date 13.09.2006
IPC
G11B 7/007 2006.01
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 7/085 2006.01
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
08Disposition or mounting of heads or light sources relatively to record carriers
085with provision for moving the light beam into, or out of, its operative position.
G11B 7/09 2006.01
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
08Disposition or mounting of heads or light sources relatively to record carriers
09with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
CPC
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 7/24082
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
24082Meandering
Applicants
  • KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL]/[NL] (AllExceptUS)
  • YIN, Bin [CN]/[NL] (UsOnly)
Inventors
  • YIN, Bin
Agents
  • UITTENBOGAARD, Frank
Priority Data
05109104.930.09.2005EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL STORAGE DISK AND SYSTEM COMPRISING A DISK WITH NON-UNIFORMLY SPACED TRACKS
(FR) DISQUE DE STOCKAGE OPTIQUE ET SYSTEME COMPORTANT UN DISQUE POURVU DE PISTES A ESPACEMENT NON UNIFORME
Abstract
(EN)
The present invention relates to an optical storage disk for both read-only and (re-)writable applications comprising a plurality of adjacent track portions with a radial track pattern in which a number of n ≥ 2 adjacent track portions repeatedly exhibit non-uniform radial track distances TP1 ≠ TP2... ≠ TPn . The present invention further relates to an optical storage system comprising such a disk and an optical disk drive for it. The drive comprises a beam generator arranged to project a plurality of (n) satellite light spots (S1, ... , Sn; SL, SM) and one main spot (SR) onto said optical disk. In the system, the sum of the non-uniform radial track distances TPΣ = TP1 + ... + TPn is higher than the reciprocal optical cutoff &lgr; /(2NA) of the beam.
(FR)
Disque de stockage optique pour des applications à la fois en lecture seule et (ré)inscriptibles, qui comporte une pluralité de parties de pistes adjacentes présentant un motif de pistes radial dans lequel un nombre n = 2 de parties de pistes adjacentes présente de manière répétée des distances radiales non uniformes entre pistes (TP1 ? TP2... ? TPn). La présente invention concerne en outre un système de stockage optique comportant un disque de ce type et une unité de disque optique pour ledit système. Ladite unité comporte un générateur de faisceau conçu pour projeter une pluralité de (n) taches de lumière satellites (S1, ..., Sn; SL, SM) et une tache principale (SR) sur ce disque optique. Dans ce système, la somme des distances radiales non uniformes entre pistes (TPS = TP1 + ... + TPn) est supérieure à la coupure optique réciproque ?/(2NA) du faisceau.
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