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1. (WO2002005271) METHOD FOR IMPROVED READING OF A DIGITAL DATA DISC
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Latest bibliographic data on file with the International Bureau   
Pub. No.:    WO/2002/005271    International Application No.:    PCT/DK2001/000485
Publication Date: 17.01.2002 International Filing Date: 11.07.2001
Chapter 2 Demand Filed:    04.02.2002    
IPC:
G11B 7/09 (2006.01), G11B 7/095 (2006.01)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording 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
08
Disposition or mounting of heads or light sources relatively to record carriers
09
with 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
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording 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
08
Disposition or mounting of heads or light sources relatively to record carriers
09
with 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
095
specially adapted for discs, e.g. for compensation of eccentricity or wobble
Applicants: DISCCONTROL APS [DK/DK]; Snekkerstenvej 61, DK-9270 Klarup (DK) (For All Designated States Except US).
ANDERSEN, Palle [DK/DK]; (DK) (For US Only).
PEDERSEN, Tom, Søndergaard [DK/DK]; (DK) (For US Only).
STOUSTRUP, Jakob [DK/DK]; (DK) (For US Only).
VIDAL SANCHEZ, Enrique [ES/DK]; (DK) (For US Only)
Inventors: ANDERSEN, Palle; (DK).
PEDERSEN, Tom, Søndergaard; (DK).
STOUSTRUP, Jakob; (DK).
VIDAL SANCHEZ, Enrique; (DK)
Agent: PATRADE A/S; Fredens Torv 3A, DK-8000 Aarhus C (DK)
Priority Data:
PA 2000 01080 12.07.2000 DK
Title (EN) METHOD FOR IMPROVED READING OF A DIGITAL DATA DISC
(FR) PROCEDE DE LECTURE AMELIOREE D'UN DISQUE DE DONNEES NUMERIQUES
Abstract: front page image
(EN)Method for regulating the control signal for adjustment of the optical path between a data disc and a signal pick-up detector system in a data disc drive, where the control signal is regulated as a response to the deviation of the actual reading signals from expected reading signals, and wherein the control signal is regulated in dependence of the tendency of said deviation.
(FR)La présente invention concerne un procédé qui permet de réguler le signal de commande afin d'ajuster le trajet optique entre un disque de données et un système de détecteur de captation du signal dans un lecteur de disque de données, ledit signal de commande étant régulé en réponse à la déviation des signaux de lecture véritables par rapport aux signaux de lecture attendus, la régulation étant effectuée en fonction de la tendance à ladite déviation.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Org. (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (EAPO) (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (OAPI) (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)