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1. (WO2010077540) SYSTEM AND METHOD FOR DUAL-BEAM RECORDING AND READOUT OF MULTILAYERED OPTICAL DATA STORAGE MEDIA
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/077540 International Application No.: PCT/US2009/066496
Publication Date: 08.07.2010 International Filing Date: 03.12.2009
IPC:
G11B 7/0065 (2006.01) ,G11B 7/09 (2006.01) ,G11B 7/135 (2012.01)
[IPC code unknown for G11B 7/065]
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
12
Heads, e.g. forming of the optical beam spot or modulation of the optical beam
135
Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
Applicants:
GENERAL ELECTRIC COMPANY [US/US]; 1 River Road Schenectady, NY 12345, US (AllExceptUS)
OSTROVERKHOV, Victor, Petrovich [UA/US]; US (UsOnly)
WELLES, Kenneth, Brakeley [US/US]; US (UsOnly)
LAWRENCE, Brian, Lee [US/US]; US (UsOnly)
SHI, Xiaolei [CN/US]; US (UsOnly)
REN, Zhiyuan [CN/US]; US (UsOnly)
CHEVERTON, Mark [US/US]; US (UsOnly)
KUSCH, Ruediger [DE/US]; US (UsOnly)
Inventors:
OSTROVERKHOV, Victor, Petrovich; US
WELLES, Kenneth, Brakeley; US
LAWRENCE, Brian, Lee; US
SHI, Xiaolei; US
REN, Zhiyuan; US
CHEVERTON, Mark; US
KUSCH, Ruediger; US
Agent:
DIMAURO, Peter, T.; General Electric Company Global Patent Operation P.O.Box 861, 2 Corporate Drive, Suite 648 Shelton, CT 06484, US
Priority Data:
12/347,17831.12.2008US
Title (EN) SYSTEM AND METHOD FOR DUAL-BEAM RECORDING AND READOUT OF MULTILAYERED OPTICAL DATA STORAGE MEDIA
(FR) SYSTÈME ET PROCÉDÉ D'ENREGISTREMENT ET DE LECTURE À DOUBLE FAISCEAU DE SUPPORT DE STOCKAGE DE DONNÉES OPTIQUE MULTICOUCHE
Abstract:
(EN) A system and method of operating a dual-beam detection system of a holographic data storage disc, including: impinging a data beam on a data layer of the holographic data storage disc; impinging a tracking beam on a tracking element of the holographic data storage disc; detecting a reflection of the tracking beam from the tracking element; and coordinating position of the data beam relative to the tracking beam. Embodiments compensate for the variation in vertical spacing of data and tracking beams due to the data beam being uncollimated at the objetive lens
(FR) L'invention porte sur un système et un procédé d'exploitation d'un système de détection à double faisceau d'un disque de stockage de données holographique, comprenant les opérations consistant à : amener un faisceau de données à être incident sur une couche de données du disque de stockage de données holographique ; amener un faisceau de suivi à être incident sur un élément de suivi du disque de stockage de données holographique ; détecter une réflexion du faisceau de suivi à partir de l'élément de suivi ; et asservir la position du faisceau de données par rapport au faisceau de suivi. Les modes de réalisation compensent la variation d'un espacement vertical des faisceaux de données et de suivi dû au fait que le faisceau de données est non collimaté au niveau de la lentille de focalisation.
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP2384510JP2012514282CN102272835CA2747391KR1020110108339IN4572/DELNP/2011