EP 1994532 A2 20081126 - OPTICAL PICK-UP METHOD AND DEVICE FOR MULTILAYER RECORDING MEDIUM
Title (en)
OPTICAL PICK-UP METHOD AND DEVICE FOR MULTILAYER RECORDING MEDIUM
Title (de)
OPTISCHES PICKUP-VERFAHREN UND EINRICHTUNG FÜR EIN MEHRSCHICHTIGES AUFZEICHNUNGSMEDIUM
Title (fr)
PROCÉDÉ ET APPAREIL DE LECTURE OPTIQUE POUR SUPPORT D'ENREGISTREMENT MULTICOUCHE
Publication
Application
Priority
IB 2005003628 W 20051204
Abstract (en)
[origin: WO2007063353A2] An optical pick-up method and device for multilayer recording medium using a source of reading radiation, a detector of reflected signal, an optical system for focusing the reading radiation into information layer and said detector of reflected signal, an arrangement for focusing and tracking control and means for suppression interference of layers reflected signals.
IPC 8 full level
G11B 7/00 (2006.01); G11B 7/125 (2006.01); G11B 7/135 (2012.01)
CPC (source: EP)
G11B 7/126 (2013.01); G11B 7/127 (2013.01); G11B 7/1275 (2013.01); G11B 7/13927 (2013.01); G11B 7/08511 (2013.01); G11B 7/0948 (2013.01); G11B 7/0956 (2013.01); G11B 2007/0013 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
WO 2007063353 A2 20070607; WO 2007063353 A3 20090416; EP 1994532 A2 20081126; EP 1994532 A4 20091111; TW 200847156 A 20081201
DOCDB simple family (application)
IB 2005003628 W 20051204; EP 05857344 A 20051204; TW 96119058 A 20070528