EP 2005428 A2 20081224 - A METHOD AND APPARATUS FOR CONTROLLING LASER POWER FOR A PLURALITY OF LASER BEAMS
Title (en)
A METHOD AND APPARATUS FOR CONTROLLING LASER POWER FOR A PLURALITY OF LASER BEAMS
Title (de)
VERFAHREN UND VORRICHTUNG ZUR STEUERUNG DER LASERLEISTUNG FÜR MEHRERE LASERSTRAHLEN
Title (fr)
PROCEDE ET DISPOSITIF DE COMMANDE DE LA PUISSANCE LASER POUR UNE PLURALITE DE FAISCEAUX LASER
Publication
Application
Priority
- IB 2007050981 W 20070321
- CN 200610071858 A 20060330
Abstract (en)
[origin: WO2007113715A2] A method of controlling laser power for a plurality of laser beams, the method comprising the steps of: - successively switching on (710) the writing of each laser beam at different starts of segment for writing data, - successively switching off (720) the writing of each laser beam that arrives at the start of a segment previously written by another laser beam, - detecting (730) only one laser beam that has kept on writing, - calibrating (732) laser power of the only one laser beam, - switching off (750) the writing of said only one laser beam, and - shifting (760) all laser beams.
IPC 8 full level
G11B 7/0045 (2006.01); G11B 7/125 (2006.01); G11B 7/14 (2006.01)
CPC (source: EP KR)
G11B 7/1263 (2013.01 - KR); G11B 7/1267 (2013.01 - EP); G11B 7/127 (2013.01 - EP); G11B 7/14 (2013.01 - EP KR)
Citation (search report)
See references of WO 2007113715A2
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 MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007113715 A2 20071011; WO 2007113715 A3 20071206; EP 2005428 A2 20081224; JP 2009531800 A 20090903; KR 20090005086 A 20090112; RU 2008142953 A 20100510; TW 200739566 A 20071016
DOCDB simple family (application)
IB 2007050981 W 20070321; EP 07735201 A 20070321; JP 2009502282 A 20070321; KR 20087026320 A 20081028; RU 2008142953 A 20070321; TW 95113185 A 20060413