The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 16, 2016
Filed:
Feb. 19, 2014
Applicant:
Toshiba Samsung Storage Technology Korea Corporation, Suwon-si, KR;
Inventors:
Jung-bae Oh, Suwon-si, KR;
Il-boon Ko, Suwon-si, KR;
Ki-bok Kim, Suwon-si, KR;
Hyun-wook Nam, Suwon-si, KR;
Eun-goo Kim, Suwon-si, KR;
Assignee:
Toshiba Samsung Storage Technology Korea Corporation, Suwon-si, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 7/1353 (2012.01); G11B 7/1275 (2012.01); G11B 7/22 (2006.01);
U.S. Cl.
CPC ...
G11B 7/1275 (2013.01); G11B 7/22 (2013.01); Y10T 29/49021 (2015.01);
Abstract
Provided is an optical pickup device and a method of aligning a twin-light source in an optical disc drive. The method operates two light emitting chips in the light source simultaneously to cause two laser beams to be transmitted through a grating element at the same time. Location errors and rotation errors of the two light emitting chips with respect to the grating element may be corrected while monitoring the laser beams transmitted through the grating element.