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:
Mar. 21, 2000
Filed:
Sep. 16, 1997
Applicant:
Inventors:
Jin-hwan Kim, Kyonggi-do, KR;
Min-ho Jang, Kyonggi-do, KR;
Assignee:
Samsung Electronics Co., Ltd., Kyungki-do, KR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G02B / ;
U.S. Cl.
CPC ...
369 4424 ; 369 4427 ; 369120 ; 359 15 ;
Abstract
An optical pickup capable of use with disks each having a different thickness, including two optical modules each having a light source having a different wavelength, and a photodetector for receiving reflected light. The optical pickup selects a proper light source out of two light sources each having a different wavelength, according to the type of disk and the information which is to be reproduced, and records/reproduces information stored in the disk under optimum conditions according to the thickness of the disk.