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:
Sep. 22, 2015
Filed:
Feb. 24, 2014
Toshiba Samsung Storage Technology Korea Corporation, Suwon-si, KR;
Ki-bok Kim, Suwon-si, KR;
Jin-ho Jeong, Seoul, KR;
Eun-goo Kim, Suwon-si, KR;
Jung-bae Oh, Suwon-si, KR;
Seung-man Han, Suwon-si, KR;
Toshiba Samsung Storage Technology Korea Corporation, Suwon-si, KR;
Abstract
Provided are an optical pickup and an optical information storage system including the same. The optical pickup includes a photodetector that receives a main light beam and a plurality of sub-light beams reflected from an information storage medium and diffracted by a diffracting element. The photo detector detects a tracking error signal using zeroth-order light as the main light beam and using one of first-order light and third-order light as the sub-light beam based on a type of an optical information storage medium.