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:
Dec. 17, 2013
Filed:
Aug. 08, 2012
Applicants:
Jung-bae OH, Suwon-si, KR;
Jin-ho Jung, Seoul, KR;
Jong-hwa Yu, Yongin-si, KR;
Inventors:
Assignee:
Toshiba Samsung Storage Technology Korea Corporation, Suwon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/13 (2012.01);
U.S. Cl.
CPC ...
Abstract
Provided is a photo detecting element that has a simplified structure and that is easily manufactured and assembled, and an optical pick-up device including the photo detecting element. The photo detecting element includes an optical sensor, an amplifier for amplifying a signal from the optical sensor, and a non-linear multi-step variable resistor to adjust a gain of the amplifier.