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. 28, 2010
Filed:
Aug. 27, 2009
Jae-cheol Bae, Suwon-si, KR;
In-joo Kim, Suwon-si, KR;
Young-jae Park, Yongin-si, KR;
Taek-seong Jeong, Suwon-si, KR;
Jae-cheol Bae, Suwon-si, KR;
In-joo Kim, Suwon-si, KR;
Young-jae Park, Yongin-si, KR;
Taek-seong Jeong, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An apparatus for recording/reproducing holographic data and a method of adjusting a position of a recording layer. While an objective lens focusing first and second lights having different wavelengths on a holographic data storage medium including first and second reflective layers reciprocatingly moves in a direction of an optical axis, a focus movement unit, which moves a focus of the second light in the direction of the optical axis until a time difference between a first detection signal generated when the first light is reflected from the first reflective layer and a second detection signal generated when the second light is reflected from the second reflective layer becomes a value corresponding to a position of a desired recording layer, is controlled to move a focal position of the second light so that the focal position of the second light can be adjusted to the position of a desired recording layer.