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:
Jan. 30, 2001
Filed:
Sep. 28, 1998
Jae-Woo Roh, Seoul, KR;
Daewoo Electronics Co., Ltd., Seoul, KR;
Abstract
A volume holographic data storage (VHDS) system incorporates therein a storage device having a plurality of storage media for storing multiple holograms. The VHDS system comprises a light source for generating a coherent light beam, a beam splitter for splitting the coherent light beam into a reference and a signal beams, a storage device having a base and a plurality of storage media mounted on the base for three-dimensionally storing the multiple holograms thereinto, a pair of mirrors for directing the signal and the reference beams to the storage device, respectively, and a motor for rotating the storage device about an axis perpendicular to a plane which includes the signal and reference beams, wherein the axis passes through a center point of the storage device. In the storage device, each of the storage media is mounted on top of the base angularly separated by an angle of &bgr;degrees.