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:
Nov. 17, 2015
Filed:
Nov. 05, 2014
Hitachi-lg Data Storage, Inc., Tokyo, JP;
Kouji Fujita, Tokyo, JP;
HITACHI-LG DATA STORAGE, INC., Tokyo, JP;
Abstract
In an optical information recording/reproducing device that radiates signal light and reference light to a recording medium, forms a hologram, and records information and emits the reference light to the hologram of the recording medium and reproduces information, a laser light source that generates the signal light and the reference light; a light angle control unit that controls an angle of the reference light incident on the recording medium; a light detecting unit that detects diffracted light when the reference light is radiated; a positioning unit that allocates an address to the recording medium and performs positioning of the recording medium for the address; a tilt measuring unit that measures a tilt of the recording medium; and a control unit that controls the incidence angle of the reference light, on the basis of a tilt measurement result in a recording mode, in a reproduction mode, are included.