Title:
OPTICAL INFORMATION REPRODUCTION DEVICE AND OPTICAL INFORMATION REPRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2014/091531
Kind Code:
A1
Abstract:
Provided is an optical information reproduction device in which holography is used, wherein the multiplexing, the wavelength, and the vertical angle of the reference light can be appropriately corrected during data reproduction. Also provided is a method for performing same. An optical information reproduction device for using holography to reproduce information from an optical information recording medium, wherein reference light multiplexing and vertical angle error signals are generated from a signal detected by a light detector; the reference light multiplexing and vertical angle are adjusted using the vertical angle adjustment unit on the basis of the angle error signal; a wavelength error signal is generated from the signal detected by the light detector; and the wavelength is adjusted on the basis of the wavelength error signal.
Inventors:
HOSAKA MAKOTO (JP)
Application Number:
PCT/JP2012/081873
Publication Date:
June 19, 2014
Filing Date:
December 10, 2012
Export Citation:
Assignee:
HITACHI CONSUMER ELECTRONICS (JP)
International Classes:
G11B7/135; G11B7/0065
Domestic Patent References:
| WO2011108105A1 | 2011-09-09 | |||
| WO2011013172A1 | 2011-02-03 | |||
| WO2009044470A1 | 2009-04-09 |
Foreign References:
| JP2011238317A | 2011-11-24 | |||
| JP2006171380A | 2006-06-29 | |||
| JP2009015932A | 2009-01-22 | |||
| JP2010170616A | 2010-08-05 | |||
| JP2006268933A | 2006-10-05 |
Attorney, Agent or Firm:
INOUE, Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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