Title:
OPTICAL INFORMATION RECORDING/REPRODUCTION DEVICE, RECORDING CONDITION ADJUSTMENT METHOD, AND OPTICAL INFORMATION RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2013/175525
Kind Code:
A1
Abstract:
The present invention provides an optical information recording/reproduction device for appropriately adjusting recording conditions and a method and medium therefor in order to solve the problem in which the signal to noise ratio (SNR) during reproduction declines due to variations in the environment during recording, variations in components such as a laser output, and variations in the production of the device unless the conditions during recording are adjusted in an optical information recording/reproduction device using a holograph. An optical information recording/reproduction device for recording or reproducing information on an optical information recording medium by using a holograph adjusts the recording conditions before recording user data in an adjustment region on the optical information recording medium disposed for the purpose of adjusting the recording conditions.
Inventors:
HOSAKA MAKOTO (JP)
YAMAZAKI KAZUYOSHI (JP)
YAMAZAKI KAZUYOSHI (JP)
Application Number:
PCT/JP2012/003352
Publication Date:
November 28, 2013
Filing Date:
May 23, 2012
Export Citation:
Assignee:
HITACHI CONSUMER ELECTRONICS (JP)
HOSAKA MAKOTO (JP)
YAMAZAKI KAZUYOSHI (JP)
HOSAKA MAKOTO (JP)
YAMAZAKI KAZUYOSHI (JP)
International Classes:
G11B7/0065; G03H1/04; G11B7/0045; G11B7/1263; G11B7/1267
Foreign References:
| JP2007127799A | 2007-05-24 | |||
| JP2009043370A | 2009-02-26 | |||
| JP2008226433A | 2008-09-25 |
Other References:
TSUTOMU SHIMURA, HOLOGRAPHIC MEMORY NO SYSTEM TO ZAIRYO, 28 April 2006 (2006-04-28), pages 144 - 148
Attorney, Agent or Firm:
INOUE, Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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