Title:
HOLOGRAM RECORDING AND/OR PLAYING DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/083944
Kind Code:
A1
Abstract:
An objective of the present invention is to provide a hologram recording and/or playing device whereby it is possible to accurately detect an angle of inclination of a holographic medium, and to carry out a correction. The hologram recording/playing device comprises a medium attitude detection unit which is configured, in at least a pair of sites, of a combination of a light source which emits a light beam upon the holographic medium and a light location detection unit which receives the light beam which is reflected by the holographic medium. The medium attitude detection means are positioned in different locations in the radius direction and/or a tangent line direction which is orthogonal to the radius direction.
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Inventors:
SUZUKI MOTOYUKI (JP)
Application Number:
PCT/JP2013/077412
Publication Date:
June 05, 2014
Filing Date:
October 09, 2013
Export Citation:
Assignee:
HITACHI CONSUMER ELECTRONICS (JP)
International Classes:
G11B7/0065; G03H1/26; G11B7/095
Domestic Patent References:
| WO2008096435A1 | 2008-08-14 |
Foreign References:
| JPH04114326A | 1992-04-15 | |||
| JPH0836772A | 1996-02-06 | |||
| JPH05234114A | 1993-09-10 | |||
| JP2005158228A | 2005-06-16 | |||
| JP2001155384A | 2001-06-08 |
Attorney, Agent or Firm:
INOUE, Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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