Title:
OPTICAL RECORDING DEVICE, LIGHTGUIDE PLATE, AND OPTICAL RECORDING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/012551
Kind Code:
A1
Abstract:
The present invention achieves high-speed recording while reducing the cost of a device relating to optical recording and reading. Provided is an optical recording device that records the interference pattern between signal light and reference light on an optical recording medium as a hologram in an angular multiplexing scheme using holography, said optical recording device including a position control unit capable of changing the mutual positional relationship between an optical recording device and an optical recording medium when recording the interference pattern. The position control unit changes the mutual positional relationship between the optical recording device and the optical recording medium to thereby record adjacent data with the phase difference created therebetween.
Inventors:
NEO ATSUSHI (JP)
UTSUGI TAKERU (JP)
ISHII TOSHIKI (JP)
UTSUGI TAKERU (JP)
ISHII TOSHIKI (JP)
Application Number:
PCT/JP2018/025992
Publication Date:
January 16, 2020
Filing Date:
July 10, 2018
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
G11B7/0065; G11B7/0045; G11B7/135
Domestic Patent References:
| WO2011065459A1 | 2011-06-03 | |||
| WO2016208046A1 | 2016-12-29 |
Foreign References:
| JP2006106734A | 2006-04-20 | |||
| JP2017021881A | 2017-01-26 | |||
| JP2000284671A | 2000-10-13 |
Attorney, Agent or Firm:
SHOYO INTELLECTUAL PROPERTY FIRM (JP)
Download PDF: