Title:
HOLOGRAPHIC MEMORY INFORMATION ENCODING METHOD, HOLOGRAPHIC MEMORY RECORDING METHOD, AND HOLOGRAPHIC MEMORY DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/024596
Kind Code:
A1
Abstract:
Provided is an information-encoding method and a holographic memory device which increase the information volume per page of holographic memory and reduce the bit error rate to ensure a higher multiplexing number. The holographic memory information encoding method captures information about signal page data in holographic memory as different data of a plurality of stages by block encoding, and superimposes each data on a single page of signal page data. The different data of a plurality of stages includes optical amplitude data and phase data. Amplitude data is divided by area through block encoding. When n number of odd-numbered ON bits exist in a divided area in the phase data, a phase of 2πs/n (where n and s are natural numbers) is imparted as the sth phase information to one set of binary data, and the same phase is imparted to the other set of binary data.
Inventors:
MATOBA OSAMU (JP)
Application Number:
PCT/JP2012/005161
Publication Date:
February 21, 2013
Filing Date:
August 15, 2012
Export Citation:
Assignee:
NAT UNIV CORP KOBE UNIV (JP)
MATOBA OSAMU (JP)
MATOBA OSAMU (JP)
International Classes:
G11B7/0065; G03H1/04; G11B7/007; G11B7/135; G11B20/10
Foreign References:
| JP2008293554A | 2008-12-04 | |||
| JP2010027188A | 2010-02-04 |
Attorney, Agent or Firm:
THE PATENT CORPORATE BODY GLOBAL INTELLECTUAL PROPERTY (JP)
Patent business corporation global intellectual property (JP)
Patent business corporation global intellectual property (JP)
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