Title:
ホログラム記録再生装置
Document Type and Number:
Japanese Patent JP7194596
Kind Code:
B2
Abstract:
To provide a hologram recording/reproducing device that can make a demodulation error unlikely to occur in a modulation pattern and can efficiently and quickly generate the modulation pattern in which a demodulation error hardly occurs.SOLUTION: A signal bit string to be hologram-recorded from a bit string input unit 1 is input to modulation pattern generation means 10. The modulation pattern generation means 10 is a combination of a generation neural network portion (hereinafter, generation NN) 7 and a demodulation neural network portion (hereinafter, demodulation NN) 8, the generation NN 7 comprises a modulation pattern generation unit 2 generating a modulation pattern, and a data padding/data addition unit 3, the demodulation NN 8 comprises a modulation pattern demodulation unit 4 and a likelihood output unit 5. Finally, the modulation pattern output from the demodulation NN 8 is output to an external modulation pattern output unit 6. In addition, the modulation pattern output unit 6 outputs the input modulation pattern data to an SLM (spatial light modulator) of a hologram recording/reproducing device.SELECTED DRAWING: Figure 1
Inventors:
Yutaro Katano
Tetsuhiko Muroi
Kinoshita Nobutoshi
Norihiko Ishii
Tetsuhiko Muroi
Kinoshita Nobutoshi
Norihiko Ishii
Application Number:
JP2019001477A
Publication Date:
December 22, 2022
Filing Date:
January 08, 2019
Export Citation:
Assignee:
Japan Broadcasting Corporation
International Classes:
G11B7/0065; G03H1/04; G03H1/22; G11B20/10; G11B20/18
Domestic Patent References:
| JP2009032330A | ||||
| JP2009026386A | ||||
| JP9500995A |
Attorney, Agent or Firm:
Hiroshi Kawano
Teruhisa Tsukui
Teruhisa Tsukui