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1. WO2009008208 - RECORDING AND REPRODUCING DEVICE, RECORDING AND REPRODUCING METHOD, RECORDING DEVICE, RECORDING METHOD, REPRODUCING DEVICE AND REPRODUCING METHOD

Publication Number WO/2009/008208
Publication Date 15.01.2009
International Application No. PCT/JP2008/058353
International Filing Date 01.05.2008
IPC
G03H 1/04 2006.01
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
HHOLOGRAPHIC PROCESSES OR APPARATUS
1Holographic processes or apparatus using light, infra-red, or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
04Processes or apparatus for producing holograms
G03H 1/26 2006.01
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
HHOLOGRAPHIC PROCESSES OR APPARATUS
1Holographic processes or apparatus using light, infra-red, or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
26Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique
CPC
G03H 2001/0441
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
HHOLOGRAPHIC PROCESSES OR APPARATUS
1Holographic processes or apparatus using light, infra-red or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
04Processes or apparatus for producing holograms
0402Recording geometries or arrangements
0441Formation of interference pattern, not otherwise provided for
G03H 2210/22
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
HHOLOGRAPHIC PROCESSES OR APPARATUS
2210Object characteristics
202D object
222D SLM object wherein the object beam is formed of the light modulated by the SLM
G03H 2210/562
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
HHOLOGRAPHIC PROCESSES OR APPARATUS
2210Object characteristics
50Nature of the object
56Multiple objects, e.g. each in different environment
562Holographic object, i.e. a combination of an object and holobject
G03H 2225/32
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
HHOLOGRAPHIC PROCESSES OR APPARATUS
2225Active addressable light modulator
30Modulation
32Phase only
G11B 7/0065
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor
004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
0065Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
G11B 7/128
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor
12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
125Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
128Modulators
Applicants
  • ソニー株式会社 SONY CORPORATION [JP]/[JP] (AllExceptUS)
  • 田中 健二 TANAKA, Kenji [JP]/[JP] (UsOnly)
  • 福本 敦 FUKUMOTO, Atsushi [JP]/[JP] (UsOnly)
Inventors
  • 田中 健二 TANAKA, Kenji
  • 福本 敦 FUKUMOTO, Atsushi
Agents
  • 岩▲崎▼ 幸邦 IWASAKI, Sachikuni
Priority Data
2007-18280312.07.2007JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) RECORDING AND REPRODUCING DEVICE, RECORDING AND REPRODUCING METHOD, RECORDING DEVICE, RECORDING METHOD, REPRODUCING DEVICE AND REPRODUCING METHOD
(FR) DISPOSITIF D'ENREGISTREMENT ET DE REPRODUCTION, PROCÉDÉ D'ENREGISTREMENT ET DE REPRODUCTION, DISPOSITIF D'ENREGISTREMENT, PROCÉDÉ D'ENREGISTREMENT, DISPOSITIF DE REPRODUCTION ET PROCÉDÉ DE REPRODUCTION
(JA) 記録再生装置、記録再生方法、記録装置、記録方法、再生装置、再生方法
Abstract
(EN)
It is an object to propose a recording method of carrying out a spatial optical phase modulation corresponding to recording data so that the data are recorded on a hologram recording medium in accordance with phase information and a reproducing method of carrying out proper reading-out of the recorded phase information to reproduce the recoded data. Signal light to which a phase modulation pattern is given in accordance with recording data and reference light to which a predetermined phase modulation pattern is given are irradiated to a hologram recording medium. With this, the recording data are recorded on the hologram recording medium by phase information of the recording data. At the reproduction time, the reference light and DC light with a total phase that has a π/2 phase difference with respect to a standard phase in the reference light are irradiated to the hologram recording medium. Thus, reproducing light can be made in phase with the DC light, and the DC light can be added to the reproducing light as a component of the amplitude “1”. In this way, the reproducing light to which the DC light is added is read out, so that the recorded phase information can be correctly read out.
(FR)
L'invention vise à proposer un procédé d'enregistrement consistant à réaliser une modulation de phase optique spatiale correspondant à des données d'enregistrement de telle sorte que les données sont enregistrées sur un support d'enregistrement d'hologramme conformément à des informations de phase et sur un procédé de reproduction consistant à réaliser une lecture appropriée des informations de phase enregistrées pour reproduire les données enregistrées. Une lumière de signal à laquelle un motif de modulation de phase est donnée conformément aux données d'enregistrement et une lumière de référence à laquelle un motif de modulation de phase prédéterminé est donnée son irradiées sur un support d'enregistrement d'hologramme. Avec ceci, les données d'enregistrement sont enregistrées sur le support d'enregistrement d'hologramme par des informations de phase des données d'enregistrement. Au moment de la reproduction, la lumière de référence et une lumière en courant continu avec une phase totale qui a une différence de phase de π/2 par rapport à une phase standard dans la lumière de référence sont irradiées sur le support d'enregistrement d'hologramme. Ainsi, une lumière de reproduction peut être effectuée en phase avec une lumière en courant continu, et la lumière en courant continu peut être ajoutée à la lumière de reproduction en tant que composante de l'amplitude «1». De cette façon, la lumière de reproduction à laquelle la lumière en courant continu est ajoutée est lue, de telle sorte que les informations de phase enregistrées peuvent être correctement lues.
(JA)
 記録データに応じて空間光位相変調を行うことで、ホログラム記録媒体に対し位相の情報によりデータ記録を行う記録手法と、このように記録された位相の情報を適正に読み出すことで記録したデータを再生する再生手法を提案する。記録データに応じた位相変調パターンを与えた信号光と、所定の位相変調パターンを与えた参照光とをホログラム記録媒体に対して照射する。これにより、記録データを位相の情報によって上記ホログラム記録媒体に対して記録することができる。再生時には、参照光と、この参照光内の基準位相との位相差がπ/2となる全体位相を有するDC光とをホログラム記録媒体に対して照射する。それにより、再生光と上記DC光の位相を揃えることができ、上記再生光に対し、上記DC光が振幅「1」の成分として加算することができる。このようにDC光が加算された再生光を読み出すことで、記録された位相の情報が正しく読み出すことができる。
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