Optical information recording/reproducing device and optical information recording/reproducing method

An optical information recording/reproducing device that radiates signal light and reference light to a recording medium, forms a hologram, and records information and emits the reference light to the hologram of the recording medium and reproduces information, the optical information recording/reproducing device comprising:

• a laser light source that generates the signal light and the reference light;
• a light angle control unit that controls an angle of the reference light incident on the recording medium;
• a light detecting unit that detects diffracted light when the reference light is radiated to the recording medium;
• a positioning unit that allocates an address to the recording medium and performs positioning of the recording medium for the address;
• a tilt measuring unit that measures a tilt of the recording medium;
• and
• a control unit that controls the incidence angle of the reference light by the light angle control unit, on the basis of a tilt measurement result in a recording mode, which is stored in a storage unit and is measured by the tilt measuring unit, in a reproduction mode, wherein
• the tilt measurement result and address information are stored in the storage unit together with a unique number of the recording medium, the tilt measurement result and the address information corresponding to the unique number are read, and reproduction is performed.

An optical information recording/reproducing device that radiates signal light and reference light to a recording medium, forms a hologram, and records information and emits the reference light to the hologram of the recording medium and reproduces information, the optical information recording/reproducing device comprising:

• a laser light source that generates the signal light and the reference light;
• a light angle control unit that controls an angle of the reference light incident on the recording medium;
• a light detecting unit that detects diffracted light when the reference light is radiated to the recording medium;
• a positioning unit that allocates an address to the recording medium and performs positioning of the recording medium for the address;
• a tilt measuring unit that measures a tilt of the recording medium;
• a control unit that controls the incidence angle of the reference light by the light angle control unit, on the basis of a tilt measurement result in a recording mode, which is stored in a storage unit and is measured by the tilt measuring unit, in a reproduction mode,
• a management information generating unit that generates management information of the recording medium;
• a tilt information adding unit that adds the tilt measurement result and the measured address information to the management information;
• a management information recording unit that records the management information on the recording medium;
• and
• a management information reproducing unit that reproduces the management information from the recording medium.

An optical information recording/reproducing method that radiates signal light and reference light to a recording medium, forms a hologram, and records information and emits the reference light to the hologram of the recording medium and reproduces information, the optical information recording/reproducing method comprising:

• generating the signal light and the reference light;
• controlling an angle of the reference light incident on the recording medium;
• allocating an address to the recording medium and performing positioning of the recording medium for the address;
• measuring a tilt of the recording medium in a recording mode;
• storing the address and a tilt measurement result for the address measured by the tilt measurement;
• and
• controlling the incidence angle of the reference light, on the basis of the address and the tilt measurement result for the address, in a reproduction mode.