Patent ID: 8416668

Claim:
An information recording apparatus for recording information multiplexed in each reference light angle into a recording media by holography, comprising: a signal-light irradiation unit for irradiating signal light onto the recording media; a reference-light irradiation unit for irradiating reference light onto the recording media; and an angle adjustment unit for adjusting an angle for the reference light to be irradiated onto the recording media, wherein the angle adjustment unit adjusts an angle of the reference light at M angles in N (N≧2) recording regions which are divisions of the recording media, thereby M information multiplexed by the multiplexing number M can be recorded in the recording media, and management information for management of the M multiplexed information in the respective recording region is recorded at a reference light angle which is common to the N recording regions by the angle adjustment unit adjusting an angle of the reference light at the reference light angle which is common to the N recording regions.