How to Equalize Playback Efficiency of Volume Holographic Digital Data Storage Systems

摘要

The present invention relates to a storage material of a volume holographic digital data storage system. The present invention relates to a method of setting a recording time of a holographic data page using angular overlap, wherein The diffraction efficiency equalization method of VHDDSS sets the recording time according to the number of times of overlapping in the same place of the storage medium as the page increases, the intrinsic erasing time constant of the recording material, and the incident angle of the reference light projected onto the stored hologram data page. to provide.;Therefore, according to the present invention, by using the reproduction efficiency equalizing method of recording the recording time by recording the difference according to the incident angle of the reference light and the number of overlapping times, it is possible to improve the image quality of the reproduced image by minimizing the fluctuation of the reproduction efficiency. This free, angular range of overlapping angles can be extended, and the recording time can be shortened.