| 摘要 |
PURPOSE: A method for recording data of a volume holographic digital storage system is provided to maximize the storage volume of storage media by performing an angle overlap technique and a spatial overlap technique simultaneously, and by storing hologram data in the storage media. CONSTITUTION: A laser beam generated from a light source is divided into a standard light and an object light. The standard light is projected to a reflecting mirror. The object light is projected to a reflecting mirror(302). A system control block generates a control signal, and determines a deflection angle(304). The standard light and the object light, and a signal light modulated are projected to storage media(306). Storage domain information and reproduction angle information are stored in a memory block(308). In case that relevant hologram data are completely recorded, the system control block checks whether all hologram data are recorded(310). The whole number of deflection angle assigned allotted is increased as much as '1'(312). It is checked whether hologram data are recorded in all storage media setup(314). The system control block rotates, a photorefrative crystal through a driving of a motor(316). The P number of storage domain in which present recording is completed is increased as much as '1'(318). The system control block removes a recording mode of a reproducing system, and completes a recording(320).
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