| 摘要 |
The present invention relates to a method of reading information from a holographic data storage medium (10), comprising the steps of: projecting a reference beam (12) having defined properties of a first type into the holographic data storage medium, thereby generating a first diffracted beam (14), detecting the first diffracted beam by a detector array (16) having a plurality of detector areas, selecting a first set of detector areas useful for reconstructing information stored in the holographic data storage medium, reading out data from the first set of detector areas, and not reading out data from other detector areas, projecting a reference beam having defined properties of a second type different from the first type into the holographic data storage medium, thereby generating a second diffracted beam, detecting the second diffracted beam by the detector array having a plurality of detector areas, and selecting a second set of detector areas useful for reconstructing information stored in the holographic data storage medium, reading out data from the second set of detector areas, and not reading out data from other detector areas, the second set of detector areas being different from the first set of detector areas. The present invention further relates to a holographic data read out device.
|
