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    • 7. 发明授权
    • Apparatus and method to align the elements of a holographic information data storage system
    • 对齐全息信息数据存储系统的元件的装置和方法
    • US07768683B2
    • 2010-08-03
    • US11622931
    • 2007-01-12
    • Allen Keith BatesDaniel James Winarski
    • Allen Keith BatesDaniel James Winarski
    • G03H1/08G02B5/32G06K9/76
    • G02B7/005G02B5/32
    • A method to align the write channel portion of a holographic data storage system, wherein the method establishes a write threshold correlation factor, provides a reference beam, and illuminates a holographic data storage medium encoded with a write reference orientation image with the reference beam to generate a write channel alignment data beam including a projected write reference orientation image. The method projects the write channel alignment data beam onto an optical detector, and calculates a first write correlation factor using the projected write reference orientation image, a stored write reference orientation image, and the tangential matched filter. If the method determines that the first write correlation factor is greater than or equal to the write threshold correlation factor, then the method determines that the spatial write channel is properly aligned.
    • 对准全息数据存储系统的写通道部分的方法,其中方法建立写入阈值相关因子,提供参考光束,并用参考光束照射编码有写参考取向图像的全息数据存储介质,以产生 包括投影的写入参考取向图像的写入通道对准数据光束。 该方法将写入通道对准数据光束投射到光学检测器上,并且使用投影的写入基准定向图像,存储的写入基准定向图像和切向匹配滤波器来计算第一写入相关因子。 如果该方法确定第一写入相关因子大于或等于写入阈值相关因子,则该方法确定空间写入通道被正确地对准。