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    • 4. 发明授权
    • Dynamic refresh for optical data storage
    • 光学数据存储的动态刷新
    • US6046830A
    • 2000-04-04
    • US162556
    • 1998-09-29
    • Richard A. LinkeWarren D. Smith
    • Richard A. LinkeWarren D. Smith
    • G11B7/00G03H1/04G03H1/22G11B7/0055G11B7/0065G11B27/00G03H1/02G03H1/20G03H1/30
    • G11B7/0065
    • A method for dynamically refreshing a holographic data storage medium wherein data is stored in a plurality of data pages, each of which comprises a two dimensional pattern of pixel data. Each data page is stored by interfacing an image or a Fourier transform of the data page with a reference beam to form a holographic recording of the data page in the holographic medium. Pursuant to the method, all of the data pages are classified as either good pages, each of which was written into storage less than a threshold time ago related to the decay of the holographic recording, or empty pages available for writing, or self-erasing pages which are self-erasing with time. At sequential time intervals, the oldest good page is read which then becomes a self-erasing page, and its data is rewritten into an empty page which then becomes the youngest good page, and the oldest self-erasing page becomes an empty page.
    • 一种用于动态刷新全息数据存储介质的方法,其中数据被存储在多个数据页中,每个数据页包括像素数据的二维图案。 通过将数据页面的图像或傅立叶变换与参考光束接口来存储每个数据页面,以在全息介质中形成数据页面的全息记录。 根据该方法,所有数据页被分类为好的页面,每个页面都被写入存储器,该存储器小于与全息记录的衰减有关的阈值时间,或者可用于写入的空页面或自擦除 随着时间的推移自动擦除的页面。 在连续的时间间隔,读取最旧的优质页面,然后成为自擦除页面,其数据被重写为空页面,然后成为最小的页面,最旧的自擦除页面变成空页面。