Holographic scanning device
OwnerCoen Liedenbauminventor
Life of this patent
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Abstract
The invention relates to an optical holographic device for reading out a data page recorded in a holographic medium (106). The device comprises means (104, 105) for forming an imaged data page from the data page. The imaged data page comprises imaged data bits (a, b, c, d) having a first size (s1) in a direction (D). The device comprises means for detecting (114) the imaged data page. The detecting means comprise detector elements having a second size (s2) in the direction (D). The second size is larger than the first size. The device comprises displacement means (200) for displacing the imaged data page in the direction (D) with respect to the detecting means so as to scan the imaged data page.
Claims8
An optical holographic device for reading out a data page recorded in a holographic medium (106), said device comprising means (104, 105) for forming an imaged data page from said data page, said imaged data page comprising imaged data bits (a, b, c, d) having a first size (s1) in a direction (D), means for detecting (114) said imaged data page, said detecting means comprising detector elements having a second size (s2) in said direction, said second size being larger than said first size, and displacement means (200) for displacing the imaged data page in said direction with respect to the detecting means so as to scan said imaged data page.
A method for reading out a data page recorded in a holographic medium, said method comprising a step of forming an imaged data page from said data page on detecting means, said imaged data page comprising imaged data bits having a first size in a direction, at least one step of displacing the imaged data page with respect to the detecting means, and, after each displacing step, a step of measuring the output of at least one detector element having a second size in said direction, said second size being larger than said first size, the method further comprising a step of retrieving the data page from said measurements.
Dependencies are inferred from the claim text.