Coding method, decoding method, codec and data storage medium for holographic storage
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United States of America Patent
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Jan 8, 2013
Grant Date -
Feb 25, 2010
app pub date -
Nov 13, 2007
filing date -
Nov 24, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a coding method for the encryption of information worth protecting on a holographic data storage medium, an item of information (I; I1, I2) to be encrypted is converted into a graphic data image (D1, D2), which is in turn converted into a hologram in order to write the holographic data storage medium (4) therewith. The invention provides for the hologram to be changed graphically before the writing of the holographic data storage medium (4). As a result of the manner in which the hologram is changed graphically, encryption which is less susceptible to faults is achieved in a simple way, which presents increased resistance to a parallelized brute force attack.
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