Method and apparatus for storing and retrieving digital page...

Details Method and apparatus for storing and retrieving digital page... Method and apparatus for storing and retrieving digital page...

2005-01-18

2005-01-18

Assaf, Fayez (Department: 2872)

Optical: systems and elements

Holographic system or element

Hardware for producing a hologram

C359S010000, C359S011000, C359S003000, C359S022000, C359S001000

Reexamination Certificate

active

06844949

ABSTRACT:
In a storing mode of an apparatus for sequentially storing and retrieving digital page data, a first and second complex reference beams and a modulated and second signal beams converge on a first/second location to generate a sequence of first and second interference patterns to be sequentially stored on a holographic medium. A shift selectivity of the first complex reference beam is larger than that of the second complex reference beam so that the second interference pattern is used as a servo pattern to sequentially determine where the first interference patterns have been stored.

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patent: 20030189741 (2003-10-01), Kang

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