Method and apparatus for storing and retrieving a sequence...

Details Method and apparatus for storing and retrieving a sequence... Method and apparatus for storing and retrieving a sequence...

2005-02-01

2005-02-01

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

06850346

ABSTRACT:
In a storing mode of an apparatus for storing and retrieving a sequence of digital page data, a first/second complex reference beam and a modulated signal beam converge on a storing location to generate a sequence of first/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.

REFERENCES:
patent: 5777760 (1998-07-01), Hays et al.
patent: 5835470 (1998-11-01), Campbell et al.
patent: 5943145 (1999-08-01), Curtis et al.
patent: 6512385 (2003-01-01), Pfaff et al.
patent: 6697180 (2004-02-01), Wilson et al.
patent: 20030189741 (2003-10-01), Kang

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