Associative write verify
AssigneeInPhase Technologies, Inc.
InventorsMark Ayres, Kevin Curtis, Brian Riley
Life of this patent
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Abstract
Associative retrieval techniques of this invention allow a holographic recording device to simultaneously query a plurality of storage locations for the presence of a given data pattern. The techniques use a known pattern common to one or more storage locations to simultaneously verify the success of one or more write operations.
Claims52
An associative write verify system for a holographic recording medium, comprising (1) a hologram, (2) an object beam, (3) a reference beam, (4) a probe beam, (5) a reconstituted reference beam and (6) means for comparing the reference beam with the reconstituted reference beam, wherein the system implements an associative write verify during holographic recording of data, wherein the holographic recording medium has a Rayleigh ratio (R90°) of less than 7×10−3 cm−1.
A method for associative write verify system for a holographic recording medium, comprising (1) interfering an object beam with a reference beam onto the holographic recording medium to form a hologram;
- (2) shining a probe beam;
- (3) forming a reconstituted reference beam and (4) comparing the reference beam with the reconstituted reference beam, wherein the method implements an associative write verify during holographic recording of data, wherein the holographic recording medium has a Rayleigh ratio (R90°) of less than 7×10−3 cm=1.
The method of clam 27, wherein the code is a pattern in a hologram page or information from different hologram pages.
An associative write verify system for a holographic recording medium, comprising (1) a hologram, (2) an object beam, (3) a reference beam, (4) a probe beam, (5) a reconstituted reference beam and (6) photodetector, wherein the system implements an associative write verify during holographic recording, wherein the holographic recording medium has a Rayleigh ratio (R90°) of less than 7×10−3 cm−1.
Dependencies are inferred from the claim text.