The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2008
Filed:
Sep. 12, 2005
Christophe Sigel, Broomfield, CO (US);
Michael L. Leonhardt, Longmont, CO (US);
William Lynch, Boulder, CO (US);
Paulo E. X. Silveira, Boulder, CO (US);
Christophe Sigel, Broomfield, CO (US);
Michael L. Leonhardt, Longmont, CO (US);
William Lynch, Boulder, CO (US);
Paulo E. X. Silveira, Boulder, CO (US);
Storgae Technology Corporation, Louisville, CO (US);
Abstract
System and method for content-addressable search of holographically stored data primarily optimized with respect to search performance. A search is performed, by a holographic correlator system, on a structured representation of original data, stored in a holographic data storage medium. In a first aspect, orthogonal phase encoding of both data storage and search pages provides improvement of correlator system signal to noise ratio and dynamic range. In a second aspect, correlator incorporates heterodyne detection of a plurality of correlation signals, obtained by modulation and amplification thereof by a plurality of frequency-shifted reference beams. In a third aspect, the invention provides a method whereby multiple searches can simultaneously interrogate a single data storage location.