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:
Jul. 31, 2012
Filed:
Oct. 09, 2009
Applicant:
Mark R. Ayres, Boulder, CO (US);
Inventor:
Mark R. Ayres, Boulder, CO (US);
Assignee:
InPhase Technologies, Inc., Longmont, CO (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03H 1/00 (2006.01); G03H 1/26 (2006.01); G03H 1/22 (2006.01); G06K 9/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
A holographic device is provided for recovering data in a holographic memory system. The device use homodyne detection to introduce a local oscillator beam into a reconstructed data beam of the recovered hologram. An image of the combined beam comprising the reconstructed data beam and local oscillator beam may be processed to obtain contrast level information for the pixels of the detected image. This contrast level information may then be used to obtain an increased contrast image of the recovered hologram, which may increase the signal to noise ratio (SNR) of the recovered data.