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:
Oct. 09, 2012
Filed:
Mar. 20, 2008
Applicant:
Wolfgang Hossfeld, Villingen-Schwenningen, DE;
Inventor:
Wolfgang Hossfeld, Villingen-Schwenningen, DE;
Assignee:
Thomson Licensing, , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03H 1/12 (2006.01); G03H 1/16 (2006.01); G03H 1/22 (2006.01); G02B 5/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus for reading a data page from and/or writing a data page to a holographic storage medium includes a common aperture arrangement of one or more reference beams and an object beam or a reconstructed object beam. One or more spatial light modulators are provided for generating the one or more reference beams by modulating a light beam with a modulation pattern having a spatial frequency higher than the spatial frequency of the data page.