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:
May. 01, 2012
Filed:
Mar. 16, 2009
Applicants:
Frank Przygodda, Villingen-Schwenningen, DE;
Joachim Knittel, Tuttlingen, DE;
Inventors:
Frank Przygodda, Villingen-Schwenningen, DE;
Joachim Knittel, Tuttlingen, DE;
Assignee:
Thomson Licensing, Issy-les-Moulineaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03H 1/10 (2006.01); G03H 1/12 (2006.01); G03H 1/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus for reading from and/or writing to holographic storage media is described, and more specifically an apparatus for reading from and/or writing to holographic storage media with two or more reference beams that overlap inside the holographic storage medium for reading and/or writing a single hologram. The two or more reference beams are mutually incoherent during reading and/or writing.