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:
Aug. 03, 2010
Filed:
Feb. 22, 2007
Stefan Kimmelmann, VS-Pfaffenweiler, DE;
Christof Ballweg, VS-Villingen, DE;
Uwe Reschke, Horb am Neckar, DE;
Stefan Kimmelmann, VS-Pfaffenweiler, DE;
Christof Ballweg, VS-Villingen, DE;
Uwe Reschke, Horb am Neckar, DE;
Thomson Licensing, Boulogne-Billancourt, FR;
Abstract
The present invention relates to a holographic storage medium, and more specifically to a holographic storage medium with an improved servo architecture for precise positioning of a laser beam in radial, axial and tangential direction. According to the invention, a holographic storage medium includes a holographic layer for storing holograms and a servo layer with a track structure for positioning a light beam for reading and/or recording of a hologram relative to the holographic recording medium, wherein the track structure includes a pack of two or more tracks.