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. 07, 2008
Filed:
Apr. 21, 2005
Robert Frans Maria Hendriks, Eindhoven, NL;
Thomas Jan DE Hoog, Eindhoven, NL;
Peter Van Der Walle, Eindhoven, NL;
Robert Frans Maria Hendriks, Eindhoven, NL;
Thomas Jan De Hoog, Eindhoven, NL;
Peter Van Der Walle, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to an information carrier, and a system for positioning such an information carrier in an apparatus. This system comprises an optical element () for generating a periodic array of light spots () intended to be applied to an information carrier (), said information carrier () comprising a first periodic structure () intended to interfere with said periodic array of light spots () for generating a first Moiré pattern, and a second periodic structure () intended to interfere with said periodic array of light spots () for generating a second Moiré pattern, analysis means for deriving from said first and second Moiré patterns, the angle value (S) between said periodic array of light spots () and said information carrier (), and actuation means (AC-AC-AC) for adjusting the angular position of said information carrier () with respect to said array of light spots (), from control signals () derived based on said angle value (S).