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. 11, 2011
Filed:
Dec. 15, 2009
Stefan Knappmann, Zimmern OB Rotteweil, DE;
Michael Krause, Villingen-Schwenningen, DE;
Sergey Khrushchev, Unterkirnach, DE;
Stefan Knappmann, Zimmern OB Rotteweil, DE;
Michael Krause, Villingen-Schwenningen, DE;
Sergey Khrushchev, Unterkirnach, DE;
Thomson Licensing, Boulogne, Billancourt, FR;
Abstract
An optical recording medium to be used for a retail activation solution is proposed. The optical recording medium is a modified ROM disk that can only be played after the application of an activation process. For this purpose at least a part of a reflective layer of a read-only area of the optical recording medium is replaced by a light sensitive layer stack that changes its reflectivity upon illumination. Also proposed are a method for producing such an optical recording medium as well as methods and apparatuses for initializing and/or activating such an optical recording medium.