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. 23, 2012
Filed:
Feb. 13, 2007
Antonius Adriaan Maria Staring, Eindhoven, NL;
Pieter Bas Ijdens, Eindhoven, NL;
Robert Jochemsen, Eindhoven, NL;
Ronald Marcel Tol, Eindhoven, NL;
Antonius Adriaan Maria Staring, Eindhoven, NL;
Pieter Bas Ijdens, Eindhoven, NL;
Robert Jochemsen, Eindhoven, NL;
Ronald Marcel Tol, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Amsterdam, NL;
Abstract
In a method for providing copy-protection services on a storage medium (for instance a solid state memory module), the data are arranged in sectors to which a field (S4T) is associated, where said field contains a random value Rwhich is changed randomly when writing data to said sector. By encrypting the data stored on the medium using a key which depends critically on said random numbers, bit-by-bit copies (apart from said random numbers, which can not be deterministically changed by an application) to a second storage medium or recopies from some intermediate storage medium, can not be decrypted because the values of said random numbers will have changed, thus preventing unauthorized duplication and replay attacks.