Watermarking apparatus, software enabling an implementation of an electronic circuit comprising a watermark, method for detecting a watermark and apparatus for detecting a watermark

US8447985B2 · kind B2 · utility

Assignees

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE
• FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG · DE

Inventors

• Daniel Ziener · Erlangen, DE
• Juergen Teich · Erlangen, DE

Key dates

• Filing date: Oct 19, 2006
• Grant date: May 21, 2013
• Expiry date: Aug 7, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F30/30
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A watermarking apparatus for an electronic circuit is described, which comprises the following features: a watermark memory operative to store a watermark characterizing said electronic circuit, and a watermarking signal generator operative to generate based on said watermark a watermarking signal on a power supply line of said electronic circuit, wherein said watermarking signal is detectable for a recognition of said watermark.