Patents by Inventor Christian Aumüller

Christian Aumüller has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Shielding device for integrated circuits
    Patent number: 6919618
    Abstract: A shielding device includes optical and/or electrical shielding disposed on the side of the integrated circuit in the semiconductor chip facing the substrate. Preferred configurations use an SOI substrate with the integrated circuit in the body silicon layer and the insulator layer as a device for optical shielding from the bulk silicon layer. Electrical conductors may be present as an optical and electrical shielding device in the bulk silicon layer, and they may be connected to the circuit using vias.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: July 19, 2005
    Assignee: Infineon Technologies AG
    Inventors: Christian Aumüller, Marcus Janke, Peter Hofreiter
  • Preventing the unwanted external detection of operations in digital integrated circuits
    Publication number: 20040143747
    Abstract: In a digital circuit comprising an asynchronous circuit, the supply voltage of the asynchronous circuit is varied by means of a random voltage jitter. The random variation of the supply voltage causes a time jitter in the processing of the individual operations within the asynchronous circuit, whereby an artificial synchronizing of individual measurements in side channel attacks is prevented.
    Type: Application
    Filed: December 11, 2003
    Publication date: July 22, 2004
    Applicant: Infineon Technologies AG
    Inventors: Gernot Eckstein, Christian Aumueller, Stefan Wallstab