Patents by Inventor Hermann Hass

Hermann Hass 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).

  • Method and apparatus for testing a memory chip using a common node for multiple inputs and outputs
    Patent number: 7877649
    Abstract: An apparatus and methods for testing an integrated device comprising memory a test device are provided. At least two data inputs of the memory are coupled to a data output of the test device. As an alternative, at least two data outputs of the memory are coupled to a data input of the test device. Test data are transferred from the test device to the memory chip and written to memory cells of the memory. Data are read from the memory cells of the memory and transferring from the memory to the test device. The data read from the memory chip are compared with the test data written to the memory in order to identify faults of the memory.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: January 25, 2011
    Assignee: Qimonda AG
    Inventors: Joerg Kliewer, Manfred Proell, Stephan Schroeder, Georg Eggers, Wolfgang Ruf, Hermann Hass
  • METHOD AND APPARATUS FOR TESTING A MEMORY CHIP
    Publication number: 20080141075
    Abstract: An apparatus and methods for testing an integrated device comprising memory a test device are provided. At least two data inputs of the memory are coupled to a data output of the test device. As an alternative, at least two data outputs of the memory are coupled to a data input of the test device. Test data are transferred from the test device to the memory chip and written to memory cells of the memory. Data are read from the memory cells of the memory and transferring from the memory to the test device. The data read from the memory chip are compared with the test data written to the memory in order to identify faults of the memory.
    Type: Application
    Filed: November 2, 2007
    Publication date: June 12, 2008
    Inventors: Joerg Kliewer, Manfred Proell, Stephan Schroeder, Georg Eggers, Wolfgang Ruf, Hermann Hass