Patents by Inventor Josephus Delvigne

Josephus Delvigne 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).

  • Patent number: 4385275
    Abstract: In order to set the circuit to be tested to a test mode, at least one output is led out by an output stage, and the input and output of the output stage internally leads to an exclusive-OR gate. As long as the output has a comparatively high-ohmic termination, as is the case during the normal mode of operation, the exclusive-OR gate will carry the same signal for both signal conditions of the output. For the purpose of testing a complementary pulse pattern is applied to the output, so that the exclusive-OR gate supplies an opposite signal, which establishes the test mode. The output of the exclusive-OR gate may lead to a bistable multivibrator, so that for establishing the test mode only a single complementary signal is required.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: May 24, 1983
    Assignee: U.S. Philips Corporation
    Inventor: Josephus Delvigne