Patents by Inventor Walter H. E. Widl

Walter H. E. Widl 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 arrangement for supervising signal amplitude converters
    Patent number: 4328584
    Abstract: A number of amplitude converters (1) in a telecommunication system are supervised during the normal operation of the system by means of three comparison arrangements (4, 6, 9). The first and the second of the comparison arrangements has its inputs (5 and 7) connected to the inputs and the outputs, respectively, of two of the converters. The third comparison arrangement (9) has its inputs (8) connected to the outputs of the first and the second comparison arrangement and generates an alarm signal if the first comparison arrangement (4) signals a relation between two supervised in-signals, which deviates acceptably from a comparison result set value, and if the second comparison arrangement (6) signals a relation between the two out-signals which deviates unacceptably from a set value.
    Type: Grant
    Filed: March 12, 1980
    Date of Patent: May 4, 1982
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Kurt A. Samuelsson, Walter H. E. Widl