Patents by Inventor Maria T. V. Hulth

Maria T. V. Hulth 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).

  • Adaptive equalizer included in the receiver for a data transmission system
    Patent number: 4912725
    Abstract: An adaptive equalizer is included in a receiver in a data transmission system. The equalizer is primarily intended for equalizing incoming, sampled signals, which are recoded on the transmission side of the system according to a quaternary code, e.g. a so-called "2B1Q" code. Already known equalizers contain two digital filters (F1, F2) and a decision circuit (B). One filter (F1) smooths out the precursors and the other (F2) the postcursors. According to the invention, the first filter (F1) comprises a digital filter with only one tap for eliminating the dominant precursor (h.sub.-1).
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: March 27, 1990
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventor: Maria T. V. Hulth