Patents by Inventor Marinus Doornekamp

Marinus Doornekamp 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).

  • Fast settling data slicer comprising a low-pass filter with switchable cut-off frequency and a notch-filter
    Publication number: 20050036568
    Abstract: A data slicer circuit for extracting data from a received analogue signal having a preamble and a data portion with the data. The circuit comprises a low pass filter for obtaining a DC value of the received signal, and a comparator for comparing the received analogue signal to the DC value of the received signal. In dependence on the comparison of the received analogue signal to the DC value of the received signal, the comparator generates a digital bit stream. A filter for rejecting the preamble frequency receives analogue signal and feeds a filtered signal to the low pass filter. By rejecting the preamble frequency, before or after, the low pass filter a shorter settling time can be obtained.
    Type: Application
    Filed: December 23, 2002
    Publication date: February 17, 2005
    Inventors: Hendricus De Ruijter, Marinus Doornekamp