Patents by Inventor Kornelis Jan Wouda

Kornelis Jan Wouda 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).

  • Transmitter for forming non-linear pulse code modulated samples of analog signals by timing the integral of signal samples
    Patent number: 4010422
    Abstract: A non-linear pulse code modulator wherein input signals are coded into digital representations of amplitude range segments and amplitude in excess of the minimum amplitude within the respective range segment uses a first analog-to-digital converter having a sawtooth-shaped control characteristic to determine the amplitude range segment from an input signal sample. The output of the first analog-to-digital converter is used to effectively divide the signal sample by a factor 2.sup.n, where n corresponds to the determined range. The result of the division is then converted in a second analog-to-digital conversion to a digital signal that is combined with the digital range segment signal for transmission thereof.
    Type: Grant
    Filed: October 25, 1973
    Date of Patent: March 1, 1977
    Assignee: U.S. Philips Corporation
    Inventor: Kornelis Jan Wouda