Patents by Inventor Henrikus J. Schouwenhaars

Henrikus J. Schouwenhaars 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: 4935740
    Abstract: A digital-to-analog converter which comprisesan input terminal (1) for receiving a digital input signal,an output terminal (2) for supplying the analog output signal,a current source circuit (3) having N current sources (I.sub.1 to I.sub.N) for generating N currents of substantially equal current intensity at N outputs (3.1 to 3N), anda combination circuit (4) having N inputs (4.1 to 4N) coupled to the N outputs of the current source circuit and an input (6) for receiving the digital input signal and an output (7).In order to convert a digital signal D which is presented to the input terminal (1) during a time interval (Ta), the time interval is sub-divided into at least two sub-intervals (T.sub.d1, T.sub.d2).
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: June 19, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Henrikus J. Schouwenhaars, Dirk W. J. Groeneveld