Patents by Inventor Roy P.M. Van Lammeren

Roy P.M. Van Lammeren 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).

  • Color decoding
    Patent number: 6064446
    Abstract: In a method of demodulating an analog chrominance signal (C), digital quadrature signals are generated (DPA, SIN ROM, COS ROM) for demodulating (MUL DAC U, MUL DAC V) the analog chrominance signal (C) to obtain analog demodulated color difference signals (U, V). A digital phase error signal is furnished (.SIGMA..DELTA.mod) from at least one (V) of the analog demodulated color difference signals (U, V). The digital phase error signal is digitally filtered (DLF) to obtain a phase control signal (K) for the digital quadrature signals generation (DPA, SIN ROM, COS ROM).
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: May 16, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Roy W.B. Wissing, Roy P.M. Van Lammeren, Marcellinus J.M. Pelgrom