Patents by Inventor Hermanus J. S. Aben

Hermanus J. S. Aben 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: 4677463
    Abstract: By including a counting circuit, optionally followed by a sample-and-hold circuit coupled to an output of a quadrature-component demodulator in a chrominance signal processing section of a color television receiver and providing a memory circuit for a presetting value, which memory circuit is coupled to a control signal input of a chrominance carrier oscillator via a digital-to-analog converter, a fast, sufficiently accurate automatic adjusting procedure for this oscillator can be obtained, while a normally provided control loop of the oscillator is made inoperative.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: June 30, 1987
    Assignee: U.S. Philips Corporation
    Inventor: Hermanus J. S. Aben