Patents by Inventor Osten E. Erikmats

Osten E. Erikmats 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: 6147560
    Abstract: The present invention relates to methods and devices for such control and supervision of an oscillator signal from a controllable oscillator that is done mainly to control the frequency variation of the oscillator signal. According to the invention, the controllable oscillator is controlled by a controlling voltage, which in turn is modified by a correction signal, generated in a control loop. A time discrete representation of a secondary phase is generated in the control loop, the secondary phase corresponding to a frequency being the difference between the frequency of the oscillator signal and a constant frequency. A time discrete approximation signal is generated in dependence of the time discrete representation of the secondary phase. A time discrete error signal is generated in dependence of the time discrete approximation signal, the time discrete error signal indicating the difference between the actual frequency slope of the oscillator signal and a desired frequency slope.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: November 14, 2000
    Assignee: Telefonaktiebolget LM Ericsson
    Inventors: Lars I. Erhage, Osten E. Erikmats, Svenolov Rizell, H.ang.kan L. Karlsson