Patents by Inventor Seppo E. M. Lamberg

Seppo E. M. Lamberg 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).

  • Demodulation of digital phase modulated signal
    Patent number: 5585761
    Abstract: A method is disclosed of demodulating a signal (20) modulated by differential quadrature phase shift keying so that two bits of information are coded into each symbol period. The method comprises using a high frequency clock to determine the time taken (t.sub.1, t.sub.2, t.sub.3, t.sub.4), for the modulated signal to execute a predetermined number of cycles, such as 21, in the symbol period (T) and comparing the time thereby determined with the time (t.sub.o) of execution of the predetermined number of cycles for an unmodulated signal.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: December 17, 1996
    Assignee: Nokia Mobile Phones Ltd.
    Inventors: Seppo E. M. Lamberg, Zhi C. Honkasalo