Patents by Inventor Claudius Dan

Claudius Dan 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).

  • Variable frequency multi-phase oscillator
    Patent number: 7515005
    Abstract: A variable frequency multi-phase oscillator for providing multi-phase signals is disclosed. The variable frequency multi-phase oscillator includes a correlator, a plurality of delay cells, and a NOR circuit. Each delay cell includes a current supply, a capacitor, a comparator, a switch, and a logic unit. The plurality of delay cells generate the multi-phase signals that are phase correlated within a large frequency range. The frequency and duty cycles of the multi-phase signals are adjustable.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: April 7, 2009
    Assignee: O2Micro International Ltd.
    Inventor: Claudius Dan
  • Variable frequency multi-phase oscillator
    Publication number: 20080012652
    Abstract: A variable frequency multi-phase oscillator for providing multi-phase signals is disclosed. The variable frequency multi-phase oscillator includes a correlator, a plurality of delay cells, and a NOR circuit. Each delay cell includes a current supply, a capacitor, a comparator, a switch, and a logic unit. The plurality of delay cells generate the multi-phase signals that are phase correlated within a large frequency range. The frequency and duty cycles of the multi-phase signals are adjustable.
    Type: Application
    Filed: October 19, 2006
    Publication date: January 17, 2008
    Inventor: Claudius Dan