Patents by Inventor Rafik Dagher

Rafik Dagher 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).

  • REDUCED AREA ACTIVE ABOVE-GROUND AND BELOW-SUPPLY NOISE SUPPRESSION CIRCUITS
    Publication number: 20090102509
    Abstract: A method and apparatus for noise suppression. A circuit has a noise detection unit, a noise suppression unit, and a control unit. The noise suppression unit has an input and an output, wherein the input of the noise detection unit is connected to a signal and generates a signal change at the output if a change in the signal is detected. The noise suppression unit has an input and an output, wherein the input of the noise suppression unit is connected to the output of the noise detection unit and generates a correction to the signal in response to detecting the signal change at the output of the noise detection unit. The control unit has an input and an output, wherein input to the control unit is connected to the signal and turns off the noise suppression unit if a state change is detected in the signal.
    Type: Application
    Filed: October 23, 2007
    Publication date: April 23, 2009
    Inventors: Rafik Dagher, Christopher M. Durham, Peter J. Klim
  • Reduced area active above-ground and below-supply noise suppression circuits
    Patent number: 7511529
    Abstract: A method and apparatus for noise suppression. A circuit has a noise detection unit, a noise suppression unit, and a control unit. The noise suppression unit has an input and an output, wherein the input of the noise detection unit is connected to a signal and generates a signal change at the output if a change in the signal is detected. The noise suppression unit has an input and an output, wherein the input of the noise suppression unit is connected to the output of the noise detection unit and generates a correction to the signal in response to detecting the signal change at the output of the noise detection unit. The control unit has an input and an output, wherein input to the control unit is connected to the signal and turns off the noise suppression unit if a state change is detected in the signal.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: March 31, 2009
    Assignee: International Business Machines Corporation
    Inventors: Rafik Dagher, Christopher M. Durham, Peter J. Klim