Patents by Inventor Michael F. Farrell

Michael F. Farrell 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).

  • Method and System for Automatic Control in an Interference Cancellation Device
    Publication number: 20100197233
    Abstract: Signals propagating on an aggressor communication channel can cause detrimental interference in a victim communication channel. A signal processing circuit can generate an interference cancellation signal that, when applied to the victim communication channel, cancels the detrimental interference. The signal processing circuit can dynamically adjust or update two or more aspects of the interference cancellation signal, such as an amplitude or gain parameter and a phase or delay parameter. Via the dynamic adjustments, the signal processing circuit can adapt to changing conditions, thereby maintaining an acceptable level of interference cancellation in a fluctuating operating environment. A control circuit that implements the parametric adjustments can have at least two modes of operation, one for adjusting the amplitude parameter and one for adjusting the phase parameter. The modes can be selectable or can be intermittently available, for example.
    Type: Application
    Filed: April 9, 2010
    Publication date: August 5, 2010
    Inventors: Andrew Joo Kim, Edward Gebara, Bruce C. Schmukler, Mark W. Dickmann, Michael F. Farrell, Michael G. Vrazel, David Anthony Stelliga, Joy Laskar, Charles E. Summers
  • Method and system for automatic control in an interference cancellation device
    Patent number: 7725079
    Abstract: Signals propagating on an aggressor communication channel can cause detrimental interference in a victim communication channel. A signal processing circuit can generate an interference cancellation signal that, when applied to the victim communication channel, cancels the detrimental interference. The signal processing circuit can dynamically adjust or update two or more aspects of the interference cancellation signal, such as an amplitude or gain parameter and a phase or delay parameter. Via the dynamic adjustments, the signal processing circuit can adapt to changing conditions, thereby maintaining an acceptable level of interference cancellation in a fluctuating operating environment. A control circuit that implements the parametric adjustments can have at least two modes of operation, one for adjusting the amplitude parameter and one for adjusting the phase parameter. The modes can be selectable or can be intermittently available, for example.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: May 25, 2010
    Assignee: Quellan, Inc.
    Inventors: Andrew Joo Kim, Edward Gebara, Bruce C. Schmukler, Mark W. Dickmann, Michael F. Farrell, Michael G. Vrazel, David Anthony Stelliga, Joy Laskar, Charles E. Summers