Kenneth P Laberteaux

age ~56

from Ann Arbor, MI

Also known as:
  • Ken Laberteaux
  • Kenneth P Leberteau
  • Kenneth X
Phone and address:
2357 Springridge Dr, Ann Arbor, MI 48103
7349752355

Kenneth Laberteaux Phones & Addresses

  • 2357 Springridge Dr, Ann Arbor, MI 48103 • 7349752355
  • 3240 Old Hickory Pl, Ann Arbor, MI 48104 • 7349752355
  • 443 Village Green Blvd, Ann Arbor, MI 48105
  • 609 Oakside St, South Bend, IN 46614 • 5742998409 • 2192998409
  • Grand Rapids, MI
  • 2357 Springridge Dr, Ann Arbor, MI 48103 • 7343957111

Work

  • Position:
    Food Preparation and Serving Related Occupations

Education

  • Degree:
    Associate degree or higher

Us Patents

  • Echo Canceller Employing Dual-H Architecture Having Improved Coefficient Transfer

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  • US Patent:
    6337907, Jan 8, 2002
  • Filed:
    Nov 21, 2000
  • Appl. No.:
    09/717932
  • Inventors:
    Kenneth P. Laberteaux - South Bend IN
    Richard C. Younce - Wakarush IN
  • Assignee:
    Tellabs Operations, Inc. - Lisle IL
  • International Classification:
    H04M 100
  • US Classification:
    37940608, 370290
  • Abstract:
    An echo canceller circuit for use in an echo canceller system is set forth. The echo canceller circuit comprises a first digital filter having non-adaptive tap coefficients to simulate an echo response occurring during a call. A second digital filter having adaptive tap coefficients to simulate an echo response occurring during the call is also used. The adaptive tap coefficients of the second digital filter are updated over the duration of the call. A coefficient transfer controller is disposed in the echo canceller circuit to transfer the adaptive tap coefficients of the second digital filter to replace the tap coefficients of the first digital filter when a value, Ã, is greater than a value, {overscore (E)}, and, concurrently, when à is greater than a value, E. The value of {overscore (E)} corresponds to the ratio between a signal-plus-echo signal and a first echo compensated signal using the first digital filter. The value of à corresponds to the ratio between the signal-plus-echo signal and a second echo compensated signal using the second digital filter.
  • Echo Canceller Employing Dual-H Architecture Having Improved Non-Linear Echo Path Detection

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  • US Patent:
    6507652, Jan 14, 2003
  • Filed:
    Jan 18, 2000
  • Appl. No.:
    09/483988
  • Inventors:
    Kenneth P. Laberteaux - South Bend IN
  • Assignee:
    Tellabs Operations, Inc. - Naperville IL
  • International Classification:
    H04M 100
  • US Classification:
    37940605, 37940608
  • Abstract:
    An echo canceller circuit for use in an echo canceller system is set forth that provides sensitive non-linear echo path response detection. The echo canceller circuit comprises a first digital filter having non-adaptive tap coefficients to simulate an echo response occurring during a call. A second digital filter having adaptive tap coefficients to simulate an echo response occurring during the call is also used. The adaptive tap coefficients of the second digital filter are updated over the duration of the call. A coefficient transfer controller is disposed in the echo canceller circuit to transfer the adaptive tap coefficients of the second digital filter to replace the tap coefficients of the first digital filter when a set of one or more transfer conditions is met. A non-linear echo path response detector is provided. The non-linear echo path detector is responsive to one or more parameters of the first and second digital filters to detect a non-linear echo path condition.
  • Echo Canceller Employing Dual-H Architecture Having Variable Adaptive Gain Settings

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  • US Patent:
    6614907, Sep 2, 2003
  • Filed:
    Jan 18, 2000
  • Appl. No.:
    09/484947
  • Inventors:
    Kenneth P. Laberteaux - South Bend IN
    Richard C. Younce - Wakarush IN
    Bruce E. Dunne - Naperville IL
    David S. Farrell - Lisle IL
  • Assignee:
    Tellabs Operations, Inc. - Naperville IL
  • International Classification:
    H04M 100
  • US Classification:
    37940603, 37940608
  • Abstract:
    An echo canceller circuit for use in an echo canceller system is set forth that provides sensitive double-talk detection. The echo canceller circuit comprises a second digital filter having adaptive tap coefficients to stimulate an echo response occurring during the call. The adaptive tap coefficients of the second digital filter are updated over the duration of the call using a Least Mean Squares process having an adaptive gain a. A channel condition detector is used to detect channel conditions during the call. The channel condition detector is responsive to detected channel conditions for changing the adaptive gain a during the call. For example, the channel condition detector may detect the presence of a double-talk condition and set the adaptive gain a to zero. Similarly, the channel condition detector may detect the occurrence of a high background noise condition and set the adaptive gain a to a level less than 1 that is dependent on the detected level of the background noise. Other similar channel conditions and corresponding adaptive gain settings may likewise be utilized.
  • Echo Canceller Employing Dual-H Architecture Having Split Adaptive Gain Settings

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  • US Patent:
    6718035, Apr 6, 2004
  • Filed:
    Apr 16, 2001
  • Appl. No.:
    09/834718
  • Inventors:
    Richard C. Younce - Wakarush IN
    Kenneth P. Laberteaux - South Bend IN
  • Assignee:
    Tellabs Operations, Inc. - Naperville IL
  • International Classification:
    H04M 900
  • US Classification:
    37940601, 37940608
  • Abstract:
    An echo canceller circuit is set forth. The echo canceller circuit includes a digital filter having adaptive tap coefficients to simulate an echo response occurring during a call. The adaptive tap coefficients are updated during the call using a Means Squares process. A tap energy detector is also employed. The tap energy detector identifies and divides groups of taps having high energy from groups of taps having low energy. The high energy tap groups are smaller in number than the low energy tap groups. The high energy tap groups are adapted separately from the low energy tap groups using the Least Squares process. Still further, the high energy tap groups may be adapted using an adaptive gain constant a while the low energy tap groups are adapted using an adaptive gain constant aâ, wherein a aâ.
  • Echo Canceller Employing Dual-H Architecture Having Improved Non-Linear Echo Path Detection

    view source
  • US Patent:
    7031459, Apr 18, 2006
  • Filed:
    Nov 8, 2002
  • Appl. No.:
    10/291304
  • Inventors:
    Kenneth P. Laberteaux - South Bend IN, US
  • Assignee:
    Tellabs Operations, Inc. - Naperville IL
  • International Classification:
    H04M 1/00
  • US Classification:
    37940605, 37940608, 37940611
  • Abstract:
    An echo canceller circuit for use in an echo canceller system is set forth that provides sensitive non-linear echo path response detection. The echo canceller circuit comprises a first digital filter having non-adaptive tap coefficients to simulate an echo response occurring during a call. A second digital filter having adaptive tap coefficients to simulate an echo response occurring during the call is also used. The adaptive tap coefficients of the second digital filter are updated over the duration of the call. A coefficient transfer controller is disposed in the echo canceller circuit to transfer the adaptive tap coefficients of the second digital filter to replace the tap coefficients of the first digital filter when a set of one or more transfer conditions is met. A non-linear echo path response detector is provided. The non-linear echo path detector is responsive to one or more parameters of the first and second digital filters to detect a non-linear echo path condition.
  • System And Method Of Collision Avoidance Using Intelligent Navigation

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  • US Patent:
    7167799, Jan 23, 2007
  • Filed:
    Mar 23, 2006
  • Appl. No.:
    11/387414
  • Inventors:
    Dmitri A. Dolgov - Ann Arbor MI, US
    Kenneth P. Laberteaux - Ann Arbor MI, US
  • Assignee:
    Toyota Technical Center USA, Inc. - Ann Arbor MI
  • International Classification:
    G01C 23/00
    G06F 19/00
  • US Classification:
    701301, 701213
  • Abstract:
    A system and method of intelligent navigation with collision avoidance for a vehicle is provided. The system includes a global positioning system and a vehicle navigation means in communication with the global positioning system. The system also includes a centrally located processor in communication with the navigation means, and an information database associated with the controller, for identifying a location of a first vehicle and a second vehicle. The system further includes an alert means for transmitting an alert message to the vehicle operator regarding a collision with a second vehicle. The method includes the steps of determining a geographic location of a first vehicle and a second vehicle within an environment using the global positioning system on the first vehicle and the global positioning system on the second vehicle, and modeling a collision avoidance domain of the environment of the first vehicle as a discrete state space Markov Decision Process. The methodology scales down the model of the collision avoidance domain, and determines an optimal value function and control policy that solves the scaled down collision avoidance domain. The methodology extracts a basis function from the optimal value function, scales up the extracted basis function to represent the unscaled domain, and determines an approximate solution to the control policy by solving the rescaled domain using the scaled up basis function.
  • Echo Canceller Employing Dual-H Architecture Having Variable Adaptive Gain Settings

    view source
  • US Patent:
    7200222, Apr 3, 2007
  • Filed:
    Jun 23, 2003
  • Appl. No.:
    10/602949
  • Inventors:
    Kenneth P. Laberteaux - South Bend IN, US
    Richard C. Younce - Wakarush IN, US
    Bruce E. Dunne - Naperville IL, US
    David S. Farrell - Lisle IL, US
  • Assignee:
    Tellabs Operations, Inc. - Naperville IL
  • International Classification:
    H04M 1/00
  • US Classification:
    37940606, 37940609, 37940608, 37940605
  • Abstract:
    An echo canceller circuit for use in an echo canceller system is set forth that provides sensitive double-talk detection. The echo canceller circuit comprises a second digital filter having adaptive tap coefficients to simulate an echo response occurring during the call. The adaptive tap coefficients of the second digital filter are updated over the duration of the call using a Least Mean Squares process having an adaptive gain a. A channel condition detector is used to detect channel conditions during the call. The channel condition detector is responsive to detected channel conditions for changing the adaptive gain a during the call. For example, the channel condition detector may detect the presence of a double-talk condition and set the adaptive gain a to zero. Similarly, the channel condition detector may detect the occurrence of a high background noise condition and set the adaptive gain a to a level less than 1 that is dependent on the detected level of the background noise. Other similar channel conditions and corresponding adaptive gain settings may likewise be utilized.
  • Echo Canceller Employing Dual-H Architecture Having Split Adaptive Gain Settings

    view source
  • US Patent:
    7403610, Jul 22, 2008
  • Filed:
    Feb 17, 2004
  • Appl. No.:
    10/779830
  • Inventors:
    Richard C. Younce - Wakarush IN, US
    Kenneth P. Laberteaux - South Bend IN, US
  • Assignee:
    Tellabs Operations, Inc. - Naperville IL
  • International Classification:
    H04M 9/08
  • US Classification:
    37940601, 37940606
  • Abstract:
    An echo canceller circuit is set forth. The echo canceller circuit includes a digital filter having adaptive tap coefficients to simulate an echo response occurring during a call. The adaptive tap coefficients are updated during the call using a Means Squares process. A tap energy detector is also employed. The tap energy detector identifies and divides groups of taps having high energy from groups of taps having low energy. The high energy tap groups are smaller in number than the low energy tap groups. The high energy tap groups are adapted separately from the low energy tap groups using the Least Squares process. Still further, the high energy tap groups may be adapted using an adaptive gain constant α while the low energy tap groups are adapted using an adaptive gain constant α′, wherein α>α′.

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