Patents by Inventor Mark Alan Erickson

Mark Alan Erickson 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).

  • Mitigation of interference and crosstalk in communications systems
    Patent number: 7978591
    Abstract: Signals in a multi-channel, impaired communication system are post-processed at the receiver. A triangular matrix Decision Feedback Demodulator (DFD) at the receiver extracts channels without requiring delivery of receiver parameters to the transmitter. Multi-Input Multi-Output (MIMO) processing matrices and DFD parameters are computed by first applying matrix transformations to diagonalize the noise covariance matrix of the multiple channels received at the receiver. QR decompositions (i.e., decompositions into orthogonal and triangular matrices) are then applied to the main channels to obtain triangular channel matrices. The noise-diagonalizing transformations and QR decompositions are then combined to form the MIMO postprocessing matrices and DFD parameters. MIMO postprocessing matrices and DFD parameters are computed from training data and then adapted during live data transmission.
    Type: Grant
    Filed: March 31, 2007
    Date of Patent: July 12, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Mark Alan Erickson, Thorkell Gudmundsson, Ioannis Kanellakopoulos, John Josef Hench
  • Mitigation of Interference and Crosstalk in Communications Systems
    Publication number: 20080239937
    Abstract: Signals in a multi-channel, impaired communication system are post-processed at the receiver. A triangular matrix Decision Feedback Demodulator (DFD) at the receiver extracts channels without requiring delivery of receiver parameters to the transmitter. Multi-Input Multi-Output (MIMO) processing matrices and DFD parameters are computed by first applying matrix transformations to diagonalize the noise covariance matrix of the multiple channels received at the receiver. QR decompositions (i.e., decompositions into orthogonal and triangular matrices) are then applied to the main channels to obtain triangular channel matrices. The noise-diagonalizing transformations and QR decompositions are then combined to form the MIMO postprocessing matrices and DFD parameters. MIMO postprocessing matrices and DFD parameters are computed from training data and then adapted during live data transmission.
    Type: Application
    Filed: March 31, 2007
    Publication date: October 2, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Mark Alan Erickson, Thorkell Gudmundsson, Ioannis Kanellakopoulos, John Josef Hench
  • Method and apparatus for cooperative diagnosis of impairments and mitigation of disturbers in communication systems
    Patent number: 6978015
    Abstract: A method that sends upstream a collection of data samples measured from a DSL line.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: December 20, 2005
    Assignee: Tokyo Electron Limited
    Inventors: Mark Alan Erickson, Ioannis Kanellakopoulos, John Josef Hench, Sunil C. Shah, James W. Waite, Michail Tsatsanis, Gurcan Aral
  • Method and apparatus for characterization of disturbers in communication systems
    Patent number: 6970415
    Abstract: A method and apparatus for identification of interference sources are disclosed.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: November 29, 2005
    Assignee: Tokyo Electron Limited
    Inventors: Cecilia Gabriela Galarza, Michail Tsatsanis, Mark Alan Erickson, Ioannis Kanellakopoulos, James W. Waite, Ming Gu, Sunil C. Shah, Daniel Joseph Hernandez, Thomas E. Paré, Jr., Norman Man Leung Yuen
  • Method and apparatus for mitigation of disturbers in communication systems
    Patent number: 6834109
    Abstract: The present invention includes a method and system for compensating for cross-talk interference in communication systems. The method includes estimation of the interfering signals. Further, the method includes performing a compensation operation on at least one interfering signal.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: December 21, 2004
    Assignee: Tokyo Electron Limited
    Inventors: Thomas E. Paré, Jr., Michail Tsatsanis, Ioannis Kanellakopoulos, Mark Alan Erickson, Cecilia Gabriela Galarza, James W. Waite, Daniel Joseph Hernandez, Sunil C. Shah, Ming Gu, Norman Man Leung Yuen, Heberly Rosario, Di Lin, Fernando Lopez-de-Victoria
  • Method and system for design and implementation of fixed-point filters for control and signal processing
    Patent number: 6711598
    Abstract: A method and system is disclosed for design and implementation of fixed-point filters from floating-point filters. A design sequence for designing a fixed-point filter for a system is selected. A low-order floating-point filter and a first set of parameters associated with the low-order floating-point filter components are then selected. One or more parameters of the first set of parameters is then iteratively modified to obtain a set of modified parameters, until a plurality of performance characteristics calculated using the first set of parameters meets a performance objective for the fixed-point filter for the system.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: March 23, 2004
    Assignee: Tokyo Electron Limited
    Inventors: Thomas E. Paré, Jr., Daniel Joseph Hernandez, Cecilia Gabriela Galarza, Mark Alan Erickson, Sunil C. Shah