Patents Represented by Attorney Hartman Patents PLLC

Find this attorney in the Justia Lawyer Directory

  • Display assemblies and computer programs and methods for defect compensation
    Patent number: 8164598
    Abstract: The range of embodiments includes systems, methods, and apparatus for defect compensation that may be applied to displays having multiple imaging layers, such as high dynamic range displays, and/or to stereoscopic displays, such as autostereoscopic displays.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: April 24, 2012
    Assignee: Barco N.V.
    Inventor: Tom Kimpe
  • Systems, methods, and apparatus for phase noise mitigation
    Patent number: 7668269
    Abstract: A method of signal processing according to an embodiment includes estimating a response of a transmission channel during a symbol period. Based on an estimated response of the transmission channel, components of a model of a phase noise process during the symbol period are estimated. Based on the phase noise process model, an estimate of a symbol received during the symbol period is obtained.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: February 23, 2010
    Assignee: ATI Technologies, Inc.
    Inventors: Xiaoqiang Ma, Azzedine Touzni
  • Systems, methods, and apparatus for noise reduction
    Patent number: 7663701
    Abstract: Systems, methods, and apparatus for noise reduction include noise estimation from blanking interval information. Such systems, methods, and apparatus may also include temporal filtering, scene change detection, inverse telecine, and/or DC preservation.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: February 16, 2010
    Assignee: ATI Technologies, Inc.
    Inventors: Diego P. de Garrido, Paul Gehman, Jon McAllister
  • Methods, apparatus, and devices for noise reduction
    Patent number: 7639849
    Abstract: Embodiments include applying a compensation to an image signal based on nonuniformity of a display device. The compensation is based on information about variations in light-output response among elements of the display device. The compensation is also modified based on a characteristic of a desired use of the display.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: December 29, 2009
    Assignee: Barco N.V.
    Inventors: Tom Kimpe, Paul Matthijs
  • System, method, and apparatus for multi-level hierarchical Z buffering
    Patent number: 7091971
    Abstract: A secondary representative Z value memory includes a reduced-resolution representation of a primary representative Z value memory. Upon updating of a block of the primary representative Z value memory, one or more corresponding values are calculated for updating the reduced-resolution representation.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: August 15, 2006
    Assignee: ATI Technologies, Inc.
    Inventor: Stephen L. Morein
  • System, method, and apparatus for early culling
    Patent number: 6999076
    Abstract: A method of graphics processing includes determining a non-depth conditional status and an occlusion status of a fragment. Such a method may be used in culling occluded fragments before expending resources such as processing cycles and memory bus usage. In one example, a scratchpad stores depth values of robust fragments and is used for occlusion testing. Graphics architectures, and methods that include use of representative Z values, are also disclosed.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: February 14, 2006
    Assignee: ATI Technologies, Inc.
    Inventor: Stephen L. Morein
  • Methods, apparatus, and devices for noise reduction
    Patent number: RE43707
    Abstract: Embodiments include applying a compensation to an image signal based on nonuniformity of a display device. The compensation is based on information about variations in light-output response among elements of the display device. The compensation is also modified based on a characteristic of a desired use of the display.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: October 2, 2012
    Assignee: Barco N.V.
    Inventors: Tom Kimpe, Paul Matthijs