Patents by Inventor Trevor McAlister

Trevor McAlister 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).

  • Patent number: 9513175
    Abstract: An apparatus for spatially correcting an image frame is disclosed. In some embodiments, the apparatus stores a frame of pixel values and scans a multi-pixel correction window across the frame. Spatial correction is performed on pixels within the window at correction positions during the scan. The spatial correction comprises estimating pixel values at value estimation positions based on one or more pixel values within the window for pixels satisfying a logical condition. The value estimation positions correspond to pixel values which do not fall within the window again during the scan. Further disclosed is an apparatus for detecting high-energy radiation, in which integration circuitry is used for integrating charge responsive to radiation photon interaction events. The circuits are controllable in accordance with an exposure control signal to vary an exposure window duration according to an operating parameter of the apparatus.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: December 6, 2016
    Assignee: RADIATION WATCH LIMITED
    Inventors: David Prendergast, Michael Anderson, Paul Downes, William Croydon, Christopher Boyce, Wayne Cranwell, Trevor McAlister, Zhuo Zhhang
  • Publication number: 20160313456
    Abstract: An apparatus for spatially correcting an image frame is disclosed. In some embodiments, the apparatus stores a frame of pixel values and scans a multi-pixel correction window across the frame. Spatial correction is performed on pixels within the window at correction positions during the scan. The spatial correction comprises estimating pixel values at value estimation positions based on one or more pixel values within the window for pixels satisfying a logical condition. The value estimation positions correspond to pixel values which do not fall within the window again during the scan. Further disclosed is an apparatus for detecting high-energy radiation, in which integration circuitry is used for integrating charge responsive to radiation photon interaction events. The circuits are controllable in accordance with an exposure control signal to vary an exposure window duration according to an operating parameter of the apparatus.
    Type: Application
    Filed: June 3, 2016
    Publication date: October 27, 2016
    Inventors: David Prendergast, Michael Anderson, Paul Downes, William Croydon, Christopher Boyce, Wayne Cranwell, Trevor McAlister, Zhuo Zhhang
  • Publication number: 20150083925
    Abstract: An apparatus for spatially correcting an image frame is disclosed. In some embodiments, the apparatus stores a frame of pixel values and scans a multi-pixel correction window across the frame. Spatial correction is performed on pixels within the window at correction positions during the scan. The spatial correction comprises estimating pixel values at value estimation positions based on one or more pixel values within the window for pixels satisfying a logical condition. The value estimation positions correspond to pixel values which do not fall within the window again during the scan. Further disclosed is an apparatus for detecting high-energy radiation, in which integration circuitry is used for integrating charge responsive to radiation photon interaction events. The circuits are controllable in accordance with an exposure control signal to vary an exposure window duration according to an operating parameter of the apparatus.
    Type: Application
    Filed: April 30, 2014
    Publication date: March 26, 2015
    Applicant: RADIATION WATCH LIMITED
    Inventors: David Prendergast, Michael Anderson, Paul Downes, William Croydon, Christopher Boyce, Wayne Cranwell, Trevor McAlister, Zhuo Zhhang
  • Publication number: 20110210262
    Abstract: An apparatus for spatially correcting an image frame is disclosed. In some embodiments, the apparatus stores a frame of pixel values and scans a multi-pixel correction window across the frame. Spatial correction is performed on pixels within the window at correction positions during the scan. The spatial correction comprises estimating pixel values at value estimation positions based on one or more pixel values within the window for pixels satisfying a logical condition. The value estimation positions correspond to pixel values which do not fall within the window again during the scan. Further disclosed is an apparatus for detecting high-energy radiation, in which integration circuitry is used for integrating charge responsive to radiation photon interaction events. The circuits are controllable in accordance with an exposure control signal to vary an exposure window duration according to an operating parameter of the apparatus.
    Type: Application
    Filed: January 22, 2010
    Publication date: September 1, 2011
    Applicant: Radiation Watch Limited
    Inventors: David Prendergast, Michael Anderson, Paul Downes, William Croydon, Christopher Boyce, Wayne Cranwell, Trevor McAlister, Zhuo Zhang