Patents by Inventor Keith Hammond

Keith Hammond 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 apparatus for resampling a spatially sampled attribute of an image
    Patent number: 9047683
    Abstract: Resampling a spatially sampled attribute of an image, for example up- or down-conversion, in which contributions to a symmetrical FIR resampling filter from positions outside the image—that is to say where the filter aperture extends beyond an image edge—are obtained by copying values from positions inside the image. This can conveniently be done by modifying filter coefficients.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: June 2, 2015
    Assignee: SNELL LIMITED
    Inventor: Keith Hammond
  • METHOD AND APPARATUS FOR RESAMPLING A SPATIALLY SAMPLED ATTRIBUTE OF AN IMAGE
    Publication number: 20130129257
    Abstract: Resampling a spatially sampled attribute of an image, for example up- or down-conversion, in which contributions to a symmetrical FIR resampling filter from positions outside the image—that is to say where the filter aperture extends beyond an image edge—are obtained by copying values from positions inside the image. This can conveniently be done by modifying filter coefficients.
    Type: Application
    Filed: July 11, 2011
    Publication date: May 23, 2013
    Applicant: SNELL LIMITED
    Inventor: Keith Hammond
  • System and method for video processing
    Publication number: 20060221231
    Abstract: A video processing apparatus can receive video at two different rates, which may be High Definition video and Standard Definition Video. The input video is stored and read into a processor at a fixed internal rate for processing at that rate. Processed video is output to a further store from which it can be read at either of the input rates.
    Type: Application
    Filed: March 29, 2005
    Publication date: October 5, 2006
    Inventors: Edward Palgrave-Moore, Keith Hammond
  • System and method for video processing
    Publication number: 20060059218
    Abstract: Method and apparatus for decimating or sub-sampling image data which uses fixed delay intervals to accumulate a weighted sum of input samples. The accumulated sum is output at selected intervals, the interval determining the degree of decimation. The apparatus can take the form of a Finite Impulse Response (FIR) decimation filter. Decimation can be horizontal, vertical or temporal, and the decimation factor can be made non-integral.
    Type: Application
    Filed: September 9, 2005
    Publication date: March 16, 2006
    Inventors: Keith Hammond, Martin Weston