Patents by Inventor G. Wredenhagen

G. Wredenhagen 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 motion adaptive deinterlacing
    Patent number: 7724304
    Abstract: An adaptive filter calculates a target pixel from an interlaced video signal. The video signal comprises a plurality of frames, each of which comprises an even and an odd field. The filter comprises a quantized motion calculator and a filter selector. The quantized motion calculator estimates an amount of motion about the target pixel. The filter selector selects a filter in accordance with the estimated amount of motion. The filter applies a first weighting factor to a plurality of current field pixels and a second weighting factor to a plurality of previous field pixels for creating the target pixel.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: May 25, 2010
    Assignee: Pixelworks, Inc.
    Inventors: Finn G. Wredenhagen, Gary Cheng, Soo Jang, Lance Greggain
  • A METHOD AND APPARATUS FOR MOTION ADAPTIVE DEINTERLACING
    Publication number: 20060238650
    Abstract: An adaptive filter calculates a target pixel from an interlaced video signal. The video signal comprises a plurality of frames, each of which comprises an even and an odd field. The filter comprises a quantized motion calculator and a filter selector. The quantized motion calculator estimates an amount of motion about the target pixel. The filter selector selects a filter in accordance with the estimated amount of motion. The filter applies a first weighting factor to a plurality of current field pixels and a second weighting factor to a plurality of previous field pixels for creating the target pixel.
    Type: Application
    Filed: July 10, 2006
    Publication date: October 26, 2006
    Applicant: JALDI SEMICONDUCTOR CORP.
    Inventors: Finn G. Wredenhagen, Gary Cheng, Soo Jang, Lance Greggain
  • System and method for reducing noise in images
    Publication number: 20050243205
    Abstract: A method is provided for selecting a filter for interpolating a target pixel for reducing noise in an image. The method comprises the following steps. A plurality of pixels along a predetermined contour is compared with a plurality of predefined patterns. The patterns represent visually significant patterns possible along said contour. A filter is selected from a predefined set of filters in accordance with the results of the comparison.
    Type: Application
    Filed: May 16, 2005
    Publication date: November 3, 2005
    Applicant: Jaldi Semiconductor Corp.
    Inventors: G. Wredenhagen, Andrew Elias
  • Method and apparatus for motion adaptive deinterlacing
    Publication number: 20050099538
    Abstract: An adaptive filter calculates a target pixel from an interlaced video signal. The video signal comprises a plurality of frames, each of which comprises an even and an odd field. The filter comprises a quantized motion calculator and a filter selector. The quantized motion calculator estimates an amount of motion about the target pixel. The filter selector selects a filter in accordance with the estimated amount of motion. The filter applies a first weighting factor to a plurality of current field pixels and a second weighting factor to a plurality of previous field pixels for creating the target pixel.
    Type: Application
    Filed: April 28, 2004
    Publication date: May 12, 2005
    Inventors: G. Wredenhagen, Gary Cheng, Soo Jang, Lance Greggain
  • Method and apparatus for motion adaptive deinterlacing
    Patent number: 6757022
    Abstract: An adaptive filter calculates a target pixel from an interlaced video signal. The video signal comprises a plurality of frames, each of which comprise an even and an odd field. The filter comprises a quantized motion calculator and a filter selector. The quantized motion calculator estimates an amount of motion about the target pixel. The filter selector selects a filter in accordance with the estimated amount of motion. The filter applies a first weighting factor to a plurality of current field pixels and a second weighting factor to a plurality of previous field pixels for creating the target pixel.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: June 29, 2004
    Assignee: Pixelworks, Inc.
    Inventors: Finn G. Wredenhagen, Gary Cheng, Soo Jang, Lance Greggain
  • Method and apparatus for motion adaptive deinterlacing
    Publication number: 20020054236
    Abstract: An adaptive filter calculates a target pixel from an interlaced video signal. The video signal comprises a plurality of frames, each of which comprise an even and an odd field. The filter comprises a quantized motion calculator and a filter selector. The quantized motion calculator estimates an amount of motion about the target pixel. The filter selector selects a filter in accordance with the estimated amount of motion. The filter applies a first weighting factor to a plurality of current field pixels and a second weighting factor to a plurality of previous field pixels for creating the target pixel.
    Type: Application
    Filed: September 10, 2001
    Publication date: May 9, 2002
    Inventors: Finn G. Wredenhagen, Gary Cheng, Soo Jang, Lance Greggain