The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2008
Filed:
Jun. 27, 2005
Sanjay R. Pillay, Austin, TX (US);
Brian F. Bounds, Dripping Springs, TX (US);
William Lynn Gallagher, Austin, TX (US);
Sanjay R. Pillay, Austin, TX (US);
Brian F. Bounds, Dripping Springs, TX (US);
William Lynn Gallagher, Austin, TX (US);
Magnum Semiconductor, Inc., Fremont, CA (US);
Abstract
A method of detecting a change in a sequence of video data fields generated from a progressive scan source includes receiving first and second interlaced fields of a corresponding progressive scan frame from a sequence of interlaced fields generated from progressive scan source. Pixel values corresponding to pixel positions of pixel lines of a first parity of the first field are weaved with pixel values corresponding to pixel positions of pixel lines of a second parity of the second field. For each pixel value corresponding to each pixel position of each pixel line of the second field after weaving, a check is performed for the corresponding pixel position for feathering due to motion. A number of detected pixel positions with feathering due to motion is counted and compared against a threshold. A determination is made that the sequence of fields generated from the progressive scan source has not changed when the number of counted pixel positions due to motion is below the threshold and a determining that the sequence of fields generated from the progressive scan source has changed when the number of counted pixel positions due to motion is above the threshold.