3:2 pulldown detection

Television – Image signal processing circuitry specific to television – Motion dependent key signal generation or scene change...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C348S441000, C348S449000, C348S558000

Reexamination Certificate

active

08068181

ABSTRACT:
Field-based detection of 3:2 pulldown in a sequence of digital video fields using a programmable graphics processor is described. The detection is performed using a threshold value to determine equivalence between a pair of fields of digital video data. Furthermore, additional threshold values may be used to control switching into a mode where duplicated fields of digital video data are identified and not displayed and out of the mode where duplicated fields of digital video data are identified and not displayed. Look ahead can be used to detect when to switch into or out of the mode where duplicated fields of digital video data are identified and not displayed, reducing the occurrence of visual artifacts.

REFERENCES:
patent: 4982280 (1991-01-01), Lyon et al.
patent: 5461420 (1995-10-01), Yonemitsu et al.
patent: 5852473 (1998-12-01), Horne et al.
patent: 6014182 (2000-01-01), Swartz
patent: 6784921 (2004-08-01), Lim, II
patent: 6891571 (2005-05-01), Shin et al.
patent: 6906743 (2005-06-01), Maurer
patent: 7015909 (2006-03-01), Morgan, III et al.
patent: 7142246 (2006-11-01), Chen et al.
patent: 7283174 (2007-10-01), Tokuhara et al.
patent: 2004/0119887 (2004-06-01), Franzen
patent: 2004/0189651 (2004-09-01), Zatz et al.
patent: 2008/0094506 (2008-04-01), Maclnnis et al.
patent: WO 02/089477 (2002-11-01), None
Office Action in U.S. Appl. No. 10/417,018 mailed on Apr. 8, 2009.
Office Action, U.S. Appl. No. 11/949,001, dated May 28, 2009.
Ramer, Dan. “What the Heck is 3:2 Pulldown,” Feb. 3, 2003, available at http://www.dvdfile.com
ews/special—report/production—a—z/3—2—pulldown.html.
Office Action, U.S. Appl. No. 11/949,001, dated Apr. 14, 2010.
Office Action, U.S. Appl. No. 11/948,991, dated Nov. 23, 2011.
Office Action, U.S. Appl. No. 11/948,996, dated Nov. 26, 2011.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

3:2 pulldown detection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with 3:2 pulldown detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 3:2 pulldown detection will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4256206

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.