Detecting content based defects in a video stream

Details Detecting content based defects in a video stream Detecting content based defects in a video stream

2005-06-14

2005-06-14

Kostak, Victor R. (Department: 2611)

Television

Monitoring, testing, or measuring

C348S700000, C348S184000, C348S192000

Reexamination Certificate

active

06906743

ABSTRACT:
A method of detecting content based defects in previously compressed video streams decodes a video channel from the compressed video streams and performs a match on a frame/field basis between each frame/field of the video channel and a black frame/field and/or a previous frame/field to detect missing frames/fields and/or duplicate frames/fields. The number of consecutive missing and/or duplicate frames/fields are counted and an alarm signal is generated when the count exceeds a specified value. A beat pattern detector may be used to differentiate between 3/2 pulldown and other duplicate frame/field content errors, and a graphics detector may be used to differentiate between lettering/graphics stills and other duplicate frame/field content errors.

REFERENCES:
patent: 4430671 (1984-02-01), Tamer
patent: 5621454 (1997-04-01), Ellis et al.
patent: 5757435 (1998-05-01), Wells
patent: 6041142 (2000-03-01), Rao et al.
patent: 6075552 (2000-06-01), Hasegawa
patent: 6100941 (2000-08-01), Dimitrova et al.
patent: 6175386 (2001-01-01), Van De Schaar-Mitrea et al.
patent: 0 838 960 (1998-04-01), None
patent: 06 268975 (1994-09-01), None
patent: 9-266567 (1997-10-01), None
Wu, Chao-Hui; Koh, Liang; Liu, Ming T. “a Synchronization and Compensation Protocal for Multimedia Communication Systems”, Network Protocals, 1995. Proceedings., 1995 International Conference at Tokyo, Japan, Nov. 7, 1995, Los Alamitos, CA, US, IEEE Comput. Soc, US.

Affiliated with

Also associated with

Rating

Detecting content based defects in a video stream does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Detecting content based defects in a video stream, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detecting content based defects in a video stream will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3470427