Television – Image signal processing circuitry specific to television – Motion dependent key signal generation or scene change...
Patent
1997-09-30
1999-12-28
Britton, Howard
Television
Image signal processing circuitry specific to television
Motion dependent key signal generation or scene change...
348407, H04N 521
Patent
active
060088664
ABSTRACT:
The invention provides an edge detection circuit and a motion processing circuit which can prevent, upon motion detection between frames, erroneous detection at an edge portion, particularly a moving edge portion. A first edge detection section detects an edge of a pattern of an image provided by a first one of frames of a video signal and forwards a first edge detection signal. A second edge detection section detects the edge of the pattern of an image provided by a second one of the frames of the video signal at a time different from that of the first frame and forwards a second edge detection signal. An edge motion discrimination section receives the first and second edge detection signals and discriminates presence of absence of motion of the edge between the first and second frames based on the first and second edge detection signals. Consequently, any edge portion which exhibits motion between frames can be detected correctly.
REFERENCES:
patent: 4677483 (1987-06-01), Dischert
patent: 5128754 (1992-07-01), Dhein
patent: 5311305 (1994-05-01), Mahadevan
patent: 5886744 (1999-03-01), Hannah
Britton Howard
NEC Corporation
LandOfFree
Video signal edge detection circuit and motion processing circui does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Video signal edge detection circuit and motion processing circui, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video signal edge detection circuit and motion processing circui will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2386045