Television – Image signal processing circuitry specific to television – Motion dependent key signal generation or scene change...
Patent
1994-09-08
1997-09-16
Britton, Howard W.
Television
Image signal processing circuitry specific to television
Motion dependent key signal generation or scene change...
348384, 348390, 348400, 348401, 348402, 348407, 348409, 348699, 348701, 382232, 382236, 382238, H04N 732
Patent
active
056686099
ABSTRACT:
A motion detector and improved key signal interpolator using the same inputs a video signal to both a frame and a field based interpolator to produce both frame and field interpolated signals. The frame and field interpolated signals are input to a mixer. The frame interpolated signal also is input to a frame delay circuit, the output of which is subtracted from input to produce a motion signal. The motion signal is converted by an absolute value/lookup table into a mix signal that is also input to the mixer. The mix signal determines which interpolated signal at the input is passed to the output, the field interpolated signal being passed when motion is detected and the frame interpolation signal being passed when motion is not detected. A temporally filtered frame interpolation signal may be produced from the output and input of the frame delay circuit, and the mix signal in response to a temporal filter coefficient input to the absolute value/lookup table mixes the temporally filtered frame and frame interpolated signals to produce a final frame interpolated signal that in turn is mixed with the field interpolated signal to produce the output signal.
REFERENCES:
patent: 4688089 (1987-08-01), Uhlenkamp
patent: 4730217 (1988-03-01), Tonge et al.
patent: 4731648 (1988-03-01), Bernhard et al.
patent: 4740842 (1988-04-01), Annegarn et al.
patent: 4768092 (1988-08-01), Ishikawa
patent: 4937667 (1990-06-01), Choquet et al.
patent: 4941045 (1990-07-01), Birch
patent: 4967271 (1990-10-01), Campbell et al.
patent: 5206723 (1993-04-01), Parke
patent: 5212548 (1993-05-01), De Haan et al.
patent: 5410356 (1995-04-01), Kikuchi et al.
patent: 5428693 (1995-06-01), Murakami et al.
Chaplin Daniel J.
Dunbar Brion L.
Britton Howard W.
Gray Francis I.
Snow Frank
Tektronix Inc.
LandOfFree
Motion detector and key signal interpolator using same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Motion detector and key signal interpolator using same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motion detector and key signal interpolator using same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-221991