Television – Image signal processing circuitry specific to television – Motion vector generation
Patent
1994-06-07
1996-05-21
Chin, Tommy P.
Television
Image signal processing circuitry specific to television
Motion vector generation
348700, 348411, 348415, 348416, 348405, H04N 728
Patent
active
055194567
ABSTRACT:
A motion detecting circuit and a noise reducing circuit of high reliability and independent of the magnitude of motion, presence/absence of noise, and magnitude of the noise. The motion detecting circuit includes a subtractor 14 which receives as inputs, an input video signal VS.sub.i from an input terminal 10 and a delayed video signal VS.sub.d delayed by one picture unit (one frame in the case of the NTSC format) from a frame memory 12. The difference between the two signals VS.sub.i and VS.sub.d is taken and a difference signal e is output for each pixel of a video display. A motion determination circuit 16 is provided, having: a difference polarity determination unit which determines the polarity of difference e as input from a difference generating unit 15 for each pixel and its adjacent pixels; a difference value determination unit which determines the magnitude of difference e as input from difference generating unit 15 for each pixel and its adjacent pixels; and a motion determination unit which determines whether the pixel is contained in the motion picture region based on the results of the determination of the difference polarity determination unit and the difference value determination unit; and a 1-bit motion determination signal MC representing the results of the determination of the motion determination unit is output.
REFERENCES:
patent: 5051826 (1991-09-01), Ishii et al.
patent: 5081532 (1992-01-01), Rabii
patent: 5166788 (1992-11-01), Lee
patent: 5173770 (1992-12-01), Kondo et al.
patent: 5237413 (1993-08-01), Israelsen et al.
patent: 5365281 (1994-11-01), Ko et al.
Chin Tommy P.
Donaldson Richard L.
Hiller William E.
Rao Anand S.
Texas Instruments Incorporated
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