Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1986-01-17
1987-03-17
Chin, Tommy P.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 37, 358105, 358167, H04N 521
Patent
active
046512110
ABSTRACT:
A motion detector for detecting interimage motion represented by composite video signals analyzes both the chrominance and luminance components for image motion. Interimage motion represented by the luminance component is determined from interimage signal differences. The interimage signal differences are separated into high and low frequency spectra corresponding to fine and coarse luminance image detail. Selected signal differences from the low frequency spectrum are summed and threshold detected to determine motion in the coarse image detail. The high frequency spectrum of the sample differences are applied to parallel summing circuits which sum different combinations of sample differences in order to discriminate motion signals from non-moving chrominance transitions. The detection signals from the high and low frequency motion detectors are combined to produce a luminance motion signal. Interimage motion represented by the chrominance component is detected by combining selected ones of interimage signal sums. The interimage signal sums are high pass filtered and applied to parallel combining elements which discriminate chrominance motion from vertical luminance transitions.
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Casey Robert F.
Harwood Leopold A.
Roeder Barbara J.
Weckenbrock Hermann J.
Wedam Werner F.
Chin Tommy P.
Herrmann E. P.
Rasmussen P. J.
RCA Corporation
Whitacre E. M.
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