Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1988-12-20
1991-08-27
Peng, John K.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358141, 358 12, H04N 712, H04N 704, H04N 1106
Patent
active
050438107
ABSTRACT:
A transmitting section of the system according to the invention has transmitting section signal paths for at least three classes of motion, each with a preprocessing circuit (143, 145 and 147) which are provided with means for individually sampling. These sampling means sample in accordance with separate sampling patterns so that each preprocessing circuit (143, 145 or 147) supplies a video signal which is suitable for a display with an optimum distribution of temporal and/or spatial resolution for the associated class of motion. Dependent on the class of motion determined, one of the preprocessing circuits (143, 145 or 147) is coupled to a channel (170). The video signal to be supplied to the channel (170) is therefore a video signal suitable for a display with an optimum distribution of temporal and/or spatial resolution for the given class of motion (FIG. 1A). A high-definition receiving section of the system according to the invention also has at least three receiving section signal paths comprising a postprocessing circuit (43, 45 and 47) which decodes a received video signl in accordance with a method associated with the relevant postprocessing circuit (43, 45 or 47). The correct postprocessing circuit (43, 45 or 47) is selected in accordance with the class of motion, so that in the receiving section of the system according to the invention a display with an increasing spatial resolution can be achieved in the case of a decreasing motion (FIG. 1B).
REFERENCES:
patent: 4765458 (1988-05-01), Hirano et al.
patent: 4785348 (1988-11-01), Fonsalas et al.
patent: 4941045 (1990-07-01), Birch
patent: 4963965 (1990-10-01), Haghiri et al.
patent: 4972259 (1990-11-01), Motoe et al.
patent: 4982280 (1991-01-01), Lyon et al.
Begas Henk W. A.
Trew Timothy I. P.
Van Der Meer Jan
Vreeswijk Franciscus W. P.
Marion Michael E.
Peng John K.
U.S. Philips Corporation
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