Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1990-01-09
1991-10-08
Chin, Tommy P.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358105, 358166, 358167, H04N 5213
Patent
active
050559206
ABSTRACT:
Color television signals obtained by scanning a still picture are converted into digital video signals and stored in video frame memory for delaying the signals. Undelayed and delayed digital video signals are added together to produce a luminance signal in which the color carrier is suppressed. A circuit for detecting a change of picture provides a start signal after which the first frame of a still picture is stored and is then recycled until there is another picture change. To reduce the effect of recycling, the continuously supplied picture signal is modified by a factor of 1-k, and the recycled picture is modified by the factor k, wherein k varies between 0 and 1 (or 100%) and is a gradually rising function whose rise time extends over a multiplicity, for example 2-4, video frame periods.
REFERENCES:
patent: 4242704 (1980-12-01), Ito
patent: 4549213 (1985-10-01), Illetschko
patent: 4593316 (1986-06-01), Kellar
patent: 4639783 (1987-01-01), Fling
patent: 4639784 (1987-01-01), Fling
patent: 4716462 (1987-12-01), Wargo
Broadcast Engineering, Nov. 1980, pp. 42-49.
Illetschko Gerhard
Noske Reiner
Richter Hans-Peter
BTS Broadcast Television Systems GmbH
Chin Tommy P.
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