Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1992-02-28
1994-01-25
Powell, Mark R.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 27, H04N 964
Patent
active
052820211
ABSTRACT:
A digital color television signal has its chrominance component, which is in the form of color difference signals, resolved into color hue and color saturation signals which are used to address a function memory which provides a pair of correction signals that are supplied to calculator circuits which respectively receive the color hue signal, the color saturation signal and the luminance signal as well as predetermined control signals previously stored which relate to the color sectors adjacent to the color sector in which the color hue signal is located. The calculation circuits respectively supply corrected color hue, color saturation and luminance signals. The color hue signal is additively corrected by a color hue correction signal and the color saturation signal is multiplicatively corrected by a saturation correction signal.
REFERENCES:
patent: 3558806 (1971-01-01), Monaham et al.
patent: 4951127 (1990-08-01), Mehrgardt et al.
John F. Monahan and Robert A. Dischert, "Color Correction Techniques for Television Cameras", Sep. 1969, pp. 696-700, Journal of the SMPTE, vol. 78.
Bachmann Peter
Christmann Mike
Poetsch Dieter
BTS Broadcast Television Systems GmbH
Burgess Glenton
Powell Mark R.
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