Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1980-10-16
1983-03-08
Faber, Alan
Facsimile and static presentation processing
Facsimile
Recording apparatus
360 381, 358336, H04N 576
Patent
active
043762905
ABSTRACT:
In apparatus for processing color video information composed of a color video signal having luminance and chrominance components and a respective identifying signal which identifies a phase of the chrominance component, for example, by indicating the frame, field and/or line of which the respective color video signal is a part; the color video signal and respective identifying signal are temporarily stored in a memory and, when the color video signal and the respective identifying signal are simultaneously read out of the memory, a comparison is made between the read-out identifying signal and a corresponding reference or read request signal, and at least the phase of the chrominance component of the read-out color video signal is controlled on the basis of such comparison. In the case where a line of the read-out color video signal is indicated by its respective identifying signal to be of a field which is different from the read request field defined by the then occurring reference or read request signal so that it would be spatially displaced from the corresponding line of the read request field, the value of at least the luminance component in the read-out line is replaced by an interpolated value derived from values of the luminance component in the lines adjacent the read-out line. When a PAL color video signal is being processed, absolute values of color difference signals are derived, for certain sampling points where such color difference signals do not appear, by interpolation of the values for such color difference signals from adjacent sampling points.
REFERENCES:
patent: 3890638 (1975-06-01), Bargen
patent: 3921132 (1975-11-01), Baldwin
patent: 4122489 (1978-10-01), Bolger
Eslinger Lewis H.
Faber Alan
Sinderbrand Alvin
Sony Corporation
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