Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1984-09-25
1988-02-16
Cardillo, Raymond F.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358330, H04N 981, H04N 980
Patent
active
047258942
ABSTRACT:
A digital conversion system for a color video signal comprising a system which selectively converts an analog composite color video signal and analog primary color video signals to digital signals includes: a matrix circuit (17) which forms a luminance signal and first and second color difference signals from the input analog primary color video signals; and a switching circuit (18) which converts the first and second color difference signals to a sequential color difference signal. A switch (28) selects the luminance signal from the matrix circuit (17) or the input NTSC analog composite color video signal. A first analog to digital converter (41) receives an output from the switch (28); and a second analog to digital converter (42) receives the sequential color difference signal. A digital composite color video signal or a digital luminance signal is obtained from the first analog to digital converter (41), and a digital line sequential color difference signal is obtained from the second analog to digital converter (42). The line sequential chrominance signal can be digitized by a single inexpensive A/D converter which has a slow processing speed, so as to produce an inexpensive digital conversion system which is small.
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Arai Masaaki
Sasaki Takayuki
Cardillo Raymond F.
Sony Corporation
Young Wayne R.
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