Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1991-03-15
1993-06-15
Groody, James J.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358153, H04N 978
Patent
active
052204138
ABSTRACT:
A preprocessing device of a system that can record and reproduce the luminance and chrominance signal separated from a composite digital VTR signal is disclosed.
The luminance/chrominance signal preprocessing device includes an analog/digital converter which samples a NTSC signal inputted as a composite video signal at a certain frequency, and converts the signal sample to a digital signal, a horizontal synchronizing separator that separates the horizontal synchronizing signal from the above NTSC signal, a PLL division that sends a clock signal fixed to the horizontal synchronizing signal outputted from the above horizontal synchronizing separator to the above analog/digital converter, and a luminance and chrominance signal outgoing from the above analog/digital converter is then separated into a luminance signal and a chrominance signal.
As a result, because the present invention is able to convert a NTSC/PAL signal to one suitable for television, the present invention may be utilized for preprocessing digital video signals where comparatibly high resolution is required.
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Groody James J.
Murrell Jeffrey S.
Samsung Electronics Co,. Ltd.
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