Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1988-12-23
1990-08-28
Chin, Tommy P.
Facsimile and static presentation processing
Static presentation processing
Attribute control
H04N 978
Patent
active
049530097
ABSTRACT:
A signal separator includes an A/D converter which samples a composite color television signal including a luminance signal component and a color difference signal component at a sampling frequency four times a frequency of a chrominance subcarrier and outputs a digital signal. A timing signal generator receives the digital signal and generates at least first and second timing signals. A subsampling circuit subsamples the digital signal in accordance with the first timing signal and outputs a subsampled signal. A frame delaying circuit delays the subsampled signal by one frame and outputs a delayed signal. The signal separator further includes first interpolation circuit which interpolates the delayed signal in accordance with the second timing signal and outputs a first interpolated signal. A first separator separates the color difference signal component from the composite color television signal by mixing the first interpolated signal and the digital signal. A second interpolation circuit interpolates the color difference signal component by a predetermined signal and outputs a second interpolated signal. A second separator separates the luminance signal component by mixing the first interpolated signal and the second interpolated signal.
REFERENCES:
patent: 4218700 (1980-08-01), Kashigi
patent: 4456922 (1984-06-01), Balaban
patent: 4470069 (1984-09-01), Lewis, Jr.
patent: 4644389 (1987-02-01), Nakagawa
patent: 4843457 (1989-06-01), Yamagata
Translation, Jun. 14, 1989, 2,338,777 German Patent Office, pp. 1-4.
SMPTE Journal, "A Motion-Adaptive High-Definition Converter for NTSC Color TV Signals"; Masahiko Achiha et al; May 1984.
Hoshino Kiyoshi
Yamada Masahiro
Yasuki Seijiro
Chin Tommy P.
Kabushiki Kaisha Toshiba
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