Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1988-09-13
1991-02-05
Richardson, Robert L.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358329, H04N 979
Patent
active
049910264
ABSTRACT:
A magnetic recording and reproducing apparatus for eliminating the crosstalk component from an adjacent track of a tape of a VTR and obtaining a high picture quality. Chrominance signals in the base band which are produced by a low frequency conversion chroma signal are supplied to comb-shaped filters which are used in the magnetic recording and reproducing apparatus. The chrominance signals in the base band are obtained by generating carriers synchronized with a burst signal of the low frequency conversion chroma signal including the jitter component upon reproduction and by multiplying the carriers and the low frequency conversion chroma signal. A burst signal portion between the resultant chrominance signals in the base band is applied as a frequency control input signal to an oscillator as the carrier generating source, so that desired carriers are derived. Thus, the frequency fluctuation is eliminated from the converted chrominance signal in the base band and the high picture quality can be realized.
REFERENCES:
patent: 3315028 (1967-04-01), Kool
patent: 4400742 (1983-08-01), Yamamitsu et al.
patent: 4477831 (1984-10-01), Hosoya
Itoh Shigeyuki
Masui Hikaru
Takase Osamu
Watatani Yoshizumi
Hitachi , Ltd.
Richardson Robert L.
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