Frequency folding and unfolding circuits of a video signal recor

Details Frequency folding and unfolding circuits of a video signal recor Frequency folding and unfolding circuits of a video signal recor

1994-10-20

1996-09-10

Tran, Thai Q.

Facsimile and static presentation processing

Facsimile

Recording apparatus

348427, H04N 979

Patent

active

055550967

ABSTRACT:
Folding and unfolding circuits of a video signal in a video recording/reproducing apparatus for recording a video signal of a full bandwidth including a chroma signal and a luma signal on a recording medium having an effective limited bandwidth and reproducing the recorded luma signal and chroma signal into the video signal of a full bandwidth, use a frequency folding technique by means of sub-Nyquist sampling. A region of a high-frequency signal is folded onto a region of a limited low-frequency luma signal. A remaining high-frequency luma signal is folded on the remaining region of the limited low-frequency luma signal, to thereby record the luma signals according to a field period. The full-bandwidth video signal is then reproduced by band-compensation during reproducing. Thus, crosstalk between channels is decreased to thereby obtain a clear picture of high resolution.

REFERENCES:
patent: 4831463 (1989-05-01), Faroudja
patent: 4989090 (1991-01-01), Campbell et al.
patent: 5031030 (1991-07-01), Hurst, Jr.
patent: 5063457 (1991-11-01), Ishikawa et al.
patent: 5113262 (1992-05-01), Strolle et al.
patent: 5150210 (1992-09-01), Hoshi et al.
patent: 5187590 (1993-02-01), Kim
patent: 5191434 (1993-03-01), Kim
patent: 5229892 (1993-07-01), Inoue et al.

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