Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1993-01-25
1998-04-28
Faile, Andrew
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386 27, H01N 576
Patent
active
057456356
ABSTRACT:
A video signal recording system is disclosed which includes a circuit for generating a control signal representative of the level of the high-frequency portion of a full-bandwidth luminance signal. An adaptive deemphasis circuit reduces the level of the high-frequency portion of the luminance signal in response to the control signal. A folding circuit folds the high-frequency portion of the deemphasized luminance signal into the low-frequency portion. The folded deemphasized luminance is combined with the control signal and recorded on the video tape. A video signal playback system is disclosed which includes a circuit for separating the previously recorded control signal from the previously recorded folded deemphasized luminance signal. An unfolding circuit unfolds the played back luminance signal to produce a wide bandwidth deemphasized luminance signal. An adaptive reemphasis circuit boosts the level of the high-frequency portion of the unfolded luminance signal in response to the separated control signal.
REFERENCES:
patent: 4318126 (1982-03-01), Sassler
patent: 4831463 (1989-05-01), Faroudja
patent: 5113262 (1992-05-01), Strolle et al.
Schnitzler Raymond A.
Strolle Christopher H.
Bushnell Esq. Robert E.
Faile Andrew
Samsung Electronics Co,. Ltd.
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