Television – Image signal processing circuitry specific to television – Sweep expansion or reduction
Patent
1993-01-29
1995-08-15
Kostak, Victor R.
Television
Image signal processing circuitry specific to television
Sweep expansion or reduction
348581, H04N 5262
Patent
active
054424100
ABSTRACT:
A video cassette recorder has a video screen zooming function, capable of zooming an optional region of one of plural still pictures sequentially displayed on a screen, as one picture. A digital signal processing unit converts composite video signals into digital video signals and a first memory unit stores the digital video signals by frames. A zoom signal processing unit zooms only digital video signals corresponding to a predetermined zoom region from the digital video signals so as to reconfigure them as digital video signals corresponding to one frame. A second memory unit stores the zoomed digital video signals by frames. A first switch selects the digital video signals from the first memory unit in a stop mode or digital video signals from the second memory unit in a zoom mode. Under a control of a control signal generating unit, an RGB matrix circuit reconfigures the digital video signals from the first switch unit as R, G and B color analog signals, and a second switch selects and outputs original composite video signals in a playback mode and outputs signals from the RGB matrix circuit in the stop mode or the zoom mode, under control of the control signal generating unit.
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Goldstar Co. Ltd.
Kostak Victor R.
Miller John W.
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