| 摘要 |
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.
|
