| 摘要 |
A turntable assembly for helically threading tape from a video cassette around a video scanner, for simultaneously threading the tape past a plurality of longitudinal magnetic heads, and for engaging the tape to a capstan drive assembly. The turntable comprises an annular ring that surrounds the scanner and longitudinal heads and provides a platform for rigidly supporting a plurality of guide posts and a pinch roller, the guide posts threading the tape around the scanner and the pinch roller engaging the tape to the capstan drive assembly. The rotational axis of the scanner is tilted relative to the cassette so that the plane of the cassette is coplanar with the entry angle of the scanner and the rotational axis of the turntable ring is tilted relative to the rotational axis of the scanner so that the plane of the ring is coplanar with the exit angle of the scanner. The turntable rotates through an angle which is greater than 360 DEG and means are provided for decelerating the turntable as it reaches the ends of its rotational travel.
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