| 摘要 |
<p>A digital video tape recorder operates in either a standard mode or a long play mode. In the long play mode, the tape speed is reduced so that longer recordings may be made than in the standard mode. In order to overcome the problem of crosstalk between tracks on the tape, which arises if the tape is merely slowed, video signals to be recorded are compressed by a factor corresponding to the speed reduction of the tape and also, the rotational speed of the head drum (100) is reduced by the same ratio as the tape speed. As a result, the widths of the tracks on the tape are the same in both the standard and long play modes. <IMAGE></p> |
