| 摘要 |
PURPOSE:To reproduce a high-quanlity still picture, by reproducing video signals of the same field from a disc information recording medium where video signals are recorded. CONSTITUTION:For a disc information recording medium where four-field components of video signals are recorded for every one rotation, reproducing heads P1- P3 and one recording head R are provided, an heads P1 and P3 and heads P2 and R face to each other, respectively. The video signal reproduced with a reproducing stylus 3 by the change of an electrostatic capacity is applied to the head R through a preamplifier 4 and is recorded onto a magnetic coating face 2. Meanwhile, the vertical synchronizing signal after FM demodulation is separated and extracted and is applied to FFs 6 and 7, and respective output signals are used as the switching signal of a changeover switch 8 and are switched to fixed terminals (a), (b), (c), and (d) for every 1/4 rotation. Thus, video signals of the same field are outputted repeatedly by repeating the operation where the signal is reproduced from one recorded field and is outputted from an output terminal 12. |
