| 摘要 |
PURPOSE:To prevent the occurrence of outrunning of address by detecting the reading/writing address difference of buffer memory of a reproducing circuit of VTR and controlling the jumping of reading address at the time of reproducing at speed of (1+ or -alpha) times. CONSTITUTION:Difference Adj of addresses from the read address write address generating circuits 15, 13 of a buffer memory 14 of plural, (n) etc. fields is detected by a comparator circuit 18. At the time of (1+alpha) times reproducing, when read address is [(n-1)+alpha<Adj=n] field or [(n-alpha)<Adj<n] field, K=1, 2 read addresses are jumped and advanced. Similarly, at the time of (1-alpha) times reproducing, when [0<Adj<(1-alpha)] or (0<Adj<alpha) field, K field read address is returned, and outrunning of write address by read address is prevented, and discontinuous picture image due to outrunning does not occur.
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