| 摘要 |
<p>PURPOSE:To decide a sure intermusic by traveling a tape in a high speed heading state, counting the times of non-signal and signal therein and holding the counting value of the non-signal time until the continuous time in signalizing reaches more than a fixed value. CONSTITUTION:A tape is traveled in a high speed heading state. In a signal time, first, a 2nd counting means 33 counts its continuous time by the output of a signal detecting means 31 and when reaching a fixed value tau2, a 2nd control means 36 decides to be intermusic and the 1st counting means 32 counting non signal time is cleared. When non-signal becomes, the means 32 counts the non-signal time by means 31, 36 and when reaching a fixed value tau1 an intermusic deciding means 37 decides to be intermusic. When a non-signal pulse type noise comes in, then, the means 33 counts the signal time meantime, but if the counting value does not reach tau2 the means 32 is not cleared and after finishing the noise the means 32 counts by continuing the non-signal time. A heading function can thus be realized surely even if there is a noise.</p> |
