| 摘要 |
<p>PURPOSE:To detect any cue signal, by incorporating a CPU in a tape recorder or VTR, etc., and inputting the pattern and frequency of the cue signal, running speed (double speed, reverse speed, etc.) of a tape, etc., as command signals. CONSTITUTION:When the output of a flip-flop 28 reaches the specific value of comparison outputs of the 1st and the 2nd comparators 23 and 24, it means that the frequency of a cue signal to be detected has at least <=5% variation and continuance exceeding a frequency indicated by data D3. When this is inputted to the CPU11 as the cue signal, the CPU11 generates a control signal (tape stop or stand-by completion, etc.) to the 1st output board 13 by said input. The CPU11 outputs a frequency division ratio (m) and data D1, D2, and D3 by command signals from the input board 12, i.e. instructions for a tape speed (double speed instruction), frequency of the cue signal to be detected, running direction of the tape, etc., so a cue signal detecting circuit handles all kinds of cue signals.</p> |
