| 摘要 |
<p>PURPOSE:To reduce the probability of mischeck of a control signal as low as possible by forming the control signal to be recorded in a subrecording area as an extremely simple signal. CONSTITUTION:When a narrow pulse indicating an FR blank search is supplied to a terminal 216, the pulse is supplied to a circuit 228 as a signal T'4 through an AND gate 225 and the titled recorder is turned to an FR mode, and when a head 5 reaches a point G ( 56), the output of a detecting circuit 201 is turned to H. The output of an AND gate 219 is also turned to H and a mono-stable multivibrator 203 to be triggered at the rise of its input generates a narrow pulse. The pulse is turned to a signal T'3 through an OR gate 230 to turn the recorder temporally to a stop mode and then the signal T'3 is slightly delayed by a delay circuit 218 and supplied to an AND gate 224 through an OR gate 229. Since a signal T'8 has been already turned to H at that time, the AND gate 224 generates the narrow pulse as a signal T'1. AT that time, the tape is stopped under the condition that the head 5 reaches a point F by its inertia and then the recorder is turned to an FF mode.</p> |
