| 摘要 |
A magnetic-tape apparatus with a rotary scanning device in which a plurality of magnetic heads are mounted at the circumference and are associated with rotating amplifiers, which for the signal transfer are connected to stationary devices at a stator side via respective rotary transformers. The stator side of the rotary scanning device includes a generator for the generation of a phase-data signal including a periodically recurring pulse sequence bounded by synchronization pulses (S) and comprising between the synchronization pulses a bit-serial sequence of pulses whose pulse edges time the transfer of the signals from and to the magnetic heads. A feedback register circuit at the rotor side derives various timed head-switching signals for turning on/off the rotating amplifiers from an optically transmitted phase-data signal.
|
