SU418891A1 - - Google Patents

Description

one

The invention relates to the field of instrumentation and can be used in magnetic recording equipment for multi-track recording of discrete and service information signals, presented in the form of sync pulses.

Magnetic recording devices are known that record discrete and service information using a block of magnetic heads located across the width of a magnet tape. But if it is necessary to move forward or backward, the speed of the magnetic tape does not always meet the requirements of the magnetic recording of the data transmission equipment and their reception, working in conjunction with the annaratory. At acceleration of the tape travel without corresponding measures, reliable signal reproduction decreases.

The aim of the invention is to reduce the transport time of a magnetic tape in a tape drive mechanism of a magnetic recording device and to increase reliable and reproducible information.

For this purpose, the proposed device is equipped with a meter controlled by a "volatile" circuit, connected to its output and connected to the phase switch of the electric motor with a trigger.

The drawing shows a block diagram of the described magnetic recording device.

2

A magnetic tape 3 is wound on the coils 1 and 2. The recording and reproduction of signals on a magnetic tape is carried out by a block of heads consisting of a magnetic head 4,

recording and reproducing sync pulses; and heads 5 for recording and reproducing discrete messages. Thus, sync pulses are recorded on the track 6 of the tape, and discrete messages on the track 7.

The tape is driven by coupling the coil 2 with the electric motor 8, and the switching of the heads 5 is made by a kommatatopo; 9. Heads can be connected to amplifier 10 to record discrete messages and to controller II

replaying these messages when notifying input 12 of the corresponding command. The output 13 of the head 4 can be connected, for example, a generator of snim pulses (not shown), and through the input 14 a voltage is applied to the output replicator 15 of the clock pulses, the counter 16 c1H1 pulses, which is controlled by the volume of incoming pulses impulses, phase switch 17 of the electric motor, differentiating n, eoychk 18

trigger 19. In series with amplifiers 10

and 11, the circuits “P 20 and 21 are included.

The meter is made controlled by volume,

For this purpose, inputs 25 are used. Input 26 is supplied as a potential by a signal from the Record command, and to input 27 by a signal from the Playback.

Due to the switching shown in the circuit implemented by the counter 16 and the trigger 19, it is possible to significantly shorten the transport time of the magnetic tape. In this case, the phase switch of the electric motor causes it to operate in the mode of not only accelerated transport, but also accelerated reversal,

Subject invention

A magnetic recording device comprising a block of magnetic heads with a switch connected through recording and playback amplifiers of discrete communications with the AND schemes, an electric motor with its phase switch and an amplifier for reproducing chip pulses connected to its AND circuit, characterized in that transporting a magnetic tape in a tape drive mechanism of the device and improving the reliability of reproducible information, it is equipped with all other inputs and outputs of all schemes. A pulse counter connected in volume and connected to its output by a trigger connected to the motor phase switch.

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