SU418889A1 - - Google Patents

Description

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The invention relates to the field of instrumentation.

Devices for recording and reproducing an irregular information flow from a magnetic carrier are known, comprising a buffer cascade divided into sections, a common control unit, a tape drive control unit, drivers, and pulse counters.

However, such devices are cumbersome and therefore not fast enough and economical.

The aim of the invention is to improve the speed and efficiency of the device for magnetic recording of digital information.

For this purpose, the proposed device is equipped with two additional OR circuits, one of which is connected between the output of the recording memory generator and one of the inputs of the common control unit, and the other between the output of this imaging unit / ton and the input of the control unit for the tape drive. In addition, in order to improve the accuracy of the recovery of the recorded information, the recording device shaper is provided with a reference frequency generator connected in series with the electronic key, OR circuit, frequency divider, additional pulse counter and trigger, the output of which is connected to another electronic key input, as well as

the delay unit and the AND circuit connected between the connection point of the frequency divider with the additional counter and the second input of the OR circuit.

FIG. 1 shows a block diagram of a device for magnet and digital information; in fig. 2 is a block diagram of a write driver.

Sections 1 and 2 of the buffer stage are connected to a common control unit 3 connected to output terminals 4 and 5, a recording channel driver 6 and a switch 7 connected to input terminals 8 and 9. Other inputs of the switch 7 are connected through a channel driver reproduced 10, the OR 11 circuit, the block 12 is controlled by the operation of the tape drive mechanism (not shown in the drawing) and the shaper 6 by the OR 13 circuit and the recording channel amplifier 14 loaded onto the magnetic recording head 15, past which the magnetic medium moves. The recorded information is played using the magnetic head 17 and the amplifier of the eight-channel 18 generated. The input terminal 19 is connected to the OR 20 and 13. The pulse counter 21 is switched between the OR 20 li input of the block 12.

The shaper of record 6 contains a frequency divider 22, connects to clip 23, a counter (n + 1) of pulses 24, and a delay block 25 connected via an AND 26 circuit.

with the circuit "OR 27. Scheme" And 26 is connected to the input terminal 28. The trigger 29 is connected to the input terminal 30, the terminal 31 n through the electronic key 32 is connected to a generator of frequency 33.

The device works in the following way.

The information to be written comes in at inputs 8 and 9 in the form of binary characters "1 and" O. As one of the sections of the buffer cascade is filled, the counter 21 counts the symbols. After filling section 1 with a signal from the counter, the input and output circuits of the sections are switched and unit 12 is turned on. When the magnetic carrier reaches the required speed, a signal is generated, which turns on the recording channel driver.

During playback, the signal of the support frequency arrives at input 19. During its passage, the input and output circuits of the buffer stage are switched, and the signal from the magnetic carrier is fed to the driver 10 and then the control unit 3 and the OR 11 circuit. in conjunction with information and service signals, the block 12 controls the operation of the tape mechanism.

Subject invention

1. Device for magnetically recording digital information containing sections of a buffer stage associated with a common control unit, one of whose outputs is connected to a recording channel former, two inputs to a switch connected to a playback magnetic head through a former and a playback channel amplifier and the third input is connected through a pulse counter and an OR circuit with other inputs of the same switch and with a control unit

the operation of the start-stop tape mechanism, characterized in that, in order to increase speed and efficiency, it is equipped with two additional schemes "OR, one of which is included

the output of the recording channel former and the fourth input of the common control unit, and the other between the second output of this former and the input of the control unit for the operation of the tape mechanism.

2. The device but p. 1, characterized in that, in order to improve the accuracy of restoring underestimated information, the recording driver is equipped with a generator connected in series

the reference frequency, an electronic key, a RSHI circuit, a frequency divider, an additional pulse counter and a trigger, the output of which is connected to another input of the electronic key, as well as a delay unit and

an AND circuit connected between the point of connection of the frequency divider with an additional counter and the second input of the OR circuit.

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