SU434449A1 - DEVICE FOR MAGNETIC RECORDING - Google Patents

Description

one

The invention relates to the field of magnetic recording, in particular to magnetic recording devices.

A device for magnetic recording is known. It contains a number of playback channels, each of which is made up of a magnetic head connected through an amplifier-limiter connected to a clock driver, and a demodulator with a series of connected triggers, and a half-clock delay line. period, connected between the output of one of the drivers of clock pulses and the inputs of the last triggers of all circuits of series-connected triggers. The known device with a sufficiently low recording density makes it possible to compensate for inter-channel phase distortions that occur during recording and playback. However, as the recording density increases, the known device does not compensate for inter-channel phase distortion.

The aim of the invention is to increase the recording density.

This is achieved by the fact that the device is equipped with additional delay lines for half the clock period, each of which is connected between the output of one of the drivers of clock pulses and the inputs of the first triggers of a part of the circuits of serially connected triggers.

The invention is illustrated in the drawing. The proposed device contains a number of playback channels. Each playback channel consists of a 1, 2, 3, 4, or 5 converter of a reproduced signal in circuits 6, 7, 8, 9, or 10 of consecutively connected triggers AND, 12, and 13. A converter of 1, 2, 3, 4, or 5 contains in series connected magnetic head 14, pre-amplifier 15, correction circuit 16, amplifier-limiter 17 and demodulator 18. The output of each demodulator 18 is connected to one of the inputs of the corresponding first trigger I. In addition, each converter 1, 2, 3, 4 or 5 contains 19 clock pulse generator, on between the amplifier 17 and the demodulator 18 and provided with an output 20. The magnetic heads 14 of all the converters 1, 2, 3, 4 and 5 are placed in the same block that matches the magnetic tape. In this case, the magnetic head 14 of the converter 1 mates with the central part of the magnetic tape, and the magnetic heads 14

converters 2, 3, 4, and 5 with the tape surface between its central part and the edges.

Between the output 20 of the clock clock generator 19, which is included in the converter 1, and the inputs of the last triggers 13 of all circuits 6-10, the delay line 21 is turned on

half the clock period. Delay line

21 is also connected to the first and second triggers 12 and 13 of circuit 6.

The proposed device also contains additional delay lines 22 and 23 pa half of the clock period. Each additional delay line 22 is connected between the output 20 of the clock generator 19 clock pulses, which is part of one of the converters 2 and the inputs of the first triggers 11 of the corresponding circuits 7 or 9. In addition, one of the additional delay lines

22 is connected to the inputs of the second flip-flops 12 of all circuits 7 and 8, and the other to the inputs of the second flip-flops of all circuits 9 and 10. Each additional delay line 23 is connected between the output 20 of the driver 19 clock pulses included in one of the converters 4, and the inputs the first triggers 11 of the corresponding prices are 8 or 10. Additional delay lines 22 and 23 are connected to the formers of 19 clock pulses, which are connected to the magnetic heads 14 located closer to the central part of the magnetic tape than the magnetic heads 14 correspond to Inverters 3 and 5. Due to this, compensation of inter-channel phase distortion with increased recording density is provided.

Subject invention

A magnetic recording device containing a number of reproduction channels, each of which is made up of a magnetic head connected through an amplifier-limiter connected to a clock generator, and a demodulator with a series of series-connected triggers, and a delay line half a clock period,

connected between the output of one of the clock pulse formers and the inputs of the last triggers of all prices of successively connected triggers, characterized in that, in order to increase the recording density, it is equipped with additional delay lines of half a clock period, each of which is connected between the output of one of the clock formers pulses and inputs of the first trigger part of the chains of series-connected triggers.