SU1247926A1 - Device for magnetic recording-reproducing of information - Google Patents

Abstract

The invention relates to the field of accumulation of information and allows the dynamic range of the result of reproducing information to be expanded. The ring trigger counter 12 generates a pulse train by dividing the frequency-modulated 0-J signal by a factor equal to twice the number of recording magnetic heads 3. The generated pulse train is applied to the totalizers 6 of the voltages, which are also affected by the source 11 of the reference frequency signal. The results of the addition are fed from the voltage adders 6 to the recording magnetic heads 3, which magnetize the magnetic recording medium 5. The reproduction results are received at the inputs of the compensator 10 temporal distortions of the signals, reducing the temporal distortions of the reproduced pulse sequences, the result arrives at the shapers of 14 pulses, the voltage adder 13 and the frequency demodulator 8. 2 Il. TP (L / 1CHE 4 CO tsD O5 FIG. /

Description

The invention relates to the accumulation of information, namely, devices for magnetic recording-reproduction of information.

The aim of the invention is to expand the dynamic range of the playback result information.

Figure 1 shows one of the possible variants of the proposed device for magnetic recording-reproducing information pulses of a frequency-modulated signal. The pulse sequences from the outputs of the ring trigger meter are supplied to the voltage adders 6, which are also affected by the source 11 of the reference frequency signal. At the same time, the spectrum of the reference frequency signal lies below the spectrum of the pulse sequences of the ring trigger counter 12. The results of the addition are fed from the adders 6 of the voltages

tion; 2 shows timing diagrams,) of recording magnetic heads 3, which characterize its operation.

The device contains a frequency modulator 1 connected to the input bus 2 by the input, magnetic heads 3 and 4 recording and reproducing, mounted

w, yush, magnetization of the carrier 5 magnetic recording.

The playback result from the magnetic recording medium 5 comes from the reproducing magnetic heads 4 through an enhanced ability to interact with the playback carriers 7 to the inputs of the magnetic recording 5 and 5, for example, from the magnetic compensator 10 temporary signal distortions. The multichannel compensator 10 temporal distortion of the signals produces a separation of the reproduced signal of the reference frequency and the reproduced sequences of pulses. The multichannel compensator 10 temporal distortions of the signals also accomplishes by reducing the time distortion by using the reproduced reference frequency signal.

with a tape, and connected respectively to the outputs of the adder 6 voltage and with the inputs of the amplifiers 7 playback, frequency demodulator 8, connected to the output output 9, multi-channel compensator 10 temporal distortions of the signals and the source 11 of the reference frequency signal. The inputs of the multichannel compensator 10 temporal distortions of the signals of signal sweeping. The multichannel compensator 10 temporal distortion of the signals produces a separation of the reproduced signal of the reference frequency and the reproduced sequences of pulses. The multichannel compensator 10 temporal distortions of the signals also accomplishes by reducing the time distortion by using the reproduced reference frequency signal.

connected to the outputs of amplifiers 7 of the re-25 reproduced sequences of reproduction. The output of the source 11 signal of the reference frequency is connected to the first inputs of the adders of the 6 voltages.

The device also contains an annular trigger counter 12 connected in hots caused by fluctuations in the speed of movement of the magnetic recording medium 5. Corrected reproduced pulse sequences from the outputs of the multichannel compensator 10 time and to the output of the frequency modulator 1 and 30 signal probes arrive at the pulse shaper 14 at the instants of the signal zero crossing. The latter produce pulses at the moments of transition of each signal through zero {fig.2d, fig.2e and fig.2j}. These pulses come through additional connected outputs to the second inputs of the voltage adders 6, an additional voltage adder 13 connected to the input of the frequency demodulator 8, and the drivers 14 pulses at the moment detectors 14 at the time of zero signal transition. The latter produce pulses at the moments of transition of each signal through zero {fig.2d, fig.2e and fig.2j}. These pulses come through the additions of the zero-crossing signal. A form voltage adder 13 at the pulse frequency converter 14 at the moments of the transition demodulator 8. The result of the frequency demodulation from the output of the frequency demodulator 13 is fed to the output strip 9 (FIG. 2h).

a zero signal is connected by inputs to the outputs of a multichannel compensator; 10 temporal distortions of signals and connected by outputs to the inputs of an additional voltage adder 13.

Magnetic recording-reproduction of information through the proposed device is as follows.

The signal to be recorded comes by

A device for magnetic recording-reproduction of information containing a frequency modulator connected by an input to an input bus, recording and reproducing bus 2 to a frequency modulator 1, 45 driving magnetic heads, the output of which is pulsed by a frequency-modulated signal is fed to the input of a ring trigger the counter 12. The ring trigger counter 12 forms a sequence of pulses by dividing the frequency with the possibility of interacting with the carrier of magnetic recording and connected respectively to the output With the signals of the voltage adders and with the inputs of the playback amplifiers, a frequency demodulator, a modulated signal is connected in a number of times, equal to 50 output to the output bus, a multi-channel doubled number of recording magnetic distortion compensator

3, (fig.26, fig.2b and fig.2g) of the signals connected by inputs to the front and rear edges of these subsequent playback amplifiers, and the source

The pulse sequences are set by the reference frequency pulse signal connected to a frequency modulated signal. By arriving at the first inputs of the adders, for example, the phase shift between adjacent stresses, characterized in that, with the aim of pulsing pulses equal to the time-spreading of the dynamic range, to the result interval between the corresponding reproduction values, the frequency-modulated signal is introduced into it. The pulse sequences from the outputs of the ring trigger meter are applied to the adders 6 of the voltages, which are also affected by the source 11 of the reference frequency signal. At the same time, the spectrum of the reference frequency signal lies below the spectrum of the pulse sequences of the ring trigger counter 12. The results of the addition are fed from the adders 6 of the voltages

  recording magnetic heads 3,

w, yush, magnetization of the carrier 5 magnetic recording.

The playback result from the magnetic recording medium 5 comes from the reproducing magnetic heads 4 through the reproduction amplifiers 7 to the inputs of the multichannel compensator 10 temporal playback seekers 7 to the inputs of the multichannel compensator 10 time distortions of signals. The multichannel compensator 10 temporal distortion of the signals produces a separation of the reproduced signal of the reference frequency and the reproduced sequences of pulses. The multichannel compensator 10 temporal distortions of the signals also accomplishes by reducing the time distortion by using the reproduced reference frequency signal.

pulses caused by fluctuations in the speed of movement of the magnetic recording medium 5. Corrected reproduced pulse sequences from the outputs of the multichannel compensator 10 time signal distortions arrive at the waveform signals received by the shapers of 14 pulses at the moments of the signal zero crossing. The latter produce pulses at the moments of transition of each signal through zero {fig.2d, fig.2e and fig.2j}. These pulses come through an additional adder 13 voltages to the frequency demodulator 8. The result is a frequency adder 13 voltages to the frequency demodulator 8. The result of the frequency demodulation from the output of the frequency demodulator 13 is fed to the output strip 9 (Fig. 2h).

Claims (1)

Invention Formula A device for magnetic recording-reproduction of information containing a frequency modulator connected to the input bus by an input, recording and reproducing magnetic heads mounted with the ability to interact with the magnetic recording medium and connected respectively to the outputs of the voltage adders and the inputs of the playback amplifiers frequency a demodulator connected by the output to the output bus; a multi-switch trigger meter connected by the input to the output of the frequency modulator and connected by the outputs to orym inputs of adders voltages, additional voltages adder coupled to yield a signal through zero, connected by inputs to the outputs of a multichannel compensator for temporal distortion of signals, and the outputs of pulse shapers at the moments of signal crossing through zero are connected to with the input of the frequency demodulator, and the form-inputs of the additional adder, the directors of the pulses at the moments of transition Ll rJ Editor N. Gorvat Order 4129/51 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk iab., 4/5 Branch PPP "Patent, Uzhgorod, st. Project, 4 a signal through zero, connected by inputs to the outputs of a multichannel compensator for temporal distortion of signals, and the outputs of pulse shapers at the moments of signal crossing through zero are connected to inputs additional adder voltage. s FIG. 2 Compiled by Y.-K. Rosencrantz Tehred I. VeresKorrektor M. Maksinnshnnets Circulation 543Subscribe