SU949684A1 - Device for magnetic recording and reproducing - Google Patents

Description

(54) DEVICE FOR MAGNET RECORDING AND REPRODUCTION

one

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

A device for magnetic recording and playback is known, which contains input buses connected to the inputs of the information recording channels - playback, the outputs of which are connected to the inputs of the trigger 1.

This device has a relatively simple design, but does not allow for sufficient simplicity of the control process.

It is also known a device for magnetic recording and playback, containing input slots connected via comparators to the inputs of the first block of AND elements connected via OR elements to the inputs of information channels of recording and playback, the outputs of which are connected to the trigger inputs, a block of counters whose outputs are connected to a computer connected to the output of the recording-playback service channel and to the inputs of the second block of I elements, the outputs of which are connected to the output switches.

switch and pulse generators. The device allows for relative ease of control 2.

A disadvantage of the known device is that the magnetic recording and reproduction is significantly faulty.

The purpose of the invention is to reduce the incidence of magnetic recording and reproduction.

Claims (1)

This goal is achieved due to the fact that a decoder is entered into the device for magnetic recording and playback, the outputs of which are connected to the input of the service recording channel - playback, to the input of the switch and to the OR elements, code-analogue converter, connected by an output to the comparators, an additional service channel recording - playback, channel distributor, the outputs of which are connected to the second block of elements AND, pulse distributor connected by the first input to the output of the first pulse generator, first additional counter connected to the output of the second pulse generator coupled to the third unit element, and connected between the outputs of flip-flops and the inputs of the block counter and the second and third additional counters. At the same time, the installation inputs of the counter block, the first additional counter, and the triggers are connected to the channel distributor connected via an additional service channel for recording - playback to the output of the switch connected by other outputs to the first block of elements And, the output of the first additional counter is connected the counter is connected to the inputs of the decoder connected to the second input of the pulse distributor connected by the first output to the input of the second auxiliary tional counter and a second output connected to the input of the third additional counter coupled to the third) input of the pulse distributor one of the outputs connected to the inputs of the code converter - analogue. The drawing shows one of the possible variants of the proposed device for magnetic recording and playback. The device contains input buses 1 connected via comparators 2 to the inputs of the first block 3 of the elements AND connected through the elements OR 4 to the inputs of the information channels 5 of the recording-reproduction, the outputs of which are connected to the inputs of the trigger 6, and the block 7 of the counters. The outputs of the meter block 7 are connected to the calculator 8 connected to the output of the service channel 9 of the recording - reproduction and with the inputs of the second block 10 of elements And whose outputs are connected to the output buses 11. The device also contains a decoder 12, the outputs of which are connected to the input of the service channel 9 of the recording - reproduction, to the input of the switch 13 and to the elements OR 4, the converter 14, the code is an analog connected to the outputs with comparators 2, a distributor of 15 channels, a distributor of 16 pulses, the first additional counter 17 and an auxiliary the service overhead channel 18 of the recording-play. At the same time, the distributor 15 channels is connected by outputs to the second block 10 of elements I, the distributor 16 of pulses is connected by the first input to the output of the first generator 19 of pulses, and the first additional counter 17 is connected to the output of the second generator 20 of pulses connected to the third block 21 of elements And the outputs of the triggers 6 and the inputs of the block 7 counters. Moreover, the output of the first additional counter 17 is connected to the transmitter 8. In the device the installation inputs of the block 7 of the counters, the first additional counter 17 and the triggers 6 are connected to the distributor 15 channels. The latter is connected via an additional service channel 18 for recording - playback to the output of the switch 13 connected by other outputs to the first block 3 of elements I. In the device also the outputs of the second additional counter 22 are connected to the inputs of the decoder 12 connected to the second input of the pulse distributor 16 which is connected first output to the input of the second additional counter 22 and connected to the second output to the input of the third additional counter 23 connected to the third input of the distributor 16 pulses From the outputs connected to the converter inputs 14, the code is analog. The proposed device provides multi-channel magnetic recording and reproduction of electrical signals constituting a matrix. Pulse-width pulse pulses are recorded in the device for each of the information tracks of the magnetic tape recording, and clock pulses that are subjected to pulse-width modulation are recorded in the first service recording track. In the second service track, recordings record pulses that separate each group of consecutive cycles of modulated signals forming the rows of the matrix, and each beat is modulated with groups of signals forming the columns of the matrix. In this case, the time intervals between the pulses of the pulse-width conversion are placed within the time intervals of the clock frequency. When reproducing the duration of the time intervals between pulses reproduced from the first service recording track, they are converted into codes and they correct the values of the codes into which the durations, intervals between pulses reproduced from the information recording tracks are converted. These pulses are located within the time intervals between the pulses, reproduced from the first service track of the recording. Moreover, the pulses reproduced from the first and second service tracks of the recording separate codes from the output buses 11 from each other. The use of the invention significantly reduces the error in magnetic recording and reproduction. The invention of the device for magnetic recording and playback, containing input bus connected via comparators to the inputs of the first of the blocks of AND elements connected through the elements OR to the inputs of