SU773698A1 - Apparatus for magnetic recording and reproducing of speech signals - Google Patents

Description

one

The invention relates to magnetic recording, in particular, to devices for magnetic recording and reproduction of speech signals.

A device for magnetic recording and reproduction of speech signals is known, which contains an input bus of speech signals connected through a recording amplifier to a recording channel switch connected to recording heads and reproducing heads connected to a playback channel switch 1. The known device provides relatively high quality magnetic recording and speech reproduction.

A disadvantage of the known device is the .8 unavailability.

It is also known a device for magnetic recording and reproduction of speech signals, containing an input bus of speech signals connected through a recording amplifier connected to the self-timer input of the control unit, with a first input of a mixer connected to the input of a recording channel switch connected to recording heads, playback heads connected to the playback channel switch connected to the input of the splitter, the master oscillator, the output of which is connected to the time code generator, is connected to the second input of the mixer and connected with its output to the control unit connected to the tape mechanism, and the output bank of the reserve switching signal connected to the output of the first OR OR 2 gate. This device 10 provides for the backup of the voice recording and playback .

The disadvantage of such a device is that the redundancy is significant.

The purpose of the invention is to reduce the error of the reservation.

Claims (2)

This goal is achieved by introducing a reset pulse shaper, a comparator connected to the output of the splitter and connected in series to a clock generator connected to the output of the master oscillator, a logic element And connected to the control unit, and a device for magnetic recording and reproducing speech signals. the counter connected to the output of the second logical element OR and connected with its output to the first logical element OR connected to the outputs of the code generator in Yemeni switch and recording channels. At the same time, the reset pulse shaper is connected to the input of the second logical element OR, connected to the output of the comparator and connected by its output to the logical element AND connected to the output of the counter. The drawing schematically shows the device. The proposed device contains an input bus 1 of speech signals connected to the first input of the mixer 2 via the recording amplifier 3 connected to the self-timer input of the control unit 4. A mixer 2 is connected to an input of a switch of 5 recording channels connected to recording heads 6, coupled with a magnetic tape 7 mounted in a tape machine 8. There are also connecting heads 9 connected to a magnetic tape 7 connected to a switch of 10 playback channels connected with the input of the separator 11. The proposed device also contains the master oscillator 12, the output of which is connected to the shaper 13 time code connected to the second input of the mixer 2. The output of the shaper 13 time code connected to a control unit 4 connected to a tape drive mechanism 8. The output of the time code generator 13 is also connected to the input of the first logic element OR 14, the other input of which is connected to the output of the recording channel switch 5, and the output to the output enable signal strip 15. The proposed device also contains a shaper 16 pulse reset, the comparator 17 connected to the output of the separator 11, and connected in series shaper 18 clock pulses, logic element And 19 and the counter 20. At the same time driver 18 clock pulses connected to the output of the master oscillator 12, logic element And 19 - to block 4 controls, and the counter 20 - to the output of the second logical element OR 21. The output of the counter 20 is also connected to the logical element AND 19 and to the first logical element OR 14. In the proposed device The driver of reset pulses 16 is connected to the input of the second logic element OR 21 connected to the output of the comparator 17. The output of the second logic element 21 is connected to the logic element AND 19. In the proposed device, the output of the master oscillator 12, the driver of the time code 13, amplifier 3 records , mixer 2, switch 5 of the recording channels or recording heads 6 leads to the formation of a reserve switching signal by the second logic element OR 14. Break of the magnetic tape 7 or the violation of its contact with the record amplification of the conductive reproducing heads 6 and 9 also leads to the formation of the second reserve signal incorporating the OR gate 14. The use of the invention permits greatly umenschit error reservation. An apparatus for magnetic recording and reproducing speech signals, comprising a voice input bandwidth connected via a recording amplifier connected to the self-timer input of the control unit, to a first mixer input connected to the input of a recording channel switch connected to recording heads, reproducing heads, connected to the switch of the playback channels connected to the input of the splitter, the master oscillator, the output of which is connected to the time code generator, common to the second input of the mixer and connected with its output to the control unit connected to the tape mechanism, and the output bank of the reserve switching signal connected to the output of the first OR logic element, characterized in that, in order to reduce the backup error, a former is introduced into it pulse reset, a comparator connected to the output of the separator, and connected in series shaper clock pulses connected to the output of the master oscillator, a logical element And, n connected to the control unit, and a counter connected to the output of the second logical element OR and connected to the output of the first logic element OR connected to the outputs of the time code generator and the recording channel switch, with the reset pulse generator connected to the input of the second OR element connected to the output of the comparator and connected to the output with a logical element And connected to the output of the counter. Sources of information taken into account in the examination 1. US patent number 3591731, cl. 179-100.2 1971. 2. US patent number 4011586, cl. 360-61, 1977 (prototype).