SU539312A1 - A device for recording speech on magnetic media - Google Patents

Description

one

The invention relates to the field of instrumentation.

Devices are known for recording and reproducing voice information signals in several channels, such as communication from an aircraft to an airport, on-board negotiations 1, or studying consumer demand from a retail network 2.

In these cases, automatic tape cassette recorders are used, made with a number of drives, with carrier strain sensors and other elements.

However, such devices are complex and energy intensive in terms of power.

It is also known a device for recording speech on a magpit carrier, comprising autonomous drives, amplifiers connected to a common voice information line, control units and a common reservation unit 3, intended for use as an aircraft apparatus of magnetic recording of voice messages. However, it does not allow for sufficiently reliable recording of information in an emergency.

For increasing the reliability of information recording in an emergency situation in the proposed device, the backup unit is made with the number of paths identical to the number of channels of the main recording device, and each path is connected in series 2

the threshold element, the circuit I and the prohibition unit connected between the output of the control unit and the amplifier input of the corresponding channel, one of the inputs of the circuit I is also connected with the specified output of the control unit, and the other input of the prohibition unit with a voice information line.

FIG. 1 shows a block diagram of the described device; in fig. 2 — reservation block.

From the line 1 of speech information through the amplifier 2, its output 3 and the magnetic head 4, the signal is recorded on the magnetic amplifier 5 installed in the drive 6. At the same

The accumulator signal from the output 7 of amplifier 2 comes converted from the control unit 8, which can simultaneously perform the control function. Through output 9 and input 10, block 8 is connected to the drive, and output 11

connects it to the reservation unit 12. The last signal through input 13 also receives a signal from line 1, and its output 14 is connected to amplifier 2. From output 11 of block 8, the signal arrives at the AND 15 circuit, and from input 13 it goes to the inhibit block 16 From output 11, the signal simultaneously hits the threshold element 17. Each of the And circuits has inputs 18, 19, 20, and 21. When recording speech information is received

from lines 1 to amplifiers 2 of the corresponding redundant recording paths (in Fig. I are shown with a dash-dotted line). At the outputs of the amplifiers 7, the start signals of the accumulators 6 are formed in the selected order. If the reserved path fails from block 8, a signal is sent to the backup block 12, the threshold element 17 is triggered, and with it the AND path of the corresponding path. In spite of the failure, the recording of information through the amplifier 2 is carried out. In case of double / south failure, the second threshold element comes into operation. It activates another appropriate scheme, And, which will allow to keep a reliable recording of information along this path.

The number of failed channel-paths will depend on the value of the threshold function of the threshold element, and the paths of the backup unit will only automatically work with certain command signals.

Claims (3)

Invention Formula A device for recording speech on magnetic media containing autonomous accumulate 2 - 8 C-I 1I. Whether amplifiers connected to a common voice information line, control units and a common backup unit, characterized in that, in order to increase the reliability of recording information in an emergency, the backup unit is made with a number of paths identical to the number of channels of the main recorder, and each path equipped with a series-connected threshold element, an And circuit and a prohibition unit, connected between the output of the control unit and the amplifier input of the corresponding channel, while one of the inputs of the And circuit is connected also with specified block output control, and the other input of the block ban - with a line of voice information. Sources of information: matsie taken into account during the examination: I. US Patent No. 3656705, Cl. 242-199, 1972. 2. US Patent No. 3612542, cl. 274-4, 1971. 3. The patent of England, No. 1157961, cl. G 4H, 1969, (prototype).