SU402907A1 - DEVICE - Google Patents

Description

one

This invention relates to the field of magnetic recording.

Devices are known for recording a measuring signal on a magnetic tape, comprising an erasing head connected to a strani generator, a reproducing head, a shaper of different polar pulses, a pressure roller, a receiving and feeding units and a metal plate. The known devices ensure sufficient accuracy of the recording of the measuring signal of a given duration. However, the process of recording such a signal by known devices is fraught with considerable difficulties.

To simplify the recording process, a piece of magnetic sound recordings mounted on a metal plate is inserted into the device and mounted for movement together with a magnetic tape between the reproducing head and the pickup roller, the reproducing head is connected to the erase generator through a shaper of alternating pulses.

FIG. 1 shows a block diagram of a variant of the proposed device; in fig. 2-construction of the segment of the magnetic waveform, mounted on a metal plate.

The device contains a segment 1 of the magnetic sialogram, which is a piece of magnetic tape on which a periodic signal is recorded. Section 1 of the magnetic waveform is mounted on a metal plate 2, fixed in bar 3, freely moving in the groove 4 of the bracket 5. The plate 2 is positioned so that it can be pressed with a spring clamp 6 to the magnetic tape 7 n to move together with it between the spacing head 8 and a plate roll 9. The head 8 is connected to the driver of 10 different polarity pulses. The output of the imaging unit 10, which provides a positive pulse corresponding to the beginning of the magnetic tape recording segment 1, is connected to one of the inputs of the erasure generator 11 connected to the erasing head 12. The output of the imaging converter 10, which supplies a negative pulse corresponding to the end of the magnetic tape recording 1, with the other input of the generator 11 is washed out and with a driving mechanism 13. The driving mechanism 13 is connected with the receiving node 14, which provides rewinding of the magnetic tape 7 from the node 15. uschy mechanism 13 is connected to the button 16, ensuring its inclusion.

The measurement signal is recorded on the proposed device as follows.

After pressing the plate 2 to the magnetic tape 7, on which the periodic signal is recorded, pressing the button 16 starts the motion mechanism 13. The latter, together with the magnetic tape 7, moves a segment 1 of the magnetic soundtram past the head 8. A positive pulse arrives from the outputs of the imager 10, corresponding to Pachalu of segment 1 magpity of the signalgram, II negative impulse, corresponding to its koitsu. A positive impulse triggers the eraser 11 to erase, and a negative pulse blocks it. In addition, the negative impulse turns off the driving mechanism 13, stopping the movement of the magnetic tape 7. In the process of moving the magnetic tape 7, the generator 11 ensures erasure of the periodic signal recorded on it at a section whose length is equal to segment 1 of the magnetic biogram.

The measurement signal recorded on the proposed device can be used to measure the speed of movement of a magnetic tape in a tape recorder.

Subject invention

A device for recording a measuring signal on a magnetic tape comprising an erasing head connected to an erasing generator, a reproducing head, a pulse shaper, a pressure roller, receiving and feeding units and a metal plate, characterized in that, in order to simplify the process

recordings, a magnetic tape recording segment mounted on metal ilastine is inserted into it, mounted with the possibility of moving together with a magnetic tape between a pressure roller and a reproducing head connected through a driver of different polarity pulses to an erase generator.

FIG. 2