SU953663A1 - Tape-drive mechanism control device - Google Patents

Description

one

The invention relates to instrumentation, namely, to a device with which it is possible to control a tape recording mechanism of a magnetic recording apparatus.

A device for controlling a tape drive mechanism of a magnetic recorder by means of electronic units is known, which uses a tachometer sensor that outputs Q signals that are proportional to the speed of rotation of the side nodes of the tape drive mechanism. As an electronic element, a reference element, a trigger, an amplifier and a five meter, 5 connected to the power source of the electric motors Cl, are used.

The device is quite reliable in operation, but at the same time it does not allow reliable. adjust the position of the magnetic tape in the tape mechanism, which leads to a failure of the recorded and reproducible information.

The device for controlling a belt mechanism, containing an indicator, a control unit, the first OR element, a single vibrator connected to the second input of the first OR element, the second OR element, and a tension sensor of the magnetic tape 2, is closest to the invention.

However, the device does not have the reliability from the point of view of the remote activation of the tape-carrying mechanism with simultaneous automatic control of the presence of a magnetic tape in the path.

The aim of the invention is to improve the reliability of the remote tape mechanism while ensuring automatic control of the presence in the path of the magnetic tape.

Claims (2)

Achieving this goal is achieved due to the fact that the device for controlling a tape mechanism, containing an indicator, a control unit, the first OR element, a one-shot connected to the second input of the first axis OR, the second element of the magnetic tape tension , enter the series connected element And and the prohibition unit associated with the input of the control unit, the first and second selectors, with the first input of the first selector associated with the first input of the And element and with the second output of the control unit, the first the second selector's stroke with the second input of the And element, with the indicator and with the magnetic tension sensor, the outputs of both selectors — with different inputs of the second OR element, the output of which is connected to the one-vibration input, and the second input of the inhibit unit with the one-vibration output. The drawing shows the structural scheme of the device. To turn on the tape mechanism 1, a switch-on unit 2 is used, which, in conjunction with the one-vibrator 3, is connected through the element OR 4 to the mechanism 1. The input of the one-shot is loaded by the element OR 5, and the magnetic tension sensor 6 (not shown) engages with the tape-driving mechanism. The selector 7 and the selector 8 are connected to different inputs of the OR 5 element, the input of which is connected to the AND 9 element connected to the prohibition unit 10 and with the indicator 11. The output terminal 12 is connected to the output of the prohibition unit 1O. Conditionally in the device, the element OR 4 and the selector 7 are named first, the element OR 5 and the selector 8 are second. In the process of operation of the tape m. The magnetic tape may break or end. Then the sensor 6 will not generate a certain signal, the selector 8 will generate a pulse, which through the element OR 5 will trigger the one-shot. If only a change in the level of the tape's tension occurs, but not a break, the signal from the one-shot will be last for a short period of time and this will prevent the signal from the output of the element AND to the switching on unit 12. After the termination of the signal from the one-shot, the output signal from the element AND goes through the inhibitor block to the switch-on unit to block commands of its first output. The mechanism stops. The indicator will operate and simultaneously the output signal will be applied to the output clip, for example, to the backup equipment (not shown). The operator, who repeatedly turns on the stopping mechanism, will, under favorable conditions, start up again if An adhesion tape has not been broken. An indicator indicates these conditions. The resulting automatic tracking mode behind the optimum level of magnetic tape tension reduces the number of errors in zap the information that is being retrieved and reproduced, which reduces the likelihood of an emergency. Claims An apparatus for controlling a tape-testing mechanism comprising a control unit and a one-shot connected via the first OR element to the input of the tape-breaking mechanism, as well as a second OR element, an indicator and a tension sensor of the magnetic tape, in order to increase the reliability of remote activation a tape mechanism with, ensuring automatic control of the presence in the path of the magnetic tape, the device And the blocking unit connected in series with the input are inserted into the device control unit, first and second. the selectors, with the first input of the first selector associated with the first input of the element I and the second output of the control unit & laziness, the first input of the second selector with the second input of the element And, with the indicator and with the tension sensor of the magnetic tape, the outputs of both selectors different inputs of the second element OR, the output of which is connected to the one-shot one-shot. and the second input of the prohibition unit - with the output of the one-shot. Sources of information taken into account in the examination 1. US Patent N 3717316, cl. 242-19O, 1973. 2. USSR author's certificate for application number 2756435, cl. Qll B 15/18, 1979 (prototype).