SU443384A1 - Time divider - Google Patents

Description

one

The invention relates to the field of automation and analog computing and can be used in computing devices with the presentation of signals as time intervals, as well as in automated control systems of radio equipment with the conversion of signals into pulse duration.

Known time-spanners include a control pulse driver, two time selectors, a pulse counter, and a pulse generator.

However, in known devices, the installation of the division factor and the need to re-feed the input of the divisible interval to reproduce the totality of the reduction of intervals is complex, which limits its functionality.

In order to expand the functionality in the proposed device, a pulse generator is connected to the input of a logical element OR through a serially connected first time selector and a controlled frequency divider, a pulse generator connected to one of the inputs of which through a serially connected second time selector, frequency divider and pulse counter, at the same time, a trigger trigger is connected to the second input of the first time selector, one of the inputs of which is connected

with the output of the controlled frequency divider via a scaling circuit.

The drawing shows a block diagram of the proposed time interval divider.

The divider consists of a pulse generator 1, time selectors 2 and 3, a frequency divider 4, a pulse counter 5, a controllable frequency divider 6, a scaling circuit 7, a trigger trigger 8, a control voltage generator 9 and an OR 10 logic element.

In the initial position at the output of the driver 9 of the control voltage and the start trigger 8, there are no control voltages and the temporary selectors 2 and 3 are closed. Frequency dividers 4 and 6, pulse counter 5 and scaling circuit 7 are in the zero initial state, while coefficients L are set at divider 4 in frequency and scaling circuit 7, corresponding to the required division factor of the input time interval.

The proposed device operates in two cycles: an input signal recording cycle and a reproduction cycle.

The write cycle starts at the moment when the device starts the convertible time interval to the input device. Under the action of the beginning of the time interval, the control voltage driver is triggered on the output

which appears the output voltage, opening the second time selector 3. The time during which the second time selector 3 is open is equal to the duration Hz of the time interval to be converted. During this interval, Ai pulses pass through the second time selector 3, the number of which is determined by the formula

L. 1.T „

where / 1 is the pulse frequency of the generator 1.

At the input of the pulse counter 5 of this sequence of pulses, every Lth pulse passes, recording ultimately the number / V2, determined by the formula

L.

lt

L

L

This number of pulses is converted to the division ratio of the controlled frequency divider 6. By setting this division factor, the first cycle of operation is completed.

The playback cycle starts from the moment the trigger signal is applied to the device, which enters the single trigger trigger 8 input, throwing it to the single position and opening the first time selector 2. In addition, the trigger pulse goes to one of the inputs of the logical element OR 10 and through it to the output of the device, starting the output converted signal.

To the other input of the logic element “OR pulses come from the output of the controlled frequency divider 6. Their follow-up period is determined according to the expression

  AZJL ZiL

out -

/

flff

fl

And is an input interval divided L times.

Since, following the triggering pulse, N pulses from the output of the controlled frequency divider 6 are received at a constant time interval Guy, the recalculation circuit overflows and generates a pulse signal that arrives at the zero trigger trigger 8, transferring it to the initial before the second cycle, the zero state, while the first time selector 2 is closed, and the pulses from generator 1 do not pass.

Thus, starting from the moment the device starts to play, the output receives pulses with a uniform interval between them equal to the input time interval divided by L times. The divider divides the input time interval into N parts. The number N can be chosen to be sufficient.

wide limits. The device allows multiple reproduction of the output signal at arbitrary selected time points.

Subject invention

A time slot divider containing a pilot pulse driver, two time selectors, a pulse counter and a pulse generator that differs in

so that, in order to expand the functionality, the pulse generator is connected to the input of the logic element OR through a serially connected first time selector and a controlled divider

frequency, one of the inputs of which is connected through a second time selector connected in series, a frequency divider and a pulse counter is connected to a pulse generator, while a trigger trigger is connected to the second input of the first time selector, one of the inputs of which is connected to the output of a controlled frequency splitter through a scaling circuit.

and