SU824118A1 - Dewice for introducing corrections into a time-keeper - Google Patents

Description

(54) DEVICE FOR INPUT OF AMENDMENTS TO THE TIME VARIABLE

I

This invention relates to radio measurement.

A device for generating pulses with a correction of their number is known, comprising control triggers, AND elements, a reference oscillator, a frequency divider, a summing counter, a differentiating converter, a reversible counter, an OR element, blocks of gates, a memory register, counters, and decoders 1.

The disadvantage of this device is its complexity.

The closest in technical essence to the present invention is a device comprising a generator, the output of which is connected to a multi-line delay line, the taps of which are connected to the first inputs of two-input elements AND, the second inputs of which are connected to the outputs of the bits of the ring shift register, and the outputs through the OR element are connected with the input of the time storage, two RS-flip-flops, the inputs of the first of which are connected to the signal signals of the sign of the correction, and the outputs are connected to the first inputs of two three-input elements And, the second inputs of which They are connected to the output of the second RS flip-flop, the S input of which is connected to the signal bus of the correction value, and the R input of which is connected to the output of counter 2 ,.

However, this device does not provide a sufficient range of values of the amendments.

The purpose of the invention is to expand the range of values of the introduced amendments.

The goal is achieved by the fact that a device containing a generator, the output of which is connected to a multiple-branch line

delays whose taps are connected to the first inputs of two-input elements AND, the second inputs of which are connected to the outputs of the bits of the ring shift register, and the outputs through the OR element are connected to the input of the time store, two RS-flip-flops, the inputs of the first of which are connected to the tires of the signal of the sign of the correction and the outputs are connected to the first inputs of two three-input elements And, the outputs of which are connected to the inputs of the ring shift register, the second inputs of the three-input elements And connected to the output of the second RS trigger, the S input of which is connected with the amendment signal bus, and the R-input of which is connected to the counter output, the element is entered

delays and an additional OR element whose inputs are connected to the outputs of the three-input AND elements, and the output is connected to the counter input, the third input of the first three-input And element, and the third input of the second three-input AND element are connected to the time storage input.

The drawing shows a structural electrical circuit.

The device contains a generator, a delay line with taps 2, two-input elements AND 3 - 5, elements OR 6- and 7, time keeper 8, RS-flip-flops 9 and 10, three-input elements 11 and 12, a shift ring register 13, counter 14, delay element 15. On the input bus 16 and 17, a signal of the sign of the amendment is given, on the input bus 18, the signal of the amendment.

The device works as follows

For certainty, a device with a delay line with three taps is considered. In the annular reversing shift register 13, the unit is written only once, let it be in the first one. The pulses from the output of the generator 1, after passing through the first branch 2 of the delay line, the open element And 3, the element OR 6, are fed to the input of the storage 8 time. The value of the amendment in the digital additional code is recorded in the counter 14. When the command “Entering the amendment to the bus 18” is received, the S input of the RS flip-flop 10 overturns and opens elements 11 and 12, depending on the state of the RS flip-flop 9 controlled by the signals from busbars 16 and 17. Let element 11 be opened. Another pulse of generator 1, passing through the first branch 2 of the delay line, element 3, element OR 6, element 15 of delay and element 11 of which is fed to the input “+ 1 of the circular shift register 13 , the shift unit in the second bit, thereby opening the element And 4 and jerk element AND 3. The next pulse from generator 1 passes to the input of the time keeper, the second tap 2 of the delay line and through element I 4, i.e., it is shifted in relation to the previous one, its pulse passed to the time guard, for a time equal to the delay between the second and first tap 2 delay lines. The same pulse through the delay element 15 and through the element 11 is fed to the input of the ring register 13 and shifts the unit to the third bit. The next pulse from the generator 1 passes to the input of the time store through the third tap of the delay line 2, i.e. on one discrete input of the amendment. The same pulse through the delay element 15 and through the element 11 is fed to the input of the ring register 13. Due to the presence of the delay element 15, the switching of the register 13 takes place in such a way that the pulse following the pulse received at the time store input is from the first tap 2 the delay line does not pass to the input of the time keeper, but only the next element passes after it through the period of the frequency of the generator 1 pulse from the first branch 2 of the delay line. Thus, the pulse arriving at the input of the time keeper is shifted for a whole period of the frequency of the generator 1. With the next pulse from the generator, the cycle of operation of the device is repeated.

The pulses from the output of the element 11 also go through the element OR 7 to the input of the counter 14, when overrun of which the pulse from its output returns the RS flip-flop 10 to the initial position, the element 11 also closes and the correction is stopped. Connecting the counter 14 through the element OR 7 to the output of the element AND 11 ensures that the counter 14 receives counting pulses every time the register 13 is shifted, i.e. the counter 14 counts the number of ampled samples.

For proper operation of the device, the value of the delay element 15 delay t, is selected as follows

e3n-.f} T - lr,

where Vy. is the time interval between the pulse on the last tap of the 2 delay line and the pulse following on it on the first tap;

T - period of the frequency of the generator 1; t is the longest pulse duration on the taps of the 2 delay lines.

A correction with the opposite sign is entered with an open element And 12 and a closed And 11, which is determined by the state of the RS flip-flop 9. Let the unit in the ring register be written in the third bit. Then the pulse from the output of the generator 1 passes to the input of the time keeper through the third branch 2 of the delay line, element 5,

open from the output of the register 13, and the element OR 6. The same pulse through the element AND 12 is fed to the input “- 1 of the ring register 13 and shifts the unit from the third bit to the second. At the same time, this pulse through the element OR 7 is fed to the input

counter 14. The next pulse generator 1 passes to the time keeper through the second branch 2 of the delay line, and the next pulse through the first branch. The same impulse through the element And 12 shifts

the unit from the first to the third bit of the ring register and the pulse from the third branch 2 of the delay line is fed to the time keeper. Thus, the correction is entered into the time keeper, since instead of three pulses from the generator 1 output

Claims (2)

four impulses pass at the time keeper input. With the arrival of the next pulse from the generator 1, the operation cycle of the device is repeated. The invention The input device of amendments to the time keeper, containing a generator, the output of which is connected to a multi-line delay line, whose taps are connected to the first inputs of two-input elements And, the second inputs of which are connected to the outputs of the bits of the ring shift register, and the outputs; 33 OR elements are connected to the time-keeping input, two RS-flip-flops, the inputs of the first of which are connected to the correction signal signal buses, and the outputs are connected to the first inputs of two three-input And elements, the outputs of which are connected to the inputs of the ring shift register, the second inputs of the three-input And elements connected to the output of the second RS trigger, the S input of which is connected to the correction signal bus, and the R input of which is connected to the output of the counter, which is related to the fact that, in order to expand the range of values of the corrections introduced, The delay element and the additional OR element, whose inputs are connected to the outputs of the three-input elements AND, and the output are connected to the input of the counter, the third input of the first three-input element And directly, and the third input of the second three-input element And through the delay element connected to the input of the time storage. Sources of information taken into account in the examination 1. USSR author's certificate No. 618839, cl. H 03 K 3/64, 03.21.75. 2. USSR author's certificate number 617767, cl. G 04 F 5/00, 12.07.77.