SU717711A1 - Electronic time-piece - Google Patents

Description

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The invention relates to electric clock technology and can be used to read and digitize the current time in digital form.

Electronic clocks are known that contain a generator of a reference frequency, a frequency divider, counters of units of minutes, tens of minutes, units of hours, tens of hours, a reset button and a preset clock, an indicator. In this device, the time can be pre-entered using the reset button and setting the time by sequential input of units in the hour counter 1. Synchronization of these clocks with the reference time source can be carried out at the moments of the end; VIA of every hour by exact time. When you press the reset button and the installation, all ten-day frequency divider is reset to-minutes counters inclusive in the zero position, the receipt of the pulse frequency generator in the sneKTpojj hours counters is blocked. When releasing the same button, the lock is removed from the frequency divider and at the same time one is added to the unit counter of the clock. From this moment, the clock starts to stop. The exact time ..

Tauim way, the time in these clocks can be set only to within a full hour, but the main disadvantage is that when synchronizing the clocks by the exact time signals, the operator is forced to press the reset button and the installation to block the operation of the frequency divider and part of the hour counters (usually and minutes) for a number of seconds preceding the synchronization moment. This lock will be longer, the greater the number of seconds this clock went ahead

from the standard.

The closest in technical essence to the invention is an electronic clock, containing a series-connected generator of the reference frequency. gate, frequency divider OR circuit, unit counters, in practice) In minutes, units of hours and ten hours, indicator and series-connected synchronization unit and correction trigger 2. A disadvantage of devices is the relatively long time required to set the time. The aim of the invention is to increase accuracy by speeding up the time setting. To achieve this goal, they provide an additional counter, a second OR element and a second valve, the output of which is connected to the second input of the first OR element and to the additional input of the counter, the output of which is connected to the reset inputs for counters of minutes and Tens of minutes and seconds. R-outr of correction trigger, direct output of correction trigger is connected to one of the second valve inputs, and the inverse output to the third input of the first valve and to the inputs of the first electric OR, the second input of which is connected to the output of the unit and time, and the output-.s reset input of the frequency divider, and a second input connected to the gate jBToporo vyho reference frequency generator. In addition, they contain a time setting block, consisting of a trigger of the encoder and time information input blocks, with an atom one output Connected to the second input of the valve, while others are connected, respectively, to unit counters and tens of minutes and hours. The drawing shows the structures on the scheme of the proposed electronic clock. The electronic clock contains synchronization unit 1, correction trigger 2, reference frequency generator 3, gates 4 and 5, frequency divider y, element CLI 7 and 8, counter 9, time setting block 10, including encoder 11, Enter one button minutes 12, trigger trigger 13, device for entering information about the time 14 and Buttons for entering time information 15, 16 and 17, counters of units 18 minutes, tens of minutes 19, units of hours 20 and ten hours 21, display unit 22. Synchronization unit 1, representing, for example, a scheme for selecting the onset of a pecTbtQ signal to The time transmitted by the radio network (if necessary, it can be replaced by a button) is connected to the trigger of correction 2, the inverse output of which is connected to the valve 4 connected between; the generator of reference frequency 3 and frequency divider 6. The same output of correction trigger 2 is connected to the reset input of frequency divider 6 via the element OR V, the direct output of trigger of map 3 is connected to valve 5, switched on between the reference frequency generator 3 and the element OR y The output of the valve 5 is connected to the counter 9. To the second, the input of the element OR 7 is connected to the output from frequency 6, l the output of the element OR 7 is connected to the input of the counter of units 18 minutes. The output of the counter 9 is connected to the reset inputs to zero of the correction trigger 2 and the counters of units 18 and tens of minutes 19. The outputs of the counters of units of 18 minutes, tens of minutes of 19, units of hours 20 and ten hours of 21 are connected to the display unit 22, and the installation inputs of the same counters are connected to the time setting block 10, which includes an encoder 11 connected to all devices By entering information about the time 14, and with three of them through the buttons for entering information about the time, 15, 16 and 17, and with one of them directly, to the second input of this time information input device is connected the inverse output of the trigger 13 which in its initial state carries the blocking potential. Another output of the trigger 13 is connected to the valve 4 and the reset input of frequency divider 6 through the element OR 8. To the installation inputs of the trigger 13, an input button 12 of minutes 12 is connected. The trigger 13 is in the initial state in the unit position. The device works as follows. In order to initially set the required time into the hour meters when the electronic clock turns on, it is necessary to perform the following operations in the installation unit. 10 steps; in any sequence, enter the value of the digits corresponding to the current or required rate in the meters dsh: minutes 19, units 20 hours and tens hours 21. Last digit is entered into the units counter minutes 18. For example, you must enter the time 13 hours 13 min Using the coaxial device 11, we dial 1f, since the electrical code of this number goes directly to all time information input devices 14 through the corresponding information input buttons 15, 16 and 17, it is sufficient to press the buttons ten co1 & 15 minutes to ten hours of hours 17 (sequentially or simultaneously), in order to record the units of Bi these counters. Then we dial the digit 3 on the encoder and press the input button for the unit 16 hours. When you press the unit input minute 12, the trigger 13 is set to the zero position: from its inverse, the resolving potential flows to the unit input unit minutes and 3, dialed on the encoder 11, the meter count is brought in units 18. From the direct output of the triggering trigger 13, the locking potential flows to the gate 4, resulting in the supply of high-frequency pulses from the generator of the reference frequency 3 frequency divider 6, and the same potential through the element OR 8. resets the frequency divider 6 in. zero. After releasing the unit 1 minute button, the trigger 13 returns to the initial unit state and removes the frequency divider 6 lock. From this moment, the times start to start and, if it coincided with the end of the minute of the reference time source, then this clock starts to go synchronously with them. After power on; electronic; hours and the initial time setting in the hour counters using the time setting block 10, the need for this block is no longer necessary, since in the proposed hours, the current time correction system allows the clock , these hours for the period between corrections have lagged or moved forward. Correction occurs as follows., Synchronization unit 1 on the sixth time signal transmitted at the end of each hour by the State Standard of frequency, frequency It triggers a triggering pulse that sets correction trigger 2 to one state, with a locking potential coming to its input 4 from its inverse output, and through the element OR 8, this potential sets frequency divider 6 to the zero state. At the same moment, from the first output of the correction trigger 2, the resolving potential is applied to the gate 5 and the high-frequency pulses from the generator of the reference frequency 3 through the gate 5 to the counter of units 18 minutes through the OR element 7. E bone counter 9 is selected numerically obviously longer possible variations in meter readings least significant bits of the digital clocks, e.g., seconds or minutes, in the period between correction in E. For example, if the clocks have to be adjusted once a week and during this time they go down by r minutes, then the capacity of the counter 9, equal to K, is chosen from the condition K P. When counter 9 overflows, the overflow pulse objects to correction trigger 2 to its initial state and cuts counters of units 18 and tens of minutes to zero. This blocks the lock from frequency divider 6 and simultaneously feeds high frequency pulses to the unit counter at the same time 18 bypassing frequency divider 6. Thus, the clock is automatically set to CO with the exact time. For example, the clock lags for 3 minutes between corrections, then let K 5, and the clock at 11 h 57 min G correction. Then, according to the time signal, correction trigger 2 is set to one, the valve 5 opens, and The moment 18 comes from the generator of the reference frequency 3 high-frequency pulses in the amount of 5, that is, the time is written to the counters for 12 hours 02 minutes, but at this moment the overflow pulse from counter 9 resets the counters of the minutes 18 and tens of 19 minutes to zero, and also sets correction trigger 2 to initial state, restoring the time from a value of 12 hours 00 minutes. If the clock was hurried for 3 minutes, then at the moment of correction, the time of 12 hours and 08 minutes will be recorded first, and then the counters of the units of 18 minutes and tens of 19 minutes will also be zeroed. And from that moment on, the time starts. With a counter capacity of 9, pa & 5, and the frequency of the reference frequency generator 3, equal to 1 MHz, the correction time will be 5 μs. Formula and 3 about b re t 0 n and 1. Electronic clocks containing sequentially included reference frequency generator, frequency divider, OR circuit, counters of units of minutes, hours of minutes, units of hours and tens of hours, the indicator and the sequentially included synchronization unit and the correction trigger, which are designed to increase accuracy by speeding up the time setting, they are equipped with an additional counter, a second element OR, and a second gate, which is connected to the second input of the first element OR and The output counter of which is connected to the outputs of the counters of the units of minutes and tens of minutes and connected to one of the inputs of the second valve with R-iyuhdsm KOpt KfiOrar direct output of the corrector switch trigger and the inverse output to the third input of the first valve. the first OR element, the second input of which is connected to the output of the Jimene unit and the output to the reset input of the frequency divider, the second input of the second valve connected to the generator output of the reference frequency, 2. The device according to claim 1, tl and a jo because it contains bl to set the time, consisting of the trigger input of the encoder and the time information blocks, etyM otWB output connected to a second input of the gate, and the other connected 1hrdy minutes, oootvetstveyno, the counters of units and sensors minutes and hours. Sources of information, when ttsu into account during the examination 1. Radio, 1974, No. 9, p. 23/2. Author's dat is walked {; tv according to no. 2655344 / 18-16, 2.02,79 (prototype).

Claims (2)

1. An electronic clock containing a reference frequency generator sequentially connected, a frequency divider _t OR circuit, counters of minutes, tens of minutes, hours and tens of hours, an indicator and a synchronization block and a correction trigger sequentially turned on, In order to increase accuracy due to the acceleration of time setting, they are equipped with an additional counter, a second OR element and a second valve, the output of which is connected to the second input of the first OR element and to the input of the additional counter, output which is connected to the reset outputs of the counters of units of minutes and tens of minutes and with the R-output of the correction trigger; The direct output of the correction trigger is connected to one of the inputs of the second gate, and the inverse output is connected to the third input of the first valve and to one of the inputs of the first OR element, the second input of which is connected to the output of the time setting unit, and the output to the reset input of the divider frequency, and the second input of the second valve is connected to the output of the reference frequency generator, K - - ..... 2. The device according to π, 1, with the fact that it contains a time setting unit, consisting of a trigger, an encoder and 15 time information input units, with one output connected to the second the input of the valve, and the other outputs are connected, respectively, to the counters of the units, n sensors of minutes and hours. ''