SU1500986A1 - Electronic watch - Google Patents

Abstract

The invention relates to electronic equipment, in particular, to an electronic clock, and allows to increase the setting and to provide the ability to control an external device, as well as to increase reliability and reduce power consumption. The electronic clock contains a time counting unit 1, a display unit 2, a stroke adjustment unit 3, and a counter of 4 correction time intervals. The clock 7 includes an external device matching unit 7, an adjustment control unit 5, and a running error calculator 6. Blocks 7 and 5 together with block 1 provide automatic and / or manual on-off reception of accurate time signals from any type of radio equipment and installation of readings of exact time on them. At the same time, the calculator 6 and the counter 4 automatically change the value of the stroke adjustment coefficient, thereby increasing the correction time interval. 5 il.

Description

The invention relates to electronic engineering, in particular, to an electronic watch.

The aim of the invention is to simplify the setup and provide the possibility of controlling an external device.

FIG. 1 shows a block diagram of an electronic clock; in fig. 2- functional diagram of the electronic clock, which reduces their work; on . FIG. 3 - functional diagram of the controlled counter of the calculator of the error of the stroke; in fig. 4 is a comparison circuit; in fig. 5 is a functional block diagram of matching with an external device.

The electronic clock (Fig. 1) includes a time counting unit 1, a display unit 2, a stroke adjustment block 3, a correction time interval counter 4, an adjustment control block 5, a run error calculator 6, and an external device 7 matching block.

The electronic clock counting unit 1 (FIG. 2) contains a crystal oscillator 8, a shift register 9, a frequency divider 10, a counter 11.seconds, a minute change signal generator 12, a 13 minute counter, a hour change signal generator 14, a 15 hour counter and shaper 1.6 of the end of the day signal. For simplicity, FIG. 2 does not show other possible nodes of block 1,

The counter 4 correction time intervals (Fig. 1) is, for example, a 4 day counter (Fig. 2).

The adjustment control unit 5 (Fig. 2) contains the element 2 and 18 and i buttons 17 and 19.

The calculator 6 stroke error (Fig. 2) contains elements 4ILI 20, 2ILI 21, a controlled counter 22, comparison circuit 23, elements 2И 24-26, T-flip-flops 27 and 28, a counter 29 with a controlled division factor Element 2IL 30, counter 31, programmable read-only memory 32 (PROM), counter 33, element 4ILI 34, element 2I 35, one-oscillator 36. The circuit of controlled counter 22, built on chips K15IE6, is shown in FIG. 3a, the comparison circuit 23, built on integrated circuits (adders) K155IM1 in FIG. four.

Unit 4 coordination with the external device (Fig. 2 and 5) contains the node 37 receiving the exact time signals with the input 38 of the reception and the node 39

turning on the external device with control output 40.

The output of the quartz oscillator 8 (Fig. 2) is connected to the synchronization input of the stroke adjustment unit 3 and the first input of the element 2I 24, the control output of the stroke accuracy adjustment unit 3 is connected to the input of the frequency divider 10. Divider frequency 10,

counter 11 seconds, fop driver 12 minutes change signal, counter 13 minutes, shaper 14 clock change signals, counter 15 hours, shaper 16 day shift signals and block

2 displays are connected in series, and the information outputs of the meters 11, 13 and 15 are bit-wise connected to the corresponding inputs of the display unit 2. Shear entry

the register 9 is connected to the output of the time signal receiving unit 37, the first output of the register 9 is connected to the preliminary recording input of the controlled counter 22, the outputs 2-5 of the register 9 through the elements 20 and; 2IL21 is connected to the input of the Direct | Account of the counter 22, and the sixth output of the register 9 is connected to the second input of the element 2И24, the input of the one-shot

36 and control (reset) counter inputs 11 and 13 seconds and minutes, respectively. The control output of the time counting unit 1 is connected to the corresponding input of the matching unit 7 with an external device and, through element 2IL, is connected to the switching-on unit 39 of the external device (Fig. 5). Outputs. f counter 11 seconds connected to the information inputs D. ,, D,;, D, D ,, D, 5, Dji controlled counter 22, respectively, the outputs Q, Q, Q Qji Q "QM Qj counter 22 - to the corresponding inputs A , A, Hell, Ag, A, 4, Ajj ,, A comparison circuit 23, other inputs

b, b 2, b, bj, bn, vzg, b (which is connected in a corresponding way with the power source and the ground to create the binary code of the number 59. The output of the driver 12 of the signal

minute change - (the output of the adjustment period) is connected to the push-in input of the stroke adjusting unit 3, and the output of the imaging unit 16 of the end-of-day signal to the clock input of the counter for 4 days.

The information output of the stroke adjustment unit 3 is connected to the information input of the display unit 2 (shown by one bus) to display the value of the adjustment factor per day in the corresponding clock operation mode.

Comparison circuit 23, designed for comparison with the constant 59 of the seconds value of the current time, has three outputs, the first of which is the Match () connected to the sample resolution input of the EPROM 32, the count resolution enable input 33 and the first input of element 2IL 30J the second output Less than 59 () connected to the first input element 2 25 and the input of the T-trigger 27; the third output is greater than 59 (A B) connected to the first input of element 2 and 26 and to the input of the T-flip-flop 28

0

five

0

The element, 2I 18, the second input of which is the control input of the unit 5 for supplying control pulses and connected to the button 19, is connected to the control input of the stroke adjustment unit 3.

The functional diagram of the electronic clock (Fig. 2), made in accordance with the block diagram (Fig. 1), contains a block. 7 for coordination with an external device, an exact time signal receiving unit 37, for example a microphone amplifier with a Schmidt detector and trigger, and an external device switching unit 39, for example an infrared emitter (Fig. 5). Receive input 38 is in this case a microphone membrane, and control output 40 is infrared radiation.

: The electronic clock (Fig. 2) performs a regular (with a period of 1 min) adjustment of the accuracy of the clock in

Information outputs are 25 according to the originally recorded30

35

40

 4 days are connected respectively to the inputs V-, V, V, Vj, V f, V of counter 29 with a controlled division factor j. The counting input of this counter is connected to the output of element 2I 24, the second inputs of elements 2I 25.26 and the first input of the element 2 and 35, and the output of the counter 29 is connected to the counting input of the counter 31. The counter 31, the PROM 32, the counter 33 are connected in series with four tires (bits); In addition, the fifth input of the PROM 32 is connected to the output of the T-flip-flop 27, and the sixth output of the YPZU 32 is connected to the output of the T-flip-flop 28. The direct counting input of the counter 33 is connected to the output of the 2I 35 element and the information input of the adjustment unit 3 move. The output element 4IL 34 is connected to the second input element 2 and 35.

The output of the one-shot 36, designed to reset the T-flip-flops 27, 28, counters 31, 33, counter 29 with a controllable division factor (via element 2ШШ 30) and counter

4 days, connected to the R-inputs of the specified triggers and counters.

First control output of the unit

An adjustment control 5, connected to the button 17 and the first input of the element 2I.18, is connected to the control input of the reception unit 37 via the element 2ILI (FIG. 5). The second control output of the control unit 5 by the control unit to the control unit 3 of the stroke adjustment adjustment factor. When block 7 is turned on with an external device, the clock of the control unit 5 controls the reception of time signals to reset (synchronize) the counters for 11 seconds and 13 minutes at the beginning of the sixth signal, change the control coefficient stored in the stroke control block 3, according to the information in counter 22 by the time of the beginning of six inches in the EPROM 32 code, which takes into account the number of days counted by the counter 4 days from the time of the previous cycle of change of the adjusting coefficient coagulant and block off .sovani agreement at the end of the sixth signa-, la accurate time. In this case, it is possible to automatically synchronize the readings of seconds and minutes and change the adjustment factor for an absolute watch departure within the range of -55 s - +5 s. When additional hardware is introduced into the functional diagram of the clock (Fig. 2), the exact time setting range is significantly expanded. For example, if additional circuits are connected in parallel, identical to the controlled counter 22 and comparison circuit 23, connected to information outputs

55

according to originally listed

The adjustment factor in unit 3 for adjusting the stroke. When block 7 is turned on with an external device, the clock of the control unit 5 controls the reception of time signals to reset (synchronize) the counters for 11 seconds and 13 minutes at the beginning of the sixth signal, change the control coefficient stored in the stroke control block 3, according to the information in counter 22 at the start of the sixth

in the EPROM 32 code, taking into account the number of days, counted by the counter for 4 days from the time of the previous cycle of change of the adjusting factor, and the shutdown of the matching unit at the end of the sixth signal of the exact time. At the same time, it is possible to automatically synchronize the readings of seconds and minutes and change the adjusting factor for an absolute watch departure within 55 s - +5 s. When additional hardware is introduced into the functional diagram of the clock (Fig. 2), the exact time setting range is significantly expanded. For example, if additional circuits are connected in parallel, identical to the controlled counter 22 and comparison circuit 23, connected to information outputs

7

the counter is 13 minutes, the diazon is reached -55 min 55 s - + 5 min 5 sec. it is practically possible to leave the watch within one hour.

The removal (Fig. 2) is used, except as shown in Fig. 3 and 4, the following chips; K155IE8 (score 29 with controllable division factor); K155IE5 (counter 31); K155IE6 (counter 33); K155RE21 (PROM 32) and others.

The clock works as follows

After switching on the block 7 for coordination with an external device and the signal from the control control block 5, the precise time reception node 37 is in the Standby mode. The first exact time signal amplified by a microphone amplifier, detected and formed by a Schmidt trigger, from the output of receiving section 37, through register 9, from To output, enters input C of the recording resolution of the controlled counter 22, and the counter information is recorded for 11 seconds into counter 22; after that, four successive time signals coming from the K .j-K outputs. through the elements 4ILI 20 and 2ILI 21 n input +1 counter 22, respectively, increase this information. On the leading edge of the sixth signal from output K of register 9, the counter is reset for 11 seconds and the counter is 13 mi n. At the same time, the change in the adjustment coefficient for the stroke accuracy begins, as follows.

Logic 1., present at the second input of element 2И 24 during the entire interval of the sixth si

for example, 0.3 or 0.5 s, permits the passage of pulses from the output of the quartz oscillator 8 to the corresponding inputs of the elements 2I 25, 26 and the counting input of the counter 29 with a controlled division factor. With zero clock care at the first output of circuit 23 of comparison, the logical level 1 is immediately visible, since the information at the inputs A cxei-, we are 23 bits the same in this case with the constant 59, which is present at the inputs B of this scheme. At the other two outputs of the circuit 23 - the logic level O. Logic 1, which is fed to the R input of the counter 29, prohibits the counting of the pulse

86

eight

There are no pulses from the output of the generator 8 to the C input of the counter, and to the C input of the counter 31, which specifies the address of the EPROM 32 for sampling the change control coefficient code. Same level Log. 1 from the first output from Comparison Khemma 23 allows sampling from the EPROM 32 codes corresponding to the zero error of the clock, and presetting the counter 33, which in this case will record zero information, will be saved at the output of element 4IL 34 Log. Oh, and this will prohibit the passage from the generator 8 to the input +1 of the counter 33 and the information input of the unit 3 for controlling the stroke. The adjustment factor will remain the same regardless of the number of days counted by the counter for 4 days.

When the clock is gone, for example, -20 seconds within 10 days after the information 39 from the output of this counter enters the controlled counter 22, it is fed to the inputs A of the comparison circuit 23; from 5

0

0

5 0 5

the sixth signal level Log. 1 is present on the second output Less than 59, and on the other two outputs there will be a Log. O. HGogicheskaya 1 at the first input of element 2 and 25 permits the arrival of pulses from generator 8 to input 1 of counter 22, and Log. About on the R-input of the counter 29 allows the counting of the same pulses at the C-input. Counter 22 will receive pulses until a value of 59 (20 pulses) appears at its output, followed by a WitsLog at the first output of circuit 23. 1, and on the second and third outputs a log will be formed. Oh, which will prohibit further arrival of the quartz oscillator 8 pulses at the +1 of the counter 22 input. At the same time, 20 pulses will also go to the counter 29 with a controlled division factor, and from the output of the counter 29 to the C input of the counter 31 will go 10 times less ( according to the number of days), and after the appearance of the Log. 1, the first output of circuit 23 will allow the selection of the EPROM 32 to the address indicated by the counter 31 and the trigger 27. which will remember the appearance of the Log. 1 at the second output of circuit 23, i.e. three gager 27 carried out the formation of the mark

course errors

11 „h

Allowed

also pre-installation of the counter 33, in which the code from the EPROM 32 is written, moreover after the appearance of the Log. 1, at the output of element 4ILI 34, the receipt of pulses from generator 8 to input +1 of counter 33 is allowed up to full filling. The last indicated pulses are also fed to the information input of the stroke adjustment unit 3 and change the adjustment factor in accordance with the amount of the accuracy of the clock, taking into account the number of days counted by the counter 4 days.

Similarly, when the clock goes away, for example, +5 s for 5 days after the information 64 arrives at the controlled counter 22, the output 64 from the output of this counter is fed to the inputs F of the comparison circuit 23, and with the arrival of the sixth signal, the level Log. 1 will be formed at the third output greater than 59, which will allow the passage of pulses from generator 8 through element 2И 26 to input -1 of counter 22, and the level Log. About on the R-input of the counter 29 will allow the counting of these pulses on its C-input. The contents of counter 22 will be reduced to a value of 59, after which further flow of pulses will cease. At the same time, after the same number of pulses arrives at the C input of the counter 29, the C input of the counter 31 enters them 5 times less (in accordance with the number of days), and by level Log, 1 the sample of the EPROM 32 will be allowed at the first output of the comparison circuit 23 at the address indicated by the counter 31 and the trigger 28, which stores the state of the Log. 1 after the occurrence of such a level at the third output of the circuit 23, i.e., the trigger 28 forms the sign of the course error. The counter 33 records the code from the EPROM 32, after the appearance of the log. 1, the output of element 4ILI 34 allows the arrival of pulses from generator 8 to input +1 of counter 33 before filling it and to the information input of stroke adjusting unit 3, which changes the control coefficient stored in the RAM of this unit,

In all three cases, the trailing edge of the sixth signal coming from the output K, register 9, i.e. after the termination of the operation of circuits 21-34, the one-shot 36 produces a reset signal (Log. 1) T-flip-flops 27 and 28, the score

0

five

0

five

0

five

0

31, a counter 29 with a controlled division factor, a counter 33, and also a counter for 4 days.

In measurement and control operations, the value of the adjustment factor is established due to the presence in the control unit 5 of the adjustment of the control input connected to the second input of the element 2 and 18.

The control of the switch-on unit 39 is provided by the known means of programming the time for generating the corresponding signal contained in block 1 of the time counting and, for simplicity, not shown in the functional diagram (Fig. 2),

Claims (1)

Invention Formula An electronic clock containing a matching unit with a time signal receiving input, a time counting unit, a stroke adjustment unit, a correction time interval counter and a display unit, wherein the control input of the matching unit is connected to a control output of the time counting unit, the control input of which is connected to the control output of the matching unit, the clock input of the time interval counter is connected to the output of the time counting unit, the output of the adjustment period of which is connected to the clock input of the stroke adjustment unit, and the input adjustment - with the control output of the stroke adjustment block, the information input of the indication block is connected to the corresponding information output of the stroke adjustment block, the synchronization input of which is connected to the corresponding output of the counting block of time. different so that, in order to simplify setup and enable control of an external device, an adjustment control unit and a stroke error calculator and an output for connecting an external device connected to the matching unit are inserted, the first control output of the control control unit being connected to an additional control unit the input of the matching unit, and the second to the control input of the stroke adjustment unit, the first information input of the error calculator par.2 WITH / one five b 7 Ft. $