RU2152U1 - DIGITAL WATCH - Google Patents

Abstract

An electronic clock containing a pulse generator, a frequency divider, pulse counters, a first indicator, a power source and control elements, connected in series, characterized in that a second indicator is additionally introduced into the circuit and both indicators are controlled with the outputs of the same pulse counters, one of they have a liquid crystal indicator, and another LED, made with the ability to turn off during daylight hours and controlled at the same time through a buffer amplifier, the load of which it is.

Description

ELSH IS THICKNESS TO MSA

The utility model relates to time meters and can be used on electronic clocks for various purposes.

Currently, the industry produces only two types of electronic clocks: with indicators on liquid crystals or on LEDs. The main advantage of watches with indicators on liquid crystals is low energy consumption, therefore, the guaranteed continuous service life is determined by the service life of the power source (battery or accumulator .. ra) and is equal to at least I year. However, watches with indicators on liquid crystals have a significant drawback - in the dark, they require spevdal illumination of the scale to take readings of the current time, which is not always convenient.

An electronic clock with LED indicators has the drawback of this drawback, but consumes significantly more electricity (5-10W) and therefore is powered by an alternating current main.Therefore, when the mains voltage is disconnected without a backup power source (batteries), the current time is reset. the power source is 200 hours / I /, and when powered from the mains, the battery discharges independently through the load in 1.5-2 months. The cost of the replaced batteries during the year becomes comparable with the cost of the batteries themselves s and operation of such a clock is economically not viable.

GShK: 0040-9/00

The block diagram of the electronic clock is shown in figure 2 a) with a power source for one voltage, figure 2 b) with two power sources for different voltages in the electronic clock with LED indicators. The block diagram of the electronic clock contains a pulse generator I, frequency divider up to a period of 1 sec. - 2, counter of pulses with a period of 1 sec. 3-1, pulse counter with a period of 1min. - 3-2, pulse counter with a period of 1 hour. - 3-3, a pulse counter with a period of days of the week 3-4 and days of the month 3-5 for some watch models, indicator seconds. - 4-1, indicator min. 4-2, hour indicator. - 4-3, the indictor of days of the week 4-4 and days of the month 4-5 for some watch models, the power supply is low 5-1 or high 5-2 voltage giving different types of watches.

In some models of electronic watches with LED indicators, two power supply sources are used: low-voltage 5-1 for powering a crystal oscillator, a frequency divider and pulse counters and high-voltage 5-2 for powering an indicator with a buffer amplifier, Fig. 2 b). When high voltage is turned off information about the current time is not displayed.

When using a four-digit indicator in some watches, they can be equipped with additional devices for putting them into a stopwatch or timer mode (not shown in the block diagram) .In this case, the seconds are displayed by one or two blinking dots. In this case, the control voltage comes from the output of the frequency divider with a period of 1 sec. and the block diagram is shown in broken lines.

The claimed utility model is based on the task of obtaining continuous information about the current time in daylight on a liquid crystal display.

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and in the dark on the LED indicator, as well as reducing energy consumption by turning off the LED indicator in the daytime, if there is no need for its work.

The task is achieved in that the current time information for both indicators comes from the output of the same counters sec, min, hour, etc. to the liquid crystal indicator directly when it is powered from a common low voltage power supply supplying the pulse generator, the frequency divider and the pulse counter, and to the LED indicator through the buffer amplifier of which it is loaded, made on field-effect transistors, powered by the high voltage source while controlling its output voltage counters sec., min., hour. etc.

The supply (shutdown) of high voltage to the buffer amplifier, and therefore to the LED indicator, can be automatically generated by means of a photo relay or manually using a key.

Description of the utility model is illustrated by drawings, which depict: figure 1 - block diagram of the proposed watch;

Fig. Zo} is a block diagram of a produced watch with one power source;

figure 2-b) is a block diagram of a watch with an indicator on LEDs with two power sources.

The block diagram of the proposed watches contains a pulse train generator I, a frequency divider up to a period of I sec, - 2, a pulse counter with a period of I sec. - 3-1, a pulse counter with a period of I min. -3-2, a pulse counter with a period of I hour. - 3-3, the counter (s) of pulses with a period of I day to display the days of the week or month

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for various models of watches) (shown in dashed lines in the diagram) -3-4, 3-5, indicator on liquid crystals to display sec. 4-1, liquid crystal indicator for displaying min. - 4-2, an indicator on liquid crystals to display the time in hours -, an indicator on liquid crystals to display days of the week (month) for some watch models - 4-4, 4-5, a low voltage source 5-1 for powering the above devices hours. Additionally, the clock circuit includes a 5-2 high voltage power supply for supplying a sec display buffer amplifier. - 6-1 and seconds indicator. 4g-1a on LEDs, display buffer amplifier min. - 6-2 and indicator min. 4-2a on LEDs, a buffer amplifier for displaying 6-3 hours and a 4-ZA indicator on LEDs, as well as the controls, switching and signaling (proved on the block diagram), used from liquid-crystal watches with an indicator on liquid crystals.

The scheme works as follows. The pulse generator I produces a stable high-frequency electromagnetic field (stabilization is usually done by a quartz resonator). Positive (or negative) half-waves from the output of the generator I in the form of pulses arrive at: the input of the frequency divider 2, the output of which is divided into pulses with a repetition rate of I sec., Which are fed to the input of the ring 60-bit second counter or to the point indicator sec. for some watch models. From the output of the ring counter signal sec. goes to the liquid crystal display indicator of seconds. Directly, to the LED indicator through the buffer amplifier, the reset pulse of the ring second counter goes to the input of the 60-bit minute counter. From the output of the ring counter signal min. arrives

the load of which he is. The reset pulse of the ring minute counter is fed to the input of a 24-bit clock counter. The operation of the clock display circuit is similar to the operation of the display circuit of seconds and minutes. The reset signal of the ring hour meter can be input to the counter of the days of the week or days of the month in some watch models. The rest of the work of the proposed watches from manufactured by the industry does not differ.

The presence of two indicators allows the simultaneous supply of information about the current time and the time of installation of the alarm. References I. Desktop electronic clock. Operation manual.

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Electronics I3IIA,

Claims (1)

An electronic clock containing a pulse generator, a frequency divider, pulse counters, a first indicator, a power source and control elements, connected in series, characterized in that a second indicator is additionally introduced into the circuit and both indicators are controlled with the outputs of the same pulse counters, one of they have a liquid crystal indicator, and another LED, made with the ability to turn off during daylight hours and controlled at the same time through a buffer amplifier, the load of which it is.