JPS5815181A - Multi-function electronic timepiece - Google Patents

Abstract

PURPOSE:To make a user of a timepiece feel that <=2 pendulums seem to be operated simultaneously, and also to prevent its malfunction, by driving said pendulums in shifting the driving time each other. CONSTITUTION:When a pendulum turn-on signal 23 is outputted from a clock circuit 21, a pendulum driving signal forming circuit 23 outputs an intermittent driving signal by a timing by which <=2 pendulums are not driven simultaneously. Accordingly, a drop of battery voltage due to simultaneous driving of the pendulums is prevented, and also it is possible to make a user of the timepiece feel tht plural pendulums seem to be driven simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-function electronic wristwatch, and particularly to a multi-functional electronic wristwatch with a heavy load (f-sound output**, N4 light @ installation).

This relates to the method of driving an electro-mechanical converter.

The purpose of the present invention is to prevent malfunctions caused by a drop in power supply voltage when using a multifunctional electronic wristwatch.
Two or more heavy load drives are time-shifted to provide wristwatch users with two or more heavy load drive methods.

The sound output devices, lighting devices, and electrical-mechanical converters used in multi-functional electronic wristwatches usually require a thick +1 current when they are driven, so if two or more of them are driven at the same time, the inside of the battery that is the power source will be damaged. The power supply voltage drops due to the impedance, and there is a risk that the supplied voltage will be lower than the voltage required by the electronic circuit, causing the circuit or the load device to malfunction. Moreover, the internal impedance of the battery becomes larger as the temperature decreases, and the voltage drop becomes more severe when the same current is passed through the battery.

Recently, wristwatches have become thinner and smaller.

For this reason, batteries, which are the power source for electronic wristwatches, have also become thinner and smaller, resulting in an increase in internal impedance, increasing the risk of electronic wristwatches malfunctioning when used under heavy loads.

FIG. 111 shows fluctuations in the power supply voltage when driving heavy loads simultaneously using the conventional method.

In FIG. 1, 11.12#13 is a heavy load ON signal, and when the level is H, the heavy load is driven. Especially signal 13
is a drive signal for the sound output device. Further, 14 is the power supply voltage at that time, and 15 is the lowest operating voltage level of the circuit. Furthermore, the hatched area in the figure is the malfunction area of the circuit.

As seen in this figure, in the conventional system, when two or more heavy loads overlap, the voltage drop causes the power supply voltage to reach the circuit's minimum operating voltage level, causing malfunction. Currently, when heavy loads overlap, a method is used in which the critical functions are driven and the others are prohibited. However, if it becomes necessary to drive an electro-mechanical converter while driving a sound output device or a lighting device, this method does not require temporarily prohibiting the drive of the str device. It has the disadvantage that it gives a very unpleasant feeling to the auditory sense and visual sense to the user.

The present invention Fi solves such drawbacks and provides users with two
It has the same effect as driving two or more heavy loads at the same time, does not cause any audible or visual discomfort, and also prevents power supply voltage drops and eliminates circuit malfunctions. This provides a load driving method. Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 2 is a block diagram showing an example of the basic structure of the present invention.

In Fig. 2, 21F1 is a clock circuit, 22 is information for determining intermittent drive intervals and timing, 23 is a heavy load ON signal, 24 is a heavy load drive signal type bottom circuit that serves as a timing circuit, and 25 is a heavy load The drive signal, 264-, is heavily loaded.

FIG. 3 shows an example of the waveforms of the heavy load ON signal and the heavy load drive signal when this method is implemented in heavy load driving at the same timing as in FIG. 1, and the fluctuation of the power supply voltage at that time.

In Figure IIE3, Z3.25 is the same as that in Figures 2 and 151j, and 3'l is the power supply voltage at that time. It was. The 310 heavy load ON signal and that heavy load drive signal correspond, and the same goes for the respective signals of ``Proverbs'' and ``A'' and ``33'' and that.

The heavy load ON signal of B is input to 24 heavy load rectangular signal type discharge circuits. When the signal forming circuit determines that the single load ON signal is input, it outputs a signal with an appropriate intermittent interval. At this time, if two or more heavy load drives do not overlap, it is not necessary to use an intermittent signal as shown in the third figure. Thereafter, from when the first heavy load and the second heavy load become 1, signals are output that are alternately interrupted at timings such that both are not driven at the same time.

Furthermore, if the KIE30 heavy load Ofuki numbers overlap, an intermittent signal is output at such a timing that the champions are not driven at the same time. At this time, the most important factor that determines this intermittent cycle is the cycle of the signal for driving the sound output device, and other heavy-load drive signals become H when the drive signal of the sound output device is Loo. , *The period Fi of the intermittent drive of the heavy load device other than the sound output device is not particularly limited. Furthermore, it is also possible to change the period over time.

However, if the lowest sound frequency of the output from the 1till output device is approximately i, and if the intermittent drive in the lighting device does not visually look unnatural, that is, if the frequency that appears continuously is 110OH or higher, Considering that it is sufficient, the period Fi of intermittent drive of single load is
The most effective value is 1/110OH or less. Also,
When the drive signal of the electro-mechanical converter is an intermittent signal, I
As seen in Figure I'iga U, an effective means for preventing malfunction of the device is to extend the drive signal for an appropriate time with respect to the 1-load ON signal of B. Furthermore, O's heavy load O
It goes without saying that the signal does not have to be a signal like the one shown in Figure 3 of the N% number t'iag; the signal can be in any form as long as it indicates the start and stop of heavy load operation. If each heavy load is driven with a heavy load drive signal shaped like this, only one heavy load is always being driven to the power supply, so the power supply voltage □ drop is only one load. First, because the period of intermittent driving is short, the user feels as if two or more heavy loads are being driven at the same time, and there is no discomfort in hearing or viewing.

Figure 4 is an example of a heavy load drive signal type bottom circuit for realizing the first type.

In the fourth figure 1, 41 is a clock circuit, 43 is a clock for determining the period of intermittent driving, and 43 is a clock for determining the driving time of the electro-mechanical converter.

44 and 47 are the ON signal and drive signal of the electro-mechanical converter, respectively, and 45.48ij are the ON signal of the lighting device, respectively.
The signal and drive signal, 46.49 are the ON signal and drive signal of the sound output device, respectively, and 41 is shown in FIG.
42 and 43 are shown in Figure 222, and 44-46t! Figure 2 23K.

7- 47-49al1g2 h corresponding to FIG. 25, respectively.

The broken line in the diagram indicates that when the ON signal of the electro-mechanical converter overlaps with the ON signal of another heavy load, the 01 time of the electro-mechanical converter is approximately doubled, and if the ON signal overlaps, This is a circuit for transmitting the ON signal from the clock circuit. The remaining circuit is a drive signal type output path for each heavy load device, and generates an intermittent drive signal only when single load drives overlap. Figure 4rB) #i11! t4 figure 11
The timing chart illustrating this example is a vague one.

According to the mK method described above, it uses a simple circuit, and the user of an electronic wristwatch can feel as if two or more heavy loads are operating at the same time, eliminating discomfort. Moreover, since only one heavy load is always applied to the power supply, the power supply voltage drop is small and there is no possibility of malfunction of the electronic circuit. Moreover, since intermittent drive is performed, current consumption can be reduced.

[Brief explanation of the drawing]

Fig. 1 e Voltage fluctuation of t source 8 during heavy load driving using conventional method Fig. 2 Block diagram of basic configuration example of the present invention Fig. 3
Power supply voltage fluctuation during heavy load driving when the present invention is applied Figure 4 Figure 1 Example of heavy load drive signal type J circuit Figure 4 0
31...IE4 Figure 1 is a timing chart. Applicant Suwa Seikosha Co., Ltd. Agent Mogami Tsutomu 9-ss 12 Figure

Claims (1)

[Claims] 1. In a multi-function electronic wristwatch having two or more load devices among a small number of load devices (among them an audible alarm output device, a lighting device, and an electro-mechanical conversion device), each of the loads is driven intermittently. It has a signal type bottom circuit that generates a drive signal such that the signal type W
, the circuit uses the signal obtained from the signal to indicate that during the period when the first load device is in the driven state, the second and third load devices are in the non-driven state, and the first load device is not driven. The period Pfc112 and K is the period when the load device of sga is in the driving state, and the second column K is the period when the third load device is in the driving state and the relationship with other load devices is %. A multi-mat@electronic wristwatch similar to the above, characterized in that two or more load devices are driven at the same time by #I and A, which produce a tongue-like tie. 1-2. In the wide circuit configuration, the intermittent drive interval is set to 1/10.
0.011g or less and 2% allowance The multifunctional electronic wristwatch according to claim 1.