JPS5814433A - Device for preventing erroenous operation of touch switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a malfunction prevention device for a touch switch, which can prevent a touch switch from sending a malfunction signal to a device to which the touch switch is connected.

Touch switches are now well known and can be used to output a desired control signal through a touch operation by the user's finger or finger.
It has been put into practical use in various devices. These touch switches are suitable as on/off switches for electrical control equipment, such as keys on clocks or calculators, and can reliably obtain control signals with a small amount of operating force, and are extremely durable. It has the following advantages. In the case of an overcurrent, this type of touch switch has a structure in which electrodes placed adjacent to each other are covered with an insulator, and both electrodes are electrically connected by the user's finger or the like. A switch structure can be adopted.

As shown in #I, the touch switch is suitable as a switch that is used frequently, and by using the touch operation as the device case frame or display img.
! It has the advantage of being able to be placed under a small lid.

For watches, etc., the touch switch should be pressed at 1%.
When placed in the alII display 1i11C, the touch switch is closed when the time is indicated due to overvoltage, but if necessary, the position is displayed using a crystal display, etc. 1.4 Time adjustment switch It becomes possible to use it as
Its usability is extremely low.

However, with the touch switch from 1g1, III!
A control signal is output only when the user's finger touches the switch, and even if there is no intention to operate the switch, for example, when the user is carrying the device or touching the device by mistake, the control signal is output. is output.

When used as a correction switch in a watch or the like, it may cause erroneous operations such as the indicated time being incorrectly corrected.

FIG. 1 shows a conventional device in which a touch switch for time adjustment is incorporated into a digital display clock, and a desired correction effect on the pupil side can be obtained by touching a touch switch 12 for large correction provided on the clock face 10. However, if the Km user's finger carelessly touches the touch switch 12 when selecting the position of the trout meter, as shown in Sa', the time indicated on the watch will be incorrectly corrected. .

This type of erroneous operation can cause calculation errors not only in watches but also in calculators, etc., and it can also cause malfunctions in on/off switches, which are often used in many devices. This has caused problems such as devices being turned on and off against the user's will.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to reliably prevent erroneous operations contrary to the user's intention, and to provide an improved nine-touch system that does not output erroneous control signals. To provide a malfunction prevention device for switches.

A ninth aspect of the present invention to achieve the above object is to form a set of operating touch switches by a plurality of touch switch elements arranged adjacent to each other independently.

It is characterized in that when each touch switch element of the operation touch switch is touched at a predetermined time within Kt&, a signal is output from K.

A preferred embodiment of the present invention will be described below with reference to FIG. 1iK.

FIG. 2 shows a ts1 embodiment of the invention, in which a touch switch is provided for correcting a liquid crystal display clock.

The time indication signal of the clock is obtained from the reference oscillation signal of an oscillation circuit 140 including a crystal oscillator, etc., and this oscillation circuit 140 divides the frequency of this oscillation signal into a desired frequency by a frequency dividing circuit 16,
It is counted by the time counter 20 and the time counter 20, which is converted into a time indication signal by the digital display 22 and displayed by the i[crystal d channel 24].

゛Liquid crystal/4 channel 24 has a cover glass 2 on its tII side.
6 is arranged, and the instructions on the liquid crystal panel 24 are read by looking through the cover glass 2'6. A switch for adjusting the time is incorporated as a touch switch.That is, at the lower end of the cover glass 26, there is a first touch switch element 28a on the left side, and a second touch switch element 28a on the right side. A switch element 28kl is arranged, and a set of operating tweezers 28 is formed by both tweezers switch elements.

- In this embodiment, each of the operating touch switches 1] works as a time adjustment mode switch, and each touch 1, 1, 1, 1, 2, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 and 3 each of the operating touch switches 1 function as time adjustment mode switches, respectively. Acts as a minute correction switch.

`` ゛'' Both touch switch elements! Position and order indications sea and 5olr are set at the positions of the liquid crystal panel 24 corresponding to 5ILL and 28D, respectively.
It is always specified and displays the order of major operations.

In the example, each table/indication SOa'',
Modified on the right side of sob'll111I show 32 turtles! 32b is provided, and a touch switch 34 for canceling correction is provided at the upper right end 11 of the glass 2, and when this touch switch s4 is operated on the flip side, the watch is switched from the time correction mode. The touch switch 34 for canceling the correction can return to the energization 0 time instruction mode 1'.
The position indicator 3 is displayed on the LCD panel 24 at the position corresponding to
As shown above, the cover glass i6 in the embodiment is made up of two transparent poles, and is outside itself. Nell 24 #) It can be said that the design is designed to protect Yu Maki.

A characteristic feature of the present invention ti4 is that the operation touch switches 2 and 2 are arranged independently and adjacent to each other and include nine touch switch elements 211 &, *@b,
This K allows the desired touch operation, l! ! In the example, both touch switch elements 28 a, 2 l b are connected at a predetermined layer thickness within a predetermined time to select the time adjustment mode.
must be operated by touch.

The outputs of both switches are supplied to an operation determination circuit 311 in order to determine whether or not the touch switch 2I for operation is touched within a predetermined time and in a predetermined sequence to form a circle. The operation determination circuit 38 is a Tsuritsunofrog (hereinafter referred to as yy) to which the outputs of both touch switch elements 211a and zsb are supplied.
ioa, 4ob included, @1 touch switch element 28
The output of 1 is directly supplied to 51!1's yy4/turtle clock human power.

The output of the touch switch element 21b of the front jI2 is
ν40 Turtle's q output along with Ann r? -) 42 to the clock power of the second νF49kl. Then, the second yy4obI)q output is sent to the operation determination circuit 38.
It is output as a normal operation signal from ANDr-)44.
4- as a correction mode switching signal.

Therefore, according to the operation determination circuit 31 in the embodiment, the first 11408 is activated first, and when the next Kjl 11401) is activated in this operation state 11, a normal operation signal is output from k. It is therefore understood that the correct operating layer thickness is required.

In addition, the operation discrimination H bribe 38 has both touch switch elements zsa
, zsb is requested to be performed within a predetermined time, in the example, within 3 seconds, and the first Pr
Q ratio output yff for 2O3? ” is supplied to the 3-way counter io through the 3-way counter SO, and its q output is supplied to the 9 sets of 1140&f) from the ort st.Before, the reset input of the 3-way counter SO 4
The q output of 01L is supplied via the inverter s4. Therefore.

After 3 seconds elapse after the first yy46a is activated,
Since the input Pr4O1 is set to 94 by the ternary kakunta sO and its q output is switched to rl, even if the AND gate 42 is closed and the touch switch element 28b is touched after the predetermined time has elapsed, the normal operation signal is not output. is never output.

In addition, the normal operation signal of the operation discrimination circuit 38 is activated after the time adjustment mode is switched to 38, so that the adjustment operation is not corrupted. In order to return to 'shi, this', the normal operation signal is supplied to the 10-way kakunta 58 via the AND dart 56, and its q output is passed through the OR r-) 60 to the #! 2 reeds 4
By supplying the ob reset manual power, for a predetermined time,
In the preferred embodiment, automatic mode reversion occurs after 10 seconds have elapsed.

First, the normal operation signal of the operation determination circuit 3s is supplied as a correction mode switching signal to the tIJ correction digit display 11, and in the correction mode, the faulty correction digit is displayed. The correction mode switching signal for the first and second positions is supplied to the position and order indicator SOB via the inverter 62, and the previous one indicator SOB can be turned off when switching to the correction mode.・Furthermore, the correction mode switching signal is sent to inverter 4 and r-) f
Location and station order display via i6 and ordart 68
It is also supplied to ea, and the other input of ANDp-) 66 is 1F? of ts1. 40a#)c4 output is supplied and the display sea is turned off when changing the correction mode, and the other input of the ordart 68 is supplied with andr-)7
By supplying the q output of the PF 40a and the clock input for blinking (via the first IF via the l), the display 3G &
It becomes possible to obtain the point function of

As mentioned above, when the touch switch elements zsa and zsb are operated at a predetermined interval and order, they act as a correction mode switch, but after the time correction mode is selected, each The touch switch elements 28a, 8b act as hour and minute correcting switches, respectively, and for this purpose both switch outputs are connected to the hour counter via the &f-) 44°46 and the or-r-) 71.74, respectively. 20 and the noodles were served at the minute counter 1s.

The content of each counter 20.1s can be corrected for each touch operation on each touch switch element 2a&28. Then, this operation output is further supplied to the 10 overkakunta 11i1 via ORr-)7@,
By resetting the counter S$, automatic mode return can be prevented. The q output of the second νF49t) is further supplied to this OAG)7@, and the contents of the counter 5- are reset when the correction mode is completed.

The first embodiment of the present invention has the above configuration, and the third embodiment is as follows.
The effect will be explained with reference to ~8m.

Figure 3 shows the normal 1s true state, and the ii crystal delta channel 2
The desired time is indicated on the display screen of No. 4, and in Example II, "
``@12:38 p.m.'' is displayed.
In 1I and 11iK, only the rounding position for selecting the 1 time correction mode and the layer thickness display son and sob are shown.

K to select the time adjustment mode from this state.

In this example, the touch switch elements sa and zsb must be touched in a predetermined order and within a predetermined time, and the happy 4 WIJK is first happy! A state in which the touch switch element 28& is touched is shown, and as a result of this touch operation, the first 11406 in the operation discrimination circuit 3$ for a happy intention outputs a q signal representing mouth 1. Therefore, andr−)T.

and orr-) is I, the IR indicator 5eaK is supplied with a blinking signal, and I'm happy! ! IHc As shown,! !
The indicator sob starts blinking.

Then within % predetermined time, in the example 3 seconds.

As shown in FIG. 6, the third touch switch element 2
・B is touch operated and stone and 1FF40 of Yuki 2 in Figure 2
116 & the q output of the first shaft y46a is inverted, and the q output is sent to the operation discrimination circuit 3 as a normal operation signal.
Output from $. As a result.

imagII□3rd゜,,3゜1. Yo□51, wa “
The correction digit display 32 lights up, and each touch switch element 2
11&, 21'b are each display 32&, 32 as shown in FIG.
m) Fitted as hour and minute correction switches from K, and at the same time touch switch for correction release at position 36
is also in a repeating state.

With the above correction mode selected, if you touch the touch switch element 2 of jI2, for example, as shown in the gS diagram, the corresponding display will be corrected each time. It is understood that the minute digits are corrected to "39 minutes."

As described above, according to the example in s, it is possible to enable a desired time adjustment mode only by touching the two touch switch elements 211L, 281) in a predetermined order within a predetermined time. .

Make sure that only one touch switch element 21Kli1 malfunctions when you touch it with your finger! This makes it possible to prevent .

FIG. 9 shows a second embodiment of the present invention, in which operating touch switches each having a plurality of touch switch elements as a set are provided for each hour digit and minute digit.

In the embodiment, there are three touch switch elements 78a.

Tab and VSa form an operating touch switch rstfi for the hour digit, and similarly, three touch switch elements 8, tortoise, sob, and 5ocK form an operating touch switch 5atfi for the minute digit.

The outputs of the two-way touch switches ys and go are supplied to an hour operation discrimination circuit $2 and a minute operation discrimination circuit 84, respectively, and correction signals are supplied from each discrimination circuit to the hour counter 20 and minute counter 18.

No. 10511 shows the circuit configuration of the hour operation determination circuit 83, and since the one minute operation determination circuit a4 has a similar configuration, only the circuit 82 will be explained in detail below.

1011, each touch switch element 78a;

78k),? 11 (outputs from ! are 11■ each).

These sears 86 are connected in series, and the q output of the first stage 11 sea is connected to the output of the touch switch element 78b and p=
−)8g to the next 5tys·1 clock input, and similarly Kyy@sb is supplied to the most II through ANDe−)·O.
It controls the four inputs of the I & stage vvssa. Then, the q output of the highest stage ν1SaC is the delta pulse conversion circuit 9! The signal is outputted from the operation determination circuit lI2 as a normal operation signal via.

1. One set of touch switch elements 7$ for a predetermined time.

In the example, in order to set the condition that the operation is performed within 2 seconds, the operation determination circuit is provided with a binary counter 94, and the output of ppssatl) is outputted via an AND gate 96 to the 2-over counter 4. is supplied to the q input, and its q
The output is supplied from the ort 98 to the reset power of the final stage IPPII@e.

(9) Final stage rν8scf) Q output is binary counter 94
Supplied with reset human power: 5 and 1 route 92
The output of P is passed through the delay circuit 100 and OR
It is supplied to the reset human power of P8@O.

As described above, in the second embodiment, each of the touch switch elements 78 and 80 is operated in a predetermined order within a predetermined time, in the embodiment, the touch switch elements 78 and 80 are operated in a predetermined time according to the right-pointing arrow indicated on the liquid crystal panel 24. As shown in FIG. 11, a predetermined normal operation signal is output for the first time after one operation. What is shown?

The input signal obtained from one key press of the calculator is subjected to a desired operation by the arithmetic circuit 104.

'CII is shown in the fresh water section 10@. A power source 11tos such as a battery or the like is provided to operate each of the tII notes, and a touch switch 110iI for operation consisting of two touch switch elements 110% and 110b is provided for each key door 102. ! - is provided, and its output is determined by the operation discrimination circuit 11 Bc as to whether it is a normal operation or an abnormal operation El! IJ, and the power supply voltage from the power supply 101B to each part during normal operation is determined by the circuit 11! supplied through the The operation determination circuit 112 is supplied with the output of the off switch 114 of the life port 10, so that it is possible to forcibly turn off the power as in the conventional case. In addition,
The oscillator Ii circuit 11@if (power supply voltage is always supplied from the power supply 108'), and the output of the scissors oscillation circuit 11- is supplied to the controller 104.

FIG. 13 shows the internal configuration of the operation determination circuit 112,
Since the circuit configuration is substantially the same as that of the first example, the same members are given the same reference numerals and the explanation thereof will be omitted.

In FIG. 11, the basic discrimination circuit is the same as that in FIG. 2, but the operation time interval of each touch switch element 110 is set to 2 seconds in the third embodiment, and a two-way counter 50 is used for this purpose. It is being The output of the touch switch 114 for men is supplied to the human power for resetting the M91 car νν40.

As is clear from FIG. 13, the operation determination path 112 is provided with an M08 transistor and a star 118.

The operating touch switch 11.0 was operated correctly and at 9 o'clock,
This transistor 118 turns on, and it becomes possible to supply voltage from the power supply 10Ji to each part.

As explained above, according to the single sensor 114, even if a touch switch is accidentally touched while carrying a device, such a malfunction can be reliably detected.

If you disable the output of the touch switch, you can be sure that the device will malfunction! This makes it possible to prevent

[Brief explanation of the drawing]

Figure 1 is an external perspective view of an hour hand incorporating a conventional operating touch switch. FIG. 12 is an explanatory diagram showing a first embodiment in which the malfunction prevention device according to the present invention is incorporated into a digital fresh water watch. 3 to 8 are explanatory diagrams of the operation of the embodiment. FIG. 9 is an explanatory diagram showing a second embodiment of the present invention. FIG. 10 is an operation determination circuit diagram of FIG. 9. Figure tIX11 is an explanatory diagram of the action of the second practical example. FIG. 12 is an explanatory diagram of part 11 showing a third embodiment of the present invention in which the malfunction prevention device according to the present invention is incorporated into a calculator, and FIG. 13 is an operation discrimination circuit diagram of the third embodiment. 28--Touch switch for operation. 2B&...-$11 touch switch element. 2 m b-knee second touch switch element. 3 B --- Operation discrimination circuit. 78...Touch switch for operation, ysa, 711b, rso-fiyfx4ff. 80--Tesswitch 1 for operation. 5oe-is action touch switch bulky element 82 -- Time operation explosion discrimination circuit. 11Q...Touch switch for operation. 110a, 1101)--Touch switch element. 112... Operation determination circuit. 1E 1 Figure 3 Figure 4-Figure 5 Figure 6 Figure 8WJ Figure 1I Figure 13

Claims (1)

[Claims] (1) A set of touch switches for operation is formed by a plurality of touch switch elements arranged independently and adjacent to each other, and a touch switch for operating scissors is provided. A malfunction prevention device for tatsu-sui and tsu-te, characterized in that a touch switch element is set within a predetermined time and outputs a signal when the touch switch element is operated in a sequence of nine steps.