JPH0131986Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to the improvement of a watch that has a correction touch switch, and is particularly aimed at preventing malfunctions caused when two correction touch switches are touched by mistake. It is.

(Prior art) Conventionally, Utility Model Application No. 58-52824, Utility Model Application No. 57-
As in No. 162590, it has been proposed to use a touch switch consisting of only a transparent electrode disposed on a display cover glass as a correction switch for a watch. This is because it has the advantage of having far fewer parts than ordinary mechanical switches, and satisfies the requirements for watches that aim to be low cost and thin.

However, such a touch switch for correction,
Because it is made of transparent electrodes, it is difficult to see visually, and it is neither thick nor tactile, so users may accidentally touch not only the correction switch for the digit to be corrected, but also the correction touch switches for other adjacent digits. This often resulted in incorrect corrections.

(Purpose of the invention) The present invention has been devised in view of the above-mentioned conventional problems, and its purpose is to prevent erroneous adjustment of a timepiece having a correction touch switch.

(Structure of the invention) In order to achieve the above object, the present invention focuses on the fact that normally when adjusting a watch, adjacent adjustment touch switches are sequentially operated starting from the lower digit. When the touch switch is operated, if there is a touch switch for correction that was operated immediately before, it is assumed that the correction has already been completed and the operation is no longer necessary, and only the operation of that switch is invalidated. do.

(Example) An example of the present invention will be described below based on the drawings.
FIG. 1 is a display configuration diagram of a watch with a touch switch according to an embodiment of the present invention.

In the figure, from the left, AM and
PM display section 4, hour digit display section 6, 10 minute digit display section 8,
A minute digit display section 10 and a second digit display section 12 are arranged on the display cover glass at the bottom of each hour digit display section 6, ten minute digit display section 8, minute digit display section 10, and second digit display section 12. Transparent electrodes are provided for a touch switch 14 for correcting the hour digit, a touch switch 16 for correcting the ten minute digit, a touch switch 18 for correcting the minute digit, and a touch switch 20 for correcting the second digit, respectively, corresponding to each display section. Position display elements 22 to 28 indicating the position of each correction touch switch are provided on the display section 2 in the area where the transparent electrodes of each correction touch switch 14 to 20 are provided.

Further, on the cover glass at the left end of the display section 2, a transparent electrode of a touch switch 30 for preventing malfunction that controls the enable/disable of the operation of the correction touch switch is disposed, and in the same area as the transparent electrode of the touch switch 30, the touch switch 30 is disposed. A position display element 32 indicating the position of is printed.

FIG. 2 is a circuit diagram of a watch with a touch switch according to an embodiment of the present invention.

The oscillator 34 emits a reference signal for timekeeping,
The frequency divider 36 divides the reference signal into a 1Hz signal φ ₁
and a circuit that outputs a correction signal _φ2 .

Second counter 38, minute digit counter 40, 10 minute digit counter 42, hour digit counter 44, and AM/PM
The counter 46 receives the 1 Hz signal φ ₁ to operate the second, one minute, ten minute, hour, and AM digits of the time, respectively.
Count PMs. Between the second counter 38 and the minute digit counter 40, between the minute digit counter 40 and the 10 minute digit counter 42, and between the 10 minute digit counter 42 and the hour digit counter 44, a correction circuit 48 having the same configuration,
50 and 52 are inserted. Each modification circuit includes an AND gate 54, 56 and an OR gate 5, respectively.
The carry signal from the lower digit counter is input to the AND gate 54, and the correction signal φ ₂ is input to the AND gate 56.
A modified control signal B is input to the switching control inputs of the AND gates 54 and 56.

On the other hand, the second counter 38, the minute digit counter 40, the ten minute digit counter 42, the hour digit counter 44, and the AM/
Each count output of the PM counter 46 is output to a decoder.
The signal is supplied to each time display section of the display section 2 via the driver 60. Further, a correction control signal B via a driver 62 is input to the position display elements 22 to 28.

A display cover glass 64 that covers the display section 2
Each correction touch switch 22 to 2 arranged above
The signal from 8 is input to the capacitance detection circuit 66.
This capacitance detection circuit 66 is a circuit that detects a change in capacitance due to a touch operation on a transparent electrode and outputs an "H" signal _. is input to the clock input φ of the FF 70 via the trigger circuit 68. The Q output of the FF 70 is the modified control signal B, and therefore, each time the user touches the switch 30, the Q output of the FF 70, that is, the modified control signal B, is inverted to "H" or "L".

On the other hand, the operation signals A ₂ to _{A 5} of the correction touch switches 14 to 20 via the capacitance detection circuit 66 are input to an AND gate group 72 . A modified control signal B is input to the control input of this gate group 72, and the operation signals _A2 to _A5 are valid only when the signal B is "H".

Operation signals A ₂ to _{A 5} via AND gate group 72
is input to AND gates 76 to 82 in gate circuit 74. The gate circuit 74 is a circuit that uses signals from a double operation detection circuit and a memory circuit, which will be described later, to invalidate previously operated touch switches when they are operated simultaneously. AND gates 76 to 80 are the outputs of NAND gates 84, 86, and 88, respectively.
F ₁ to _{F 3} are input, and the output F ₄ of the inverter 90 is input to the AND gate 82 . And correction digit selection signals from AND gates 76 to 82
Of D ₁ to _{D 4} , only signal D ₁ is supplied to reset input R of second counter 38 via trigger circuit 92, and signals D ₂ to _{D 4} are input to correction circuits 48, 50, and 52, respectively.

The double _operation detection circuit 94 is _a circuit that detects that _two correction touch switches are touched at the same time _. It consists of an AND gate 98 and an AND gate 100 into which operation signals _A3 and _A2 are input. and gate 9
The detection signals C ₁ , C ₂ , C ₃ from 6, 98, 100 are input to NAND gates 84, 86, 88, respectively.

The memory circuit 102 always stores which correction touch switch was touched immediately before the malfunction prevention touch switch 30 is operated to enable correction, and then until the switch 30 is operated again and correction becomes impossible. The detailed circuit is shown in FIG. The circuit 102 consists of a correction end detection circuit 103 and a correction storage circuit 105, of which the correction storage circuit 105 is
110, OR gates 112 to 116, and the correction completion detection circuit 103 includes inverters 118 to 12.
4. Consists of trigger circuits 126 to 132. this
Inverters 118 to 12 are connected to each clock input φ of FF104, 106, 108, and 110, respectively.
4. Correction digit selection signals D ₁ , D ₂ , D ₃ .D ₄ are input via trigger circuits 126 to 132. and
The OR gate 112 to which the output of FF70 and the correction digit selection signal D ₂ are input is input to the reset input R of FF 104, and the OR gate 114 to which the output of FF 70 and the correction digit selection signal D ₃ are input is input to the reset input R of FF 106. are doing. moreover
The reset input R of the FF 108 receives the output of the FF 70 and the OR gate 116 which receives the correction digit selection signal _D3 , and the reset input R of the FF 110 receives the output of the FF 70. And each
Storage signal _G1 which is each Q output of FF104-108
~ _G3 is input to NAND gates 84, 86, and 88, and storage signal _G4 , which is the Q output of FF 110, is input to inverter 90.

The operation of this circuit will be explained below with reference to the time chart of FIG. 4 and the operation diagrams of FIGS. 5 to 9.

When the time is not being adjusted, as shown in FIG. 5, the position display elements 22 to 28 in the adjustment touch switches 14 to 20 are turned off, and the correction control signal B at this time is "L". Therefore, the AND gate group 72 is in an open state, and no correction is made even if the user touches the correction touch switches 14-20.

However, when the user touches the malfunction prevention touch switch ₃₀ at time t ₁ as shown in FIG. Also becomes "H". As a result, the position display element 22~
28 is lit, and the AND gate 5 receives the carry signal from the lower digits in the correction circuits 48, 50, 52.
4 is in the closed state. Then, the AND gate group 72 is opened and the correction touch switch 14 is turned on.
~20 is valid. In addition, since the output becomes "L", FFs 104 to 11 in the memory circuit 102
Cancels the 0 reset.

At the subsequent time _t2 , as shown in FIG. 7, when the user first touches the seconds adjustment touch switch 20, the operation signal _A5 becomes "H".
The signal A ₅ is input to the AND gate 76 in the gate circuit 74, but at this time, the storage signals G ₁ to _{G 4} and the detection signals C ₁ to _{C 3} are all “L”.
The outputs of the NAND gates 84 to 88 and the inverter 90 are "H", and the AND gate groups 76 to 82 are all in the open state. For this reason, the correction digit selection signal
_D1 becomes "H", and the trigger circuit 9 recognizes this.
2, a positive single pulse is generated to temporarily reset the second counter 38. As a result, the display on the seconds display section 12 becomes "00". Also, correction digit selection signal
At the same time that _D1 becomes "H", the storage signal _G1 , which is the Q output of the FF 104, becomes "H".

At time _t3 after this second reset, the minute digit correction touch switch 18 is turned on as shown in FIG.
When you touch , the operation signal _A4 becomes "H",
Input to AND gate 78. As a result, the correction digit selection signal D ₂ becomes "H", and the AND gate 56 in the correction circuit 48 is opened to supply the correction signal φ ₂ to the minute digit counter 40 to quickly correct the minute digit.
At the same time as this correction is completed, the correction digit selection signal _D2 becomes FF1.
Set the storage signal _G2 , which is the Q output of 06, to "H",
Set the Q output of FF104 to "L".

After this, touch switch 16 for 10 minute digit correction,
If you touch the hour digit correction touch switch 14, the 10 minute digit and hour digit will be corrected, and when the 10 minute digit is corrected, the Q of FF108 will be displayed instead of FF106.
When the output becomes “H” and the hour digit is corrected,
The Q output of FF 110 becomes "H" instead of FF 108.

In this way, the memory circuit 102 always remembers which correction touch switch was operated immediately before, and operates so that the memory signal corresponding to that switch becomes "H".

However, at time _t4 after the second and minute digits have been corrected, as shown in FIG. When touch switch 18 is touched, operation signals A ₄ and A ₃ become "H" at the same time and are input to AND gates 78 and 80. However, at this time, the detection signal _C1 of the AND gate 96 of the double operation detection circuit 94 becomes "H",
Together with the storage signal G ₂ of "H" from the storage circuit 102 described above, the output F ₂ of the NAND gate 86 is set to "L". As a result, only the correction digit selection signal _D3 is “H”
Therefore, the 10-minute digit is corrected. Also, when the 10-minute digit correction is completed and the correction digit selection signal _D2 falls to "L", the Q output of FF108 is output in place of the Q output of FF106.
The output storage signal _G3 becomes "H".

If you then touch the hour digit correction touch switch 14, the hour digit will be corrected.
Even if you touch the 10 minute digit correction touch switch 16, it will not affect the 10 minute digit. At this time as well, after the correction is completed, the signal _G4 becomes "H" in place of the storage signal _G3 . Also, if you accidentally touch the second touch switch when attempting to correct the minute digits after resetting the seconds, only the minute digits will be corrected. At this time as well, after the correction is completed, the signal _G2 becomes "H" in place of the storage signal _G1 .

As described above, according to this embodiment, when two correction touch switches are touched at the same time, if there is a correction touch switch on which a correction operation was performed immediately before among the touch switches being touched, the correction is performed. By disabling the touch switch, it is possible to prevent the time that has been painstakingly corrected from being accidentally messed up.

In this embodiment, it is configured to detect only when two adjacent correction touch switches are operated at the same time, but it is configured to detect when three or more correction touch switches are operated at the same time. This is also possible.

(Effect) As described above, according to the present invention, when two or more correction touch switches are operated simultaneously, if there is a correction touch switch on which a correction operation was performed immediately before, the correction touch switch By disabling the tactile switch operation, even if the user accidentally touches the tactile switch when correcting the next digit when the time has been corrected by previous adjustment, the erroneous adjustment will not be made. This digit has the advantage of being able to be corrected again without having to go into non-correction mode and then into correction mode.

[Brief explanation of the drawing]

FIG. 1 is a display configuration diagram of a watch with a touch switch according to an embodiment of the present invention. FIG. 2 is a circuit diagram of a watch with a touch switch according to an embodiment of the present invention. FIG. 3 is a detailed circuit diagram of the memory circuit of FIG. 2. FIG. 4 is a time chart showing the operation of the circuit of FIG. 2. 5 to 9 are operation explanatory diagrams showing the operation of the touch switch watch according to the embodiment of the present invention. 2... Display unit, 14, 16, 18, 20... Touch switch for correction, 48, 50, 52... Correction circuit, 74... Gate circuit, 94... Double operation detection circuit, 102... Memory circuit.

Claims (1)

[Scope of utility model registration request] A correction touch switch consisting of a transparent electrode is arranged on a display cover glass covering the time display section in correspondence with each time display digit, and by touching each correction touch switch, time is measured at the corresponding time display digit. A correction circuit that performs correction by supplying a correction signal to a time counter, and a correction end detection circuit that detects disappearance of a touch operation signal from the correction touch switch; a correction memory circuit that retains the detection signal and erases the detection signal held when the touch operation signal of another correction touch switch disappears; and detects that two or more of the correction touch switches are touched at the same time. a double operation detection circuit,
When one of the touch operation signals of the correction touch switch which is double operated by the detection signal from the double operation detection circuit corresponds to the detection signal held in the memory circuit, that touch operation signal is invalidated. A malfunction prevention device for a touch switch for correction, comprising a gate circuit.