JPS641680Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention has a plurality of other function modes in addition to the basic clock mode, and also changes to the basic clock mode after a predetermined time from a mode other than the basic clock mode. The present invention relates to an electronic watch having an automatic return device that automatically returns to normal mode.

[Prior art]

Conventionally, when switching from the basic clock mode to another mode, such as an alarm mode, using a mode changeover switch, the display state changes to the display of the switched mode, but when a predetermined period of time has elapsed from the time of this mode switching, the basic clock Some models were equipped with an automatic return device that automatically returned to the current mode. In this case, a mechanical switch or a touch switch is used as the mode changeover switch.

[Problems with conventional technology]

When a touch switch is used as a mode changeover switch, unlike when a mechanical switch is used, a user who wears an electronic watch on his or her wrist may unconsciously turn on the touch switch when, for example, the user folds his or her arms. The current setting mode often shifts to another mode. When the automatic return time to the basic clock mode is set for a long time, other modes may be displayed without the user noticing, which may make the user feel strange when looking at the clock, or when they want to know the current time. There were problems such as not being able to immediately know what was going on, and having to operate a switch to recover.

[Purpose of invention]

This idea was made to solve the above-mentioned conventional problems, and its purpose is to:
To provide an electronic timepiece that can smoothly automatically return to a basic timepiece mode when switching modes, especially when a touch switch is used.

[Key points of the idea]

When both a touch switch and a mechanical switch are used as a mode changeover switch, the automatic return time of the touch switch to the basic clock mode is shorter than the length of the automatic return time of the mechanical switch. be.

〔Example〕

Hereinafter, one embodiment will be described with reference to the drawings. In FIG. 1, an oscillation circuit 1 oscillates and divides a fundamental frequency signal, outputs a signal with a frequency of 1 Hz, and supplies the signal to a clock circuit 2 and a stopwatch circuit 4, respectively, for time measurement. The clock circuit 2 counts the 1 Hz signal to obtain current time information, and provides the current time information to the display switching circuit 5. The alarm circuit 3 stores an alarm time, and this alarm time information is given to the display switching circuit 5. Further, the alarm circuit 3 is supplied with current time information from the clock circuit 2, and when it coincides with the alarm time, a coincidence signal is given to the sound alarm device 7 to cause it to perform a sound alarm operation. The stopwatch circuit 4 performs timekeeping operation using the above 1Hz signal, and the timekeeping information is sent to the display switching circuit 5.
is given to.

Each input side of switches S ₁ , S ₂ , and S ₃ is grounded (“0”
level), and each output side is connected to a switch control section 8, respectively. Then these switches
S ₁ , S ₂ , and S ₃ are all provided on the surface of the watch case, and switches S ₁ and S ₃ are touch switches, and switch S ₂ is a mechanical switch (a mechanical switch such as a push button). Among these, switch _S1 is used for fast forwarding the set time when setting the time in each mode. Further, switch _S2 is used to set and reset the time setting mode in the basic clock mode and alarm mode. Furthermore, switch _S3 is used for mode switching.

The switch control unit 8 inputs the outputs of the switches S ₁ , S ₂ , and S ₃ and outputs mode designation signals a, b, and c that designate the basic clock mode, alarm mode, and stopwatch mode, respectively; Corresponding clock circuit 2, alarm circuit 3, stopwatch circuit 4
give to each. Further, in the basic clock mode and the alarm mode, when entering the correction mode, a correction mode designation signal f is output to the display switching circuit 5. In addition, in the basic clock time mode and alarm correction mode, a signal d giving a digit selection signal;
A signal e giving a +1 signal is outputted and applied to each circuit 2, 3.

The display switching circuit 5 receives the mode signals a,
b and c are input together, and only one piece of information from one of the circuits 2, 3, and 4 is selected and sent to the display section 6. The display section 6 is composed of a liquid crystal display device, and has a display body as shown in FIG.
Displays morning and afternoon time information, mode, etc. Further, the sound alarm device 7 has a sounding body such as a buzzer, and emits an alarm sound.

Next, the detailed circuit of the switch control section 8 will be explained with reference to FIG. The output of switch S ₂ is one shot 1
1 to form a one-shot signal, and the one-shot signal is input to one end of an AND gate 12 and also applied to an input terminal T of a T-type flip-flop 14 via an OR gate 13. The set output of flip-flop 14 is input as a gate control signal to the other end of AND gate 12, and is also output as signal A. The reset output is input as a gate control signal to one end of the AND gate 15, and a signal C, which will be described later, is input to the other end. and,
The output of AND gate 15 is applied to input terminal T of flip-flop 14 via OR gate 13. Further, the output of the AND gate 12 is a signal B.

The output of switch _S3 is input to one shot 16 to form a one shot signal, and this one shot signal is input to one end of each of AND gates 17 and 18. The set output of the flip-flop 14 is input as a gate control signal to the other end of the AND gate 17, and the output is applied as a clock to the ternary counter 19 for counting. Enter.

The output of switch S ₁ is input to one shot 22 to be converted into a single shot signal, and is input to AND gate 23 . A flip-flop 14 is connected to each other end of this AND gate 23 and the AND gate 18.
The reset output of AND gate 2 is input.
The respective outputs of 3 and 18 are both input to the OR gate 24. The output of the AND gate 18 is the signal d
and the output of the AND gate 23 forms the signal e. Furthermore, the signal B is also input to the OR gate 24.

The count output of the ternary counter 19 is “0”, “1”,
"2" form the mode designation signals a, b, c, respectively, and the count outputs "0",
"1" is input to AND gate 20 or 2, respectively. The output of the AND gate 20 is applied to the set input terminal S of the SR flip-flop 25. The output of the AND gate 21 and the output of the OR gate 24 are applied to the reset input terminal R of the flip-flop 25 via an OR gate 26. The set output of flip-flop 25 is applied to one end of AND gate 27 as a gate control signal. A signal with a frequency of 1 Hz is applied to the other end of this AND gate 27, and its output is 10
The signal is applied to the advance counter 28 and counted. This 10
The base counter 28 is reset by the output of the AND gate 20, and its carry output is applied via the OR gate 29 to the ternary counter 19 as a preset signal of count output "0".

The output of the OR gate 24 is also applied to the set input terminal S of an SR type flip-flop 30, and the signal A is applied to its reset input terminal R. The set output is applied as a gate control signal to one end of the AND gate 31, and the signal with a frequency of 1 Hz is input to the other end. The output of the AND gate 31 is then applied to a sexagesimal counter 32 and counted. This sexagesimal counter 32 is reset by the output of the OR gate 24, and its carry output is applied as a preset signal to the ternary counter 19 via the OR gate 29, and becomes the signal C.

Next, the operation will be explained with reference to the mode transition diagram in FIG. The oscillation circuit 1 always outputs a signal with a frequency of 1 Hz and applies it to the clock circuit 2 and stopwatch circuit 4, respectively. If the basic clock display mode is selected now, the count output of the ternary counter 19 in FIG. 2 is "0", and only the mode designation signal a is output as "1", and the clock circuit 2 and display switching It is applied to the circuit 5. For this reason, the display switching circuit 5 sends current time information to the display section 6 to display the current time.

In the basic clock mode described above, when switching to the time correction mode shown in FIG. 3B, the mechanical switch _S2 is turned on once. As a result, one shot signal is outputted from the one shot 11 and applied to the input terminal T of the flip-flop 14 via the AND gate 12 and the OR gate 13. Before this, the flip-flop 14 is in the set state, and its set output is "1". Therefore, when the single signal is output, one signal B is also output from the AND gate 12 and input to the OR gate 24. Therefore, flip-flop 2
Both the 5 and hexadecimal counters 32 are reset and the flip-flop 30 is set. Therefore, the set output of the flip-flop 30 becomes "1" and the AND gate 31 is opened.
The sexagesimal counter 32 starts counting signals with a frequency of 1 Hz. On the other hand, the flip-flop 14 is inverted and reset by the application of the one-shot signal, and its reset output becomes "1" thereafter, and this reset output is sent to the display switching circuit 5 as the correction mode designation signal f.
The SET mark is displayed on the display section 6. Furthermore, AND gates 15, 8, and 23 are all opened by the reset output of flip-flop 14.

Next, in order to set the current time correctly,
When selecting the pm, hour, minute, and second digits,
Turn on Switch _S3 , which is a touch switch. As a result, each time the switch S ₃ is turned on,
Under the control of a control unit (not shown), each digit is selected in the order of seconds, minutes, hours, morning/afternoon, seconds, etc., for example. That is, each time the switch _S3 is turned on, one shot signal is output from the one shot 16, and the one shot signal is output from the AND gate 18 under construction and is supplied to the clock circuit 2 as the digit selection signal d, and at the same time, the OR gate is output. 24, flip-flop 2
The 5,60-decimal counter 32 is reset each time, and the flip-flop 30 is kept set. Therefore, digit selection is performed as described above, and the sexagesimal counter 32 starts counting again after being reset.

On the other hand, after performing digit selection in this way,
Set the actual information (hours, minutes, seconds, AM/PM content) to the selected digits. To do this, when switch _S1 , which is a touch switch, is turned on, one shot signal is output from one shot 22, and this one signal is sent to AND gate 23 which is being developed.
It is also output from the clock circuit 2 and supplied to the clock circuit 2 as a signal e which gives a +1 signal. Therefore, the actual information can be set by fast forwarding or the like. Furthermore, since the one-shot signal is also input to the OR gate 24, the flip-flop 25 and the sexagesimal counter 32 are reset each time, as described above, the flip-flop 30 is held in the set state, and the sexagesimal counter 32 starts the timekeeping operation again. Start.

After completing the time setting for time adjustment in the basic clock mode as described above, if you do not operate switches S ₁ , S ₂ , and S ₃ and leave them in the OFF state, the sexagesimal counter 32 is finally reset in the above-mentioned time setting operation and then restarts the timekeeping operation again, and when 60 seconds have passed, its carry output becomes "1" and is applied to the OR gate 29, and the "1" signal C is output and applied to the AND gate 15. Therefore, the ternary counter 19 is preset to "0" and becomes "1".
A mode designation signal is output, and the flip-flop 14 is inverted and returns to the set state. That is, 1
After a minute, the basic clock will automatically return from the mode for setting the time to the basic clock mode for displaying the current time. Note that this automatic return can be performed by operating the switch _S2 multiple times in succession, but the details will be omitted.

Next, when changing the mode from the basic clock mode to the alarm mode, turn switch S ₃ to 1.
Turn on times. This results in one shot 16 to 1
The emitted signal is output and applied to the ternary counter 19 via the AND gate 17, and its counting output is "0".
to "1". As a result, a mode designation signal b of "1" designating the alarm mode is output, and is applied to the display switching circuit 5 and also to the AND gate 21. Therefore, the display switching circuit 5
From there, the alarm time set at that time is sent to the alarm circuit 3 and displayed on the display section 6.

Next, in order to newly set the alarm time in this state, switch _S2 is turned on once. .
As a result, a signal B of "1" is output in the same manner as when correcting the current time described above, and the flip-flop 25 outputs a signal B of "1".
is reset, and the flip-flop 14 is also inverted to the reset state. This causes the alarm set mode shown in FIG. 3 to be entered.

Next, when selecting the AM/PM, hour, minute, and second digits of the alarm time, all you have to do is turn on the switch _S3 . In that case, a single signal is output from the AND gate 18 in the same way as when setting the current time. For,
“1” digit selection signal d is output and alarm circuit 3
The digit is selected and the flip-flop 25 is reset each time.

Further, after selecting a digit, in order to set actual information to the selected digit, it is sufficient to turn on the switch _S1 , and at that time, a signal e of "1" giving a +1 signal is outputted and supplied to the alarm circuit 3. Therefore, actual information is set by fast forwarding or the like. After the alarm time has been set, the mode returns from the alarm set mode to the alarm mode by operating switch _S2 multiple times in succession.

On the other hand, if you accidentally turn on the touch switch _S3 in the basic clock mode and do not turn on both switches _S1 and _S2 thereafter, the AND gate 17 is currently opening, so the switch _S3 is turned on. A one-shot signal that is output when an erroneous operation occurs is output from the AND gate 17 and applied to the ternary counter 19 and the AND gates 20 and 21, respectively. Then 3
Since the count output of the advance counter 19 is now "0" and the mode designation signal a is being outputted as "1", the one-shot signal is further outputted from the AND gate 20 to set the flip-flop 25, Also, the decimal counter 28 is reset. Next, the ternary counter 19 is incremented by 1, its count output becomes "1", and the mode designation signal b of the alarm mode changes to "1". As a result, the AND gate 27 is opened from the time of the erroneous operation of the switch _S3 , and the decimal counter 28 starts counting signals with a frequency of 1 Hz.Therefore, after 10 seconds, a carry signal is output and the ternary counter 19 is The counting output is preset to "0", that is, the alarm mode set due to an erroneous operation automatically returns to the basic clock mode within a short time after 10 seconds, and the display unit 6 starts displaying the current time again.

To change the mode from the alarm mode to the stopwatch mode, switch _S3 is turned on once. At this time, the ternary counter 19 is incremented by 1 and its count output changes to "2", and the mode designation signal C that designates the stopwatch mode becomes "1".
The signal is output as a signal and applied to the stop watch circuit 4. The start/stop operation is executed by operating the switch _S1 , and at this time a signal e of "1" is output and applied to the stop watch circuit 4, thereby performing the stop watch operation. To return from the stopwatch mode to the basic clock mode, it is sufficient to turn on the switch _S3 once, and at this time the ternary counter 19 is reset and the basic clock mode is set.

In addition, in the above embodiment, there are three basic modes, but there may be four or more types.

[Effect of idea]

As explained above, when both a tactile switch and a mechanical switch are used as mode switches, the electronic watch is configured such that the length of the automatic return time for the tactile switch to the basic watch mode is set to be shorter than the length of the automatic return time for the mechanical switch. This has the advantage that even if the user unconsciously touches the touch switch and changes the mode, the automatic return to the basic watch mode can be smoothly performed.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram of an embodiment of this invention, FIG. 2 is a specific circuit diagram of the switch control section 8, and FIG. 3 is a mode transition diagram. 1...Oscillation circuit, 2...Clock circuit, 3...Alarm circuit, 4...Stopwatch circuit, 5...
Display switching circuit, 6... display unit, 7... sound alarm device,
8... Switch control unit, 11, 16, 22... One shot, 14, 25, 30... Flip-flop, 19... Ternary counter, 28... Decimal counter, 32... Sexagesimal counter.

Claims (1)

[Claims for Utility Model Registration] A clock means 2 for counting time information; a display device 6 for displaying the time information obtained by the clock means 2; and a display device 6 for displaying the time information obtained by the clock means 2;
push button switch means S2, 11, 13, 14, 5 for switching from a time display mode in which the time information is displayed to a first other function display mode in which first function information different from the time information is displayed; By operating S3, the time display mode in which the time information is displayed on the display device 6 changes to the second other function display mode in which the time information and second function information different from the first other function information are displayed. Switching touch switch means S3,1
6, 17, 19, 5, and the push button switch means S2, 11, 13, 1
First timer means 24, 30, 31, 32, 15 that starts counting when switched to the first other function display mode in steps 4 and 5, and returns to the time display mode after counting the first specific time. , 13, and the touch switch means S3, 16, 17, 1
a second timer means 20 that starts counting when switched to the second other function display mode at step 9, 5 and returns to the time display mode after counting a second specific time shorter than the first specific time; ,25,26,
An electronic clock comprising 27 and 28.