JPS5824233Y2 - electronic clock - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electronic timepiece with a digital display, and in particular, it is an object of the present invention to propose an electronic timepiece with a simple structure that allows the displayed time to be easily and reliably adjusted without erroneous operation.

BACKGROUND ART Conventionally, electronic watches with digital displays are provided with, for example, a correction button so that the time can be manually corrected if the displayed time becomes incorrect.

First, a method for correcting the displayed time by operating this button will be explained with reference to FIGS. 1 and 2.

FIGS. 1 and 2 show buttons for adjusting the time on an electronic watch.

Figure 1 shows a clock case with an electro-optical display (not shown) for displaying the time on its surface, such as in the case of a clock radio, and a drive circuit etc. housed inside. 1.2.
There are three buttons 3, and when button 1 is pressed, the 1-minute unit display will change relatively slowly, approximately once every second.
Button 2 changes and increments each minute display.
When you press , these displays are relatively fast, displaying 10 seconds per second.
The ratio of times can be changed in the same way.

Further, when button 3 is pressed, the seconds unit display section is reset to 00 seconds.

FIG. 2 shows, for example, a case of a cassette tape recorder with a clock, and shows a clock housing in which an electro-optical display (not shown) for displaying the time is arranged on the surface and a drive circuit etc. are housed inside.
There are four buttons 4.5 and 6.7 on this case, and when buttons 4 and 5.6 are pressed, the hour, 10 minute, and minute unit display will be changed sequentially by the number of times the button is pressed. When button 7 is pressed, the second unit display section is reset to 00 seconds.

By the way, in the conventional case described above, the button for adjusting the time is exposed, so it is possible to press the button by mistake even when there is no need to adjust the displayed time, and there are also a large number of buttons. Therefore, there was a risk of erroneous operation.

In view of these points, the present invention aims to propose an electronic timepiece with a simple configuration that allows the displayed time to be easily adjusted without any erroneous operation.

Hereinafter, an example of the electronic timepiece of the present invention will be described in detail with reference to FIGS. 3 and 4.

FIG. 3 is a perspective view of a housing in which a correction operator, a unit display selection operator, and an operation switch are attached in the electronic timepiece of the present invention, and the electro-optical display for displaying the time is not shown. FIG. 4 is a system diagram of the electrical system of the electronic watch.

In FIG. 3, 8 is a housing in which the operation buttons are housed;
It consists of a main body 9 and a lid '10, and is incorporated into a part of an electronic watch.

The main body 9 is provided with an operation switch (for example, a microswitch) 43 that is operated in conjunction with the lid 10 that covers the correction operator 15. When the lid 10 is opened, the switch 43 is in the negative state □, i.e. It is turned on, and when closed it is forced into another state, namely off.

Further, the main body 9 is provided with operation buttons 14 and 15 as unit display section selection and correction operators.

In the system diagram shown in Fig. 4, 16 indicates the electronic watch body;
Reference numeral 17 is a reference oscillator, 50 is a drive circuit, and 20 is an electro-optical display having a time stopper, unit display units for 1 minute, 10 minute, and hour.

The drive circuit 50 is composed of frequency dividers 18, 20, 26, 29 and coder circuits 19, 23, 27, 30, and the two display 20 has a multi-digit unit display section 31.
32, 33, 34, and 35 are provided.

A reference oscillation signal of several MHz, for example, generated by the reference oscillator 17 is supplied to the frequency divider 18 and is used as a signal to be displayed in units of seconds.

This signal is then supplied to a decoder circuit 19, and the drive signal from the decoder circuit 19 is supplied to an electro-optical display 20 to first display the time in seconds.

The output of the first frequency divider 18 is passed through the OR gate 21 to the second frequency divider 18.
The signal is also supplied to the frequency divider 22, and is supplied to the decoder circuit 23 as a signal to be displayed in minutes.

The drive signal from the decoder circuit 23 is then supplied to the electro-optical display 20, where the time in minutes is displayed.

The output of the second frequency divider 22 is also supplied to a third frequency divider 26 via an OR gate 25, and is supplied to a decoder circuit 27 as a signal to be displayed in units of 10 minutes.

The drive signal from the encoder circuit 27 is then supplied to the electro-optical display 20, where the time in hours is displayed.

Similarly, the output of the third frequency divider 26 is supplied one after another to the next-stage frequency divider, and finally to the frequency divider 29 of the rear hair 5, which is supplied to the OR gate 28, to display the monthly display. This signal is supplied to the coder circuit 30 as a signal.

The drive signal from the decoder circuit 30 is then supplied to the electro-optical display 20, where the month is displayed.

Next, the parts that contribute to time adjustment of the electronic watch will be explained.

Reference numeral 40 denotes a correction display control circuit including a ring counter.

Further, 44 is a switch related to the operation button 14 as a unit display section selection operator, and is connected between the correction display control circuit 40 and ground.

43 is an operation switch similar to that shown in FIG.

Modification circuit 60 consists of a series of AND gates 61, 62, 63 .
64, one input terminal of which is connected to a resistor 65.
It is connected to the power source 1B through the switch 45 and grounded through the switch 45.

As described above, this switch 45 is associated with the operation button 15 provided on the housing 8 as a correction operation switch.

Next, the operation of correcting the time display in the electronic timepiece of the present invention will be explained.

First, if the displayed time is normal, the casing 8 in FIG.
is closed, and the operation switch 43 is off.

As a result, the ring counter of the correction display control circuit 40 is prevented from operating, and the button 14 as a unit display section selection operator and the button 15 as a correction operator for correcting the display of the unit display section are pressed. It cannot be touched, and therefore, when the time is displayed normally, the time is prevented from being corrected by erroneous operation.

Next, if the displayed time is incorrect, the lid 10 of the housing 8 in FIG.
By opening the opening, the operation switch 43 is turned on, and first, the ring counter of the correction display control circuit 40 is energized to be in an operating state, and each unit display section is in a state where it can be corrected.

Then, when only the button 15 as a correction operator is operated and pressed, the AND gate 61.
A voltage is supplied to one input terminal of the AND gates 61.62, 63.64, and the AND gates 61.62, 63.64 are opened and ready for operation, and the output of the ring counter of the correction display control circuit 40, that is, the correction control signal is The control signal output is supplied to the AND gate 61 of the correction circuit 60, and the control signal output is supplied to the first frequency divider 18.
supplied to

As a result, a control signal is supplied to the electro-optical display 20 via the drive circuit 19, and the time in seconds is corrected to 00 seconds.

With the lid 10 of the lid body 8 open, when the button 14 of the unit display selection operator 40 is pressed once, for example, the output of the ring counter as the correction display control circuit, that is, the correction control signal, is sent to the correction circuit 60. is supplied to the AND gate 62, and its output is supplied to the OR gate 21.

Then, when you press button 15 as a correction operator,
A control signal (for example, a clock signal) is supplied to the second frequency divider 22 via the OR gate 21 only while the button is pressed.

As a result, a control signal is supplied to the electro-optical display 20 via the drive circuit 23, and the time display in minutes is sequentially sent, and when a predetermined regular display is reached, by releasing the switch 15, the time is displayed in the predetermined minute increments. The time will be corrected and displayed.

Thereafter, in the same manner, the button 14 is pressed while the lid 10 of the housing 8 is opened.
For example, if you press button 2, 3, ... 5 times in sequence, and then press button 15, the time display in 10 minute, hour, day, and month units will be sequentially advanced until the specified regular display is reached. switch 1
By releasing the hand from 5, the time in predetermined 10 minute, hour, and time units will be corrected and displayed.

On the other hand, the output of the correction display control circuit 40 is connected to terminals 71, 72.
73, 74, 75, 76 to a blanking circuit operating, for example, in a time period, and transmitting the control signal from the blanking circuit to a multi-digit unit display 31, 32 of the electro-optical display 20. , 33, 34, and 35, it is possible to clearly indicate that the unit being corrected is being corrected by blinking the unit display section that is being corrected.

Also, if you put a colon next to the unit display section in the same way,
By supplying a control signal to this colon, the colon lights up or flashes to clearly indicate that correction is in progress.

Immediately after the time adjustment is completed, the operation switch 43 is turned off by closing the lid 10 of the housing 8, the ring counter of the correction display control circuit 40 is reset, that is, it becomes inactive, and the watch body 16 returns to its original state. In this state, the reference oscillator 17 operates, thereby performing normal clock operation.

Thus, according to the electronic timepiece of the present invention, the operation switch is configured to be linked to the opening and closing of the casing in which the unit display section selection operator and correction operator are housed, so that during normal use, each operator is Since the device is housed within the housing, erroneous operation of each operator is significantly reduced, and since the number of operators is kept to the minimum necessary, operation is extremely easy.

Furthermore, according to the present invention, when correcting the display, the user opens the lid, operates the operation switch, and then operates the correction control and the unit display selection control. Within the period (59 seconds) from when the unit is corrected to OO display until the minute display changes, other unit display units, ie, 1 minutes, 10 minutes, and hours, can be adjusted with sufficient margin.

Therefore, the time can be adjusted very easily.

In addition, if a blanking circuit or the like is controlled by the output of the correction display control circuit to make a multi-digit unit display blink, or if a colon provided next to the unit display is lit, a predetermined unit display will be displayed. It is possible to clearly indicate that the time is being corrected.

[Brief explanation of the drawing]

FIGS. 1 and 2 are perspective views showing a button for time adjustment in a conventional electronic watch, and FIG. 3 is a perspective view showing a button for adjusting the time in the electronic watch of the present invention, in which a correction operator, a unit display selection operator, and an operation switch are installed. FIG. 4 is a perspective view of the casing, and is a system diagram of the electrical system of the electronic timepiece of the present invention. 14 and 15 are unit display selection and correction operators, 17 is a reference oscillator, 19, 23, 27.30 is a decoder, 20
31, 32, 33, 34, 35 are multi-digit unit display units, 40 is a correction display control circuit, 43 is an operation switch, 44 is a switch related to the unit display unit selection operator 14, 45 is a switch related to the correction operator 15, 50 is a drive circuit, 60 is a correction circuit, and 61 to 64 are AND circuits.

Claims (1)

[Scope of utility model registration request] an electro-optical display comprising a unit display for displaying at least seconds, minutes, tens of minutes, and hours of the time; a drive circuit for driving the display; and a reference oscillator for controlling the drive circuit; a correction display control circuit that supplies a correction control signal to the drive circuit when correcting any of the plurality of unit display sections;
In an electronic watch having a correction circuit that individually corrects the display of the plurality of digit unit display sections by controlling the passage of the correction control signal, the correction display control circuit includes a ring counter and The circuit includes a plurality of AND circuits corresponding to the plurality of digit unit display parts, and the correction and normal display state of the display are controlled depending on the presence or absence of a correction control signal from the correction display control circuit, A unit display selection switch and its operator for selecting a unit display to be modified in connection with the correction display control circuit, and opening the plurality of AND circuits to correct the display of any one of the plurality of unit display parts. a correction switch and its operator, and an operation switch that is operated in conjunction with a lid covering the unit display section selection operator and the correction operator to control operation or non-operation of the ring counter; When the lid is in the open state, the operation switch is in the negative state and the ring counter is activated, and a correction control signal from the ring counter is first supplied to the AND circuit corresponding to the second unit display section of the correction circuit. Then, the second unit display becomes editable and correctable, and then by operating only the correction operator without first operating the unit display selection operator, the second unit display changes to 00 display. After operating the unit display selection operator, a correction control signal from the ring counter is supplied to an AND circuit corresponding to the unit display selected by the operation of the unit display selection operator in the correction circuit. Then, the unit display section becomes a state where correction is possible and a correction display is made, and then the display of the selected unit display section is corrected by operating the correction operator, and when the lid is in the closed state, the operation switch is set to the other The electronic timepiece is configured such that the ring counter becomes inoperable, the unit display section selection operator and the correction operator become inoperable, and the display returns to a normal display state.