JPS6032620Y2 - Electronic clock time adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a time adjustment device for an electronic watch that includes a pointer display, a digital display, and a sound generator.

Recently, electronic watches equipped with both a pointer display section with a hand movement device driven by a step motor and a digital display section using a liquid crystal display cell are equipped with a pointer display section that is rich in decoration and has a traditional beauty, It has been attracting attention as an easy-to-use and easy-to-read product that combines a digital display section, which is suitable as a display section for a multi-functional watch, with a sense of unity in appearance, and takes advantage of the strengths of both and compensates for their weaknesses.

However, since the digital display section is constituted by a liquid crystal display cell (LCD), it has drawbacks such as a narrow viewing angle and a dark display state due to the use of polarizing plates.

To improve this, if an electrochromic display device (hereinafter referred to as ECD) is used in the digital display section, the appearance of the pointer display section (analog section) can be maintained in harmony with the dial, and the decorativeness of the pointer display section can be improved. However, the lifespan of an ECD is approximately 7 IO times in terms of the number of repeated writing and erasing operations, and if seconds were to be displayed, the lifespan of the ECD would only be approximately 116 days.
Since it is used in the minute display range and therefore cannot display seconds, the easiest way to set the time is to first set the time accurately to the standard time, and then set the time on the hand display accurately to the time on the digital display. I couldn't catch it.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the conventional electronic clock, and to adjust the time of the electronic clock so that the time on the hand display can be accurately adjusted to the time on the digital display even if an ECD is used in the digital display. It provides equipment.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is an external plan view of the electronic timepiece, and FIG. 2 is a block diagram schematically showing the circuit configuration of FIG. 1.

This electronic timepiece includes a pointer display section 1, a digital display section 2, an external operation member 3 for adjusting the pointers, and a piezoelectric buzzer,
A correction state detection switch 12 having a sound generating device including a sounding body 15 such as an electromagnetic buzzer and configured to be interlocked with the external operation member 3 is configured to reset at least a part of the second frequency dividing circuit 16. It also serves as a reset switch.

The digital display section 2 is composed of an ECD and is adapted to display hours and minutes.

Therefore, when the correctable state is detected by the corrective state detection switch 12, the digital display section 2 changes the display in minutes, that is, 3 to n seconds before the minute display count up, the sound generator emits a sound. make the action take place,
Since the display change of the unit of the previous record is forewarned, the time on the hand display section 1 can be easily and accurately set to the time on the digital display section 2.

The above-mentioned operation will be explained using a block diagram shown in FIG.

4 is an oscillation circuit, and 5 is a first frequency dividing circuit that generates an IHz signal (second signal).

The second signal from the first frequency divider circuit 5 is counted by a second counter 6, and the carry signal, that is, the count-up signal in minute display, is sent to a sexagesimal minute counter 7 and further to a decimal hour counter. 8 is input sequentially.

The signals from the counters 7 and 8 are input to the decoder/driver circuit 9, and the digital display section 2 displays the minutes and hours, respectively.

Furthermore, the signal from the second counter 6 is input to the minute count-up warning signal forming circuit 11, and for example, when the warning sound is to be generated from 3 seconds in advance as described above, 57 seconds, 5 seconds, 5 seconds, etc.
A buzzer drive signal with a short pulse width is outputted from the notice signal forming circuit 11 so that the sounding body 15 is driven at 9 seconds and 0 seconds (on the hour), respectively.

The correction state detection switch 12 is configured to interlock with the external operating member 3 shown in FIG.
When the time is set to a state in which the time can be corrected using the hands, the detection switch 12 is closed in conjunction with the above-mentioned detection switch 12.

As a result, at least a part of the second frequency dividing circuit 16 is reset, and the buzzer drive signal from the notice signal forming circuit 11 is input to the buzzer drive circuit 14, and the sounding body 15 outputs the buzzer drive signal at 57 seconds, 5 seconds, 5 seconds. At 0 seconds, sounds are made with a predetermined time width, respectively.

In addition, even in the case of the above example, 57.5&E#
By changing the buzzer driving frequency or sound pressure between the time of 0 seconds and the time of 0 seconds, it is possible to more effectively give advance notice of the minute count-up.

Further, the second zero switch 20 is provided as an externally operated switch for resetting the first frequency dividing circuit 5 and second counter 6 to zero.

On the other hand, the output from the oscillation circuit 4 is frequency-divided to IHz by the second frequency dividing circuit 16 and then input to the waveform shaping circuit 16.

The waveform shaping circuit 16 has the function of appropriately shortening the pulse width of the IHz signal and then supplying the IHz signal to the motor drive circuit 18.

Further, the pulse motor 19 is driven by l steps per second in response to a signal from the motor drive circuit 18,
It is configured to move the hands of the above-mentioned hand display section 1.

Note that illustrations and explanations of external operation switches for correcting the minute counter 7, hour counter 8, etc. mentioned above will be omitted.

As detailed above, in an electronic watch that has both a pointer display section and a digital display section and is equipped with a sound generator, the minute-by-minute display on the digital display section is performed using a correction state detection switch that is linked to an external operating member. The time on the hand display can be easily set to the time on the digital display by making a sound that foretells the change in the number of minutes, that is, the count-up of the minute display.

That is, in the above embodiment as well, the display time on the digital display section 2 is first adjusted to the standard time.

At this time, if the second zero switch 16 is closed at the timing of the minute count-up of the standard time, for example, in time with the time signal on the radio or television, the contents of the first frequency dividing circuit 5 and the second counter 6 will be completely changed. Can be synchronized to standard time.

The above operations are generally performed when a time signal is broadcast on radio, television, etc., as described above.

Next, the time displayed on the pointer display section 1 is adjusted to the time indicated on the digital display section 2. At this time, the second hand of the pointer display section 1 is at the position where it indicates zero seconds, that is, the position of one verse on the dial. When the mark position is reached, pull out the external operating member 3 for pointer correction and set the pointer correction state.
In conjunction with this, the correction state detection switch 12 is closed, and as a result, the second frequency dividing circuit 16 is held in the reset state, the movement of the second hand is also stopped, and as described above, the sounding body A state is reached in which a sounding operation for predicting the count up of the counter 6 is performed.

Therefore, after adjusting the minute hand and hour hand of the hand display section 1 to the time displayed on the digital display section 2 by operating the external operating member 3, the minute hand and hour hand of the hand display section 1 are set to the time displayed on the digital display section 2, and then, based on the sounding operation of the above-mentioned notice, the minute hand and the hour hand of the hand display section 1 are set to match the timing of the minute count-up based on the sounding operation of the above-mentioned notice. If the external operation member 3 is returned to the normal state, the first
Including synchronization with the frequency dividing circuit 5, the pointer display section 1
This means that the displayed time can be set completely accurately on the digital display section 2.

Therefore, according to the above configuration, even if the digital display section does not include a seconds display, the time displayed on the hand display section can be changed based on the sounding operation that foretells the count-up of minutes. It is now possible to precisely adjust the display to the nearest second.

As a result, in the past, the lifespan was only 107 times,
This made it possible to use ECD, which could not be used as a digital display part of a watch like the one mentioned above because it could not display seconds.

Also, by using ECD, there is no visual angle dependence,
It harmonizes perfectly with the dial of the pointer display, making it possible to create attractive products with rich decorative features.

Even if a conventional liquid crystal display (LCD) is used for the digital display, by using the present invention, it is possible to omit the display of seconds on the digital display, resulting in benefits such as the ability to downsize the movement. has.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the external appearance of an electronic timepiece according to an embodiment of the present invention, and FIG. 2 is a block diagram schematically showing its circuit configuration. DESCRIPTION OF SYMBOLS 1... Pointer display section, 2... Digital display section, 3... External operation member, 4... Oscillation circuit, 5...... First frequency dividing circuit, 6...
Second counter 7... Minute counter, 8...
... Hour counter, 9 ... Decoder driver circuit, 11 ... Minute count-up notice signal formation circuit, 12 ... Correction state detection switch, 14
...Buzzer drive circuit, 15...Sounding body, 16...Second frequency dividing circuit, 18...Motor drive circuit, 19...・Pulse motor, 20・
...Second return zero switch.

Claims (1)

[Scope of utility model registration request] In an electronic watch equipped with a pointer display section having a hand movement device driven by a step motor and a digital display section not including a seconds display section, an external operation member for correcting the pointer display section and the external operation member are provided. and a correction state detection switch configured to detect that the time has been operated and the time can be corrected by the hand, and when the correction state detection switch detects a state in which the time can be corrected, the digital 1. A time adjustment device for an electronic timepiece, characterized in that it is provided with a sound generating means configured to perform a sounding operation for foretelling a change in the minute display on a display section.