JPS636717Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic timepiece having analog and digital displays.

Conventionally, there have been some watches equipped with analog and digital display sections, but these can be broadly classified into the following display functions. First, the analog and digital display sections have a mechanical configuration, and the analog display shows the current time and the digital display shows the alarm time.The analog display section uses a mechanical pointer, and the digital display section uses a liquid crystal display. The current time and the latter can display different time functions such as timers and stopwatches. Furthermore, the analog and digital display sections are composed of liquid crystal display devices, with the former displaying the current time and the latter displaying a calendar.

In any of the above cases, the current time is displayed on the analog display, and the time that cannot be displayed on the display is displayed on the digital display.
No organic relationship was observed between the two. Therefore, the analog and digital display sections are simply arranged individually, and the characteristics of both displays are not fully utilized.

Therefore, the present invention provides an electronic timepiece that makes effective use of the display function by selectively displaying time-related content such as time and elapsed time on both analog and digital display sections.

An embodiment of the present invention will be described below based on the drawings. In Fig. 1, reference numeral 1 is an electronic watch equipped with an analog and digital display section, and the analog display section 2 has 60 pointer-shaped segment electrodes arranged radially. A liquid crystal is interposed between the divided common electrodes (not shown). When a voltage is selectively applied between the segment electrodes and the common electrode, the long and short hands are optically displayed. 3 is a digital display section, which is constituted by a liquid crystal display device on which a numeric display pattern is formed. 4 is a switch.

FIG. 2 shows a drive circuit for the display section shown in FIG.
5 is a crystal oscillator, and 6 is a frequency divider, which supplies a reference time pulse to a time clock circuit 7 that measures hours, minutes, and dates. Here, terminals 7a and 7b of the clock circuit 7
produce time and date output respectively. Reference numeral 8 denotes a timer, which is comprised of a set circuit 8a for storing scheduled time and a clock circuit 8b for measuring elapsed time. Reference numeral 9 denotes a detection circuit which detects coincidence of the outputs of the set circuit 8a and the clock circuit 8b and activates a notification device 10 such as a buzzer. Reference numeral 11 denotes a timing pulse generation circuit, which generates pulses in accordance with, for example, manual rotation operation. Note that any commonly used appropriate pulse generator can be used as the circuit. 12 is a decoder driver that generates a drive output for the analog display section 2 shown in the first diagram, and 13 is a decoder driver for the digital display section 3 as well. 14 is a switch for switching to the timer mode; 15 is a switch for controlling the timer; and 16 is a switch for selectively adjusting the timing of the clock circuit 7 and the set circuit 8a. 17-26 are AND gate circuits, 27-28
is an OR gate circuit, and 29 to 30 are inverters. The above switch 14, gate circuits 22, 27,
Decoder driver 12 and inverter 30 constitute a control circuit. In addition, the switch 14, gate circuits 21 to 28, decoder drivers 12 and 1
3. The inverter 30 constitutes a selection circuit.

Next, the display of the timer in the non-operating state will be explained. In this state, switch 16 is closed and switches 14 and 15 are open. Gate circuits 17, 21, 22 and 24 are therefore opened and gate circuits 23, 25, 26 and 18 are opened.
is closed. Therefore, terminal 7 of timing circuit 7
The time output of a is supplied to the decoder driver 12 via gate circuits 22 and 27, and the current time is displayed on the analog display section 2 shown in the first diagram. Further, the date output from the terminal 7b is supplied to the decoder driver 13 via the gate circuits 21, 24 and 28.
The date is displayed on the digital display section 3.

To operate the timer, first close switch 14 and open gate circuits 23, 25 and 26.
This causes the analog display section 2 to display the set circuit 8a.
The output of the clock circuit 8b is displayed, and the time output of the clock circuit 7, that is, the current time, is displayed on the digital display section 3. Therefore, the timing pulse generator 1
1 to set the scheduled time, e.g., to the set circuit 8a.
Set 50 minutes while looking at analog display section 2.
An example of this set state is shown by the pointer 31 shown in the third figure. When the switch 15 is closed, the output of the frequency divider 6 is passed through the gate circuit 20 to the clock circuit 8.
b, and the elapsed time is displayed on the analog display section 2 shown in the first diagram. An example of displaying the accumulated time is shown in FIG.

When the elapsed time matches the set time, an output is generated from the detection circuit 9 and the notification device 10 is activated. Then, when the switch 15 is opened and the switch 14 is opened, the current time is displayed on the analog display section 2 and the date on the digital display section 3 again.

The time-related content of the present invention is not limited to the above-described embodiments; for example, it is also possible to selectively display the reference point time, local time, alarm time, etc. on the analog display section and the digital display section.

As detailed above, the present invention is configured to selectively display a plurality of time-related contents on an analog display section that optically displays a pointer and a digital display section that has a number pattern. Therefore, depending on the elapsed time of the same system, there are cases where analog display is suitable and cases where digital display is suitable, but in these cases, the display can be changed manually or automatically as necessary. You can switch between them and take full advantage of the features of analog and digital. Further, the same effect can be achieved even in contents related to different times.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of an electronic timepiece mainly showing the display section thereof. FIG. 2 is a drive circuit diagram of FIG. 1, and FIG. 3 is an explanatory diagram showing a display example. 2...Analog display section, 3...Digital display section, 7...Clock circuit, 8...Timer, 12...Decoder driver, 13...Decoder driver.

Claims (1)

[Scope of utility model registration request] An analog display section that electro-optically displays the pointer, a digital display section that forms a numeric display pattern, a clock circuit that measures the time, a set circuit that stores the timer's scheduled time, and a timer that measures the elapsed time. a control circuit that displays the time output of the clock circuit on the analog display section; and a control circuit that displays the time output of the clock circuit on the digital display section when the timer mode is set by operating the switch. and a selection circuit for displaying the outputs of the timekeeping circuit and the set circuit on the analog display section.